Installing container platform (Docker, Podman)

Table: Installing container platform

Platform	Description
Docker on Ubuntu	Supported version: Docker 18.09 and later For detailed instructions on installing the Docker on Ubuntu, see Install Docker Engine on Ubuntu.
Podman on RHEL 9, 8.x Podman on OEL 9 and 8.8	Supported version: Podman 4.0.2 and later If NetBackup Snapshot Manager is being deployed in the AWS cloud, ensure that you enable the extra repos: # sudo yum-config-manager --enable rhui-REGION-rhel-server-extras Ensure that the following services are enabled and running: # systemctl enable podman-restart # systemctl start podman-restart # systemctl enable podman.socket # systemctl start podman.socket If NetBackup Snapshot Manager is being deployed in OCI cloud: If SELinux is enabled, change the mode to permissive mode. Edit the `/etc/selinux/config` configuration file, and change the value of the SELINUX parameter to SELINUX=permissive. Restart the system for the changes to take effect. Verify the SELinux mode change using the following command: # sudo sestatus The Current Mode parameter value in the command output should appear as permissive.

Platform

Description

Docker on Ubuntu

Supported version: Docker 18.09 and later

For detailed instructions on installing the Docker on Ubuntu, see Install Docker Engine on Ubuntu.

Podman on RHEL 9, 8.x

Podman on OEL 9 and 8.8

Supported version: Podman 4.0.2 and later

If NetBackup Snapshot Manager is being deployed in the AWS cloud, ensure that you enable the extra repos:

# sudo yum-config-manager --enable rhui-REGION-rhel-server-extras

Ensure that the following services are enabled and running:

# systemctl enable podman-restart

# systemctl start podman-restart

# systemctl enable podman.socket

# systemctl start podman.socket

If NetBackup Snapshot Manager is being deployed in OCI cloud:

If SELinux is enabled, change the mode to permissive mode.
Edit the /etc/selinux/config configuration file, and change the value of the SELINUX parameter to SELINUX=permissive.
Restart the system for the changes to take effect.
Verify the SELinux mode change using the following command:
```
# sudo sestatus
```
The Current Mode parameter value in the command output should appear as permissive.

Configuring Podman num_locks

If you use Podman as the container runtime, configure the num_locks parameter to support the expected workload and avoid container lock exhaustion issues.

For information about the num_locks setting, refer to the Red Hat article: Why is podman exec failing with the error message "exceeded num_locks (2048)" in Red Hat Enterprise Linux?

The following table lists the recommended num_locks values:

Table: Recommended values for num_locks

Deployment size	Maximum concurrent jobs	Recommended num_locs
Small	≤ 50	2048 (default)
Medium	50-200	4096
Large (for example, 672 GB RAM and 96 CPUs)	~480	4096
Very high container churn or large numbers of stopped containers	Any	8192

Caution:

Set the num_locks value before installing NetBackup Snapshot Manager for Cloud to ensure adequate capacity for the expected workload.

Installing container platform (Docker, Podman)

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