pgAdmin is the leading Open Source feature-rich PostgreSQL administration and development platform that runs on Linux, Unix, Mac OS X, and Windows. pgAdmin can be used to manage PostgreSQL 9.2 and above. With the release of pgAdmin 4, there was migration from Bootstrap 3 to Bootstrap 4. In this article we will be installing pgAdmin 4 on CentOS 7 & Fedora 36/35/34/33/32.
For CentOS 8: How To Install pgAdmin 4 on CentOS 8 Linux
Consider system update before the installation of pgAdmin 4 on CentOS 7 & Fedora.
sudo yum -y updateInstall pgAdmin4 on CentOS 7 / Fedora 36/35/34/33/32
You need to have PostgreSQL installed on your system before you can install pgAdmin 4.
Step 1: Add pgAdmin 4 repository
After installing PostgreSQL, you can begin the installation of pgAdmin 4 on CentOS 7. You need to add pgAdmin 4 RPM:
CentOS 7:
sudo yum install https://ftp.postgresql.org/pub/pgadmin/pgadmin4/yum/pgadmin4-redhat-repo-2-1.noarch.rpmFedora 36:
sudo tee /etc/yum.repos.d/pgadmin4.repo<<EOF
[pgAdmin4]
name=pgadmin4
baseurl=https://ftp.postgresql.org/pub/pgadmin/pgadmin4/yum/fedora/fedora-35-\$basearch
enabled=1
gpgcheck=0
EOFFedora 35/34/33/32/31/30:
sudo rpm -i https://ftp.postgresql.org/pub/pgadmin/pgadmin4/yum/pgadmin4-fedora-repo-2-1.noarch.rpmSuccessful installation message:
.....
Total size: 4.0 k
Installed size: 4.0 k
Is this ok [y/d/N]: y
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : pgadmin4-redhat-repo-2-1.noarch 1/1
Verifying : pgadmin4-redhat-repo-2-1.noarch 1/1
Installed:
pgadmin4-redhat-repo.noarch 0:2-1
Complete!You can check the contents of the repository file created using the following command:
$ cat /etc/yum.repos.d/pgadmin4.repo
[pgAdmin4]
name=pgadmin4
baseurl=https://ftp.postgresql.org/pub/pgadmin/pgadmin4/yum/redhat/rhel-$releasever-$basearch
enabled=1
repo_gpgcheck=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/PGADMIN_PKG_KEYStep 2: Install pgAdmin4 on CentOS 7 / Fedora 36/35/34/33/32
Then install the pgAdmin4 packageon CentOS 7 / Fedora.
Install for web mode only, suitable for server:
sudo yum install pgadmin4-webInstall for both desktop and web modes.
sudo yum install pgadmin4Install for desktop mode only, suitable for Desktop:
sudo yum install pgadmin4-desktopReview installation dependency tree then proceed:
Dependencies resolved.
======================================================================================================================================================================================================
Package Architecture Version Repository Size
======================================================================================================================================================================================================
Installing:
pgadmin4 noarch 6.9-1.fc35 pgAdmin4 6.2 k
Installing dependencies:
libatomic x86_64 12.1.1-1.fc36 updates 37 k
pgadmin4-desktop x86_64 6.9-1.fc35 pgAdmin4 82 M
pgadmin4-server x86_64 6.9-1.fc35 pgAdmin4 92 M
pgadmin4-web noarch 6.9-1.fc35 pgAdmin4 8.7 k
python3-mod_wsgi x86_64 4.9.0-2.fc36 fedora 959 k
Transaction Summary
======================================================================================================================================================================================================
Install 6 Packages
Total download size: 176 M
Installed size: 596 M
Is this ok [y/N]: yStep 3: Configure pgAdmin 4 on CentOS 7 / Fedora
Now that we have pgAdmin 4 installed, let’s configure it.
1. Start and enable httpd service to start on boot
sudo systemctl start httpd && sudo systemctl enable httpdYou can confirm service status by running:
$ systemctl status httpd
● httpd.service - The Apache HTTP Server
Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled)
Active: active (running) since Sun 2021-10-24 22:34:22 UTC; 10s ago
Docs: man:httpd(8)
man:apachectl(8)
Main PID: 6377 (httpd)
Status: "Total requests: 0; Current requests/sec: 0; Current traffic: 0 B/sec"
CGroup: /system.slice/httpd.service
├─6377 /usr/sbin/httpd -DFOREGROUND
├─6378 /usr/sbin/httpd -DFOREGROUND
├─6379 /usr/sbin/httpd -DFOREGROUND
├─6380 /usr/sbin/httpd -DFOREGROUND
├─6381 /usr/sbin/httpd -DFOREGROUND
├─6382 /usr/sbin/httpd -DFOREGROUND
└─6383 /usr/sbin/httpd -DFOREGROUND
Oct 24 22:34:22 centos.example.com systemd[1]: Starting The Apache HTTP Server...
Oct 24 22:34:22 centos.example.com httpd[6377]: [Sun Oct 24 22:34:22.727756 2021] [so:warn] [pid 6377] AH01574: module wsgi_module is already loaded, skipping
Oct 24 22:34:22 centos.example.com systemd[1]: Started The Apache HTTP Server.Finally, if you have installed pgadmin4 or pgadmin4-web, run the web setup script to configure the system to run in web mode:
sudo /usr/pgadmin4/bin/setup-web.shThis will require you to input pgadmin4 user email address and set the password:
Setting up pgAdmin 4 in web mode on a Redhat based platform...
Creating configuration database...
NOTE: Configuring authentication for SERVER mode.
Enter the email address and password to use for the initial pgAdmin user account:
Email address: <input-email-address>
Password: <input-password>
Retype password: <Reenter-password>
pgAdmin 4 - Application Initialisation
======================================
Creating storage and log directories...Agree for the configuration of Apache Web server.
Configuring SELinux...
The Apache web server is not running. We can enable and start the web server for you to finish pgAdmin 4 installation. Continue (y/n)? y
Created symlink /etc/systemd/system/multi-user.target.wants/httpd.service → /usr/lib/systemd/system/httpd.service.
Apache successfully enabled.
Apache successfully started.
You can now start using pgAdmin 4 in web mode at http://127.0.0.1/pgadmin4Step 4: Access pgAdmin 4 Web Interface
if you have an active firewall service, allow http port
sudo firewall-cmd --permanent --add-service=http
sudo firewall-cmd --reloadOpen http://[serverip_or_hostname]/pgadmin4 to log in to the pgAdmin with the credentials created step 6 above.
On the first page of pgAdmin, add a PostgreSQL server to administer with pgAdmin by clicking on “Add New Server”. This can be local or a remote PostgreSQL server.
Under the “General” section, give the server a name & description.
Under “Connection” tab, provide access details – DB host, DB user and Password.
When done, Click Save button to save the configurations. If you were successful adding the server, the name will appear in the left sidebar. Select the server to see database summary information and make changes.
I hope our article was helpful in installing pgAdmin 4 on CentOS 7 and Fedora server/Desktop.
