How to upgrade Management Center (MC) devices in failover setup.
Step 1 - Disable Failover and confirm on both devices.
Primary Management center:
Management Center# failover disable
Management Center# failover view
Backup Management center:
Management Center# failover disable
Management Center# failover view
Step 2 - If the system image is hosted on a local HTTP server, then HTTP access needs to be enable on MC.
Management Center# security http enable
HTTP access enabled
Step 3 - Upload the system image to MC that is stored on a local server. To upgrade using system image from MC itself, please refer to the following article: Article 169551
Management Center# installed-systems add http://<path-to-file>.bcsi
Step 4 - Once installed, a restart reboot will load the new system image.
Management Center# restart reboot
Step 5 - Restore Failover on both MC devices.
Primary Management center:
Management Center# failover make-primary
Management Center# failover view
Backup Management center:
Management Center# failover make-secondary
Management Center# failover view