If you obtain patch information from the following sources, upgrade the patch according to actual requirements.
- You obtain information about the patch released by MRS from a message pushed by the message center service.
- You obtain information about the patch by accessing the cluster and viewing patch information.
Preparing for Patch Installation
- Follow instructions in Performing a Health Check to check cluster status. If the cluster health status is normal, install a patch.
- You need to confirm the target patch to be installed according to the patch information in the patch content.
Installing a Patch
- Log in to the MRS console.
- Choose Clusters > Active Clusters and click the name of the cluster to be queried to enter the page displaying the cluster's basic information.
- On the Patches tab page, click Install in the Operation column to install the target patch.
- Clusters of versions later than MRS 1.7.2 support rolling patch installation. For details, see Rolling Patches.
- For the isolated host nodes in the cluster, follow instructions in Restoring Patches for the Isolated Hosts to restore the patch.
Uninstalling a Patch
- Log in to the MRS console.
- Choose Clusters > Active Clusters and click the name of the cluster to be queried to enter the page displaying the cluster's basic information.
- On the Patches page, click Uninstall in the Operation column to uninstall the target patch.
- Clusters of versions later than MRS 1.7.2 support rolling patch installation. For details, see Rolling Patches.
- For the isolated host nodes in the cluster, follow instructions in Restoring Patches for the Isolated Hosts to restore the patch.