Hi!

I have been using Xen for nearly 10 years, now. I started with VirtualIron and changed over to Xenserver when Citrix closed VI.
My use-case is mostly a company-network of a mid-size-company.

I still think Xenserver/XCP-ng is one of the best platforms (thats why I became a sponsor). There are no very good alternatives.

• VMWare is only a good solution if you pay for the "large" Enterprise bundles
• Proxmox/oVirt is very limited
• HyperV is a Microsoft Product...

What I really like on Xenserver/XCP-ng is the possiblity to run the same Hypervisor with the same featureset on every test-server, production-cluster, and the possibility to live-migrate between pools.

Hi!

I was now able to solve both issues (thank you @livierlambert):

• Adding additional Management Interface:
  --> XOA - Host - Network - Change Type to "static"

• Moving Management Interface to Bond:
  --> XOA - Pool - Network - Create Bond with "old" single-Interface and another interface
  ----> IP is automatically reassigned to Bond

You can get the backups from the logs:

/rest/v0/backup/logs?fields=tasks

Just if somebody else is searching for the same thing, although it is not directly related to XOA:

If you want to get these alerts by mail and you are not using XCP-ng-Center, you can activate them with:

xe pool-param-set uuid=pool-uuid other-config:mail-destination=mail@example.com
xe pool-param-set uuid=pool-uuid other-config:ssmtp-mailhub=mailserverip:port

KPS

Hi!

I am using XOA on lates stable 5.98.1.
The "Performance-Plugin" seems to have a problem on the resolution of alerts:

First Mail: SR-fill >80%: iSCSI-SR1: 80.1% used
Resolution Mail: END OF ALERT: localstorage: 0.0% used

--> When iSCSI-SR1 did fall below 80% I received the mail about a totally different SR, that is currently empty

Are you having the same issue?

Regards
KPS

I do not think, there will be a "Veeam for XCP-ng". I think, we should hope and help to improve XOA.

My (constructive) critic points:

• Backup and restore speed should be higher
• Instant restore "pendant" is missing --> makes restore speed MORE critical
• No real "progressbar" on jobs!
• Maintenance-jobs not really visible at all (backup-merge!)

There is also one other thing, but I think, it can be handled mostly with additional agent-based-software:

• Application aware backups (active directory, sql, etc.)

--> So the main point is: You are currently not able to estimate the speed or progress of jobs until they are finished and you do not see maintence jobs

@ikade
I think, this can be handled. The downsides are the inefficient way to save the VMs, which can perhaps be minimized with ZFS storage for some compression, but it is working.

You really need an application aware backup with AD.

Option 1: Additional backup-software
Option 2: Combine Windows-Backup with XOA
--> A system-state-backup should be sufficient.
Option 3: Install a new DC

@ristis Oris
That's a "known issue":
https://xcp-ng.org/forum/topic/7827/xoa-does-not-refresh-quickly-status-of-nics

XCP-ng-center is showing the update.

@errao
There is another thread about bad performance of migrated VMs, where the main reason was/is, that the wrong template was active which did lead to a degraded performance.

@ustinB
When a browser is open for some days, the process is using more and more memory, until it reaches the memory limit. If nobody is logged in, that is happening much slower.
Currently, my limit is 8GB:

When that limit is reached, strange things begin to happen:

• API-requests are timing out
• Backup-jobs are failing
  ...until the process is restarted.

About the original question:

sessionCookieValidity = '12 hours'

should fit?

Hi!

I want to have an auto-logout in Xen-Orachestra. I can see, that logged-on sessions, that are lasting over days are filling the memory of the XOA VM, until issues are starting.

What I found in your git is:

 [authentication] 
 # Default to `maxTokenValidity` 
 #permanentCookieValidity = '30 days' 
  
 # Default to `undefined`, ie as long as the browser is not restarted 
 # 
 # https://developer.mozilla.org/fr/docs/Web/HTTP/Headers/Set-Cookie#Session_cookie 
 #sessionCookieValidity = '10 hours' 

...but I do not really understand the difference between permanentCookieValidity and sessionCookieValidity. Which one do I have to set, to force user logoffs after 12h, when a user does keep the browser open, when leaving the office?

Thank you for your help
KPS

You can easily add some firewall rules as an additional layer and/or restrict to ssh-forwarded sessions

Are there any UUIDs for a remote, that are saved in the meta-files on the remote?

Hi!

I am using XOA on lates stable 5.98.1.
The "Performance-Plugin" seems to have a problem on the resolution of alerts:

First Mail: SR-fill >80%: iSCSI-SR1: 80.1% used
Resolution Mail: END OF ALERT: localstorage: 0.0% used

--> When iSCSI-SR1 did fall below 80% I received the mail about a totally different SR, that is currently empty

Are you having the same issue?

Regards
KPS

@anp
Thank you!
There is an entry with (i am at least thinking) is reflecting the overall-status. It does not show, which part has failed, IF it has failed, but success should be success

@livierlambert said in Problem with differential restore:

No, because it's a planned feature. In short, XOA will act as an temporary SR so you can instantly start the backup VM, then migrate it to the target storage.

That’s great get InstantRestore!!!!

@livierlambert
I want to have the option to introduce ZFS snapshots of the remote if I want to restore from them as:

• They are immutable
• They can be sent offsite

So, I would add an „older version“ of RemoteA as RemoteB

@livierlambert
Thank you for your answer. IMHO there should be a log, as it is really hard to monitor.

You have to wait some minutes/hours for the short moment, when the VM starts up, until it is deleted. Only the restore status is logged

Hi!

I just did start my first "manual" health check of a restore-point.
The VM was imported and did start, but: Where can I find the result of the check?

• As it was not part of a scheduler, i did not get a mail
• Backup-Restores does just show the import, but nothing about the health check
• Overview does only show backup/mirror/replication-jobs

Thank you for your help
KPS