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Mattermost

Installing PostgreSQL Database.

With Unix socket.

A SlackBuild for building and installing PostgreSQL can be found at SlackBuilds.org; follow the instructions there, and install PostgreSQL. After installing PostgreSQL perform the following steps:

  1. Initialize the PostgreSQL database:
    su postgres -c "initdb -D /var/lib/pgsql/10.2/data --locale=en_US.UTF-8 -A md5 -W"
  2. Start the PostgreSQL database:
    /etc/rc.d/rc.postgresql start
  3. Switch to the postgres Linux user account that was created during the installation.
    su -l postgres
  4. Start the PostgreSQL interactive terminal.
    psql
  5. Create the Mattermost database.
    CREATE DATABASE mattermostdb;
  6. Create mattermost user and give it the rights on the database:
    CREATE USER mattermost;
    GRANT ALL PRIVILEGES ON DATABASE mattermostdb to mattermost;
  7. Exit out of psql with \q.
  8. Setup the Unix socket by editing file: /var/lib/pgsql/10.2/data/pg_hba.conf, replace
    # "local" is for Unix domain socket connections only
    local all all md5

    with

    local mattermostdb mattermost peer
  9. Add the following to “/var/lib/pgsql/10.2/data/pg_ident.conf”
    echo "mattermap mattermostdb mattermost" >> /var/lib/pgsql/10.2/data/pg_ident.conf
  10. Restart PostgreSQL
    exit
    /etc/rc.d/rc.postgresql restart
  11. Add the mattermost system user:
    useradd --system --user-group mattermost
  12. Verify things are working thus far
    sudo -u mattermost psql --dbname=mattermostdb --username=mattermost

Sources


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