Add ability to control prometheus TSDB locking (#11270)

* Add enableTSDBLock var

Signed-off-by: Artem Pastukhov <artem.pastukhov@gmail.com>

* Add --storage.tsdb.no-lockfile flag calculation

Signed-off-by: Artem Pastukhov <artem.pastukhov@gmail.com>

* Revert logic for locking flag

Signed-off-by: Artem Pastukhov <artem.pastukhov@gmail.com>

* Remove extra space

Signed-off-by: Artem Pastukhov <artem.pastukhov@gmail.com>

* Add --storage.tsdb.no-lockfile

Signed-off-by: Artem Pastukhov <artem.pastukhov@gmail.com>

* Bump chart version

Signed-off-by: Artem Pastukhov <artem.pastukhov@gmail.com>

* Update README.md

Signed-off-by: Artem Pastukhov <artem.pastukhov@gmail.com>

* Remove exrtra whitespace

Signed-off-by: Artem Pastukhov <artem.pastukhov@gmail.com>

* Bump chart version

Signed-off-by: Artem Pastukhov <artem.pastukhov@gmail.com>

stable/prometheus/Chart.yaml

@@ -1,5 +1,5 @@
 name: prometheus
-version: 8.7.1
+version: 8.8.0
 appVersion: 2.7.1
 description: Prometheus is a monitoring system and time series database.
 home: https://prometheus.io/

stable/prometheus/README.md

@@ -238,6 +238,7 @@ Parameter | Description | Default
 `server.image.tag` | Prometheus server container image tag | `v2.7.1`
 `server.image.pullPolicy` | Prometheus server container image pull policy | `IfNotPresent`
 `server.enableAdminApi` |  If true, Prometheus administrative HTTP API will be enabled. Please note, that you should take care of administrative API access protection (ingress or some frontend Nginx with auth) before enabling it. | `false`
+`server.skipTSDBLock` |  If true, Prometheus skip TSDB locking. | `false`
 `server.configPath` |  Path to a prometheus server config file on the container FS  | `/etc/config/prometheus.yml`
 `server.global.scrape_interval` | How frequently to scrape targets by default | `1m`
 `server.global.scrape_timeout` | How long until a scrape request times out | `10s`

stable/prometheus/templates/server-deployment.yaml

@@ -103,6 +103,9 @@ spec:
           {{- if .Values.server.enableAdminApi }}
             - --web.enable-admin-api
           {{- end }}
+          {{- if .Values.server.skipTSDBLock }}
+            - --storage.tsdb.no-lockfile
+          {{- end }}
           ports:
             - containerPort: 9090
           readinessProbe:

stable/prometheus/templates/server-statefulset.yaml

@@ -96,6 +96,9 @@ spec:
           {{- if .Values.server.enableAdminApi }}
             - --web.enable-admin-api
           {{- end }}
+          {{- if .Values.server.skipTSDBLock }}
+            - --storage.tsdb.no-lockfile
+          {{- end }}
           ports:
             - containerPort: 9090
           readinessProbe:

stable/prometheus/values.yaml

@@ -555,6 +555,9 @@ server:
   ## series. This is disabled by default.
   enableAdminApi: false
 
+  ## This flag controls BD locking
+  skipTSDBLock: false
+
   ## Path to a configuration file on prometheus server container FS
   configPath: /etc/config/prometheus.yml