Symptoms

lcm-web.log shows a timeout during the pre-migration health check. 2023-05-07 04:49:37,474 INFO [SURROGATE] [upgrade-task-0] c.v.l.c.u.v.h.VxRailMgrOvaUpgradeHelperService [VxRailMgrOvaUpgradeHelperService.java:192] rename the new vxm to VxRail_Manager(New)-168343 4977474 2023-05-07 04:49:38,005 ERROR [SURROGATE] [lcm-core-0] c.v.l.t.SimpleUpgradeTaskExecutor [SimpleUpgradeTaskExecutor.java:82] Failed to execute task PreMigrateConfigurationTask. java.util.concurrent.ExecutionException: com.vce.lcm.exception.LCMException: OVA file pre-migration health check failed with timeout. 2023-05-07 04:09:28,831 ERROR [8876 MainThread] execute_command:46 - error output is :ssh: connect to host fe80::250:xxx:xxxx:xxxx%eth0 port 22: Cannot assign requested address 2023-05-07 04:09:28,831 INFO [8876 MainThread] 7259326078362729906:199 - ova health check failed: Fail to execute: ssh: connect to host fe80::250:xxxx:xxxx:xxxx%eth0 port 22: Cannot assign requested address , waiting...

Cause

Source VxRM VM was found with ipv6 settings disabled. 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 00:0c:29:xx:xx:xx brd ff:ff:ff:ff:ff:ff inet 192.168.xxx.xx/26 brd 192.168.xxx.xx scope global eth0 valid_lft forever preferred_lft forever 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 00:0c:29:xx:xx:xx brd ff:ff:ff:ff:ff:ff -- This can be validated by printing the disable_ipv6 from each of the ethernets. vxrm:/home/mystic # cat /proc/sys/net/ipv6/conf/eth0/disable_ipv6 1 vxrm:/home/mystic # cat /proc/sys/net/ipv6/conf/eth1/disable_ipv6 1

Resolution

Take a snapshot of VxRail Manager.Edit /etc/sysctl.conf and comment the following line by adding:net.ipv6.conf.all.disable_ipv6 = 1Restart the network service: service network restartCheck if the interfaces got ipv6 addressesip aValue should be 0 now:cat /proc/sys/net/ipv6/conf/eth0/disable_ipv6cat /proc/sys/net/ipv6/conf/eth1/disable_ipv6Retry the upgrade and make it moves past the failure point.

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