XO changed master pool after host down

OskarNTT

Hi I have a problem
I have pool with 2 hosts with enable HA and shared storage
when i shut down master host for test.
HA work properly and restart vm on another host also master change from host 1 to 2 , but XO dont see anythink. its empty, not detect new master.
When i power on host 1 the XO detected pool and both host and i see the master are change and vm works properly.
Why XO cant connect to the new master when first host is down?

lawrencesystems

@OskarNTT

For HA to work properly you need 3 hosts.

https://xcp-ng.org/docs/ha.html#introduction

Danp

To bring back the XO functionality, you need to modify the settings under Settings > Servers so that it points to the new master host.

OskarNTT

@lawrencesystems said in XO changed master pool after host down:

@OskarNTT

For HA to work properly you need 3 hosts.

https://xcp-ng.org/docs/ha.html#introduction

Only what i see is a strongly recommended, not required

OskarNTT

@Danp Ok if i have more then 2 hosts in pool how can easy check who is the master to set ip in the settings?
And another question, now i have master host number 2 but setting server have host number 1 and it works now

Danp

xe pool-list will give you the UUID of the master host. xe host-list will give you the host name. You can use a combination of xe commands to get the name of the master host --

xe host-param-get param-name=name-label uuid=`xe pool-list | grep master | awk '{print $4}'`

Once you bring back up the old server, XO is smart enough to detect that it is no longer the master and will determine the correct host within the pool.