Chapter 20. Replacing Controller nodes In certain circumstances a Controller node in a high availability cluster might fail. In these situations, you must remove the node from the cluster and replace it with a new Controller node. Complete the steps in this section to replace a Controller node. The Controller node replacement process involves running the openstack overcloud deploy command to update the overcloud with a request to replace a Controller node. Important The following procedure applies only to high availability environments. Do not use this procedure if you are using only one Controller node. 20.1. Preparing for Controller replacement Before you replace an overcloud Controller node, it is important to check the current state of your Red Hat OpenStack Platform environment. Checking the current state can help avoid complications during the Controller replacement process. Use the following list of preliminary checks to determine if it is safe to perform a Controller node replacement. Run all commands for these checks on the undercloud. Procedure Check the current status of the overcloud stack on the undercloud: Only continue if the overcloud stack has a deployment status of DEPLOY_SUCCESS . Install the database client tools: Configure root user access to the database: Perform a backup of the undercloud databases: Check that your undercloud contains 10 GB free storage to accommodate for image caching and conversion when you provision the new node: If you are reusing the IP address for the new controller node, ensure that you delete the port used by the old controller: Check the status of Pacemaker on the running Controller nodes. For example, if 192.168.0.47 is the IP address of a running Controller node, use the following command to view the Pacemaker status: The output shows all services that are running on the existing nodes and those that are stopped on the failed node. Check the following parameters on each node of the overcloud MariaDB cluster: wsrep_local_state_comment: Synced wsrep_cluster_size: 2 Use the following command to check these parameters on each running Controller node. In this example, the Controller node IP addresses are 192.168.0.47 and 192.168.0.46: Check the RabbitMQ status. For example, if 192.168.0.47 is the IP address of a running Controller node, use the following command to view the RabbitMQ status: The running_nodes key should show only the two available nodes and not the failed node. If fencing is enabled, disable it. For example, if 192.168.0.47 is the IP address of a running Controller node, use the following command to check the status of fencing: Run the following command to disable fencing: Login to the failed Controller node and stop all the nova_* containers that are running: Optional: If you are using the Bare Metal Service (ironic) as the virt driver, you must manually update the service entries in your cell database for any bare metal instances whose instances.host is set to the controller that you are removing. Contact Red Hat Support for assistance. Note This manual update of the cell database when using Bare Metal Service (ironic) as the virt driver is a temporary workaround to ensure the nodes are rebalanced, until BZ2017980 is complete. 20.2. Removing a Ceph Monitor daemon If your Controller node is running a Ceph monitor service, complete the following steps to remove the ceph-mon daemon. Note Adding a new Controller node to the cluster also adds a new Ceph monitor daemon automatically. Procedure Connect to the Controller node that you want to replace: List the Ceph mon services: Stop the Ceph mon service: Disable the Ceph mon service: Disconnect from the Controller node that you want to replace. Use SSH to connect to another Controller node in the same cluster: The Ceph specification file is modified and applied later in this procedure, to manipulate the file you must export it: Remove the monitor from the cluster: Disconnect from the Controller node and log back into the Controller node you are removing from the cluster: List the Ceph mgr services: Stop the Ceph mgr service: Disable the Ceph mgr service: Start a cephadm shell: Verify that the Ceph mgr service for the Controller node is removed from the cluster: The node is not listed if the Ceph mgr service is successfully removed. Export the Red Hat Ceph Storage specification: In the spec.yaml specification file, remove all instances of the host, for example controller-0 , from the service_type: mon and service_type: mgr . Reapply the Red Hat Ceph Storage specification: Verify that no Ceph daemons remain on the removed host: Note If daemons are present, use the following command to remove them: Prior to running the ceph orch host drain command, backup the contents of /etc/ceph . Restore the contents after running the ceph orch host drain command. You must back up prior to running the ceph orch host drain command until https://bugzilla.redhat.com/show_bug.cgi?id=2153827 is resolved. Remove the controller-0 host from the Red Hat Ceph Storage cluster: Exit the cephadm shell: Additional Resources For more information on controlling Red Hat Ceph Storage services with systemd, see Understanding process management for Ceph For more information on editing and applying Red Hat Ceph Storage specification files, see Deploying the Ceph monitor daemons using the service specification 20.3. Preparing the cluster for Controller node replacement Before you replace the node, ensure that Pacemaker is not running on the node and then remove that node from the Pacemaker cluster. Procedure To view the list of IP addresses for the Controller nodes, run the following command: Log in to the node and confirm the pacemaker status. If pacemaker is running, use the pcs cluster command to stop pacemaker. This example stops pacemaker on overcloud-controller-0 : Note In the case that the node is physically unavailable or stopped, it is not necessary to perform the operation, as pacemaker is already stopped on that node. After you stop Pacemaker on the node, delete the node from the pacemaker cluster. The following example logs in to overcloud-controller-1 to remove overcloud-controller-0 : If the node that that you want to replace is unreachable (for example, due to a hardware failure), run the pcs command with additional --skip-offline and --force options to forcibly remove the node from the cluster: After you remove the node from the pacemaker cluster, remove the node from the list of known hosts in pacemaker: You can run this command whether the node is reachable or not. To ensure that the new Controller node uses the correct STONITH fencing device after replacement, delete the devices from the node by entering the following command: Replace <stonith_resource_name> with the name of the STONITH resource that corresponds to the node. The resource name uses the the format <resource_agent>-<host_mac> . You can find the resource agent and the host MAC address in the FencingConfig section of the fencing.yaml file. The overcloud database must continue to run during the replacement procedure. To ensure that Pacemaker does not stop Galera during this procedure, select a running Controller node and run the following command on the undercloud with the IP address of the Controller node: Remove the OVN northbound database server for the replaced Controller node from the cluster: Obtain the server ID of the OVN northbound database server to be replaced: Replace <controller_ip> with the IP address of any active Controller node. You should see output similar to the following: In this example, 172.17.1.55 is the internal IP address of the Controller node that is being replaced, so the northbound database server ID is 96da . Using the server ID you obtained in the preceding step, remove the OVN northbound database server by running the following command: In this example, you would replace 172.17.1.52 with the IP address of any active Controller node, and replace 96da with the server ID of the OVN northbound database server. Remove the OVN southbound database server for the replaced Controller node from the cluster: Obtain the server ID of the OVN southbound database server to be replaced: Replace <controller_ip> with the IP address of any active Controller node. You should see output similar to the following: In this example, 172.17.1.55 is the internal IP address of the Controller node that is being replaced, so the southbound database server ID is e544 . Using the server ID you obtained in the preceding step, remove the OVN southbound database server by running the following command: In this example, you would replace 172.17.1.52 with the IP address of any active Controller node, and replace e544 with the server ID of the OVN southbound database server. Run the following clean up commands to prevent cluster rejoins. Substitute <replaced_controller_ip> with the IP address of the Controller node that you are replacing: 20.4. Replacing a bootstrap Controller node If you want to replace the Controller node that you use for bootstrap operations and keep the node name, complete the following steps to set the name of the bootstrap Controller node after the replacement process. Important Currently, when a bootstrap Controller node is replaced, the OVN database cluster is partitioned with two database clusters for both the northbound and southbound databases. This situation makes instances unusable. To find the name of the bootstrap Controller node, run the following command: Workaround: Do not reuse the original bootstrap node hostname and IP address for the new Controller node. RHOSP director sorts the hostnames and then selects the first hostname in the list as the bootstrap node. Choose a name for the new Controller node so that it does not become the first hostname after sorting. You can track the progress of the fix for this known issue in BZ 2222543 . Procedure Find the name of the bootstrap Controller node by running the following command: Replace <controller_ip> with the IP address of any active Controller node. Check if your environment files include the ExtraConfig section. If the ExtraConfig parameter does not exist, create the following environment file ~/templates/bootstrap-controller.yaml and add the following content: Replace NODE_NAME with the name of an existing Controller node that you want to use in bootstrap operations after the replacement process. If your environment files already include the ExtraConfig parameter, add only the lines that set the pacemaker_short_bootstrap_node_name and mysql_short_bootstrap_node_name parameters. For information about troubleshooting the bootstrap Controller node replacement, see the article Replacement of the first Controller node fails at step 1 if the same hostname is used for a new node . 20.5. Unprovision and remove Controller nodes To unprovision and remove Controller nodes, complete the following steps. Procedure Source the stackrc file: Identify the UUID of the overcloud-controller-0 node: Set the node to maintenance mode: Copy the overcloud-baremetal-deploy.yaml file: In the unprovision_controller-0.yaml file, lower the Controller count to unprovision the Controller node that you are replacing. In this example, the count is reduced from 3 to 2 . Move the controller-0 node to the instances dictionary and set the provisioned parameter to false : Run the node unprovision command: Optional Delete the ironic node: Replace IRONIC_NODE_UUID with the UUID of the node. 20.6. Deploying a new controller node to the overcloud To deploy a new controller node to the overcloud complete the following steps. Prerequisites The new Controller node must be registered, inspected, and tagged ready for provisioning. For more information, see Provisioning bare metal overcloud nodes Procedure Log into director and source the stackrc credentials file: Provision the overcloud with the original overcloud-baremetal-deploy.yaml environment file: Note If you want to use the same scheduling, placement, or IP addresses you can edit the overcloud-baremetal-deploy.yaml environment file. Set the hostname, name, and networks for the new controller-0 instance in the instances section. For example: When the node is provisioned, remove the instances section from the overcloud-baremetal-deploy.yaml file. To create the cephadm user on the new Controller node, export a basic Ceph specification containing the new host information: Note If your environment uses a custom role, include the --roles-data option. Add the cephadm user to the new Controller node: Add the new role to the Ceph cluster: Replace <IP_ADDRESS> with the IP address of the Controller node. Replace <LABELS> with any required Ceph labels. Re-run the openstack overcloud deploy command: Note If the replacement Controller node is the bootstrap node, include the bootstrap_node.yaml environment file. 20.7. Deploying Ceph services on the new controller node After you provision a new Controller node and the Ceph monitor services are running you can deploy the mgr , rgw and osd Ceph services on the Controller node. Prerequisites The new Controller node is provisioned and is running Ceph monitor services. Procedure Modify the spec.yml environment file, replace the Controller node name with the new Controller node name: Note Do not use the basic Ceph environment file ceph_spec_host.yaml as it does not contain all necessary cluster information. Apply the modified Ceph specification file: Verify the visibility of the new monitor: . 20.8. Cleaning up after Controller node replacement After you complete the node replacement, you can finalize the Controller cluster. Procedure Log into a Controller node. Enable Pacemaker management of the Galera cluster and start Galera on the new node: Enable fencing: Perform a final status check to ensure that the services are running correctly: Note If any services have failed, use the pcs resource refresh command to resolve and restart the failed services. Exit to director: Source the overcloudrc file so that you can interact with the overcloud: Check the network agents in your overcloud environment: If any agents appear for the old node, remove them: If necessary, add your router to the L3 agent host on the new node. Use the following example command to add a router named r1 to the L3 agent using the UUID 2d1c1dc1-d9d4-4fa9-b2c8-f29cd1a649d4: Clean the cinder services. List the cinder services: Log in to a controller node, connect to the cinder-api container and use the cinder-manage service remove command to remove leftover services: Clean the RabbitMQ cluster. Log into a Controller node. Use the podman exec command to launch bash, and verify the status of the RabbitMQ cluster: Use the rabbitmqctl command to forget the replaced controller node: If you replaced a bootstrap Controller node, you must remove the environment file ~/templates/bootstrap-controller.yaml after the replacement process, or delete the pacemaker_short_bootstrap_node_name and mysql_short_bootstrap_node_name parameters from your existing environment file. This step prevents director from attempting to override the Controller node name in subsequent replacements. For more information, see Replacing a bootstrap Controller node . If you are using the Object Storage service (swift) on the overcloud, you must synchronize the swift rings after updating the overcloud nodes. Use a script, similar to the following example, to distribute ring files from a previously existing Controller node (Controller node 0 in this example) to all Controller nodes and restart the Object Storage service containers on those nodes: Fetch the current set of ring files: Upload rings to all nodes, put them into the correct place, and restart swift services:

Commands:
source stackrc openstack overcloud status
sudo dnf -y install mariadb
sudo cp /var/lib/config-data/puppet-generated/mysql/root/.my.cnf /root/.
mkdir /home/stack/backup sudo mysqldump --all-databases --quick --single-transaction | gzip > /home/stack/backup/dump_db_undercloud.sql.gz
df -h
openstack port delete <port>
ssh tripleo-admin@192.168.0.47 'sudo pcs status'
for i in 192.168.0.46 192.168.0.47 ; do echo "*** USDi ***" ; ssh tripleo-admin@USDi "sudo podman exec \USD(sudo podman ps --filter name=galera-bundle -q) mysql -e \"SHOW STATUS LIKE 'wsrep_local_state_comment'; SHOW STATUS LIKE 'wsrep_cluster_size';\""; done
ssh tripleo-admin@192.168.0.47 "sudo podman exec \USD(sudo podman ps -f name=rabbitmq-bundle -q) rabbitmqctl cluster_status"
ssh tripleo-admin@192.168.0.47 "sudo pcs property show stonith-enabled"
ssh tripleo-admin@192.168.0.47 "sudo pcs property set stonith-enabled=false"
sudo systemctl stop tripleo_nova_api.service sudo systemctl stop tripleo_nova_api_cron.service sudo systemctl stop tripleo_nova_compute.service sudo systemctl stop tripleo_nova_conductor.service sudo systemctl stop tripleo_nova_metadata.service sudo systemctl stop tripleo_nova_placement.service sudo systemctl stop tripleo_nova_scheduler.service
ssh tripleo-admin@192.168.0.47
sudo systemctl --type=service | grep ceph ceph-4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31@crash.controller-0.service loaded active running Ceph crash.controller-0 for 4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31 ceph-4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31@mgr.controller-0.mufglq.service loaded active running Ceph mgr.controller-0.mufglq for 4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31 ceph-4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31@mon.controller-0.service loaded active running Ceph mon.controller-0 for 4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31 ceph-4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31@rgw.rgw.controller-0.ikaevh.service loaded active running Ceph rgw.rgw.controller-0.ikaevh for 4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31
sudo systemtctl stop ceph-4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31@mon.controller-0.service
sudo systemctl disable ceph-4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31@mon.controller-0.service
ssh tripleo-admin@192.168.0.46
sudo cephadm shell --ceph orch ls --export > spec.yaml
sudo cephadm shell -- ceph mon remove controller-0 removing mon.controller-0 at [v2:172.23.3.153:3300/0,v1:172.23.3.153:6789/0], there will be 2 monitors
ssh tripleo-admin@192.168.0.47
sudo systemctl --type=service | grep ceph ceph-4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31@crash.controller-0.service loaded active running Ceph crash.controller-0 for 4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31 ceph-4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31@mgr.controller-0.mufglq.service loaded active running Ceph mgr.controller-0.mufglq for 4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31 ceph-4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31@rgw.rgw.controller-0.ikaevh.service loaded active running Ceph rgw.rgw.controller-0.ikaevh for 4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31
sudo systemctl stop ceph-4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31@mgr.controller-0.mufglq.service
sudo systemctl disable ceph-4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31@mgr.controller-0.mufglq.service
sudo cephadm shell
ceph -s cluster: id: b9b53581-d590-41ac-8463-2f50aa985001 health: HEALTH_OK services: mon: 2 daemons, quorum controller-2,controller-1 (age 2h) mgr: controller-2(active, since 20h), standbys: controller1-1 osd: 15 osds: 15 up (since 3h), 15 in (since 3h) data: pools: 3 pools, 384 pgs objects: 32 objects, 88 MiB usage: 16 GiB used, 734 GiB / 750 GiB avail pgs: 384 active+clean
ceph orch ls --export > spec.yaml
ceph orch apply -i spec.yaml
ceph orch ps controller-0
ceph orch host drain controller-0
ceph orch host rm controller-0 Removed host 'controller-0'
exit
(undercloud)USD metalsmith -c Hostname -c "IP Addresses" list +------------------------+-----------------------+ | Hostname | IP Addresses | +------------------------+-----------------------+ | overcloud-compute-0 | ctlplane=192.168.0.44 | | overcloud-controller-0 | ctlplane=192.168.0.47 | | overcloud-controller-1 | ctlplane=192.168.0.45 | | overcloud-controller-2 | ctlplane=192.168.0.46 | +------------------------+-----------------------+
(undercloud) USD ssh tripleo-admin@192.168.0.45 "sudo pcs status | grep -w Online | grep -w overcloud-controller-0" (undercloud) USD ssh tripleo-admin@192.168.0.45 "sudo pcs cluster stop overcloud-controller-0"
(undercloud) USD ssh tripleo-admin@192.168.0.45 "sudo pcs cluster node remove overcloud-controller-0"
(undercloud) USD ssh tripleo-admin@192.168.0.45 "sudo pcs cluster node remove overcloud-controller-0 --skip-offline --force"
(undercloud) USD ssh tripleo-admin@192.168.0.45 "sudo pcs host deauth overcloud-controller-0"
(undercloud) USD ssh tripleo-admin@192.168.0.45 "sudo pcs stonith delete <stonith_resource_name>"
(undercloud) USD ssh tripleo-admin@192.168.0.45 "sudo pcs resource unmanage galera-bundle"
ssh tripleo-admin@<controller_ip> sudo podman exec ovn_cluster_north_db_server ovs-appctl -t /var/run/ovn/ovnnb_db.ctl cluster/status OVN_Northbound 2>/dev/null|grep -A4 Servers:
Servers: 96da (96da at tcp:172.17.1.55:6643) (self) next_index=26063 match_index=26063 466b (466b at tcp:172.17.1.51:6643) next_index=26064 match_index=26063 last msg 2936 ms ago ba77 (ba77 at tcp:172.17.1.52:6643) next_index=26064 match_index=26063 last msg 2936 ms ago
ssh tripleo-admin@172.17.1.52 sudo podman exec ovn_cluster_north_db_server ovs-appctl -t /var/run/ovn/ovnnb_db.ctl cluster/kick OVN_Northbound 96da
ssh tripleo-admin@<controller_ip> sudo podman exec ovn_cluster_north_db_server ovs-appctl -t /var/run/ovn/ovnnb_db.ctl cluster/status OVN_Southbound 2>/dev/null|grep -A4 Servers:
Servers: e544 (e544 at tcp:172.17.1.55:6644) last msg 42802690 ms ago 17ca (17ca at tcp:172.17.1.51:6644) last msg 5281 ms ago 6e52 (6e52 at tcp:172.17.1.52:6644) (self)
ssh tripleo-admin@172.17.1.52 sudo podman exec ovn_cluster_south_db_server ovs-appctl -t /var/run/ovn/ovnsb_db.ctl cluster/kick OVN_Southbound e544
ssh tripleo-admin@<replaced_controller_ip> sudo systemctl disable --now tripleo_ovn_cluster_south_db_server.service tripleo_ovn_cluster_north_db_server.service ssh tripleo-admin@<replaced_controller_ip> sudo rm -rfv /var/lib/openvswitch/ovn/.ovn* /var/lib/openvswitch/ovn/ovn*.db
ssh tripleo-admin@<controller_ip> "sudo hiera -c /etc/puppet/hiera.yaml ovn_dbs_short_bootstrap_node_name"
ssh tripleo-admin@<controller_ip> "sudo hiera -c /etc/puppet/hiera.yaml pacemaker_short_bootstrap_node_name"
parameter_defaults: ExtraConfig: pacemaker_short_bootstrap_node_name: NODE_NAME mysql_short_bootstrap_node_name: NODE_NAME
source ~/stackrc
(undercloud)USD NODE=USD(metalsmith -c UUID -f value show overcloud-controller-0)
openstack baremetal node maintenance set USDNODE
cp /home/stack/templates/overcloud-baremetal-deploy.yaml /home/stack/templates/unprovision_controller-0.yaml
- name: Controller count: 2 hostname_format: controller-%index% defaults: resource_class: BAREMETAL.controller networks: [ ... ] instances: - hostname: controller-0 name: <IRONIC_NODE_UUID_or_NAME> provisioned: false - name: Compute count: 2 hostname_format: compute-%index% defaults: resource_class: BAREMETAL.compute networks: [ ... ]
openstack overcloud node delete --stack overcloud --baremetal-deployment /home/stack/templates/unprovision_controller-0.yaml
The following nodes will be unprovisioned: +--------------+-------------------------+--------------------------------------+ | hostname | name | id | +--------------+-------------------------+--------------------------------------+ | controller-0 | baremetal-35400-leaf1-2 | b0d5abf7-df28-4ae7-b5da-9491e84c21ac | +--------------+-------------------------+--------------------------------------+ Are you sure you want to unprovision these overcloud nodes and ports [y/N]?
openstack baremetal node delete <IRONIC_NODE_UUID>
source ~/stackrc
openstack overcloud node provision --stack overcloud --network-config --output /home/stack/templates/overcloud-baremetal-deployed.yaml /home/stack/templates/overcloud-baremetal-deploy.yaml
- name: Controller count: 3 hostname_format: controller-%index% defaults: resource_class: BAREMETAL.controller networks: - network: external subnet: external_subnet - network: internal_api subnet: internal_api_subnet01 - network: storage subnet: storage_subnet01 - network: storage_mgmt subnet: storage_mgmt_subnet01 - network: tenant subnet: tenant_subnet01 network_config: template: templates/multiple_nics/multiple_nics_dvr.j2 default_route_network: - external instances: - hostname: controller-0 name: baremetal-35400-leaf1-2 networks: - network: external subnet: external_subnet fixed_ip: 10.0.0.224 - network: internal_api subnet: internal_api_subnet01 fixed_ip: 172.17.0.97 - network: storage subnet: storage_subnet01 fixed_ip: 172.18.0.24 - network: storage_mgmt subnet: storage_mgmt_subnet01 fixed_ip: 172.19.0.129 - network: tenant subnet: tenant_subnet01 fixed_ip: 172.16.0.11 - name: Compute count: 2 hostname_format: compute-%index% defaults: [ ... ]
openstack overcloud ceph spec --stack overcloud /home/stack/templates/overcloud-baremetal-deployed.yaml -o ceph_spec_host.yaml
openstack overcloud ceph user enable --stack overcloud ceph_spec_host.yaml
sudo cephadm shell -- ceph orch test add controlller-3 <IP_ADDRESS> <LABELS> 192.168.24.31 _admin mon mgr Inferring fsid 4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31 Using recent ceph image undercloud-0.ctlplane.redhat.local:8787/rh-osbs/rhceph@sha256:3075e8708792ebd527ca14849b6af4a11256a3f881ab09b837d7af0f8b2102ea Added host 'controller-3' with addr '192.168.24.31'
openstack overcloud deploy --stack overcloud --templates -n /home/stack/templates/network_data.yaml -r /home/stack/templates/roles_data.yaml -e /home/stack/templates/overcloud-baremetal-deployed.yaml -e /home/stack/templates/overcloud-networks-deployed.yaml -e /home/stack/templates/overcloud-vips-deployed.yaml -e /home/stack/templates/bootstrap_node.yaml -e [ ... ]
cephadm shell -- ceph orch ls --export > spec.yml
cat spec.yml | sudo cephadm shell -- ceph orch apply -i - Inferring fsid 4cf401f9-dd4c-5cda-9f0a-fa47fbf12b31 Using recent ceph image undercloud-0.ctlplane.redhat.local:8787/rh-osbs/rhceph@sha256:3075e8708792ebd527ca14849b6af4a11256a3f881ab09b837d7af0f8b2102ea Scheduled crash update Scheduled mgr update Scheduled mon update Scheduled osd.default_drive_group update Scheduled rgw.rgw update
sudo cephadm --ceph status
[tripleo-admin@overcloud-controller-0 ~]USD sudo pcs resource refresh galera-bundle [tripleo-admin@overcloud-controller-0 ~]USD sudo pcs resource manage galera-bundle
[tripleo-admin@overcloud-controller-0 ~]USD sudo pcs property set stonith-enabled=true
[tripleo-admin@overcloud-controller-0 ~]USD sudo pcs status
[tripleo-admin@overcloud-controller-0 ~]USD exit
source ~/overcloudrc
(overcloud) USD openstack network agent list
(overcloud) USD for AGENT in USD(openstack network agent list --host overcloud-controller-1.localdomain -c ID -f value) ; do openstack network agent delete USDAGENT ; done
(overcloud) USD openstack network agent add router --l3 2d1c1dc1-d9d4-4fa9-b2c8-f29cd1a649d4 r1
(overcloud) USD openstack volume service list
[tripleo-admin@overcloud-controller-0 ~]USD sudo podman exec -it cinder_api cinder-manage service remove cinder-backup <host> [tripleo-admin@overcloud-controller-0 ~]USD sudo podman exec -it cinder_api cinder-manage service remove cinder-scheduler <host>
[tripleo-admin@overcloud-controller-0 ~]USD podman exec -it rabbitmq-bundle-podman-0 bash [tripleo-admin@overcloud-controller-0 ~]USD rabbitmqctl cluster_status
[tripleo-admin@overcloud-controller-0 ~]USD rabbitmqctl forget_cluster_node <node_name>
#!/bin/sh set -xe SRC="tripleo-admin@overcloud-controller-0.ctlplane" ALL="tripleo-admin@overcloud-controller-0.ctlplane tripleo-admin@overcloud-controller-1.ctlplane tripleo-admin@overcloud-controller-2.ctlplane"
ssh "USD{SRC}" 'sudo tar -czvf - /var/lib/config-data/puppet-generated/swift_ringbuilder/etc/swift/{*.builder,*.ring.gz,backups/*.builder}' > swift-rings.tar.gz
for DST in USD{ALL}; do cat swift-rings.tar.gz | ssh "USD{DST}" 'sudo tar -C / -xvzf -' ssh "USD{DST}" 'sudo podman restart swift_copy_rings' ssh "USD{DST}" 'sudo systemctl restart tripleo_swift*' done