Issue 106: Updating README.md (#108)

* Issue 106:Updating README.md Signed-off-by: Aparna <[email protected]> * Issue 106:Updating README.md Signed-off-by: Aparna <[email protected]> * Update README Signed-off-by: Adrián Moreno <[email protected]> * Update README [ci skip] Signed-off-by: Adrián Moreno <[email protected]>
pravega · Feb 22, 2019 · 8dcf355 · 8dcf355
1 parent 3ab0f66
commit 8dcf355
Showing 1 changed file with 25 additions and 1 deletion.
diff --git a/README.md b/README.md
@@ -26,7 +26,7 @@ The project is currently alpha. While no breaking API changes are currently plan
 * [Releases](#releases)
 * [Troubleshooting](#troubleshooting)
     * [Helm Error: no available release name found](#helm-error-no-available-release-name-found)
-
+    * [NFS volume mount failure: wrong fs type](#nfs-volume-mount-failure-wrong-fs-type)
 ## Overview
 
 [Pravega](http://pravega.io) is an open source distributed storage service implementing Streams. It offers Stream as the main primitive for the foundation of reliable storage systems: *a high-performance, durable, elastic, and unlimited append-only byte stream with strict ordering and consistency*.
@@ -501,3 +501,27 @@ kubectl create clusterrolebinding tiller-cluster-rule --clusterrole=cluster-admi
 kubectl patch deploy --namespace kube-system tiller-deploy -p '{"spec":{"template":{"spec":{"serviceAccount":"tiller"}}}}'
 ```
 The above commands should resolve the errors and `helm install` should work correctly.
+
+### NFS volume mount failure: wrong fs type
+
+If you experience `wrong fs type` issues when pods are trying to mount NFS volumes like in the `kubectl describe po/pravega-segmentstore-0` snippet below, make sure that all Kubernetes node have the `nfs-common` system package installed. You can just try to run the `mount.nfs` command to make sure NFS support is installed in your system.
+
+In PKS, make sure to use [`v1.2.3`](https://docs.pivotal.io/runtimes/pks/1-2/release-notes.html#v1.2.3) or newer. Older versions of PKS won't have NFS support installed in Kubernetes nodes.
+
+```
+Events:
+  Type     Reason       Age                        From                                           Message
+  ----     ------       ----                       ----                                           -------
+  Warning  FailedMount  10m (x222 over 10h)        kubelet, 53931b0d-18f4-49fd-a105-49b1fea3f468  Unable to mount volumes for pod "nautilus-segmentstore-0_nautilus-pravega(79167f33-f73b-11e8-936a-005056aeca39)": timeout expired waiting for volumes to attach or mount for pod "nautilus-pravega"/"nautilus-segmentstore-0". list of unmounted volumes=[tier2]. list of unattached volumes=[cache tier2 pravega-segment-store-token-fvxql]
+  Warning  FailedMount  <invalid> (x343 over 10h)  kubelet, 53931b0d-18f4-49fd-a105-49b1fea3f468  (combined from similar events): MountVolume.SetUp failed for volume "pvc-6fa77d63-f73b-11e8-936a-005056aeca39" : mount failed: exit status 32
+Mounting command: systemd-run
+Mounting arguments: --description=Kubernetes transient mount for   /var/lib/kubelet/pods/79167f33-f73b-11e8-936a-005056aeca39/volumes/kubernetes.io~nfs/pvc-6fa77d63-f73b-11e8-936a-005056aeca39 --scope -- mount -t nfs -o vers=4.1 10.100.200.247:/export/pvc-6fa77d63-f73b-11e8-936a-005056aeca39 /var/lib/kubelet/pods/79167f33-f73b-11e8-936a-005056aeca39/volumes/kubernetes.io~nfs/pvc-6fa77d63-f73b-11e8-936a-005056aeca39
+Output: Running scope as unit run-rc77b988cdec041f6aa91c8ddd8455587.scope.
+mount: wrong fs type, bad option, bad superblock on 10.100.200.247:/export/pvc-6fa77d63-f73b-11e8-936a-005056aeca39,
+       missing codepage or helper program, or other error
+       (for several filesystems (e.g. nfs, cifs) you might
+       need a /sbin/mount.<type> helper program)
+
+       In some cases useful info is found in syslog - try
+       dmesg | tail or so.
+```