Install Mattermost on RHEL#
Available on all plans
Self-hosted deployments
Minimum system requirements:
- Operating System: Enterprise Linux 7+, Oracle Linux 6+, Oracle Linux 7+
- Hardware: 1 vCPU/core with 2GB RAM (support for up to 1,000 users)
- Database: PostgreSQL v11+
- Network:
- Application 80/443, TLS, TCP Inbound
- Administrator Console 8065, TLS, TCP Inbound
- SMTP port 10025, TCP/UDP Outbound
Note
You need a PostgreSQL database. See the database preparation documentation for details on this prerequisite.
A Mattermost deployment includes 4 steps: download, install, setup, and update.
Download the latest Mattermost Server tarball#
In a terminal window, ssh onto the system that will host the Mattermost Server.
Using wget
, download the Mattermost Server release you want to install.
wget https://releases.mattermost.com/10.0.1/mattermost-10.0.1-linux-amd64.tar.gz
wget https://releases.mattermost.com/9.11.3/mattermost-9.11.3-linux-amd64.tar.gz
If you are looking for an older release, Enterprise and Team Edition releases can be found in our version archive documentation.
Install#
Ahead of installing the Mattermost Server, it’s good practice to update all your repositories and, where required, update existing packages by running the following commands:
sudo dnf update
sudo dnf upgrade
After any updates, and any system reboots, are complete, install the Mattermost Server.
Install the Mattermost Server by extracting the tarball, creating users and groups, and setting file/folder permissions.
First extract the tarball:
tar -xvzf mattermost*.gz
Now move the entire folder to the /opt
directory (or whatever path you require):
sudo mv mattermost /opt
Note
If you choose a custom path, ensure this alternate path is used in all steps that follow.
By default the Mattermost Server uses /opt/mattermost/data
as the folder for files. This can be changed in the System Console during setup (even using alternative storage such as S3). Create the default storage folder:
sudo mkdir /opt/mattermost/data
Now set up a user and group called mattermost
:
sudo useradd --system --user-group mattermost
Note
If you choose a custom user and group name, ensure it is used in all the steps that follow.
Set the file and folder permissions for your installation:
sudo chown -R mattermost:mattermost /opt/mattermost
Give the mattermost
group write permissions to the application folder:
sudo chmod -R g+w /opt/mattermost
You will now have the latest Mattermost Server version installed on your system. Starting and stopping the Mattermost Server is done using systemd
. Create the systemd unit file:
sudo touch /lib/systemd/system/mattermost.service
As root, edit the systemd unit file to add the following lines:
[Unit]
Description=Mattermost
After=network.target
[Service]
Type=notify
ExecStart=/opt/mattermost/bin/mattermost
TimeoutStartSec=3600
KillMode=mixed
Restart=always
RestartSec=10
WorkingDirectory=/opt/mattermost
User=mattermost
Group=mattermost
LimitNOFILE=49152
[Install]
WantedBy=multi-user.target
Save the file and reload systemd using sudo systemctl daemon-reload
. Mattermost Server is now installed and is ready for setup.
Note
If you are installing the Mattermost server on the same system as your database, you may want to add both After=postgresql.service
and BindsTo=postgresql.service
to the [Unit]
section of the systemd unit file.
Setup#
Before you start the Mattermost Server, you need to edit the configuration file. A default configuration file is located at /opt/mattermost/config/config.json
.
We recommend taking a backup of this default config ahead of making changes:
sudo cp /opt/mattermost/config/config.json /opt/mattermost/config/config.defaults.json
Configure the following properties in this file:
Set
DriverName
to"postgres"
. This is the default and recommended database for all Mattermost installations.Set
DataSource
to"postgres://mmuser:<mmuser-password>@<host-name-or-IP>:5432/mattermost?sslmode=disable&connect_timeout=10"
replacingmmuser
,<mmuser-password>
,<host-name-or-IP>
, andmattermost
with your database name.Set your
"SiteURL"
: The domain name for the Mattermost application (e.g.https://mattermost.example.com
).
After modifying the config.json
configuration file, you can now start the Mattermost server:
sudo systemctl start mattermost
Verify that Mattermost is running: curl http://localhost:8065
. You should see the HTML that’s returned by the Mattermost Server.
The final step, depending on your requirements, is to run sudo systemctl enable mattermost.service
so that Mattermost will start on system boot.
Updates#
Updating your Mattermost Server installation when using the tarball requires several manual steps. See the upgrade Mattermost Server documentation for details.
Remove Mattermost#
If you wish to remove the Mattermost Server for any reason, you must stop the Mattermost Server, back up all important files, and then run this command:
sudo rm /opt/mattermost
Note
Depending on your configuration, there are several important folders in /opt/mattermost
to backup. These are config
, logs
, plugins
, client/plugins
, and data
. We strongly recommend you back up these locations before running the rm
command.
You may also remove the Mattermost systemd unit file and the user/group created for running the application.
Frequently asked questions#
Why doesn’t Mattermost start at system boot?#
To have the Mattermost Server start at system boot, the systemd until file needs to be enabled. Run the following command:
sudo systemctl enable mattermost.service
Why does Mattermost fail to start at system boot?#
If your database is on the same system as your Mattermost Server, we recommend editing the default /lib/systemd/system/mattermost.service
systemd unit file to add After=postgresql.service
and BindsTo=postgresql.service
to the [Unit]
section.
Can I run Mattermost without a proxy?#
Yes. Mattermost binds to 443 instead of 8065. The Mattermost binary requires the correct permissions to do that binding. You must activate the CAP_NET_BIND_SERVICE
capability to allow the new Mattermost binary to bind to ports lower than 1024 by running the following command:
sudo setcap cap_net_bind_service=+ep ./mattermost/bin/mattermost
Note
We highly recommend using a proxy in front of Mattermost server for up to 200 concurrent users. If you have fewer than 200 concurrent users, you can set up TLS. If you’re exceeding 200 concurrent users, you’ll need a proxy, such as NGINX, in front of Mattermost to manage the traffic.