Offline installation

To be able to install Centreon on servers with no internet access, create a local copy of the Centreon repository on a server that has an internet access, then make your offline Centreon servers point to it.

Creating a local copy of the Centreon repository

1. Install the repository on your mirror server.

Alma / RHEL / Oracle Linux 8

dnf install -y dnf-plugins-core
dnf config-manager --add-repo https://packages.centreon.com/rpm-standard/23.04/el8/centreon-23.04.repo
dnf clean all --enablerepo=*
dnf update

Then retrieve the gpg key for the packages:

rpm --import https://yum-gpg.centreon.com/RPM-GPG-KEY-CES

Alma / RHEL / Oracle Linux 9

dnf install -y dnf-plugins-core
dnf config-manager --add-repo https://packages.centreon.com/rpm-standard/23.04/el9/centreon-23.04.repo
dnf clean all --enablerepo=*
dnf update

Then retrieve the gpg key for the packages:

rpm --import https://yum-gpg.centreon.com/RPM-GPG-KEY-CES

Debian 11

To install the Centreon repository, execute the following command:

echo "deb https://packages.centreon.com/apt-standard-23.04-stable/ $(lsb_release -sc) main" | tee /etc/apt/sources.list.d/centreon.list
echo "deb https://packages.centreon.com/apt-plugins-stable/ $(lsb_release -sc) main" | tee /etc/apt/sources.list.d/centreon-plugins.list

Then import the repository key:

wget -O- https://apt-key.centreon.com | gpg --dearmor | tee /etc/apt/trusted.gpg.d/centreon.gpg > /dev/null 2>&1
apt update

2. Create a directory for the local repository:

   mkdir -p /var/www/html/repos/centreon

3. Install the required packages:

   yum install yum-utils createrepo httpd

4. Synchronize the repositories:

   reposync -p /var/www/html/repos/centreon/ -r centreon-stable-noarch
   reposync -p /var/www/html/repos/centreon/ -r centreon-stable

5. Create the repository:

   createrepo /var/www/html/repos/centreon/

6. Start the web server:

   service httpd start

7. On your Centreon server, edit the following file:

   vi /etc/yum.repos.d/centreon.repo

   Add the following lines:

   [centreon]
   name=centreon
   baseurl=http://<mirror_ip_address>/repos/centreon
   gpgcheck=1
   enabled=1

   Replace <mirror_ip_address> by the actual address of your local repository.

Keeping your local repository up-to-date

To synchronize regularly your mirror with the Centreon repository, create a cron file:

cd  /var/spool/cron
crontab -e

The following commands will schedule a synchronization every day at 2 for the centreon-stable-noarch repository, and every day at 3 for the centreon-stable repository :

* 2 * * * reposync -p /var/www/html/repos/centreon/ -r centreon-stable-noarch
* 3 * * * reposync -p /var/www/html/repos/centreon/ -r centreon-stable