Before you begin migrating Snapshot Manager
Make sure that you complete the following before installing Snapshot Manager:
Ensure that your environment meets system requirements.
Create the instance on which you install Snapshot Manager or prepare the physical host.
See Verifying that specific ports are open on the instance or physical host.
See Creating an instance or preparing the host to install Snapshot Manager.
Prepare a RHEL 8.6 or 8.4 host for installation. You can either upgrade your existing RHEL 7.x OS to RHEL 8.6 or 8.4 OS, or create a new system with RHEL 8.6 or 8.4.
For upgrading the system from RHEL 7.x to RHEL 8.6 or 8.4, follow the Red Hat documentation.
For creating a new system with RHEL 8.6 or 8.4, configure a Podman container platform
See Table: Installing container platform.
The brief steps include:
Setup the RHEL repos
For AWS cloud, enable the extra repos
# sudo yum-config-manager --enable rhui-REGION-rhel-server-extras
For on-premise, enable your subscriptions:
# sudo subscription-manager register --auto-attach --username=<username> --password=<password>
Install Podman if required:
# sudo yum install -y podman
If SELinux is enabled, change the mode to permissive mode and restart the system.
Edit the
/etc/selinux/configconfiguration file and modify theSELINUXparameter value toSELINUX=permissive.
Run the following commands to install the required packages (
lvm2,udevanddnsmaq) on the hosts:#yum install -y lvm2-<version>
#yum install -y lvm2-libs-<version>
#yum install -y python3-pyudev-<version>
#yum install -y systemd-udev-<version>
#yum install -y podman-plugins
Run the following commands to lock the Podman and Conmon versions to the supported versions, so that they do not get updated with the yum update:
sudo yum install -y podman-2.2.1-7.module+el8.3.1+9857+68fb1526
sudo yum install -y python3-dnf-plugin-versionlock
Verify that specific ports are open on the instance or physical host.
Next, you migrate Snapshot Manager from the RHEL 7.x host to the newly prepared RHEL 8.6 or 8.4 host.
See Migrate and upgrade Snapshot Manager on RHEL 8.6 or 8.4.