Mattermost<\/strong>\u00a0has a simple web interface that can be used for administration as well as instant messaging. Besides that, there are various chat clients are available as Desktop and Mobile Apps for Mattermost chat server.<\/p>\n In this article, we are\u00a0installing Mattermost 5 on CentOS 7 server<\/strong>. We are also installing\u00a0PostgreSQL 11<\/strong>, as a prerequisite of Mattermost server software.<\/p>\n Install PostgreSQL yum repository as follows:<\/strong><\/p>\n [root@easy-admin ~]#<\/strong> rpm -ivh https:\/\/download.postgresql.org\/pub\/repos\/yum\/reporpms\/EL-7-x86_64\/pgdg-redhat-repo-latest.noarch.rpm<\/span><\/p>\n The same PostgreSQL package provides the yum repositories for various versions of PostgreSQL database.<\/p>\n Therefore, we are disabling the\u00a0PostgreSQL yum repositories<\/strong>\u00a0other than version 11 as follows.<\/p>\n [root@easy-admin ~]#<\/strong> yum-config-manager –disable pgdg10 pgdg94 pgdg95 pgdg96<\/span><\/p>\n Build yum cache for PostgreSQL repository.<\/strong><\/p>\n [root@easy-admin ~]#<\/strong> yum makecache fast<\/span><\/p>\n Install PostgreSQL client and server packages using\u00a0yum\u00a0command.<\/strong><\/p>\n [root@easy-admin ~]#<\/strong> yum install -y postgresql11 postgresql11-server<\/span><\/p>\n Initialize PostgreSQL database instance as follows.<\/strong><\/p>\n [root@easy-admin ~]#<\/strong> \/usr\/pgsql-11\/bin\/postgresql-11-setup initdb<\/span><\/p>\n Edit\u00a0pg_hba.conf\u00a0file to allow\u00a0md5\u00a0based user authentication.<\/strong><\/p>\n [root@easy-admin ~]#<\/strong> nano \/var\/lib\/pgsql\/11\/data\/pg_hba.conf<\/span><\/p>\n Find following directive:<\/strong><\/p>\n host\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0all\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0all\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 127.0.0.1\/32\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0ident Enable and start PostgreSQL service.<\/strong><\/p>\n [root@easy-admin ~]#<\/strong> systemctl enable postgresql-11.service<\/span><\/p>\n Start PostgreSQL<\/strong><\/p>\n [root@easy-admin ~]#<\/strong> systemctl start postgresql-11.service<\/span><\/p>\n Connect as\u00a0postgres\u00a0user and set password for\u00a0admin\u00a0user.<\/strong><\/p>\n [root@easy-admin ~]#<\/strong> su – postgres<\/span><\/p>\n -bash-4.2$ psql<\/span><\/p>\n psql (11.4)<\/p>\n Type “help” for help.<\/p>\n postgres=# ALTER USER postgres WITH PASSWORD ‘123’;<\/span> Create the Mattermost database.<\/strong><\/p>\n postgres=# CREATE DATABASE mattermost;<\/span><\/p>\n Create the Mattermost user.<\/strong><\/p>\n postgres=# CREATE USER mmuser WITH PASSWORD ‘123’; Grant all privileges on\u00a0mattermost\u00a0database to\u00a0mmuser.<\/strong><\/p>\n postgres=# GRANT ALL PRIVILEGES ON DATABASE mattermost to mmuser; Exit from\u00a0psql\u00a0and logout from\u00a0postgres\u00a0user.<\/strong><\/p>\n postgres=# \\q PostgreSQL 11 has been installed on CentOS 7 server.<\/p>\n Installing Mattermost 5 on CentOS 7 server:<\/strong><\/p>\n Download Mattermost software using\u00a0wget<\/strong>\u00a0command.<\/p>\n [root@easy-admin ~]#<\/strong> cd \/tmp<\/span><\/p>\n [root@easy-admin ~]# wget https:\/\/releases.mattermost.com\/5.26.1\/mattermost-5.26.1-linux-amd64.tar.gz<\/span><\/p>\n Extract downloaded TAR file using following command.<\/strong><\/p>\n [root@easy-admin ~]#<\/strong> tar -C \/opt -xvf mattermost-5.26.1-linux-amd64.tar.gz<\/span><\/p>\n Create the\u00a0storage directory\u00a0for Mattermost files. This\u00a0storage directory\u00a0is used to store files and images posted by Mattermost users.<\/strong><\/p>\n [root@easy-admin ~]#<\/strong> cd<\/span><\/p>\n [root@easy-admin ~]#<\/strong> mkdir \/opt\/mattermost\/data<\/span><\/p>\n Create OS user and group for Mattermost software.<\/strong><\/p>\n [root@easy-admin ~]#<\/strong> useradd –system –user-group mattermost<\/span><\/p>\n Adjust file permissions and ownership of\u00a0\/opt\/mattermost\u00a0directory.<\/strong><\/p>\n [root@easy-admin ~]#<\/strong> chown -R mattermost:mattermost \/opt\/mattermost<\/span> [root@easy-admin ~]#<\/strong> chmod -R g+w \/opt\/mattermost<\/span><\/p>\n Edit\u00a0\/opt\/mattermost\/config\/config.json\u00a0file to set PostgreSQL database configurations.<\/strong><\/p>\n [root@easy-admin ~]#<\/strong> nano \/opt\/mattermost\/config\/config.json<\/span><\/p>\n Search for\u00a0“SqlSettings”\u00a0section and update following directives therein.<\/strong><\/p>\n “DriverName”: “postgres”, “DataSource”: “postgres:\/\/mmuser:123@127.0.0.1:5432\/mattermost?sslmode=disable&connect_timeout=10”,<\/p>\n Testing Mattermost configurations by executing\u00a0mattermost<\/strong>\u00a0command.<\/p>\n [root@easy-admin ~]#<\/strong> cd \/opt\/mattermost\/<\/span><\/p>\n [root@easy-admin ~]#<\/strong> sudo -u mattermost .\/bin\/mattermost The server should run now!<\/em><\/p>\n Exit!<\/em><\/p>\n Create a\u00a0systemd\u00a0service unit for Mattermost.<\/strong><\/p>\n [root@easy-admin ~]#<\/strong> cd<\/span><\/p>\n [root@easy-admin ~]#<\/strong> nano \/usr\/lib\/systemd\/system\/mattermost<\/span><\/p>\n …and define the service unit directives as follows.<\/strong><\/p>\n [Unit] [Service] [Install] Save and close Nano.<\/p>\n Enable and start\u00a0mattermost.service.<\/strong><\/p>\n [root@easy-admin ~]#<\/strong> systemctl enable mattermost.service<\/span><\/p>\n [root@easy-admin ~]#<\/strong> systemctl start mattermost.service<\/span><\/p>\n Allow Mattermost service port in Linux firewall (I use CSF).<\/strong><\/p>\n [root@easy-admin ~]#<\/strong> firewall-cmd –permanent –add-port=8065\/tcp<\/span><\/p>\n [root@easy-admin ~]#<\/strong> firewall-cmd –reload<\/span><\/p>\n Open your browser and go to http:\/\/yourdomain:8065<\/p>\n Fill out the information requested!<\/p>\n Et Voil\u00e0<\/strong><\/em><\/p>\n \ud83d\ude09<\/p>\n This will work on the latest Mattermost 5.26.1<\/strong> release.<\/p>\n Hope you enjoy!<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":" Assuming that you have a running centos 7 server using webmin + virtualmin with a qualified domain name. Mattermost\u00a0is an open-source online chat service. Mattermost is developed by\u00a0Mattermost Inc, and it is written in\u00a0Golang\u00a0and\u00a0Javascript. Mattermost is designed as an internal chat server for organizations and being marketed as an alternate to\u00a0Slack. Mattermost\u00a0has a simple web … Continue reading Install Mattermost 5.26 on CentOS 7 using PostgreSQL<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":2953,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"slim_seo":{"title":"Install Mattermost 5.26 on CentOS 7 using PostgreSQL - HP Server","description":"Assuming that you have a running centos 7 server using webmin + virtualmin with a qualified domain name. Mattermost \u00a0is an open-source online chat service. Matt"},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2949","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general"],"_links":{"self":[{"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/posts\/2949","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/comments?post=2949"}],"version-history":[{"count":0,"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/posts\/2949\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/media\/2953"}],"wp:attachment":[{"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/media?parent=2949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/categories?post=2949"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/tags?post=2949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nand update it as:
\n<\/strong>host\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0all\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0all\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 127.0.0.1\/32\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0md5<\/span><\/p>\n
\nALTER ROLE<\/p>\n
\nCREATE ROLE<\/span><\/p>\n
\nGRANT<\/span><\/p>\n
\n<\/span>-bash-4.2$ exit
\nlogout
\n<\/span><\/p>\n
\n* Go get yourself a cup<\/span>![\"\"](\"https:\/\/easy-admin.ca\/wp-content\/uploads\/2020\/08\/49219-200-150x150.png\")
of coffee and let it run a bit,<\/p>\n
\nDescription=Mattermost
\nAfter=syslog.target network.target postgresql-11.service<\/p>\n
\nType=notify
\nWorkingDirectory=\/opt\/mattermost
\nUser=mattermost
\nExecStart=\/opt\/mattermost\/bin\/mattermost PIDFile=\/var\/spool\/mattermost\/pid\/master.pid
\nTimeoutStartSec=3600 LimitNOFILE=49152<\/p>\n
\nWantedBy=multi-user.target<\/p>\n![\"Mattermost\"](\"https:\/\/easy-admin.ca\/wp-content\/uploads\/2020\/08\/teamwork.png\")
<\/p>\n