Using systemd to mount volumes and start containers at boot.

create.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+#Absolute path to this script
+SCRIPT=$(readlink -f $0)
+#Absolute path this script is in
+SCRIPTPATH=$(dirname $SCRIPT)
+
+cd $SCRIPTPATH
+unset VERSION_ELASTICSEARCH
+export VERSION_ELASTICSEARCH=$(git ls-remote https://git.scimetis.net/yohan/docker-elasticsearch.git| head -1 | cut -f 1|cut -c -10)
+
+mkdir -p ~/build
+git clone https://git.scimetis.net/yohan/docker-elasticsearch.git ~/build/docker-elasticsearch
+sudo docker build -t elasticsearch:$VERSION_ELASTICSEARCH ~/build/docker-elasticsearch
+
+sudo -E bash -c 'docker-compose up --no-start'
+
+rm -rf ~/build

docker-compose.yml

@@ -9,7 +9,6 @@ services:
     environment:
       - discovery.type=single-node
       - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
-    restart: always
     expose:
       - '9200'
       - '9300'

install.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+#Absolute path to this script
+SCRIPT=$(readlink -f $0)
+#Absolute path this script is in
+SCRIPTPATH=$(dirname $SCRIPT)
+STACK=$(basename "$SCRIPTPATH")
+
+for VOLUME in $(awk NF $SCRIPTPATH/volume_list | tr -d "[:blank:]")
+do
+    systemctl enable mnt-cinder-volume@${VOLUME}.service
+done
+
+cat << EOF > /etc/systemd/system/${STACK}.service
+[Unit]
+Description=Starting ${STACK}
+After=network-online.target firewalld.service docker.service docker.socket
+Wants=network-online.target docker.service
+Requires=docker.socket
+EOF
+
+for VOLUME in $(awk NF $SCRIPTPATH/volume_list | tr -d "[:blank:]")
+do
+    cat << EOF >> /etc/systemd/system/${STACK}.service
+After=mnt-cinder-volume@${VOLUME}.service
+After=mnt-volumes-${VOLUME}.mount
+Wants=mnt-cinder-volume@${VOLUME}.service
+Requires=mnt-volumes-${VOLUME}.mount
+
+EOF
+done
+
+cat << EOF >> /etc/systemd/system/${STACK}.service
+[Service]
+Type=oneshot
+User=$SUDO_USER
+ExecStart=$SCRIPTPATH/start.sh
+
+[Install]
+WantedBy=multi-user.target
+EOF
+systemctl daemon-reload
+systemctl enable ${STACK}.service

start.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+#Absolute path to this script
+SCRIPT=$(readlink -f $0)
+#Absolute path this script is in
+SCRIPTPATH=$(dirname $SCRIPT)
+
+cd $SCRIPTPATH
+sudo docker-compose start

start_or_update.sh

@@ -1,23 +0,0 @@
-#!/bin/bash
-# --force-recreate is used to recreate container when crontab file has changed
-source ~/openrc.sh
-INSTANCE=$(/home/yohan/env_py3/bin/openstack server show -c id --format value $(hostname))
-sudo mkdir -p /mnt/volumes/elasticsearch_data
-if ! mountpoint -q /mnt/volumes/elasticsearch_data
-then
-     VOLUME_ID=$(/home/yohan/env_py3/bin/openstack volume show elasticsearch_data -c id --format value)
-     test -e /dev/disk/by-id/*${VOLUME_ID:0:20} || nova volume-attach $INSTANCE $VOLUME_ID auto
-     sleep 3
-     sudo mount /dev/disk/by-id/*${VOLUME_ID:0:20} /mnt/volumes/elasticsearch_data
-fi
-
-unset VERSION_ELASTICSEARCH
-export VERSION_ELASTICSEARCH=$(git ls-remote https://git.scimetis.net/yohan/docker-elasticsearch.git| head -1 | cut -f 1|cut -c -10)
-
-mkdir -p ~/build
-git clone https://git.scimetis.net/yohan/docker-elasticsearch.git ~/build/docker-elasticsearch
-sudo docker build -t elasticsearch:$VERSION_ELASTICSEARCH ~/build/docker-elasticsearch
-
-sudo -E bash -c 'docker-compose up -d --force-recreate'
-
-rm -rf ~/build

volume_list

@@ -0,0 +1 @@
+elasticsearch_data