HCP System Management Help
The table below outlines what happens when the primary system for an active/passive link fails.
Step | What you do | What happens |
---|---|---|
Primary system fails | ||
1 |
On the replica, fail over the link |
Applicable tenants and directories on the replica become read-write; applicable tenants and directories on the primary system either remain read-write or become read-only depending on whether the two systems can communicate with each other; if DNS failover is enabled, the replica broadcasts new DNS configuration |
2 |
If DNS failover is disabled, direct clients to write only to the replica |
|
Primary system comes back online |
||
3 |
If the primary system has been rebuilt: •On the primary system, upload the replication SSL server certificate from the replica •On the replica, upload the replication SSL server certificate from the primary system |
|
4 |
On the replica, update the link configuration as needed |
|
5 |
If the link is broken, on the replica, send a request to restore the link |
For a cross-release link, pending link request appears on the primary system Otherwise, replication link is recreated |
6 |
For a cross-release link, on the primary system, accept the restored link |
For a cross-release link, replication link is recreated |
7 |
On the replica, begin data recovery |
Applicable tenants and directories on the replica remain read-write; applicable tenants and directories on the primary system remain or become read-only; data recovery from the replica to the primary system begins |
8 |
Wait for data recovery to come close to being up to date |
|
9 |
On the replica, complete data recovery |
Applicable tenants and directories on the replica become read-only; applicable tenants and directories on the primary system remain read-only; data recovery from the replica to the primary system continues to completion |
Data recovery finishes | ||
10 | Nothing |
Applicable tenants and directories on the replica remain read-only; applicable tenants and directories on the primary system become read-write; the primary system and the replica broadcast original DNS configurations; replication from the primary system to the replica restarts |
11 |
If DNS failover is disabled, after you see this message in the system log, direct clients to write only to the primary system: Replication data recovery completed |
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