How to Install Katello on CentOS 7.x

Katello is an open source content management software. Katello is the alternate of Red Hat Satellite Server 6.1 and 6.2. Apart from the content management katello can also perform provisioning and configuration task using foreman. In other words we can say Katello is the open source version of Red Hat Satellite Server which can push updates to its register Linux Servers or clients.

Following are the different components in Satellite Server :

• Katello – It manage all contents or repository and Software Development Life Management (SDLC )
• Foreman – It performs provisioning of physical and virtual servers using methods like kickstart and PXE, It also allows us to automate our tasks using puppet modules.
• Candlepin – It is a service within katello which is responsible for handling subscription management.
• Pulp – It is a service within the katello which handles repositories and it’s content
• Capsule Server –  It acts as proxy server for some of the katello services like repository storage, DNS, DHCP and Puppet server configurations

In this article we are going to install Katello 3.14 on CentOS 7.x Server. I am assuming minimal CentOS 7.x is already install on your system.

Beneath are the minimum recommendation for Katello Server :

• Minimum of 8 GB RAM
• Minimum 2 CPU Cores
•  20 GB in / file system
• Separate and maximum Size of /var/ because all the OS repositories will be synced under /var/lib/pulp, ideally allocate 30 GB space for each OS repositories. let’s assume i will sync repositories of three OS then size of /var would be 90 GB.

Installation Steps of Katello on CentOS 7 Step:1 Set Hostname and update the Server

Use the hostnamectl command to set the hostname

[[email protected] ~]# hostnamectl set-hostname "katello.example.com"

Update the /etc/hosts file in case you don’t have your own DNS Server

[[email protected] ~]# echo "192.168.1.12 katello.example.com" >> /etc/hosts

Use the below yum command to  update the server and then reboot

[[email protected] ~]# yum update -y ; reboot

Step:2 Set the firewall rules for katello

Run the below command to open the ports in OS firewall for katello setup.

[[email protected] ~]# firewall-cmd --permanent --add-port="80/tcp" --add-port="443/tcp" --add-port="5646/tcp" --add-port="5647/tcp" --add-port="5671/tcp" --add-port="5672/tcp"  --add-port="8140/tcp" --add-port="9090/tcp" --add-port="53/udp" --add-port="53/tcp"  --add-port="67/udp" --add-port="68/udp" --add-port="69/udp"

Step:3 Set the required repositories for katello

Run the beneath commands one after the other to set the required repositories for katello setup.

[[email protected] ~]# yum -y localinstall https://fedorapeople.org/groups/katello/releases/yum/3.14/katello/el7/x86_64/katello-repos-latest.rpm 
[[email protected] ~]# yum -y localinstall https://yum.theforeman.org/releases/1.24/el7/x86_64/foreman-release.rpm
[[email protected] ~]# yum -y localinstall http://yum.puppetlabs.com/puppet-release-el-7.noarch.rpm
[[email protected] ~]# yum -y localinstall https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm 
[[email protected] ~]# yum -y install foreman-release-scl

Now again update your system as we have added new repositories.

[[email protected] ~]# yum -y update

Step:4 Install Katello Package and start the installation

Run the following yum command to install katello packages.

[[email protected] ~]# yum -y install katello

Before starting the Installation , Sync Time of Your Server with NTP Server and set the time zone with respect to your location

[[email protected] ~]# timedatectl list-timezones  | grep -i Asia/Kol
Asia/Kolkata
[[email protected] ~]# timedatectl set-timezone "Asia/Kolkata"
[[email protected] ~]#
[[email protected] ~]# yum install chrony -y
[[email protected] ~]# chronyd -q 'server in.pool.ntp.org iburst'

Note: In case Chronyd service is already running then first stop the service and run above command to sync the time

Read Also : How to Sync Time in Linux Server using Chrony

Start the Katello Installation now using below foreman-installer command

[[email protected] ~]# foreman-installer --scenario katello --foreman-admin-username admin --foreman-admin-password <Specify_Password>

Once the Installation is completed , we will get output something like below :

Note : In case your server is running behind the proxy server then run the below command

[[email protected] ~]# foreman-installer --scenario katello --katello-proxy-url http://<Proxy-Server_Name_or_IP> --katello-proxy-port <Proxy-port> --foreman-admin-username admin --foreman-admin-password <Specify_Password>

Step:5 Access the Katello Admin Dashboard

Open the Web Browser and type the url 「https://katello.example.com/」 , Use the username as admin and password that we specify in the above step.

That’s all for this article. Please share your valuable feedback and Comments. Refer the below URL for downloading Yum Repositories and Register Clients for patching in Katello setup.

How to Download Yum Repositories and Register clients in Katello