Chapter 6. Troubleshooting logging 6.1. Viewing Logging status You can view the status of the Red Hat OpenShift Logging Operator and other logging components. 6.1.1. Viewing the status of the Red Hat OpenShift Logging Operator You can view the status of the Red Hat OpenShift Logging Operator. Prerequisites The Red Hat OpenShift Logging Operator and OpenShift Elasticsearch Operator are installed. Procedure Change to the openshift-logging project by running the following command: USD oc project openshift-logging Get the ClusterLogging instance status by running the following command: USD oc get clusterlogging instance -o yaml Example output apiVersion: logging.openshift.io/v1 kind: ClusterLogging # ... status: 1 collection: logs: fluentdStatus: daemonSet: fluentd 2 nodes: collector-2rhqp: ip-10-0-169-13.ec2.internal collector-6fgjh: ip-10-0-165-244.ec2.internal collector-6l2ff: ip-10-0-128-218.ec2.internal collector-54nx5: ip-10-0-139-30.ec2.internal collector-flpnn: ip-10-0-147-228.ec2.internal collector-n2frh: ip-10-0-157-45.ec2.internal pods: failed: [] notReady: [] ready: - collector-2rhqp - collector-54nx5 - collector-6fgjh - collector-6l2ff - collector-flpnn - collector-n2frh logstore: 3 elasticsearchStatus: - ShardAllocationEnabled: all cluster: activePrimaryShards: 5 activeShards: 5 initializingShards: 0 numDataNodes: 1 numNodes: 1 pendingTasks: 0 relocatingShards: 0 status: green unassignedShards: 0 clusterName: elasticsearch nodeConditions: elasticsearch-cdm-mkkdys93-1: nodeCount: 1 pods: client: failed: notReady: ready: - elasticsearch-cdm-mkkdys93-1-7f7c6-mjm7c data: failed: notReady: ready: - elasticsearch-cdm-mkkdys93-1-7f7c6-mjm7c master: failed: notReady: ready: - elasticsearch-cdm-mkkdys93-1-7f7c6-mjm7c visualization: 4 kibanaStatus: - deployment: kibana pods: failed: [] notReady: [] ready: - kibana-7fb4fd4cc9-f2nls replicaSets: - kibana-7fb4fd4cc9 replicas: 1 1 In the output, the cluster status fields appear in the status stanza. 2 Information on the Fluentd pods. 3 Information on the Elasticsearch pods, including Elasticsearch cluster health, green , yellow , or red . 4 Information on the Kibana pods. 6.1.1.1. Example condition messages The following are examples of some condition messages from the Status.Nodes section of the ClusterLogging instance. A status message similar to the following indicates a node has exceeded the configured low watermark and no shard will be allocated to this node: Example output nodes: - conditions: - lastTransitionTime: 2019-03-15T15:57:22Z message: Disk storage usage for node is 27.5gb (36.74%). Shards will be not be allocated on this node. reason: Disk Watermark Low status: "True" type: NodeStorage deploymentName: example-elasticsearch-clientdatamaster-0-1 upgradeStatus: {} A status message similar to the following indicates a node has exceeded the configured high watermark and shards will be relocated to other nodes: Example output nodes: - conditions: - lastTransitionTime: 2019-03-15T16:04:45Z message: Disk storage usage for node is 27.5gb (36.74%). Shards will be relocated from this node. reason: Disk Watermark High status: "True" type: NodeStorage deploymentName: cluster-logging-operator upgradeStatus: {} A status message similar to the following indicates the Elasticsearch node selector in the CR does not match any nodes in the cluster: Example output Elasticsearch Status: Shard Allocation Enabled: shard allocation unknown Cluster: Active Primary Shards: 0 Active Shards: 0 Initializing Shards: 0 Num Data Nodes: 0 Num Nodes: 0 Pending Tasks: 0 Relocating Shards: 0 Status: cluster health unknown Unassigned Shards: 0 Cluster Name: elasticsearch Node Conditions: elasticsearch-cdm-mkkdys93-1: Last Transition Time: 2019-06-26T03:37:32Z Message: 0/5 nodes are available: 5 node(s) didn't match node selector. Reason: Unschedulable Status: True Type: Unschedulable elasticsearch-cdm-mkkdys93-2: Node Count: 2 Pods: Client: Failed: Not Ready: elasticsearch-cdm-mkkdys93-1-75dd69dccd-f7f49 elasticsearch-cdm-mkkdys93-2-67c64f5f4c-n58vl Ready: Data: Failed: Not Ready: elasticsearch-cdm-mkkdys93-1-75dd69dccd-f7f49 elasticsearch-cdm-mkkdys93-2-67c64f5f4c-n58vl Ready: Master: Failed: Not Ready: elasticsearch-cdm-mkkdys93-1-75dd69dccd-f7f49 elasticsearch-cdm-mkkdys93-2-67c64f5f4c-n58vl Ready: A status message similar to the following indicates that the requested PVC could not bind to PV: Example output Node Conditions: elasticsearch-cdm-mkkdys93-1: Last Transition Time: 2019-06-26T03:37:32Z Message: pod has unbound immediate PersistentVolumeClaims (repeated 5 times) Reason: Unschedulable Status: True Type: Unschedulable A status message similar to the following indicates that the Fluentd pods cannot be scheduled because the node selector did not match any nodes: Example output Status: Collection: Logs: Fluentd Status: Daemon Set: fluentd Nodes: Pods: Failed: Not Ready: Ready: 6.1.2. Viewing the status of logging components You can view the status for a number of logging components. Prerequisites The Red Hat OpenShift Logging Operator and OpenShift Elasticsearch Operator are installed. Procedure Change to the openshift-logging project. USD oc project openshift-logging View the status of logging environment: USD oc describe deployment cluster-logging-operator Example output Name: cluster-logging-operator .... Conditions: Type Status Reason ---- ------ ------ Available True MinimumReplicasAvailable Progressing True NewReplicaSetAvailable .... Events: Type Reason Age From Message ---- ------ ---- ---- ------- Normal ScalingReplicaSet 62m deployment-controller Scaled up replica set cluster-logging-operator-574b8987df to 1---- View the status of the logging replica set: Get the name of a replica set: Example output USD oc get replicaset Example output NAME DESIRED CURRENT READY AGE cluster-logging-operator-574b8987df 1 1 1 159m elasticsearch-cdm-uhr537yu-1-6869694fb 1 1 1 157m elasticsearch-cdm-uhr537yu-2-857b6d676f 1 1 1 156m elasticsearch-cdm-uhr537yu-3-5b6fdd8cfd 1 1 1 155m kibana-5bd5544f87 1 1 1 157m Get the status of the replica set: USD oc describe replicaset cluster-logging-operator-574b8987df Example output Name: cluster-logging-operator-574b8987df .... Replicas: 1 current / 1 desired Pods Status: 1 Running / 0 Waiting / 0 Succeeded / 0 Failed .... Events: Type Reason Age From Message ---- ------ ---- ---- ------- Normal SuccessfulCreate 66m replicaset-controller Created pod: cluster-logging-operator-574b8987df-qjhqv---- 6.2. Troubleshooting log forwarding 6.2.1. Redeploying Fluentd pods When you create a ClusterLogForwarder custom resource (CR), if the Red Hat OpenShift Logging Operator does not redeploy the Fluentd pods automatically, you can delete the Fluentd pods to force them to redeploy. Prerequisites You have created a ClusterLogForwarder custom resource (CR) object. Procedure Delete the Fluentd pods to force them to redeploy by running the following command: USD oc delete pod --selector logging-infra=collector 6.2.2. Troubleshooting Loki rate limit errors If the Log Forwarder API forwards a large block of messages that exceeds the rate limit to Loki, Loki generates rate limit ( 429 ) errors. These errors can occur during normal operation. For example, when adding the logging to a cluster that already has some logs, rate limit errors might occur while the logging tries to ingest all of the existing log entries. In this case, if the rate of addition of new logs is less than the total rate limit, the historical data is eventually ingested, and the rate limit errors are resolved without requiring user intervention. In cases where the rate limit errors continue to occur, you can fix the issue by modifying the LokiStack custom resource (CR). Important The LokiStack CR is not available on Grafana-hosted Loki. This topic does not apply to Grafana-hosted Loki servers. Conditions The Log Forwarder API is configured to forward logs to Loki. Your system sends a block of messages that is larger than 2 MB to Loki. For example: "values":[["1630410392689800468","{\"kind\":\"Event\",\"apiVersion\":\ ....... ...... ...... ...... \"received_at\":\"2021-08-31T11:46:32.800278+00:00\",\"version\":\"1.7.4 1.6.0\"}},\"@timestamp\":\"2021-08-31T11:46:32.799692+00:00\",\"viaq_index_name\":\"audit-write\",\"viaq_msg_id\":\"MzFjYjJkZjItNjY0MC00YWU4LWIwMTEtNGNmM2E5ZmViMGU4\",\"log_type\":\"audit\"}"]]}]} After you enter oc logs -n openshift-logging -l component=collector , the collector logs in your cluster show a line containing one of the following error messages: 429 Too Many Requests Ingestion rate limit exceeded Example Vector error message 2023-08-25T16:08:49.301780Z WARN sink{component_kind="sink" component_id=default_loki_infra component_type=loki component_name=default_loki_infra}: vector::sinks::util::retries: Retrying after error. error=Server responded with an error: 429 Too Many Requests internal_log_rate_limit=true Example Fluentd error message 2023-08-30 14:52:15 +0000 [warn]: [default_loki_infra] failed to flush the buffer. retry_times=2 next_retry_time=2023-08-30 14:52:19 +0000 chunk="604251225bf5378ed1567231a1c03b8b" error_class=Fluent::Plugin::LokiOutput::LogPostError error="429 Too Many Requests Ingestion rate limit exceeded for user infrastructure (limit: 4194304 bytes/sec) while attempting to ingest '4082' lines totaling '7820025' bytes, reduce log volume or contact your Loki administrator to see if the limit can be increased\n" The error is also visible on the receiving end. For example, in the LokiStack ingester pod: Example Loki ingester error message level=warn ts=2023-08-30T14:57:34.155592243Z caller=grpc_logging.go:43 duration=1.434942ms method=/logproto.Pusher/Push err="rpc error: code = Code(429) desc = entry with timestamp 2023-08-30 14:57:32.012778399 +0000 UTC ignored, reason: 'Per stream rate limit exceeded (limit: 3MB/sec) while attempting to ingest for stream Procedure Update the ingestionBurstSize and ingestionRate fields in the LokiStack CR: apiVersion: loki.grafana.com/v1 kind: LokiStack metadata: name: logging-loki namespace: openshift-logging spec: limits: global: ingestion: ingestionBurstSize: 16 1 ingestionRate: 8 2 # ... 1 The ingestionBurstSize field defines the maximum local rate-limited sample size per distributor replica in MB. This value is a hard limit. Set this value to at least the maximum logs size expected in a single push request. Single requests that are larger than the ingestionBurstSize value are not permitted. 2 The ingestionRate field is a soft limit on the maximum amount of ingested samples per second in MB. Rate limit errors occur if the rate of logs exceeds the limit, but the collector retries sending the logs. As long as the total average is lower than the limit, the system recovers and errors are resolved without user intervention. 6.3. Troubleshooting logging alerts You can use the following procedures to troubleshoot logging alerts on your cluster. 6.3.1. Elasticsearch cluster health status is red At least one primary shard and its replicas are not allocated to a node. Use the following procedure to troubleshoot this alert. Tip Some commands in this documentation reference an Elasticsearch pod by using a USDES_POD_NAME shell variable. If you want to copy and paste the commands directly from this documentation, you must set this variable to a value that is valid for your Elasticsearch cluster. You can list the available Elasticsearch pods by running the following command: USD oc -n openshift-logging get pods -l component=elasticsearch Choose one of the pods listed and set the USDES_POD_NAME variable, by running the following command: USD export ES_POD_NAME=<elasticsearch_pod_name> You can now use the USDES_POD_NAME variable in commands. Procedure Check the Elasticsearch cluster health and verify that the cluster status is red by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- health List the nodes that have joined the cluster by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=_cat/nodes?v List the Elasticsearch pods and compare them with the nodes in the command output from the step, by running the following command: USD oc -n openshift-logging get pods -l component=elasticsearch If some of the Elasticsearch nodes have not joined the cluster, perform the following steps. Confirm that Elasticsearch has an elected master node by running the following command and observing the output: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=_cat/master?v Review the pod logs of the elected master node for issues by running the following command and observing the output: USD oc logs <elasticsearch_master_pod_name> -c elasticsearch -n openshift-logging Review the logs of nodes that have not joined the cluster for issues by running the following command and observing the output: USD oc logs <elasticsearch_node_name> -c elasticsearch -n openshift-logging If all the nodes have joined the cluster, check if the cluster is in the process of recovering by running the following command and observing the output: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=_cat/recovery?active_only=true If there is no command output, the recovery process might be delayed or stalled by pending tasks. Check if there are pending tasks by running the following command and observing the output: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- health | grep number_of_pending_tasks If there are pending tasks, monitor their status. If their status changes and indicates that the cluster is recovering, continue waiting. The recovery time varies according to the size of the cluster and other factors. Otherwise, if the status of the pending tasks does not change, this indicates that the recovery has stalled. If it seems like the recovery has stalled, check if the cluster.routing.allocation.enable value is set to none , by running the following command and observing the output: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=_cluster/settings?pretty If the cluster.routing.allocation.enable value is set to none , set it to all , by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=_cluster/settings?pretty \ -X PUT -d '{"persistent": {"cluster.routing.allocation.enable":"all"}}' Check if any indices are still red by running the following command and observing the output: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=_cat/indices?v If any indices are still red, try to clear them by performing the following steps. Clear the cache by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=<elasticsearch_index_name>/_cache/clear?pretty Increase the max allocation retries by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=<elasticsearch_index_name>/_settings?pretty \ -X PUT -d '{"index.allocation.max_retries":10}' Delete all the scroll items by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=_search/scroll/_all -X DELETE Increase the timeout by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=<elasticsearch_index_name>/_settings?pretty \ -X PUT -d '{"index.unassigned.node_left.delayed_timeout":"10m"}' If the preceding steps do not clear the red indices, delete the indices individually. Identify the red index name by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=_cat/indices?v Delete the red index by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=<elasticsearch_red_index_name> -X DELETE If there are no red indices and the cluster status is red, check for a continuous heavy processing load on a data node. Check if the Elasticsearch JVM Heap usage is high by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=_nodes/stats?pretty In the command output, review the node_name.jvm.mem.heap_used_percent field to determine the JVM Heap usage. Check for high CPU utilization. For more information about CPU utilitzation, see the OpenShift Container Platform "Reviewing monitoring dashboards" documentation. Additional resources Reviewing monitoring dashboards as a cluster administrator Fix a red or yellow cluster status 6.3.2. Elasticsearch cluster health status is yellow Replica shards for at least one primary shard are not allocated to nodes. Increase the node count by adjusting the nodeCount value in the ClusterLogging custom resource (CR). Additional resources Fix a red or yellow cluster status 6.3.3. Elasticsearch node disk low watermark reached Elasticsearch does not allocate shards to nodes that reach the low watermark. Tip Some commands in this documentation reference an Elasticsearch pod by using a USDES_POD_NAME shell variable. If you want to copy and paste the commands directly from this documentation, you must set this variable to a value that is valid for your Elasticsearch cluster. You can list the available Elasticsearch pods by running the following command: USD oc -n openshift-logging get pods -l component=elasticsearch Choose one of the pods listed and set the USDES_POD_NAME variable, by running the following command: USD export ES_POD_NAME=<elasticsearch_pod_name> You can now use the USDES_POD_NAME variable in commands. Procedure Identify the node on which Elasticsearch is deployed by running the following command: USD oc -n openshift-logging get po -o wide Check if there are unassigned shards by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=_cluster/health?pretty | grep unassigned_shards If there are unassigned shards, check the disk space on each node, by running the following command: USD for pod in `oc -n openshift-logging get po -l component=elasticsearch -o jsonpath='{.items[*].metadata.name}'`; \ do echo USDpod; oc -n openshift-logging exec -c elasticsearch USDpod \ -- df -h /elasticsearch/persistent; done In the command output, check the Use column to determine the used disk percentage on that node. Example output elasticsearch-cdm-kcrsda6l-1-586cc95d4f-h8zq8 Filesystem Size Used Avail Use% Mounted on /dev/nvme1n1 19G 522M 19G 3% /elasticsearch/persistent elasticsearch-cdm-kcrsda6l-2-5b548fc7b-cwwk7 Filesystem Size Used Avail Use% Mounted on /dev/nvme2n1 19G 522M 19G 3% /elasticsearch/persistent elasticsearch-cdm-kcrsda6l-3-5dfc884d99-59tjw Filesystem Size Used Avail Use% Mounted on /dev/nvme3n1 19G 528M 19G 3% /elasticsearch/persistent If the used disk percentage is above 85%, the node has exceeded the low watermark, and shards can no longer be allocated to this node. To check the current redundancyPolicy , run the following command: USD oc -n openshift-logging get es elasticsearch \ -o jsonpath='{.spec.redundancyPolicy}' If you are using a ClusterLogging resource on your cluster, run the following command: USD oc -n openshift-logging get cl \ -o jsonpath='{.items[*].spec.logStore.elasticsearch.redundancyPolicy}' If the cluster redundancyPolicy value is higher than the SingleRedundancy value, set it to the SingleRedundancy value and save this change. If the preceding steps do not fix the issue, delete the old indices. Check the status of all indices on Elasticsearch by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- indices Identify an old index that can be deleted. Delete the index by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=<elasticsearch_index_name> -X DELETE 6.3.4. Elasticsearch node disk high watermark reached Elasticsearch attempts to relocate shards away from a node that has reached the high watermark to a node with low disk usage that has not crossed any watermark threshold limits. To allocate shards to a particular node, you must free up some space on that node. If increasing the disk space is not possible, try adding a new data node to the cluster, or decrease the total cluster redundancy policy. Tip Some commands in this documentation reference an Elasticsearch pod by using a USDES_POD_NAME shell variable. If you want to copy and paste the commands directly from this documentation, you must set this variable to a value that is valid for your Elasticsearch cluster. You can list the available Elasticsearch pods by running the following command: USD oc -n openshift-logging get pods -l component=elasticsearch Choose one of the pods listed and set the USDES_POD_NAME variable, by running the following command: USD export ES_POD_NAME=<elasticsearch_pod_name> You can now use the USDES_POD_NAME variable in commands. Procedure Identify the node on which Elasticsearch is deployed by running the following command: USD oc -n openshift-logging get po -o wide Check the disk space on each node: USD for pod in `oc -n openshift-logging get po -l component=elasticsearch -o jsonpath='{.items[*].metadata.name}'`; \ do echo USDpod; oc -n openshift-logging exec -c elasticsearch USDpod \ -- df -h /elasticsearch/persistent; done Check if the cluster is rebalancing: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=_cluster/health?pretty | grep relocating_shards If the command output shows relocating shards, the high watermark has been exceeded. The default value of the high watermark is 90%. Increase the disk space on all nodes. If increasing the disk space is not possible, try adding a new data node to the cluster, or decrease the total cluster redundancy policy. To check the current redundancyPolicy , run the following command: USD oc -n openshift-logging get es elasticsearch \ -o jsonpath='{.spec.redundancyPolicy}' If you are using a ClusterLogging resource on your cluster, run the following command: USD oc -n openshift-logging get cl \ -o jsonpath='{.items[*].spec.logStore.elasticsearch.redundancyPolicy}' If the cluster redundancyPolicy value is higher than the SingleRedundancy value, set it to the SingleRedundancy value and save this change. If the preceding steps do not fix the issue, delete the old indices. Check the status of all indices on Elasticsearch by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- indices Identify an old index that can be deleted. Delete the index by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=<elasticsearch_index_name> -X DELETE 6.3.5. Elasticsearch node disk flood watermark reached Elasticsearch enforces a read-only index block on every index that has both of these conditions: One or more shards are allocated to the node. One or more disks exceed the flood stage . Use the following procedure to troubleshoot this alert. Tip Some commands in this documentation reference an Elasticsearch pod by using a USDES_POD_NAME shell variable. If you want to copy and paste the commands directly from this documentation, you must set this variable to a value that is valid for your Elasticsearch cluster. You can list the available Elasticsearch pods by running the following command: USD oc -n openshift-logging get pods -l component=elasticsearch Choose one of the pods listed and set the USDES_POD_NAME variable, by running the following command: USD export ES_POD_NAME=<elasticsearch_pod_name> You can now use the USDES_POD_NAME variable in commands. Procedure Get the disk space of the Elasticsearch node: USD for pod in `oc -n openshift-logging get po -l component=elasticsearch -o jsonpath='{.items[*].metadata.name}'`; \ do echo USDpod; oc -n openshift-logging exec -c elasticsearch USDpod \ -- df -h /elasticsearch/persistent; done In the command output, check the Avail column to determine the free disk space on that node. Example output elasticsearch-cdm-kcrsda6l-1-586cc95d4f-h8zq8 Filesystem Size Used Avail Use% Mounted on /dev/nvme1n1 19G 522M 19G 3% /elasticsearch/persistent elasticsearch-cdm-kcrsda6l-2-5b548fc7b-cwwk7 Filesystem Size Used Avail Use% Mounted on /dev/nvme2n1 19G 522M 19G 3% /elasticsearch/persistent elasticsearch-cdm-kcrsda6l-3-5dfc884d99-59tjw Filesystem Size Used Avail Use% Mounted on /dev/nvme3n1 19G 528M 19G 3% /elasticsearch/persistent Increase the disk space on all nodes. If increasing the disk space is not possible, try adding a new data node to the cluster, or decrease the total cluster redundancy policy. To check the current redundancyPolicy , run the following command: USD oc -n openshift-logging get es elasticsearch \ -o jsonpath='{.spec.redundancyPolicy}' If you are using a ClusterLogging resource on your cluster, run the following command: USD oc -n openshift-logging get cl \ -o jsonpath='{.items[*].spec.logStore.elasticsearch.redundancyPolicy}' If the cluster redundancyPolicy value is higher than the SingleRedundancy value, set it to the SingleRedundancy value and save this change. If the preceding steps do not fix the issue, delete the old indices. Check the status of all indices on Elasticsearch by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- indices Identify an old index that can be deleted. Delete the index by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=<elasticsearch_index_name> -X DELETE Continue freeing up and monitoring the disk space. After the used disk space drops below 90%, unblock writing to this node by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=_all/_settings?pretty \ -X PUT -d '{"index.blocks.read_only_allow_delete": null}' 6.3.6. Elasticsearch JVM heap usage is high The Elasticsearch node Java virtual machine (JVM) heap memory used is above 75%. Consider increasing the heap size . 6.3.7. Aggregated logging system CPU is high System CPU usage on the node is high. Check the CPU of the cluster node. Consider allocating more CPU resources to the node. 6.3.8. Elasticsearch process CPU is high Elasticsearch process CPU usage on the node is high. Check the CPU of the cluster node. Consider allocating more CPU resources to the node. 6.3.9. Elasticsearch disk space is running low Elasticsearch is predicted to run out of disk space within the 6 hours based on current disk usage. Use the following procedure to troubleshoot this alert. Procedure Get the disk space of the Elasticsearch node: USD for pod in `oc -n openshift-logging get po -l component=elasticsearch -o jsonpath='{.items[*].metadata.name}'`; \ do echo USDpod; oc -n openshift-logging exec -c elasticsearch USDpod \ -- df -h /elasticsearch/persistent; done In the command output, check the Avail column to determine the free disk space on that node. Example output elasticsearch-cdm-kcrsda6l-1-586cc95d4f-h8zq8 Filesystem Size Used Avail Use% Mounted on /dev/nvme1n1 19G 522M 19G 3% /elasticsearch/persistent elasticsearch-cdm-kcrsda6l-2-5b548fc7b-cwwk7 Filesystem Size Used Avail Use% Mounted on /dev/nvme2n1 19G 522M 19G 3% /elasticsearch/persistent elasticsearch-cdm-kcrsda6l-3-5dfc884d99-59tjw Filesystem Size Used Avail Use% Mounted on /dev/nvme3n1 19G 528M 19G 3% /elasticsearch/persistent Increase the disk space on all nodes. If increasing the disk space is not possible, try adding a new data node to the cluster, or decrease the total cluster redundancy policy. To check the current redundancyPolicy , run the following command: USD oc -n openshift-logging get es elasticsearch -o jsonpath='{.spec.redundancyPolicy}' If you are using a ClusterLogging resource on your cluster, run the following command: USD oc -n openshift-logging get cl \ -o jsonpath='{.items[*].spec.logStore.elasticsearch.redundancyPolicy}' If the cluster redundancyPolicy value is higher than the SingleRedundancy value, set it to the SingleRedundancy value and save this change. If the preceding steps do not fix the issue, delete the old indices. Check the status of all indices on Elasticsearch by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- indices Identify an old index that can be deleted. Delete the index by running the following command: USD oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME \ -- es_util --query=<elasticsearch_index_name> -X DELETE Additional resources Fix a red or yellow cluster status 6.3.10. Elasticsearch FileDescriptor usage is high Based on current usage trends, the predicted number of file descriptors on the node is insufficient. Check the value of max_file_descriptors for each node as described in the Elasticsearch File Descriptors documentation. 6.4. Viewing the status of the Elasticsearch log store You can view the status of the OpenShift Elasticsearch Operator and for a number of Elasticsearch components. 6.4.1. Viewing the status of the Elasticsearch log store You can view the status of the Elasticsearch log store. Prerequisites The Red Hat OpenShift Logging Operator and OpenShift Elasticsearch Operator are installed. Procedure Change to the openshift-logging project by running the following command: USD oc project openshift-logging To view the status: Get the name of the Elasticsearch log store instance by running the following command: USD oc get Elasticsearch Example output NAME AGE elasticsearch 5h9m Get the Elasticsearch log store status by running the following command: USD oc get Elasticsearch <Elasticsearch-instance> -o yaml For example: USD oc get Elasticsearch elasticsearch -n openshift-logging -o yaml The output includes information similar to the following: Example output status: 1 cluster: 2 activePrimaryShards: 30 activeShards: 60 initializingShards: 0 numDataNodes: 3 numNodes: 3 pendingTasks: 0 relocatingShards: 0 status: green unassignedShards: 0 clusterHealth: "" conditions: [] 3 nodes: 4 - deploymentName: elasticsearch-cdm-zjf34ved-1 upgradeStatus: {} - deploymentName: elasticsearch-cdm-zjf34ved-2 upgradeStatus: {} - deploymentName: elasticsearch-cdm-zjf34ved-3 upgradeStatus: {} pods: 5 client: failed: [] notReady: [] ready: - elasticsearch-cdm-zjf34ved-1-6d7fbf844f-sn422 - elasticsearch-cdm-zjf34ved-2-dfbd988bc-qkzjz - elasticsearch-cdm-zjf34ved-3-c8f566f7c-t7zkt data: failed: [] notReady: [] ready: - elasticsearch-cdm-zjf34ved-1-6d7fbf844f-sn422 - elasticsearch-cdm-zjf34ved-2-dfbd988bc-qkzjz - elasticsearch-cdm-zjf34ved-3-c8f566f7c-t7zkt master: failed: [] notReady: [] ready: - elasticsearch-cdm-zjf34ved-1-6d7fbf844f-sn422 - elasticsearch-cdm-zjf34ved-2-dfbd988bc-qkzjz - elasticsearch-cdm-zjf34ved-3-c8f566f7c-t7zkt shardAllocationEnabled: all 1 In the output, the cluster status fields appear in the status stanza. 2 The status of the Elasticsearch log store: The number of active primary shards. The number of active shards. The number of shards that are initializing. The number of Elasticsearch log store data nodes. The total number of Elasticsearch log store nodes. The number of pending tasks. The Elasticsearch log store status: green , red , yellow . The number of unassigned shards. 3 Any status conditions, if present. The Elasticsearch log store status indicates the reasons from the scheduler if a pod could not be placed. Any events related to the following conditions are shown: Container Waiting for both the Elasticsearch log store and proxy containers. Container Terminated for both the Elasticsearch log store and proxy containers. Pod unschedulable. Also, a condition is shown for a number of issues; see Example condition messages . 4 The Elasticsearch log store nodes in the cluster, with upgradeStatus . 5 The Elasticsearch log store client, data, and master pods in the cluster, listed under failed , notReady , or ready state. 6.4.1.1. Example condition messages The following are examples of some condition messages from the Status section of the Elasticsearch instance. The following status message indicates that a node has exceeded the configured low watermark, and no shard will be allocated to this node. status: nodes: - conditions: - lastTransitionTime: 2019-03-15T15:57:22Z message: Disk storage usage for node is 27.5gb (36.74%). Shards will be not be allocated on this node. reason: Disk Watermark Low status: "True" type: NodeStorage deploymentName: example-elasticsearch-cdm-0-1 upgradeStatus: {} The following status message indicates that a node has exceeded the configured high watermark, and shards will be relocated to other nodes. status: nodes: - conditions: - lastTransitionTime: 2019-03-15T16:04:45Z message: Disk storage usage for node is 27.5gb (36.74%). Shards will be relocated from this node. reason: Disk Watermark High status: "True" type: NodeStorage deploymentName: example-elasticsearch-cdm-0-1 upgradeStatus: {} The following status message indicates that the Elasticsearch log store node selector in the custom resource (CR) does not match any nodes in the cluster: status: nodes: - conditions: - lastTransitionTime: 2019-04-10T02:26:24Z message: '0/8 nodes are available: 8 node(s) didn''t match node selector.' reason: Unschedulable status: "True" type: Unschedulable The following status message indicates that the Elasticsearch log store CR uses a non-existent persistent volume claim (PVC). status: nodes: - conditions: - last Transition Time: 2019-04-10T05:55:51Z message: pod has unbound immediate PersistentVolumeClaims (repeated 5 times) reason: Unschedulable status: True type: Unschedulable The following status message indicates that your Elasticsearch log store cluster does not have enough nodes to support the redundancy policy. status: clusterHealth: "" conditions: - lastTransitionTime: 2019-04-17T20:01:31Z message: Wrong RedundancyPolicy selected. Choose different RedundancyPolicy or add more nodes with data roles reason: Invalid Settings status: "True" type: InvalidRedundancy This status message indicates your cluster has too many control plane nodes: status: clusterHealth: green conditions: - lastTransitionTime: '2019-04-17T20:12:34Z' message: >- Invalid master nodes count. Please ensure there are no more than 3 total nodes with master roles reason: Invalid Settings status: 'True' type: InvalidMasters The following status message indicates that Elasticsearch storage does not support the change you tried to make. For example: status: clusterHealth: green conditions: - lastTransitionTime: "2021-05-07T01:05:13Z" message: Changing the storage structure for a custom resource is not supported reason: StorageStructureChangeIgnored status: 'True' type: StorageStructureChangeIgnored The reason and type fields specify the type of unsupported change: StorageClassNameChangeIgnored Unsupported change to the storage class name. StorageSizeChangeIgnored Unsupported change the storage size. StorageStructureChangeIgnored Unsupported change between ephemeral and persistent storage structures. Important If you try to configure the ClusterLogging CR to switch from ephemeral to persistent storage, the OpenShift Elasticsearch Operator creates a persistent volume claim (PVC) but does not create a persistent volume (PV). To clear the StorageStructureChangeIgnored status, you must revert the change to the ClusterLogging CR and delete the PVC. 6.4.2. Viewing the status of the log store components You can view the status for a number of the log store components. Elasticsearch indices You can view the status of the Elasticsearch indices. Get the name of an Elasticsearch pod: USD oc get pods --selector component=elasticsearch -o name Example output pod/elasticsearch-cdm-1godmszn-1-6f8495-vp4lw pod/elasticsearch-cdm-1godmszn-2-5769cf-9ms2n pod/elasticsearch-cdm-1godmszn-3-f66f7d-zqkz7 Get the status of the indices: USD oc exec elasticsearch-cdm-4vjor49p-2-6d4d7db474-q2w7z -- indices Example output Defaulting container name to elasticsearch. Use 'oc describe pod/elasticsearch-cdm-4vjor49p-2-6d4d7db474-q2w7z -n openshift-logging' to see all of the containers in this pod. green open infra-000002 S4QANnf1QP6NgCegfnrnbQ 3 1 119926 0 157 78 green open audit-000001 8_EQx77iQCSTzFOXtxRqFw 3 1 0 0 0 0 green open .security iDjscH7aSUGhIdq0LheLBQ 1 1 5 0 0 0 green open .kibana_-377444158_kubeadmin yBywZ9GfSrKebz5gWBZbjw 3 1 1 0 0 0 green open infra-000001 z6Dpe__ORgiopEpW6Yl44A 3 1 871000 0 874 436 green open app-000001 hIrazQCeSISewG3c2VIvsQ 3 1 2453 0 3 1 green open .kibana_1 JCitcBMSQxKOvIq6iQW6wg 1 1 0 0 0 0 green open .kibana_-1595131456_user1 gIYFIEGRRe-ka0W3okS-mQ 3 1 1 0 0 0 Log store pods You can view the status of the pods that host the log store. Get the name of a pod: USD oc get pods --selector component=elasticsearch -o name Example output pod/elasticsearch-cdm-1godmszn-1-6f8495-vp4lw pod/elasticsearch-cdm-1godmszn-2-5769cf-9ms2n pod/elasticsearch-cdm-1godmszn-3-f66f7d-zqkz7 Get the status of a pod: USD oc describe pod elasticsearch-cdm-1godmszn-1-6f8495-vp4lw The output includes the following status information: Example output .... Status: Running .... Containers: elasticsearch: Container ID: cri-o://b7d44e0a9ea486e27f47763f5bb4c39dfd2 State: Running Started: Mon, 08 Jun 2020 10:17:56 -0400 Ready: True Restart Count: 0 Readiness: exec [/usr/share/elasticsearch/probe/readiness.sh] delay=10s timeout=30s period=5s #success=1 #failure=3 .... proxy: Container ID: cri-o://3f77032abaddbb1652c116278652908dc01860320b8a4e741d06894b2f8f9aa1 State: Running Started: Mon, 08 Jun 2020 10:18:38 -0400 Ready: True Restart Count: 0 .... Conditions: Type Status Initialized True Ready True ContainersReady True PodScheduled True .... Events: <none> Log storage pod deployment configuration You can view the status of the log store deployment configuration. Get the name of a deployment configuration: USD oc get deployment --selector component=elasticsearch -o name Example output deployment.extensions/elasticsearch-cdm-1gon-1 deployment.extensions/elasticsearch-cdm-1gon-2 deployment.extensions/elasticsearch-cdm-1gon-3 Get the deployment configuration status: USD oc describe deployment elasticsearch-cdm-1gon-1 The output includes the following status information: Example output .... Containers: elasticsearch: Image: registry.redhat.io/openshift-logging/elasticsearch6-rhel8 Readiness: exec [/usr/share/elasticsearch/probe/readiness.sh] delay=10s timeout=30s period=5s #success=1 #failure=3 .... Conditions: Type Status Reason ---- ------ ------ Progressing Unknown DeploymentPaused Available True MinimumReplicasAvailable .... Events: <none> Log store replica set You can view the status of the log store replica set. Get the name of a replica set: USD oc get replicaSet --selector component=elasticsearch -o name replicaset.extensions/elasticsearch-cdm-1gon-1-6f8495 replicaset.extensions/elasticsearch-cdm-1gon-2-5769cf replicaset.extensions/elasticsearch-cdm-1gon-3-f66f7d Get the status of the replica set: USD oc describe replicaSet elasticsearch-cdm-1gon-1-6f8495 The output includes the following status information: Example output .... Containers: elasticsearch: Image: registry.redhat.io/openshift-logging/elasticsearch6-rhel8@sha256:4265742c7cdd85359140e2d7d703e4311b6497eec7676957f455d6908e7b1c25 Readiness: exec [/usr/share/elasticsearch/probe/readiness.sh] delay=10s timeout=30s period=5s #success=1 #failure=3 .... Events: <none> 6.4.3. Elasticsearch cluster status A dashboard in the Observe section of the OpenShift Container Platform web console displays the status of the Elasticsearch cluster. To get the status of the OpenShift Elasticsearch cluster, visit the dashboard in the Observe section of the OpenShift Container Platform web console at <cluster_url>/monitoring/dashboards/grafana-dashboard-cluster-logging . Elasticsearch status fields eo_elasticsearch_cr_cluster_management_state Shows whether the Elasticsearch cluster is in a managed or unmanaged state. For example: eo_elasticsearch_cr_cluster_management_state{state="managed"} 1 eo_elasticsearch_cr_cluster_management_state{state="unmanaged"} 0 eo_elasticsearch_cr_restart_total Shows the number of times the Elasticsearch nodes have restarted for certificate restarts, rolling restarts, or scheduled restarts. For example: eo_elasticsearch_cr_restart_total{reason="cert_restart"} 1 eo_elasticsearch_cr_restart_total{reason="rolling_restart"} 1 eo_elasticsearch_cr_restart_total{reason="scheduled_restart"} 3 es_index_namespaces_total Shows the total number of Elasticsearch index namespaces. For example: Total number of Namespaces. es_index_namespaces_total 5 es_index_document_count Shows the number of records for each namespace. For example: es_index_document_count{namespace="namespace_1"} 25 es_index_document_count{namespace="namespace_2"} 10 es_index_document_count{namespace="namespace_3"} 5 The "Secret Elasticsearch fields are either missing or empty" message If Elasticsearch is missing the admin-cert , admin-key , logging-es.crt , or logging-es.key files, the dashboard shows a status message similar to the following example: message": "Secret \"elasticsearch\" fields are either missing or empty: [admin-cert, admin-key, logging-es.crt, logging-es.key]", "reason": "Missing Required Secrets",

Commands:
oc project openshift-logging
oc get clusterlogging instance -o yaml
apiVersion: logging.openshift.io/v1 kind: ClusterLogging status: 1 collection: logs: fluentdStatus: daemonSet: fluentd 2 nodes: collector-2rhqp: ip-10-0-169-13.ec2.internal collector-6fgjh: ip-10-0-165-244.ec2.internal collector-6l2ff: ip-10-0-128-218.ec2.internal collector-54nx5: ip-10-0-139-30.ec2.internal collector-flpnn: ip-10-0-147-228.ec2.internal collector-n2frh: ip-10-0-157-45.ec2.internal pods: failed: [] notReady: [] ready: - collector-2rhqp - collector-54nx5 - collector-6fgjh - collector-6l2ff - collector-flpnn - collector-n2frh logstore: 3 elasticsearchStatus: - ShardAllocationEnabled: all cluster: activePrimaryShards: 5 activeShards: 5 initializingShards: 0 numDataNodes: 1 numNodes: 1 pendingTasks: 0 relocatingShards: 0 status: green unassignedShards: 0 clusterName: elasticsearch nodeConditions: elasticsearch-cdm-mkkdys93-1: nodeCount: 1 pods: client: failed: notReady: ready: - elasticsearch-cdm-mkkdys93-1-7f7c6-mjm7c data: failed: notReady: ready: - elasticsearch-cdm-mkkdys93-1-7f7c6-mjm7c master: failed: notReady: ready: - elasticsearch-cdm-mkkdys93-1-7f7c6-mjm7c visualization: 4 kibanaStatus: - deployment: kibana pods: failed: [] notReady: [] ready: - kibana-7fb4fd4cc9-f2nls replicaSets: - kibana-7fb4fd4cc9 replicas: 1
nodes: - conditions: - lastTransitionTime: 2019-03-15T15:57:22Z message: Disk storage usage for node is 27.5gb (36.74%). Shards will be not be allocated on this node. reason: Disk Watermark Low status: "True" type: NodeStorage deploymentName: example-elasticsearch-clientdatamaster-0-1 upgradeStatus: {}
nodes: - conditions: - lastTransitionTime: 2019-03-15T16:04:45Z message: Disk storage usage for node is 27.5gb (36.74%). Shards will be relocated from this node. reason: Disk Watermark High status: "True" type: NodeStorage deploymentName: cluster-logging-operator upgradeStatus: {}
Elasticsearch Status: Shard Allocation Enabled: shard allocation unknown Cluster: Active Primary Shards: 0 Active Shards: 0 Initializing Shards: 0 Num Data Nodes: 0 Num Nodes: 0 Pending Tasks: 0 Relocating Shards: 0 Status: cluster health unknown Unassigned Shards: 0 Cluster Name: elasticsearch Node Conditions: elasticsearch-cdm-mkkdys93-1: Last Transition Time: 2019-06-26T03:37:32Z Message: 0/5 nodes are available: 5 node(s) didn't match node selector. Reason: Unschedulable Status: True Type: Unschedulable elasticsearch-cdm-mkkdys93-2: Node Count: 2 Pods: Client: Failed: Not Ready: elasticsearch-cdm-mkkdys93-1-75dd69dccd-f7f49 elasticsearch-cdm-mkkdys93-2-67c64f5f4c-n58vl Ready: Data: Failed: Not Ready: elasticsearch-cdm-mkkdys93-1-75dd69dccd-f7f49 elasticsearch-cdm-mkkdys93-2-67c64f5f4c-n58vl Ready: Master: Failed: Not Ready: elasticsearch-cdm-mkkdys93-1-75dd69dccd-f7f49 elasticsearch-cdm-mkkdys93-2-67c64f5f4c-n58vl Ready:
Node Conditions: elasticsearch-cdm-mkkdys93-1: Last Transition Time: 2019-06-26T03:37:32Z Message: pod has unbound immediate PersistentVolumeClaims (repeated 5 times) Reason: Unschedulable Status: True Type: Unschedulable
Status: Collection: Logs: Fluentd Status: Daemon Set: fluentd Nodes: Pods: Failed: Not Ready: Ready:
oc project openshift-logging
oc describe deployment cluster-logging-operator
Name: cluster-logging-operator . Conditions: Type Status Reason ---- ------ ------ Available True MinimumReplicasAvailable Progressing True NewReplicaSetAvailable . Events: Type Reason Age From Message ---- ------ ---- ---- ------- Normal ScalingReplicaSet 62m deployment-controller Scaled up replica set cluster-logging-operator-574b8987df to 1----
oc get replicaset
NAME DESIRED CURRENT READY AGE cluster-logging-operator-574b8987df 1 1 1 159m elasticsearch-cdm-uhr537yu-1-6869694fb 1 1 1 157m elasticsearch-cdm-uhr537yu-2-857b6d676f 1 1 1 156m elasticsearch-cdm-uhr537yu-3-5b6fdd8cfd 1 1 1 155m kibana-5bd5544f87 1 1 1 157m
oc describe replicaset cluster-logging-operator-574b8987df
Name: cluster-logging-operator-574b8987df . Replicas: 1 current / 1 desired Pods Status: 1 Running / 0 Waiting / 0 Succeeded / 0 Failed . Events: Type Reason Age From Message ---- ------ ---- ---- ------- Normal SuccessfulCreate 66m replicaset-controller Created pod: cluster-logging-operator-574b8987df-qjhqv----
oc delete pod --selector logging-infra=collector
"values":[["1630410392689800468","{\"kind\":\"Event\",\"apiVersion\": .... ... ... ... \"received_at\":\"2021-08-31T11:46:32.800278+00:00\",\"version\":\"1.7.4 1.6.0\"}},\"@timestamp\":\"2021-08-31T11:46:32.799692+00:00\",\"viaq_index_name\":\"audit-write\",\"viaq_msg_id\":\"MzFjYjJkZjItNjY0MC00YWU4LWIwMTEtNGNmM2E5ZmViMGU4\",\"log_type\":\"audit\"}"]]}]}
429 Too Many Requests Ingestion rate limit exceeded
2023-08-25T16:08:49.301780Z WARN sink{component_kind="sink" component_id=default_loki_infra component_type=loki component_name=default_loki_infra}: vector::sinks::util::retries: Retrying after error. error=Server responded with an error: 429 Too Many Requests internal_log_rate_limit=true
2023-08-30 14:52:15 +0000 [warn]: [default_loki_infra] failed to flush the buffer. retry_times=2 next_retry_time=2023-08-30 14:52:19 +0000 chunk="604251225bf5378ed1567231a1c03b8b" error_class=Fluent::Plugin::LokiOutput::LogPostError error="429 Too Many Requests Ingestion rate limit exceeded for user infrastructure (limit: 4194304 bytes/sec) while attempting to ingest '4082' lines totaling '7820025' bytes, reduce log volume or contact your Loki administrator to see if the limit can be increased\n"
level=warn ts=2023-08-30T14:57:34.155592243Z caller=grpc_logging.go:43 duration=1.434942ms method=/logproto.Pusher/Push err="rpc error: code = Code(429) desc = entry with timestamp 2023-08-30 14:57:32.012778399 +0000 UTC ignored, reason: 'Per stream rate limit exceeded (limit: 3MB/sec) while attempting to ingest for stream
apiVersion: loki.grafana.com/v1 kind: LokiStack metadata: name: logging-loki namespace: openshift-logging spec: limits: global: ingestion: ingestionBurstSize: 16 1 ingestionRate: 8 2
oc -n openshift-logging get pods -l component=elasticsearch
export ES_POD_NAME=<elasticsearch_pod_name>
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- health
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=_cat/nodes?v
oc -n openshift-logging get pods -l component=elasticsearch
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=_cat/master?v
oc logs <elasticsearch_master_pod_name> -c elasticsearch -n openshift-logging
oc logs <elasticsearch_node_name> -c elasticsearch -n openshift-logging
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=_cat/recovery?active_only=true
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- health | grep number_of_pending_tasks
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=_cluster/settings?pretty
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=_cluster/settings?pretty -X PUT -d '{"persistent": {"cluster.routing.allocation.enable":"all"}}'
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=_cat/indices?v
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=<elasticsearch_index_name>/_cache/clear?pretty
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=<elasticsearch_index_name>/_settings?pretty -X PUT -d '{"index.allocation.max_retries":10}'
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=_search/scroll/_all -X DELETE
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=<elasticsearch_index_name>/_settings?pretty -X PUT -d '{"index.unassigned.node_left.delayed_timeout":"10m"}'
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=_cat/indices?v
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=<elasticsearch_red_index_name> -X DELETE
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=_nodes/stats?pretty
oc -n openshift-logging get pods -l component=elasticsearch
export ES_POD_NAME=<elasticsearch_pod_name>
oc -n openshift-logging get po -o wide
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=_cluster/health?pretty | grep unassigned_shards
for pod in `oc -n openshift-logging get po -l component=elasticsearch -o jsonpath='{.items[*].metadata.name}'`; do echo USDpod; oc -n openshift-logging exec -c elasticsearch USDpod -- df -h /elasticsearch/persistent; done
elasticsearch-cdm-kcrsda6l-1-586cc95d4f-h8zq8 Filesystem Size Used Avail Use% Mounted on /dev/nvme1n1 19G 522M 19G 3% /elasticsearch/persistent elasticsearch-cdm-kcrsda6l-2-5b548fc7b-cwwk7 Filesystem Size Used Avail Use% Mounted on /dev/nvme2n1 19G 522M 19G 3% /elasticsearch/persistent elasticsearch-cdm-kcrsda6l-3-5dfc884d99-59tjw Filesystem Size Used Avail Use% Mounted on /dev/nvme3n1 19G 528M 19G 3% /elasticsearch/persistent
oc -n openshift-logging get es elasticsearch -o jsonpath='{.spec.redundancyPolicy}'
oc -n openshift-logging get cl -o jsonpath='{.items[*].spec.logStore.elasticsearch.redundancyPolicy}'
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- indices
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=<elasticsearch_index_name> -X DELETE
oc -n openshift-logging get pods -l component=elasticsearch
export ES_POD_NAME=<elasticsearch_pod_name>
oc -n openshift-logging get po -o wide
for pod in `oc -n openshift-logging get po -l component=elasticsearch -o jsonpath='{.items[*].metadata.name}'`; do echo USDpod; oc -n openshift-logging exec -c elasticsearch USDpod -- df -h /elasticsearch/persistent; done
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=_cluster/health?pretty | grep relocating_shards
oc -n openshift-logging get es elasticsearch -o jsonpath='{.spec.redundancyPolicy}'
oc -n openshift-logging get cl -o jsonpath='{.items[*].spec.logStore.elasticsearch.redundancyPolicy}'
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- indices
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=<elasticsearch_index_name> -X DELETE
oc -n openshift-logging get pods -l component=elasticsearch
export ES_POD_NAME=<elasticsearch_pod_name>
for pod in `oc -n openshift-logging get po -l component=elasticsearch -o jsonpath='{.items[*].metadata.name}'`; do echo USDpod; oc -n openshift-logging exec -c elasticsearch USDpod -- df -h /elasticsearch/persistent; done
elasticsearch-cdm-kcrsda6l-1-586cc95d4f-h8zq8 Filesystem Size Used Avail Use% Mounted on /dev/nvme1n1 19G 522M 19G 3% /elasticsearch/persistent elasticsearch-cdm-kcrsda6l-2-5b548fc7b-cwwk7 Filesystem Size Used Avail Use% Mounted on /dev/nvme2n1 19G 522M 19G 3% /elasticsearch/persistent elasticsearch-cdm-kcrsda6l-3-5dfc884d99-59tjw Filesystem Size Used Avail Use% Mounted on /dev/nvme3n1 19G 528M 19G 3% /elasticsearch/persistent
oc -n openshift-logging get es elasticsearch -o jsonpath='{.spec.redundancyPolicy}'
oc -n openshift-logging get cl -o jsonpath='{.items[*].spec.logStore.elasticsearch.redundancyPolicy}'
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- indices
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=<elasticsearch_index_name> -X DELETE
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=_all/_settings?pretty -X PUT -d '{"index.blocks.read_only_allow_delete": null}'
for pod in `oc -n openshift-logging get po -l component=elasticsearch -o jsonpath='{.items[*].metadata.name}'`; do echo USDpod; oc -n openshift-logging exec -c elasticsearch USDpod -- df -h /elasticsearch/persistent; done
elasticsearch-cdm-kcrsda6l-1-586cc95d4f-h8zq8 Filesystem Size Used Avail Use% Mounted on /dev/nvme1n1 19G 522M 19G 3% /elasticsearch/persistent elasticsearch-cdm-kcrsda6l-2-5b548fc7b-cwwk7 Filesystem Size Used Avail Use% Mounted on /dev/nvme2n1 19G 522M 19G 3% /elasticsearch/persistent elasticsearch-cdm-kcrsda6l-3-5dfc884d99-59tjw Filesystem Size Used Avail Use% Mounted on /dev/nvme3n1 19G 528M 19G 3% /elasticsearch/persistent
oc -n openshift-logging get es elasticsearch -o jsonpath='{.spec.redundancyPolicy}'
oc -n openshift-logging get cl -o jsonpath='{.items[*].spec.logStore.elasticsearch.redundancyPolicy}'
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- indices
oc exec -n openshift-logging -c elasticsearch USDES_POD_NAME -- es_util --query=<elasticsearch_index_name> -X DELETE
oc project openshift-logging
oc get Elasticsearch
NAME AGE elasticsearch 5h9m
oc get Elasticsearch <Elasticsearch-instance> -o yaml
oc get Elasticsearch elasticsearch -n openshift-logging -o yaml
status: 1 cluster: 2 activePrimaryShards: 30 activeShards: 60 initializingShards: 0 numDataNodes: 3 numNodes: 3 pendingTasks: 0 relocatingShards: 0 status: green unassignedShards: 0 clusterHealth: "" conditions: [] 3 nodes: 4 - deploymentName: elasticsearch-cdm-zjf34ved-1 upgradeStatus: {} - deploymentName: elasticsearch-cdm-zjf34ved-2 upgradeStatus: {} - deploymentName: elasticsearch-cdm-zjf34ved-3 upgradeStatus: {} pods: 5 client: failed: [] notReady: [] ready: - elasticsearch-cdm-zjf34ved-1-6d7fbf844f-sn422 - elasticsearch-cdm-zjf34ved-2-dfbd988bc-qkzjz - elasticsearch-cdm-zjf34ved-3-c8f566f7c-t7zkt data: failed: [] notReady: [] ready: - elasticsearch-cdm-zjf34ved-1-6d7fbf844f-sn422 - elasticsearch-cdm-zjf34ved-2-dfbd988bc-qkzjz - elasticsearch-cdm-zjf34ved-3-c8f566f7c-t7zkt master: failed: [] notReady: [] ready: - elasticsearch-cdm-zjf34ved-1-6d7fbf844f-sn422 - elasticsearch-cdm-zjf34ved-2-dfbd988bc-qkzjz - elasticsearch-cdm-zjf34ved-3-c8f566f7c-t7zkt shardAllocationEnabled: all
status: nodes: - conditions: - lastTransitionTime: 2019-03-15T15:57:22Z message: Disk storage usage for node is 27.5gb (36.74%). Shards will be not be allocated on this node. reason: Disk Watermark Low status: "True" type: NodeStorage deploymentName: example-elasticsearch-cdm-0-1 upgradeStatus: {}
status: nodes: - conditions: - lastTransitionTime: 2019-03-15T16:04:45Z message: Disk storage usage for node is 27.5gb (36.74%). Shards will be relocated from this node. reason: Disk Watermark High status: "True" type: NodeStorage deploymentName: example-elasticsearch-cdm-0-1 upgradeStatus: {}
status: nodes: - conditions: - lastTransitionTime: 2019-04-10T02:26:24Z message: '0/8 nodes are available: 8 node(s) didn''t match node selector.' reason: Unschedulable status: "True" type: Unschedulable
status: nodes: - conditions: - last Transition Time: 2019-04-10T05:55:51Z message: pod has unbound immediate PersistentVolumeClaims (repeated 5 times) reason: Unschedulable status: True type: Unschedulable
status: clusterHealth: "" conditions: - lastTransitionTime: 2019-04-17T20:01:31Z message: Wrong RedundancyPolicy selected. Choose different RedundancyPolicy or add more nodes with data roles reason: Invalid Settings status: "True" type: InvalidRedundancy
status: clusterHealth: green conditions: - lastTransitionTime: '2019-04-17T20:12:34Z' message: >- Invalid master nodes count. Please ensure there are no more than 3 total nodes with master roles reason: Invalid Settings status: 'True' type: InvalidMasters
status: clusterHealth: green conditions: - lastTransitionTime: "2021-05-07T01:05:13Z" message: Changing the storage structure for a custom resource is not supported reason: StorageStructureChangeIgnored status: 'True' type: StorageStructureChangeIgnored
oc get pods --selector component=elasticsearch -o name
pod/elasticsearch-cdm-1godmszn-1-6f8495-vp4lw pod/elasticsearch-cdm-1godmszn-2-5769cf-9ms2n pod/elasticsearch-cdm-1godmszn-3-f66f7d-zqkz7
oc exec elasticsearch-cdm-4vjor49p-2-6d4d7db474-q2w7z -- indices
Defaulting container name to elasticsearch. Use 'oc describe pod/elasticsearch-cdm-4vjor49p-2-6d4d7db474-q2w7z -n openshift-logging' to see all of the containers in this pod. green open infra-000002 S4QANnf1QP6NgCegfnrnbQ 3 1 119926 0 157 78 green open audit-000001 8_EQx77iQCSTzFOXtxRqFw 3 1 0 0 0 0 green open .security iDjscH7aSUGhIdq0LheLBQ 1 1 5 0 0 0 green open .kibana_-377444158_kubeadmin yBywZ9GfSrKebz5gWBZbjw 3 1 1 0 0 0 green open infra-000001 z6Dpe__ORgiopEpW6Yl44A 3 1 871000 0 874 436 green open app-000001 hIrazQCeSISewG3c2VIvsQ 3 1 2453 0 3 1 green open .kibana_1 JCitcBMSQxKOvIq6iQW6wg 1 1 0 0 0 0 green open .kibana_-1595131456_user1 gIYFIEGRRe-ka0W3okS-mQ 3 1 1 0 0 0
oc get pods --selector component=elasticsearch -o name
pod/elasticsearch-cdm-1godmszn-1-6f8495-vp4lw pod/elasticsearch-cdm-1godmszn-2-5769cf-9ms2n pod/elasticsearch-cdm-1godmszn-3-f66f7d-zqkz7
oc describe pod elasticsearch-cdm-1godmszn-1-6f8495-vp4lw
. Status: Running . Containers: elasticsearch: Container ID: cri-o://b7d44e0a9ea486e27f47763f5bb4c39dfd2 State: Running Started: Mon, 08 Jun 2020 10:17:56 -0400 Ready: True Restart Count: 0 Readiness: exec [/usr/share/elasticsearch/probe/readiness.sh] delay=10s timeout=30s period=5s #success=1 #failure=3 . proxy: Container ID: cri-o://3f77032abaddbb1652c116278652908dc01860320b8a4e741d06894b2f8f9aa1 State: Running Started: Mon, 08 Jun 2020 10:18:38 -0400 Ready: True Restart Count: 0 . Conditions: Type Status Initialized True Ready True ContainersReady True PodScheduled True . Events: <none>
oc get deployment --selector component=elasticsearch -o name
deployment.extensions/elasticsearch-cdm-1gon-1 deployment.extensions/elasticsearch-cdm-1gon-2 deployment.extensions/elasticsearch-cdm-1gon-3
oc describe deployment elasticsearch-cdm-1gon-1
. Containers: elasticsearch: Image: registry.redhat.io/openshift-logging/elasticsearch6-rhel8 Readiness: exec [/usr/share/elasticsearch/probe/readiness.sh] delay=10s timeout=30s period=5s #success=1 #failure=3 . Conditions: Type Status Reason ---- ------ ------ Progressing Unknown DeploymentPaused Available True MinimumReplicasAvailable . Events: <none>
oc get replicaSet --selector component=elasticsearch -o name replicaset.extensions/elasticsearch-cdm-1gon-1-6f8495 replicaset.extensions/elasticsearch-cdm-1gon-2-5769cf replicaset.extensions/elasticsearch-cdm-1gon-3-f66f7d
oc describe replicaSet elasticsearch-cdm-1gon-1-6f8495
. Containers: elasticsearch: Image: registry.redhat.io/openshift-logging/elasticsearch6-rhel8@sha256:4265742c7cdd85359140e2d7d703e4311b6497eec7676957f455d6908e7b1c25 Readiness: exec [/usr/share/elasticsearch/probe/readiness.sh] delay=10s timeout=30s period=5s #success=1 #failure=3 . Events: <none>
eo_elasticsearch_cr_cluster_management_state{state="managed"} 1 eo_elasticsearch_cr_cluster_management_state{state="unmanaged"} 0
eo_elasticsearch_cr_restart_total{reason="cert_restart"} 1 eo_elasticsearch_cr_restart_total{reason="rolling_restart"} 1 eo_elasticsearch_cr_restart_total{reason="scheduled_restart"} 3
Total number of Namespaces. es_index_namespaces_total 5
es_index_document_count{namespace="namespace_1"} 25 es_index_document_count{namespace="namespace_2"} 10 es_index_document_count{namespace="namespace_3"} 5
message": "Secret \"elasticsearch\" fields are either missing or empty: [admin-cert, admin-key, logging-es.crt, logging-es.key]", "reason": "Missing Required Secrets",