Alert when trying to reboot/halt the pool master XS

[fufroma]

xo-server 5.1.6 / xo-web 5.1.9

When you restart the "main" server of a pool (aka "the one configured on the /#/settings/servers ), it seem like some feature does not work anymore until the reboot is complete.

There should be an alert on dangerous action for this server (like reboot or halt).

Can be related to #1407

[olivierlambert]

What's the behavior of XenCenter in this case?

[fufroma]

As I remember (but I may be wrong), XenCenter use the first host of the pool to have a (hidden) list of each host of the pool.
If the main XS is lost, XenCenter will attemp each one of the known server of this pool until it manage to find one working.

[olivierlambert]

But you can't connect to a pool slave, it will redirect you to the master IP (which is down the time to reboot)

[fufroma]

About the initial issue:
XenCenter behaviour:

• trying to reboot the master with XC: Ok, instant disconnect of the pool. Can't connect to the pool until you manage to start this server again.
• trying to halt the master with XC: Ok, instant disconnect of the pool. Can't connect to the pool until you manage to start this server again.

I was wrong about the XC behaviour connecting to other hosts, my bad.

Anyway, XO should prevent user to halt or reboot the pool master.

[olivierlambert]

You could need to do it. Maybe display a better warning would be a good idea.

[fufroma]

Totally, I explained poorly.

[olivierlambert]

I just updated the text, nothing fancy but at least it's displayed.