[stable/memcached] Add extraArgs to values (#13080)

* [stable/memcached] add extraArgs to values

Signed-off-by: Aitor Ruano <aruano@pm.me>

* fix version

Signed-off-by: Aitor Ruano <aruano@pm.me>

* replace range by with flow statement

Signed-off-by: Aitor Ruano <aruano@pm.me>

stable/memcached/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: memcached
-version: 2.7.2
+version: 2.8.2
 appVersion: 1.5.12
 description: Free & open source, high-performance, distributed memory object caching
   system.

stable/memcached/README.md

@@ -46,6 +46,7 @@ The following table lists the configurable parameters of the Memcached chart and
 | `imagePullPolicy`         | Image pull policy               | `Always` if `imageTag` is `latest`, else `IfNotPresent` |
 | `memcached.verbosity`     | Verbosity level (v, vv, or vvv) | Un-set.                                                 |
 | `memcached.maxItemMemory` | Max memory for items (in MB)    | `64`                                                    |
+| `memcached.extraArgs`     | Additional memcached arguments  | `[]`                                                    |
 | `metrics.enabled`         | Expose metrics in prometheus format | false                                               |
 | `metrics.image`           | The image to pull and run for the metrics exporter | A recent official memcached tag      |
 | `metrics.imagePullPolicy` | Image pull policy               | `Always` if `imageTag` is `latest`, else `IfNotPresent` |

stable/memcached/templates/statefulset.yaml

@@ -50,7 +50,7 @@ spec:
         imagePullPolicy: {{ default "" .Values.imagePullPolicy | quote }}
         command:
         - memcached
-        - -m {{ .Values.memcached.maxItemMemory  }}
+        - -m {{ .Values.memcached.maxItemMemory }}
         {{- if .Values.memcached.extendedOptions }}
         - -o
         - {{ .Values.memcached.extendedOptions }}
@@ -58,6 +58,9 @@ spec:
         {{- if .Values.memcached.verbosity }}
         - -{{ .Values.memcached.verbosity }}
         {{- end }}
+{{- with .Values.memcached.extraArgs }}
+{{ toYaml . | indent 8 }}
+{{- end }}
         ports:
         - name: memcache
           containerPort: 11211
@@ -101,4 +104,4 @@ spec:
 {{- with .Values.affinity }}
       affinity:
 {{ toYaml . | trim | indent 8}}
-{{- end }}
+{{- end }}

stable/memcached/values.yaml

@@ -29,6 +29,12 @@ memcached:
   verbosity: v
   extendedOptions: modern
 
+  ## Additional command line arguments to pass to memcached
+  ## E.g. to specify a maximum value size
+  ## extraArgs:
+  ##   - -I 2m
+  extraArgs: []
+
 ## Define various attributes of the service
 serviceAnnotations: {}
 #  prometheus.io/scrape: "true"