Applying OS Updates¶
Ubuntu OS updates are released with bug and security fixes on a steady basis. CML deployments which are able to access these updates online are encouraged to apply them whenever they are released. These updates are applied at the latest whenever you follow the steps of Upgrading to New Version.
Deployments which cannot access Ubuntu OS updates directly can refer to documentation at Proxied, Air-gapped and Offline Environments for alternative options on how to apply these updates.
Procedure
Log into the System Administration Cockpit as the system administrator account. See Logging into the System Administration Cockpit.
In the System Administration Cockpit, click Services in the navigation bar on the left side of the page.
On the Services page, click the Targets tab at the top of the page.
Scroll to the bottom of the pane in the System Administration Cockpit and click virl2.target.
The System Administration Cockpit will switch to the Services > virl2.target page.
Click on the services menu (the three vertical dots at the end of the CML2 Network Simulation System line).
A menu appears with actions related to the current service target.
Click Stop in the menu to stop the services for this target.
The Status will change to Not Running once the services stop. You can now apply the system’s software updates.
In the System Administration Cockpit, click Software Updates in the navigation bar on the left side of the page.
Once the page refreshes the package list, click the Install All Updates button.
This step may take several minutes to several hours to complete, depending on the speed of your network and the selected Ubuntu Linux package mirror.
The system updates are complete, and your CML server is running the latest packages. If the system requires a reboot after the updates are complete, the page will provide a Restart Now button. If you do not have to reboot after the Software Updates are complete, then be sure to restart the virl2.target.
If a reboot is recommended, click the Restart Now button to restart your CML server.
Your system will reboot, and the virl2.target should start automatically.
Restarting virl2.target - skip these steps if a reboot was required
If a reboot was not required, navigate to in the System Administration Cockpit once the system updates are complete.
The System Administration Cockpit will switch to the Services > virl2.target page.
Click on the services menu (the three vertical dots at the end of the CML2 Network Simulation System line).
A menu appears with actions related to the current service target.
Click Start in the menu to start the services for this target.
The Status will change to Active or Running once the services start.
On a Cluster installation, you need to apply OS package updates for each compute host separately. Switch to each compute host in turn and repeat the OS package update steps.