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February 25, 2018 05:05
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Hack to mount /mnt/media-v1 into kubelet in rancher, docker-enter: docker run --rm -v /usr/local/bin:/target jpetazzo/nsenter
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#!/bin/sh | |
set -e | |
CONTAINER=r-kubernetes-kubelet-3-59fec1df | |
HOSTPATH=/mnt/media-v1 | |
CONTPATH=/mnt/media-v1 | |
REALPATH=$(readlink -f $HOSTPATH) | |
FILESYS=$(df -P $REALPATH | tail -n 1 | awk '{print $6}') | |
while read DEV MOUNT JUNK | |
do [ $MOUNT = $FILESYS ] && break | |
done </proc/mounts | |
[ $MOUNT = $FILESYS ] # Sanity check! | |
while read A B C SUBROOT MOUNT JUNK | |
do [ $MOUNT = $FILESYS ] && break | |
done < /proc/self/mountinfo | |
[ $MOUNT = $FILESYS ] # Moar sanity check! | |
SUBPATH=$(echo $REALPATH | sed s,^$FILESYS,,) | |
DEVDEC=$(printf "%d %d" $(stat --format "0x%t 0x%T" $DEV)) | |
docker-enter $CONTAINER -- sh -c \ | |
"[ -b $DEV ] || mknod --mode 0600 $DEV b $DEVDEC" | |
docker-enter $CONTAINER -- mkdir /tmpmnt | |
docker-enter $CONTAINER -- mount $DEV /tmpmnt | |
docker-enter $CONTAINER -- mkdir -p $CONTPATH | |
docker-enter $CONTAINER -- mount -o bind /tmpmnt/$SUBROOT/$SUBPATH $CONTPATH | |
docker-enter $CONTAINER -- umount /tmpmnt | |
docker-enter $CONTAINER -- rmdir /tmpmnt |
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