Platypuschan · October 24, 2022 22:09 · Oct 15, 2022 · Oct 15, 2022 · Feb 4, 2022 · Jun 8, 2021
diff --git a/boot.sh b/boot.sh
@@ -18,7 +18,7 @@
 #
 # For these changes to persist after SCALE reboots and upgrades, run the script at start-up
 #   Schedule this script to run via System Settings -> Advanced -> Init/Shutdown Scripts
-#   Click Add -> Type: Script and choose this script -> When: choose to run as Post Init
+#   Click Add -> Type: Script and choose this script -> When: choose to run as Pre Init
 
 ## set the path to your docker directory and specify the zvol
 docker_directory='/mnt/data/_docker'
@@ -36,6 +36,7 @@ grep -q 'docker-zvol-ext4' /etc/fstab || {
 ## HEREDOC: docker/daemon.json
 read -r -d '' JSON << END_JSON
 {
+  "storage-driver": "overlay2",
   "data-root": "${docker_directory}",
   "exec-opts": [
     "native.cgroupdriver=cgroupfs"

diff --git a/boot.sh b/boot.sh
@@ -1,21 +1,76 @@
 #!/usr/bin/env bash
 
-# Using Docker on TrueNAS SCALE (no Kubernetes)
-# 
-# Don't setup Apps via the TrueNAS Web GUI (don't choose a pool for Apps when asked)
-# Make a dedicated docker dataset on one of your data pools
-# Store this script somewhere else on your pool (not in the Docker dataset)
-# Make a daemon.json file in the same directory with the following contents:
-# {"data-root": "/mnt/path/to/desired/docker/dataset/", "exec-opts": ["native.cgroupdriver=cgroupfs"]}
-# Then schedule this script to start via System Settings -> Advanced -> Init/Shutdown Scripts -> Add:
-# Choose Type: Script and choose this script, choose to run at Pre Init under When
-# 
-# Now install e.g. Portainer to manage your containers
+#
+# Enable docker and docker-compose on TrueNAS SCALE (no Kubernetes)
+#
+# This script is a hack! Use it at your own risk!!
+# Using this script to enable Docker is NOT SUPPORTED by ix-systems!
+# You CANNOT use SCALE Apps while using this script!
+#
+# 1  Create a dedicated Docker zvol on one of your zpools: zfs create -V 100G data/_docker
+# 2  Create an ext4 filesystem on your new zvol: mkfs.ext4 /dev/zvol/data/_docker
+# 3  Create a directory where you can mount the ext4 filesystem: mkdir /mnt/data/_docker
+# 4  Save this script somewhere else on your zpool, not in the Docker dataset
+# 5  Edit line 24 and 25 of the script, set paths to the Docker directory and zvol you created
+# 7  If this is NOT the first time you run this script (updating to new location/zvol):
+#     - Check the contents of /etc/fstab, and remove the old # docker-zvol-ext4 rule if it's there
+# 6  You can now start Docker by running the script from the SCALE console
+#
+# For these changes to persist after SCALE reboots and upgrades, run the script at start-up
+#   Schedule this script to run via System Settings -> Advanced -> Init/Shutdown Scripts
+#   Click Add -> Type: Script and choose this script -> When: choose to run as Post Init
 
-SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
+## set the path to your docker directory and specify the zvol
+docker_directory='/mnt/data/_docker'
+docker_zvol='/dev/zvol/data/_docker'
 
-# Setup custom Docker config (overwrite if contents changed due to system update)
-cmp --silent "${SCRIPT_DIR}/daemon.json" /etc/docker/daemon.json || echo "Updating Docker config..." && cp "${SCRIPT_DIR}/daemon.json" /etc/docker/daemon.json
+## this part will add a new fstab rule, if the fstab file doesn't contain our special docker-zvol-ext4 comment
+## if this is not the first time you run this script, our special comment is already there
+## so if you ever change the docker_directory and docker_zvol paths in the future, also remove the old
+## fstab rule and comment from /etc/fstab
+grep -q 'docker-zvol-ext4' /etc/fstab || {
+    printf "# docker-zvol-ext4\n${docker_zvol} ${docker_directory} ext4 rw,relatime,stripe=4 0 0\n" >> /etc/fstab
+    mount "${docker_directory}" && echo 'Mounted docker directory'
+}
 
-echo "Starting Docker"
-systemctl start docker
+## HEREDOC: docker/daemon.json
+read -r -d '' JSON << END_JSON
+{
+  "data-root": "${docker_directory}",
+  "exec-opts": [
+    "native.cgroupdriver=cgroupfs"
+  ]
+}
+END_JSON
+
+## path to docker daemon file
+docker_daemon='/etc/docker/daemon.json'
+
+if [ ${EUID} -ne 0 ]; then
+  echo "Please run this script as root or using sudo"
+elif [ "$(systemctl is-enabled k3s)" == "enabled" ]; then
+  echo "You can not use this script while k3s is enabled"
+elif [ "$(systemctl is-active k3s)" == "active" ]; then
+  echo "You can not use this script while k3s is active"
+elif ! which docker &> /dev/null; then
+  echo "Docker executable not found"
+elif ! chmod +x /usr/bin/docker-compose &> /dev/null; then
+  echo "Failed to make docker-compose executable"
+elif ! install -d -m 755 -- /etc/docker &> /dev/null; then
+  echo "Failed to install directory: /etc/docker"
+elif [ ! -d "${docker_directory}" ] ; then
+ echo "Directory not found: ${docker_directory}"
+else
+  echo "Checking file: ${docker_daemon}"
+  if test "${JSON}" != "$(cat ${docker_daemon} 2> /dev/null)"; then
+    echo "Updating file: ${docker_daemon}"
+    jq -n "${JSON}" > ${docker_daemon}
+    if [ "$(systemctl is-active docker)" == "active" ]; then
+      echo "Restarting Docker"
+      systemctl restart docker
+    elif [ "$(systemctl is-enabled docker)" != "enabled" ]; then
+      echo "Enable and starting Docker"
+      systemctl enable --now docker
+    fi
+  fi
+fi
diff --git a/boot.sh b/boot.sh
@@ -5,7 +5,7 @@
 # Don't setup Apps via the TrueNAS Web GUI (don't choose a pool for Apps when asked)
 # Make a dedicated docker dataset on one of your data pools
 # Store this script somewhere else on your pool (not in the Docker dataset)
-# Make a daeomon.json file in the same directory with the following contents:
+# Make a daemon.json file in the same directory with the following contents:
 # {"data-root": "/mnt/path/to/desired/docker/dataset/", "exec-opts": ["native.cgroupdriver=cgroupfs"]}
 # Then schedule this script to start via System Settings -> Advanced -> Init/Shutdown Scripts -> Add:
 # Choose Type: Script and choose this script, choose to run at Pre Init under When

diff --git a/boot.sh b/boot.sh
@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+# Using Docker on TrueNAS SCALE (no Kubernetes)
+# 
+# Don't setup Apps via the TrueNAS Web GUI (don't choose a pool for Apps when asked)
+# Make a dedicated docker dataset on one of your data pools
+# Store this script somewhere else on your pool (not in the Docker dataset)
+# Make a daeomon.json file in the same directory with the following contents:
+# {"data-root": "/mnt/path/to/desired/docker/dataset/", "exec-opts": ["native.cgroupdriver=cgroupfs"]}
+# Then schedule this script to start via System Settings -> Advanced -> Init/Shutdown Scripts -> Add:
+# Choose Type: Script and choose this script, choose to run at Pre Init under When
+# 
+# Now install e.g. Portainer to manage your containers
+
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
+
+# Setup custom Docker config (overwrite if contents changed due to system update)
+cmp --silent "${SCRIPT_DIR}/daemon.json" /etc/docker/daemon.json || echo "Updating Docker config..." && cp "${SCRIPT_DIR}/daemon.json" /etc/docker/daemon.json
+
+echo "Starting Docker"
+systemctl start docker
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