Grafana dashboard: Memcached Server Metrics
Description: Memcached Server Metrics, requires CollectD memcached plugin and Graphite

Metrics Dashboard for Memcached server. 

## Features 

* Server template variable (so if you have multiple memcached server you can pick which one you want at the top of the dashboard)
* Hit Ratio, Commands, Get / Set Ratio
* Connections, DF Cache Bytes (free/used), Items In Cache
* Ops - Evictions, Ops - Misses, Ops - Hits,. 
* Traffic Octets In/out, Process Threads, CPU Time

CollectD config can be found here: [collectd.conf](
https://github.com/torkelo/dashboards/blob/master/collectd-graphite-memcached-single-server/collectd.conf)

The relevant parts for this dashboard is 
```
LoadPlugin memcached

<Plugin "memcached">
  Host "127.0.0.1"
  Port "11211"
</Plugin>
```

## Metric Prefix
When you import the dasbhoard you will have to specify your collectd metric prefix, this is by defauilt just `collectd`. The dashboard assumes the following metric structure `$prefix.$server.memcached...`.  So if you have a non standard collectd prefix like `prod.cacheservers` then specify that in the prefix field when you import the dashboard. During import when you specify the prefix do not include the last dot (`.`). 

## Make this dashboard better
For feedback and ideas to improve this dashboard please open an issue here: 
[https://github.com/torkelo/dashboards](https://github.com/torkelo/dashboards)

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            "threshold1Color": "rgba(216, 200, 27, 0.27)",
            "threshold2": null,
            "threshold2Color": "rgba(234, 112, 112, 0.22)"
          },
          "id": 11,
          "isNew": true,
          "legend": {
            "avg": false,
            "current": false,
            "max": false,
            "min": false,
            "show": true,
            "total": false,
            "values": false
          },
          "lines": true,
          "linewidth": 1,
          "links": [],
          "nullPointMode": "connected",
          "percentage": false,
          "pointradius": 5,
          "points": false,
          "renderer": "flot",
          "seriesOverrides": [
            {
              "alias": "Out",
              "transform": "negative-Y"
            }
          ],
          "span": 3.94724110878661,
          "stack": true,
          "steppedLine": false,
          "targets": [
            {
              "refId": "A",
              "target": "aliasByNode($prefix.$server.memcached.ps_cputime.*, 4)"
            }
          ],
          "timeFrom": null,
          "timeShift": null,
          "title": "CPU Time",
          "tooltip": {
            "msResolution": false,
            "shared": true,
            "sort": 0,
            "value_type": "cumulative"
          },
          "type": "graph",
          "xaxis": {
            "show": true
          },
          "yaxes": [
            {
              "format": "short",
              "label": null,
              "logBase": 1,
              "max": null,
              "min": 0,
              "show": true
            },
            {
              "format": "short",
              "label": null,
              "logBase": 1,
              "max": null,
              "min": null,
              "show": true
            }
          ]
        }
      ],
      "title": "New row"
    }
  ],
  "time": {
    "from": "now-2h",
    "to": "now"
  },
  "timepicker": {
    "refresh_intervals": [
      "5s",
      "10s",
      "30s",
      "1m",
      "5m",
      "15m",
      "30m",
      "1h",
      "2h",
      "1d"
    ],
    "time_options": [
      "5m",
      "15m",
      "1h",
      "6h",
      "12h",
      "24h",
      "2d",
      "7d",
      "30d"
    ]
  },
  "templating": {
    "list": [
      {
        "current": {
          "value": "${VAR_PREFIX}",
          "text": "${VAR_PREFIX}"
        },
        "datasource": null,
        "hide": 2,
        "includeAll": false,
        "multi": false,
        "name": "prefix",
        "options": [
          {
            "value": "${VAR_PREFIX}",
            "text": "${VAR_PREFIX}"
          }
        ],
        "query": "${VAR_PREFIX}",
        "refresh": 0,
        "type": "constant"
      },
      {
        "current": {},
        "datasource": "${DS_GRAPHITE}",
        "hide": 0,
        "includeAll": false,
        "multi": false,
        "name": "server",
        "options": [],
        "query": "$prefix.*",
        "refresh": 1,
        "type": "query"
      }
    ]
  },
  "annotations": {
    "list": []
  },
  "refresh": false,
  "schemaVersion": 12,
  "version": 28,
  "links": [],
  "gnetId": 30,
  "description": "Memcached Server Metrics, requires CollectD memcached plugin and Graphite"
}