...
It is a requirement that the devices collected from the poller are the same than the mirror.
Discoveries
What
...
happens when we discover a poller?
- The first time we discover a poller, all the nodes are copied into the masterprimary. But once they have been copied, in the synchronisations the node configuration will be sent from the master primary to the poller.
- The server will be set up as a poller, so we are not gonna be able to edit the nodes from the poller.
What
...
happens when we discover a mirror?
- The first time we discover a mirror, it needs to be empty (Except for localhost). This is because, all nodes needs to be copied from the poller that is being mirrored.
- The nodes will be sent to the mirror, the mirror will start polling those devices, at the same time as the poller.
- But the data won't be synchronised, unless the poller is disabled/down.
- The server will be set up as a mirror, so we are not going to be able to edit the nodes from the mirror.
- Every time we make a change into the poller nodes from the masterprimary, they will be replicated to the mirror.
...
The mirror will become the poller.
What happens when we discover a mirror?
We can update the role before removing the poller. If not, we are not going to be able to manage the nodes. We can do this manually by setting opha_role in conf/opCommon.json and restarting the server.
...
- If the role is a mirror, needs to have a mirror associated.
- The mirror associated should exist.
- Mirror and poller should not be "Active" at the same time.
- "Active" is set internally in the system and is a flag for the poller and the mirror. But does not need to be set in poller with no mirror.
- For mirror and poller: The active one should show the number of data, none for the other.
- The mirror doesn't have to have Nodes in the report. These nodes are counted from the master primary database. But, the remote should have the same nodes that the poller has.
...