XO New Pool Master

piotrlotr1

Hello!

So it looks like after bringing master down, HA election of new one takes place however XOA is not aware of it.

Is there a way to point XOA to new master?

To check which host is the new master I've logged via SSH to one of the slaves and did below.

[05:40 phx01xcp03 ~]# xe pool-list
uuid ( RO)                : 03e8733b-fbd0-61c9-3850-353bfd9e3149
          name-label ( RW): Pool_01
    name-description ( RW):
              master ( RO): a65dcfcb-8a60-4aa8-a467-2351140f80d4
          default-SR ( RW): <not in database>

Which shows UUID of newly elected master.

[05:52 phx01xcp03 ~]# xe host-list uuid=a65dcfcb-8a60-4aa8-a467-2351140f80d4
uuid ( RO)                : a65dcfcb-8a60-4aa8-a467-2351140f80d4
          name-label ( RW): hidden_label
    name-description ( RW): Default install

Not sure why default-SR has "<not in database>" status.

olivierlambert

If you connect to any slave, XO will be redirected to the new master.

piotrlotr1

@olivierlambert
Well, that worked.

But... after bringing back the old master (without reinstallation or anything) XOA sees it as master HOWEVER xe pool-list sees as a master different host.

olivierlambert

Please refresh, or disconnect/reconnect, it should be sync between the 2.

piotrlotr1

@olivierlambert
That worked, thank you.

Next thing is that every time I hit "Detach" on any host, it jumps into "Settings -> Servers" with the same name as the host which currently is an master.

So right now I have on my "Servers" list below situation.

All three hosts have the same "Label".

When I add them back to the pool everything goes back to normal.

I'm able to rename those without any issue but is it some kind of a bug or expected feature?

DustinB

@piotrlotr1 A host can only be a part of a single pool at one time, so when you add your new master to XO, the other hosts in the same pool will disappear from the XO hosts page.

That is expected behavior

piotrlotr1

@DustinB No, no... look at the "Label" column.

The question is - why after detaching hosts from pool, they all have "Label" the same as pool master?

DustinB

@piotrlotr1 said in XO New Pool Master:

@DustinB No, no... look at the "Label" column.

The question is - why after detaching hosts from pool, they all have "Label" the same as pool master?

All of these hosts are in different pools, the individual host name is moot once joined to a pool (at least it appears to be).

Are you unable to rename the hosts to something else?

piotrlotr1

@DustinB They were named as in column "Pool" at the very beginning - before adding them to pool.

Again, the question is why after detaching, the "Label" column shows three exactly the same names? I can rename them, but that's not the point.

I'm asking if the same "Labels" can be somehow explained...

It looks like after detaching slave host from the pool it inherits master name as a label - that doesn't look correct.

Greg_E

@piotrlotr1

I think my original mini-lab did this, I had mistakenly joined these hosts to the big lab pool, found out is was wrong and detached them to make a mini-lab pool. There were some oddities when I did this, but I just worked past them and created their own pool and did my warm migrations. Wish I had taken better notes of this when I did it.

I wiped and rebuilt my mini-lab now, so no going back.