Upgrading Mattermost Server with a Script

Important

This unofficial guide is maintained by the Mattermost community and this deployment configuration is not yet officially supported by Mattermost, Inc. Community testing, feedback, and improvements are welcome and greatly appreciated.

Preparing the script

Copy and save the following script to your Mattermost server as update_mattermost.sh.

 #!/usr/bin/env bash

 # Immediately exit if a command run from a loop, a pipeline or a compound
 # command statement fails
 set -e

 ################################################################################
 # Configuration - please adapt it to your environment
 ################################################################################

 # Mattermost path
 mattermostdir="/opt/mattermost"

 # Backup path
 backupdir="/opt"

 # Temporary path for download
 downloaddir="/tmp"

 # Specify the edition you use
 edition="Team"
 #edition="Enterprise"

 # Start with plugins? Set 1 for starting with plugins active
 plugins=0

 # Set 1 for overriding the database backup question
 backupdatabase=0

 ################################################################################

 # Check dependencies

 if ((EUID != 0)); then
     echo "[-] This script needs to be run as root to work properly. Aborted."
     exit 1
 fi

 if ! type "systemctl" >/dev/null 2>&1 && ! type "service" >/dev/null 2>&1; then
    echo "[-] The daemon manager (systemd or sysvinit) is not accessible. Aborted."
    exit 1
 fi

 if ! type "wget" >/dev/null 2>&1 && ! type "curl" >/dev/null 2>&1; then
    echo "[-] A download tool like wget or curl is not accessible. Aborted."
    exit 1
 fi

 # Check requirements

 if [[ "${edition}" != "Team" ]] && [[ "${edition}" != "Enterprise" ]]; then
    echo "[-] The edition must either be \"Team\" or \"Enterprise\". Aborted."
    exit 1
 fi

 # Ask for database backup

 if [ "${backupdatabase}" -eq 0 ]; then
  read -r -p "[?] Do you have a current backup of the Mattermost database? [Y/n] " input

  case "$input" in
      [yY])
          echo "[+] Starting the update process of Mattermost..."
      ;;
      *)
          echo "[-] Please create a backup and start again"
          exit 1
      ;;
  esac
 fi

 # Check if Mattermost exists in the path provided above

 if [ ! -f "${mattermostdir}/bin/mattermost" ];  then
    echo "Mattermost not found please check the path for the Mattermost directory"
    exit 1
 fi

 # Get version from argument

 if [ -z "${1}" ]; then
   echo "Please specify the version of Mattermost to download"
   exit 1
 fi
 version="${1}"

 if [[ "${edition}" == "Team" ]]; then
     url="https://releases.mattermost.com/${version}/mattermost-team-${version}-linux-amd64.tar.gz"
 else
     url="https://releases.mattermost.com/${version}/mattermost-${version}-linux-amd64.tar.gz"
 fi

 # Main

 # Get the file

 echo "[+] Downloading Mattermost ${edition} \"${version}\"..."
 if type "curl" >/dev/null 2>&1; then
  if ! curl -LC - "${url}" -o "${downloaddir}/mattermost-upgrade.tar.gz"; then
      echo "[-] An issue occurred when downloading the Mattermost update package."
      exit 1
     fi
 else
  if ! wget "${url}" -o "${downloaddir}/mattermost-upgrade.tar.gz"; then
      echo "[-] An issue occurred when downloading the Mattermost update package."
      exit 1
  fi
 fi

 echo "[+] The Mattermost update package has been downloaded with successful"

 echo "[+] Extracting Mattermost update package..."
 mkdir -p "${downloaddir}/mattermost-upgrade"
 tar -xf "${downloaddir}/mattermost-upgrade.tar.gz" -C "${downloaddir}/mattermost-upgrade/"

 echo "[+] Stopping Mattermost service..."
 if type systemctl >/dev/null 2>&1;  then
    systemctl stop mattermost
 else
    service mattermost stop
 fi

 if pgrep mattermost > /dev/null; then
    echo "[-] Mattermost is still running. Update not possible. Aborting..."
    rm -rf "${downloaddir}/mattermost-upgrade"
    rm -f "${downloaddir}/mattermost-upgrade.tar.gz"
    exit 1
 fi

 echo "[+] Creating backup of Mattermost..."
 cp -ra "${mattermostdir}" "${backupdir}/mattermost-backup-$(date +'%F-%H-%M')/"

 echo "[+] Preparing update..."
 USER="$(stat -c '%U' ${mattermostdir}/bin/mattermost)"
 GROUP="$(stat -c '%G' ${mattermostdir}/bin/mattermost)"
 chown -hR "$USER":"$GROUP" "${downloaddir}/mattermost-upgrade/"

 # Clean up Mattermost directory

find "${mattermostdir}" -mindepth 1 -maxdepth 1 -not \( -path "${mattermostdir}/config" -o -path "${mattermostdir}/logs" -o -path "${mattermostdir}/plugins" -o     -path "${mattermostdir}/data" \) -delete

# Rename plugin directory

 if [ "${plugins}" -eq 0 ];  then
    echo "[+] Renaming plugin folder..."
    mv "${mattermostdir}/plugins/" "${mattermostdir}/plugins~"
    mv "${mattermostdir}/client/plugins/" "${mattermostdir}/client/plugins~"
 fi

 echo "[+] Updating Mattermost..."
 cp -an "${downloaddir}/mattermost-upgrade/*" ${mattermostdir}

 echo "[+] Cleaning Mattermost temporary files..."
 rm -rf "${downloaddir}/mattermost-upgrade/"
 rm -f "${downloaddir}/mattermost-upgrade.gz"

 echo "[+] Allowing Mattermost to run on port 0-1023..."
 setcap cap_net_bind_service=+ep "${mattermostdir}/bin/mattermost"

 echo "[+] Starting Mattermost service..."
 if type systemctl >/dev/null 2>&1;  then
    systemctl start mattermost
 else
    service mattermost start
 fi

 echo "[+] Mattermost updated with successful"

 if [ "${plugins}" -eq 0 ];  then
    echo "*************************************************"
    echo "Dont forget to reactivate your plugins"
    echo "mv \"${mattermostdir}/plugins~\" \"${mattermostdir}/plugins\""
    echo "mv \"${mattermostdir}/client/plugins\" \"${mattermostdir}/client/plugins~\""
    echo "*************************************************"
 fi

Make it executable.

# chmod +x ./update_mattermost.sh

Please adjust the parameters at the beginning of the script according to your environment.

Start the script

To start the update process, start the script and add the desired version number as an argument.

# ./upgrade_mattermost.sh <VERSION>

Example:

# ./upgrade_mattermost.sh 5.26.0