Unable to enable High Availability - INTERNAL_ERROR(Not_found)

olivierlambert

Hi,

This is weird indeed. Do you have a shared SR available/connected? Can you try to enable HA with xe CLI directly from the host?

jmannik

@olivierlambert

[18:15 vmhost13 ~]# xe pool-ha-enable heartbeat-sr-uuids=381caeb2-5ad9-8924-365d-4b130c67c064
The server failed to handle your request, due to an internal error. The given message may give details useful for debugging the problem.
message: Not_found

olivierlambert

That's weird. Ping @Team-XAPI-Network and maybe directly @psafont

andriy.sultanov

@jmannik Please upload your /var/log/xensource.log from the time of the error, otherwise it's hard to see what went wrong

psafont

@jmannik said in Unable to enable High Availability - INTERNAL_ERROR(Not_found):

@olivierlambert

[18:15 vmhost13 ~]# xe pool-ha-enable heartbeat-sr-uuids=381caeb2-5ad9-8924-365d-4b130c67c064
The server failed to handle your request, due to an internal error. The given message may give details useful for debugging the problem.
message: Not_found

That message is created by an exception. It's commonly raised by List.find and List.assoc, in this case the exception wasn't caught.

It's usually difficult to find out which one, since these functions are frequently used and catching the exception can happen in a caller of the function that uses it.

Could you provide the xenserver.log, as Andriy has asked? Otherwise I don't think we'll be able to find the exact cause.

jmannik

@andriy.sultanov @psafont
https://drive.google.com/file/d/1aJyCYSAuRIBb0X-23gJ6ORtrHSciYH8a/view?usp=sharing
Here is the log file

psafont

@jmannik said in Unable to enable High Availability - INTERNAL_ERROR(Not_found):

@andriy.sultanov @psafont
https://drive.google.com/file/d/1aJyCYSAuRIBb0X-23gJ6ORtrHSciYH8a/view?usp=sharing
Here is the log file

It's not crystal clear the condition that causes the exception, but I can see some unprotected exception being raised in that path host.ha_join_liveset when trying to recover the host uuid and it's not found. I'll investigate

psafont

@jmannik I have a test build that you can test, it will hopefully provide better error messages by raising an internal error with a reason.

The code is based on the newest builds, so I recommend updating to the latest version of XCP beforehand:

yum update
reboot

Once that is done, the test packages can be installed by creating the file /etc/yum.repos.d/xcp-test.repo:

[xcp-ng-psafont1]
name=xcp-ng-psafont1
baseurl=https://koji.xcp-ng.org/repos/user/8/8.3/psafont1/x86_64/
enabled=0
gpgcheck=1
repo_gpgcheck=1
metadata_expire=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-xcpng

then updating the host using the test developer repo

yum update --enablerepo=xcp-ng-psafont1

and finally restarting all the daemons

xe-toolstack-restart

Note: the repository will only be available for a limited amount of time, after which I will repurpose it and delete the instructions so it's not used anymore by accident.

tjkreidl

Note also that if HA is turned on or off, the host must be restarted for that change to take effect, if I recall correctly.

jmannik

@tjkreidl This hasn't been my experience so far, enabling HA has just enabled HA, no reboot needed.

@psafont I am patching all my hosts now, will do the above test packages on Sunday Night (it is Friday afternoon at the time of this post)

nikade

@jmannik said in Unable to enable High Availability - INTERNAL_ERROR(Not_found):

@tjkreidl This hasn't been my experience so far, enabling HA has just enabled HA, no reboot needed.

@psafont I am patching all my hosts now, will do the above test packages on Sunday Night (it is Friday afternoon at the time of this post)

Correct, no reboot needed to enable/disable HA.