Fix permission for mounted directory

[absoludity]

Work-around for #2260 until the underlying problem is addressed (kubernetes/kubernetes#2630 - though not 100%).

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This change is 

[foxish]

@absoludity, thanks for the fix. I would rather it be a separate statement explaining why it may be necessary to chmod permissions when using hostPath volumes.

[absoludity]

@foxish Let me know if that's more what you're after. Thanks

[foxish]

@enisoc @kow3ns PTAL

[enisoc]

You shouldn't need a shell to run chmod. It should work as just:

for i in 0 1; do kubectl exec web-$i -- chmod 755 /usr/share/nginx/html; done

Did you find that the permissions on index.html are fine?

[absoludity]

Thanks @enisoc , I removed the sh as suggested.

Yes, the perms on index.html are fine:

michael@hpmor2:~/dev/k8s/statefulsets$ for i in 0 1; do kubectl exec web-$i -- ls -la /usr/share/nginx/html/; done
total 8
drwxr-xr-x 2 root root   60 Jan 25 09:23 .
drwxr-xr-x 4 root root 4096 Jan 16 06:20 ..
-rw-r--r-- 1 root root    6 Jan 25 09:23 index.html
total 8
drwxr-xr-x 2 root root   60 Jan 25 09:23 .
drwxr-xr-x 4 root root 4096 Jan 16 06:20 ..
-rw-r--r-- 1 root root    6 Jan 25 09:23 index.html

[enisoc]

/lgtm

[k8s-ci-robot]

@enisoc: you can't LGTM a PR unless you are an assignee.

In response to this comment:

/lgtm

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[enisoc]

/lgtm

[kow3ns]

/lgtm

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