/
pd.sh
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/
pd.sh
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#!/bin/bash
#
# KuberDock - is a platform that allows users to run applications using Docker
# container images and create SaaS / PaaS based on these applications.
# Copyright (C) 2017 Cloud Linux INC
#
# This file is part of KuberDock.
#
# KuberDock is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# KuberDock is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with KuberDock; if not, see <http://www.gnu.org/licenses/>.
#
#TMS=$(date +"%Y-%m-%d %H:%M:%S")
#echo "$TMS $1 $2 $3 $4 $5 $6 $7" >> /tmp/pd.log
if [ $1 == umount ]; then
ACTION=$1
UUID=$2
else
UUID=$1
ACTION=$2
fi
DEVICE=$3 # device name like my-name__SEP__user
NAME=$4
SIZE=$5
AWS_ACCESS_KEY_ID=$6
AWS_SECRET_ACCESS_KEY=$7
IID=$(curl -s --connect-timeout 1 http://169.254.169.254/latest/meta-data/instance-id)
AV_ZONE=""
REGION=""
FREE_CHAR=""
if [ -n "$IID" ];then
AV_ZONE=$(curl -s connect-timeout 1 http://169.254.169.254/latest/meta-data/placement/availability-zone)
REGION=$(echo $AV_ZONE|sed 's/\([0-9][0-9]*\)[a-z]*$/\1/')
fi
MP="/var/lib/kubelet/pods/$UUID/volumes/kubernetes.io~scriptable-disk/$NAME"
if [ $USER != root ];then
echo "Superuser privileges required"
exit 0
fi
function mkdir_if_missing {
if [ ! -d "$MP" ];then
mkdir -p "$MP"
fi
}
function get_next {
ARRAY=($(ls -1 /dev/xvd*|awk -F '' '/xvd/ {print $9}'|sort))
NEXT=$(($(printf "%d" "'${ARRAY[-1]}")+1))
if [ "$NEXT" -gt 122 ];then
exit 1
fi
FREE_CHAR=$(awk "BEGIN{printf \"%c\", $NEXT}")
}
function remove_volume {
AWS_ACCESS_KEY_ID=$2
AWS_SECRET_ACCESS_KEY=$3
VOLNAME=$4
export AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY
aws ec2 delete-volume --volume-id=$VOLNAME --region=$REGION
unset AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY
}
function create_map_and_mount {
mkdir_if_missing
if [ -z "$IID" ];then # not aws
SIZE_MB=$((1024*$SIZE))
rbd create $DEVICE --size=$SIZE_MB
DEVICE=$(rbd map $DEVICE)
mkfs.ext4 $DEVICE
mount -o context="\"system_u:object_r:cgroup_t:s0\"" "$DEVICE" "$MP"
else # aws
get_next
if [ -z "$FREE_CHAR" ];then
exit 1
fi
NEXT_DEV="xvd$FREE_CHAR"
if [ -n "$AWS_ACCESS_KEY_ID" ] && [ -n "AWS_SECRET_ACCESS_KEY" ];then
export AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY
VOL=$(aws ec2 create-volume --size=$SIZE --region=$REGION --availability-zone=$AV_ZONE | jq -r '.VolumeId')
aws ec2 create-tags --resources=$VOL --region=$REGION --tags Key=Name,Value=$DEVICE
aws ec2 attach-volume --volume-id=$VOL --instance-id=$IID --device=$NEXT_DEV --region=$REGION
while [ $? -ne 0 ];do
sleep 1
aws ec2 attach-volume --volume-id=$VOL --instance-id=$IID --device=$NEXT_DEV --region=$REGION
done
mkfs.ext4 "/dev/$NEXT_DEV"
while [ $? -ne 0 ];do
sleep 2
mkfs.ext4 "/dev/$NEXT_DEV"
done
mount -o context="\"system_u:object_r:cgroup_t:s0\"" "/dev/$NEXT_DEV" "$MP"
unset AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY
fi
fi
}
function map_and_mount {
if [ -z "$IID" ];then
rbd showmapped|awk "NR>1{if(\$3==\"$DEVICE\"){exit 1}}"
if [ $? -ne 0 ];then
exit 1
fi
mkdir_if_missing
DEVICE=$(rbd map $DEVICE)
mount -o context="\"system_u:object_r:cgroup_t:s0\"" "$DEVICE" "$MP"
else
RV=$(aws ec2 describe-volumes --region=$REGION --filters "Name=tag-key,Values=Name" "Name=tag-value,Values=$DEVICE")
RES=$(echo $RV | jq -r ".Volumes[0].State")
if [ $RES != available ];then
exit 1
fi
mkdir_if_missing
get_next
if [ -z "$FREE_CHAR" ];then
exit 1
fi
NEXT_DEV="xvd$FREE_CHAR"
VOL=$(echo $RV | jq -r ".Volumes[0].VolumeId")
aws ec2 attach-volume --volume-id=$VOL --instance-id=$IID --device=$NEXT_DEV --region=$REGION
while [ $? -ne 0 ];do
sleep 1
aws ec2 attach-volume --volume-id=$VOL --instance-id=$IID --device=$NEXT_DEV --region=$REGION
done
mount -o context="\"system_u:object_r:cgroup_t:s0\"" "/dev/$NEXT_DEV" "$MP"
while [ $? -ne 0 ];do
sleep 1
mount -o context="\"system_u:object_r:cgroup_t:s0\"" "/dev/$NEXT_DEV" "$MP"
done
fi
}
function lookup {
if [ -z "$IID" ];then
LIST=$(rbd ls)
if [ -z "$LIST" ];then
return 0
else
while read -r LINE; do
if [ $LINE == $DEVICE ];then
return 1
fi
done <<< "$LIST"
return 0
fi
else
RV=$(aws ec2 describe-volumes --region=$REGION --filters "Name=tag-key,Values=Name" "Name=tag-value,Values=$DEVICE")
RES=$(echo $RV | jq -r ".Volumes[0].VolumeId")
if [ $RES == null ];then
return 0
fi
return 1
fi
}
function make_unmount {
DRIVES=$(mount | awk "/$UUID/ {print \$1}")
if [ -z "$DRIVES" ];then
exit 0
fi
while read -r DRIVE;do
umount $DRIVE
if [ -z "$IID" ];then
rbd unmap $DRIVE
else
STRIPPED_DRIVE=$(echo $DRIVE | sed 's/\/dev\/\(.*\)$/\1/')
RV=$(aws ec2 describe-volumes --region=$REGION --filters "Name=attachment.device,Values=$STRIPPED_DRIVE")
VOL=$(echo $RV | jq -r ".Volumes[0].VolumeId")
aws ec2 detach-volume --region=$REGION --volume-id=$VOL
while [ $? -ne 0 ];do
sleep 1
aws ec2 detach-volume --region=$REGION --volume-id=$VOL
done
fi
done <<< "$DRIVES"
}
if [ $ACTION == "create" ];then
lookup
if [ $? -eq 0 ];then
create_map_and_mount
else
exit 1
fi
elif [ $ACTION == "mount" ];then
lookup
if [ $? -eq 0 ];then
exit 1
else
map_and_mount
fi
elif [ $ACTION == "umount" ];then
make_unmount
fi