Deploying Mantis Bug Tracker on Google Cloud Platform
This ended up written up for use on GCP


Need epel-release package installed.
sudo yum install php php-pgsql php-mbstring php-fpm postgresql-server postgresql

Database Server

In the trial environment I am using postgresql on the VM
sudo postgresql-setup initdb
sudo systemctl enable postgresql
sudo systemctl start postgresql
Setup the postgres password
$ sudo passwd postgres
# enter new password
$ su - postgres
$ psql
postgres=# \password
# enter same password
postgres=# \q
$ exit
As the postgres user also modify /var/lib/pgsql/data/pg_hba.conf to set md5 method for all IPv4 local connections.
host all all md5

Mantis Install

Grab the source
curl -O ""
Make a /srv/www directory and extract the contents into a folder mantisbt .
semanage fcontext -a -t httpd_sys_content_t "/srv/www(/.*)?"
restorecon -R -v /srv/www

Caddy Install

Grab the tarball
curl -O caddy.tar.gz ""
Follow the installation instructions in caddy/dist/init/linux-systemd at master · mholt/caddy · GitHub to enable systemd support, substituting /var/www for /srv/www .
The /etc/caddy/Caddyfile is as simple as:
root /srv/www/mantisbt
fastcgi / php
log stdout
Allow web server to connect to database.
sudo setsebool -P httpd_can_network_connect_db on
Enable firewall rule
sudo firewall-cmd --zone=public --add-port=8080/tcp --permanent
sudo firewall-cmd --reload

Configure PHP-FPM

By default php-fpm is configured to use the apache user on CentOS. Caddy and the mantisbt files use www-data so update this in /etc/php-fpm.d/www.conf by changing the user and group directives.
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Database Server
Mantis Install
Caddy Install
Configure PHP-FPM