From 43f89791f6e5361481795cd4f2a3e575876c3a60 Mon Sep 17 00:00:00 2001
From: yohan <783b8c87@scimetis.net>
Date: Tue, 31 Mar 2020 16:03:59 +0200
Subject: [PATCH] Using systemd to mount volumes and start containers at boot.

---
 start_or_update.sh => create.sh | 27 +++++++++------------
 docker-compose.yml              |  1 -
 install.sh                      | 42 +++++++++++++++++++++++++++++++++
 start.sh                        |  8 +++++++
 volume_list                     |  2 ++
 5 files changed, 63 insertions(+), 17 deletions(-)
 rename start_or_update.sh => create.sh (67%)
 create mode 100755 install.sh
 create mode 100755 start.sh
 create mode 100644 volume_list

diff --git a/start_or_update.sh b/create.sh
similarity index 67%
rename from start_or_update.sh
rename to create.sh
index 8051f1f..e85cf60 100755
--- a/start_or_update.sh
+++ b/create.sh
@@ -1,26 +1,21 @@
 #!/bin/bash
+#Absolute path to this script
+SCRIPT=$(readlink -f $0)
+#Absolute path this script is in
+SCRIPTPATH=$(dirname $SCRIPT)
+
+cd $SCRIPTPATH
+
 test -z $1 || HOST="_$1"
 test -z $2 || INSTANCE="_$2"
 test -f ~/secrets.tar.gz.enc || { echo "ERROR: ~/secrets.tar.gz.enc not found, exiting."; exit 1; }
-openssl enc -aes-256-cbc -d -in ~/secrets.tar.gz.enc | tar -zxv --strip 2 secrets/docker-mysql-stack${HOST}${INSTANCE}/debian.cnf
+openssl enc -aes-256-cbc -d -in ~/secrets.tar.gz.enc \
+| sudo tar -zxv --strip 2 secrets/docker-mysql-stack${HOST}${INSTANCE}/debian.cnf \
+|| { echo "Could not extract from secrets archive, exiting."; rm -f ~/secrets.tar.gz.enc; exit 1; }
 sudo chown root. debian.cnf
 
 test -f ~/openrc.sh || { echo "ERROR: ~/openrc.sh not found, exiting."; exit 1; }
 source ~/openrc.sh
-INSTANCE=$(/home/yohan/env_py3/bin/openstack server show -c id --format value $(hostname))
-for VOLUME in mysql-server_data mysql-server_dumps
-do
-    sudo mkdir -p /mnt/volumes/${VOLUME}
-    if ! mountpoint -q /mnt/volumes/${VOLUME}
-    then
-         VOLUME_ID=$(/home/yohan/env_py3/bin/openstack volume show ${VOLUME} -c id --format value)
-         test -e /dev/disk/by-id/*${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/${VOLUME}
-         mountpoint -q /mnt/volumes/${VOLUME} || { echo "ERROR: could not mount /mnt/volumes/${VOLUME}, exiting."; exit 1; }
-    fi
-done
-
 export OS_REGION_NAME=GRA
 test -f ~/duplicity_password.sh || { echo "ERROR: ~/duplicity_password.sh not found, exiting."; exit 1; }
 source ~/duplicity_password.sh
@@ -49,7 +44,7 @@ cd ~/build/docker-mysql; export VERSION_MYSQL=$(git show-ref --head| head -1 | c
 
 sudo docker build -t mysql-server:$VERSION_MYSQL ~/build/docker-mysql
 
-sudo -E bash -c 'docker-compose up -d --force-recreate'
+sudo -E bash -c 'docker-compose up --no-start --force-recreate'
 # --force-recreate is used to recreate container when a file has changed
 # We cannot remove the secrets files or restarting the container would become impossible
 # rm -f debian.cnf
diff --git a/docker-compose.yml b/docker-compose.yml
index a182db7..ab94f41 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -6,7 +6,6 @@ services:
     image: mysql-server:$VERSION_MYSQL
     #build: "https://git.scimetis.net/yohan/docker-mysql.git"
     container_name: mysql-server
-    restart: always
     networks:
       - mysqlnet
     volumes:
diff --git a/install.sh b/install.sh
new file mode 100755
index 0000000..a1e79a3
--- /dev/null
+++ b/install.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+#Absolute path to this script
+SCRIPT=$(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 ${STACK}.service
diff --git a/start.sh b/start.sh
new file mode 100755
index 0000000..1f4bfdf
--- /dev/null
+++ b/start.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+#Absolute path to this script
+SCRIPT=$(readlink -f $0)
+#Absolute path this script is in
+SCRIPTPATH=$(dirname $SCRIPT)
+
+cd $SCRIPTPATH
+sudo docker-compose start
diff --git a/volume_list b/volume_list
new file mode 100644
index 0000000..6aaacc1
--- /dev/null
+++ b/volume_list
@@ -0,0 +1,2 @@
+mysql-server_data
+mysql-server_dumps