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Merge pull request #42376 from jingxu97/Feb/mounter

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Automatic merge from submit-queue (batch tested with PRs 43558, 48261, 42376, 46803, 47058)

Add bind mount /etc/resolv.conf from host to containerized mounter

Currently, in containerized mounter rootfs, there is no DNS setup. If client
try to set up volume with host name instead of IP address, it will fail to resolve
the host name. 
By bind mount the host's /etc/resolv.conf to mounter rootfs, VM hosts name
could be resolved when using host name during mount. 

```release-note
Fixes issue where you could not mount NFS or glusterFS volumes using hostnames on GCI/GKE with COS images.
```
This commit is contained in:
Kubernetes Submit Queue 2017-06-30 16:28:46 -07:00 committed by GitHub
commit 87c6fb5de2
1 changed files with 1 additions and 0 deletions
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cluster/gce/gci/configure-helper.sh
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@ -1186,6 +1186,7 @@ function prepare-mounter-rootfs {
mount --make-rshared "${CONTAINERIZED_MOUNTER_ROOTFS}/var/lib/kubelet"
mount --bind -o ro /proc "${CONTAINERIZED_MOUNTER_ROOTFS}/proc"
mount --bind -o ro /dev "${CONTAINERIZED_MOUNTER_ROOTFS}/dev"
mount --bind -o ro /etc/resolv.conf "${CONTAINERIZED_MOUNTER_ROOTFS}/etc/resolv.conf"
}
# A helper function for removing salt configuration and comments from a file.