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AWS: Add comments to explain the symlink logic

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This commit is contained in:
Justin Santa Barbara 2016-02-17 09:57:37 -05:00
parent 69300c51b3
commit c68c019150
1 changed files with 5 additions and 0 deletions
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5
cluster/aws/templates/format-disks.sh
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@ -189,10 +189,13 @@ fi
if [[ -n "${move_docker}" ]]; then
# Move docker to e.g. /mnt
# but only if it is a directory, not a symlink left over from a previous run
if [[ -d /var/lib/docker ]]; then
mv /var/lib/docker ${move_docker}/
fi
mkdir -p ${move_docker}/docker
# If /var/lib/docker doesn't exist (it will exist if it is already a symlink),
# then symlink it to the ephemeral docker area
if [[ ! -e /var/lib/docker ]]; then
ln -s ${move_docker}/docker /var/lib/docker
fi
@ -203,10 +206,12 @@ fi
if [[ -n "${move_kubelet}" ]]; then
# Move /var/lib/kubelet to e.g. /mnt
# (the backing for empty-dir volumes can use a lot of space!)
# (As with /var/lib/docker, only if it is a directory; skip if symlink)
if [[ -d /var/lib/kubelet ]]; then
mv /var/lib/kubelet ${move_kubelet}/
fi
mkdir -p ${move_kubelet}/kubelet
# Create symlink for /var/lib/kubelet, unless it is already a symlink
if [[ ! -e /var/lib/kubelet ]]; then
ln -s ${move_kubelet}/kubelet /var/lib/kubelet
fi