Update prometheus chart (#3783)

Add additional values to the prometheus chart node-exporter values.
* Add volume mount/mapping to enable monitoring of host ZFS filesystems.
* Add host root mapping flag to correctly map mountpoints.
* Update mountpoint filter to exclude a noisy of container/ZFS volumes.

Signed-off-by: SuperQ <superq@gmail.com>

Signed-off-by: SuperQ <superq@gmail.com>

charts/stable/prometheus/Chart.yaml

@@ -29,7 +29,7 @@ sources:
   - https://github.com/prometheus-community/helm-charts
   - https://github.com/prometheus-operator/kube-prometheus
 type: application
-version: 4.0.82
+version: 4.0.83
 annotations:
   truecharts.org/catagories: |
     - metrics

charts/stable/prometheus/values.yaml

@@ -1150,8 +1150,17 @@ node-exporter:
     enabled: true
     jobLabel: jobLabel
   extraArgs:
-    collector.filesystem.ignored-mount-points: "^/(dev|proc|sys|var/lib/docker/.+)($|/)"
+    collector.filesystem.ignored-mount-points: "^/(dev|proc|sys|var/lib/docker/.+|var/lib/kubelet/.+|var/db/system/.+|mnt/[a-zA-Z0-9-_\\.]+/ix-applications/.+)($|/)"
     collector.filesystem.ignored-fs-types: "^(autofs|binfmt_misc|cgroup|configfs|debugfs|devpts|devtmpfs|fusectl|hugetlbfs|mqueue|overlay|proc|procfs|pstore|rpc_pipefs|securityfs|sysfs|tracefs)$"
+    path.rootfs: /host
+  extraVolumes:
+    - name: host
+      hostPath:
+        path: /
+  extraVolumeMounts:
+    - name: host
+      mountPath: /host
+      readOnly: true
 ## @param kube-state-metrics [object] Node Exporter deployment configuration
 ##
 kube-state-metrics: