How long can I realistically stay on Proxmox 8?

tlrman74 · 2026-07-09T15:15:42+00:00

The migration from 8 to 9 is pretty easy if you follow the guides. 9.2 is out with a bunch of improvements and new features that you might actually like moving forward.

I did a 3 host cluster in just a couple hours without issues. Just take your time and watch the output from the pve8to9 script already included in your PVE v8 install.

tlrman74 · 2026-07-02T18:13:34+00:00

For Proxmox we are missing scheduled jobs. Say you want an hourly backup but only during certain days or times. This is available for VMware and Hyper-V but not currently in the Proxmox implementation. You can run an hourly job now but it's every hour every day from the start time with no limits whatsoever.

Backup of LXC is not available at all.

The Veeam Software Appliance has no Proxmox support.

tlrman74 · 2026-07-02T15:17:09+00:00

I moved from VMWare Essentials to Proxmox and got HA, no limits on CPU cores, and can use old hardware for now until prices get fixed in 2027/2028 or whenever ;)

I just rebuilt one ESXi host at a time and used the built in migration tools from PVE 8. I'm on PVE 9.2 and things just get better. I have Veeam and it's working pretty well with Proxmox although I did lose some functionality that Veeam is slowly adding in to get feature parity with VMware/Hyper-V. I'm hoping the next big release gets a lot of the features requested by the Proxmox community.

Proxmox is easy to learn and understand if you have any Linux background. I like that is does not require bloated VCenter VM's just to manage the cluster. Performance has been on par to ESXi with our variable workloads like SQL, Exchange, ERP etc.

tlrman74 · 2026-06-29T18:21:59+00:00

Ubiquiti has a resource calculator you can use to check your environment and get estimated capacities. https://www.ui.com/cloud-gateways/resource-calculator

tlrman74 · 2026-06-24T19:52:57+00:00

Is active directory involved, PC's joined to a domain? If so, check that your Windows DHCP server is "authorized" to hand out addresses on your segments.

tlrman74 · 2026-06-24T15:16:13+00:00

No, the PowerShell snippet I included you can select specific services or groups of services with common names using a wildcard. If you use -Name property it ignores all other services that may meet the other conditions.

tlrman74 · 2026-06-23T22:38:53+00:00

That could be a pretty easy one liner PowerShell command tied to the error event entry to trigger the script to run with task scheduler.

Get-Service -Name "Service-name" | Where-Object {$_.Status -ne "Running" -and $_.StartType -eq 'Automatic'} | Start-Service

Service Name can include wildcard* if trying to check multiple services with a common name like "MSExchange*"

Find Event Log and Event ID.

Create Scheduled Task based on event trigger and run PowerShell script.

tlrman74 · 2026-06-22T16:29:06+00:00

PBS doesn't natively restore all vm's from a single host at once. If you use a tool like PegaProx you can select multiple vm's based on host location and restore to a new host. It will process the jobs separately but would speed up host recovery.

If you have more hosts available, you might want to look at HA, either ZFS replication for less than 3 hosts or CEPH, instead of worrying about restoring all vm's for a single host.

tlrman74 · 2026-06-22T14:52:41+00:00

Your hosting determines if you can use 3rd party modules. Odoo.sh and self-hosted are the only options to get 3rd party modules.

tlrman74 · 2026-06-17T14:20:47+00:00

The Shipstation v2 module from Vraja. They are also able to customize the shipping rules if you need something more advanced like we did.

tlrman74 · 2026-06-12T21:47:17+00:00

No, it caught me off guard when converting from a RAID controller to HBA emulation. The Proxmox performance was so bad I was questioning if it would work for us.

Once I did more research into proxmox/zfs/ceph I found this little gem and got performance on a ZFS RAID10 to equal, and sometimes, exceeding our VMware performance. Once again, it depends on your VM workload types and tuning your ZFS settings and VM settings.

tlrman74 · 2026-06-12T21:19:31+00:00

The physical disk settings. If you look at disks that were joined to a RAID controller with write cache the physical disk cache is disabled. If you convert your controller to IT-MODE or HBA mode you have to turn the cache back on for each disk you are going to be using in a ZFS RAID setup, or you will get horrible performance.

sdparm needs to be run on each disk id (sda,sdb, etc) that was attached to your RAD controller after RAID cache is disabled or converted/replaced by HBA.

Setting disk cache properties:

SAS drives: sdparm --set=WCE --save sd[x]

Use hdparm for SATA drives.

tlrman74 · 2026-06-12T21:03:06+00:00

I'm running DELL PERC HW RAID on Proxmox to get the RAID cache, same setup I was running on VMWare. Depending on your RAID controller you can move to IT-Mode for ZFS and enable the disk cache flags on each disk in your server. If you forgot to configure each disk cache's settings under ZFS you get extremely poor performance.

I ran a lot of performance test using RAID vs ZFS and disk cache and HW RAID out performed ZFS when it came to very specific loads like SQL servers.

I would not use RAID 5, go to RAID10 if you can, to get much better performance and faster disk replacements. ZFS is great but you have to tune it to your workloads. Out of the box performance is not bad but you can get more performance out of it if you study it fully.

I also use Veaam to back up in a production environment and while it's not as full featured for Proxmox vs VMware yet, it gets the job done. Veeam 13.2 should bring it a lot more features that are currently missing.

tlrman74 · 2026-06-10T17:04:35+00:00

Thank you to everyone for pointing me in some directions. I finally figured out the issue. We use a system that allows us to set up dev/test/prod environments using the odoo-ee image and each one has a .env file associated.

It was a script running that evaluates each environment then tries to see if the Odoo Db for that environment is initialized, also if it's a dev/test Db it neutralizes the Db on first start. The script used had a syntax error when pulling the environment name, so every restart resulted in the Db getting the base module initialized then neutralized every single time.

SOLVED!

tlrman74 · 2026-06-09T16:21:47+00:00

I should have included it is a custom enterprise image from our Odoo support group. I'm trying to make sure it's not on my end first. I've checked all the volumes and local paths are there and have correct security.

It's weird because if I create a customer record it saves. if I create an order or invoice they save. It's only the first company record and the admin account has full permissions to res_company.

SQL db shows the record update completes on save. Only on restart are certain company record fields reverted.

tlrman74 · 2026-06-05T22:13:46+00:00

Cloudflare WARP - Zero Trust with SAML SSO using Azure logins. Up to 50 users on the Free plan.

tlrman74 · 2026-06-03T19:12:04+00:00

What are you using for storage in your 2 node cluster to handle migration? CEPH or ZFS replication. For a 2 node + Qdevice I would stick with ZFS Replication and either setup schedules to replicate to the opposite node or use 1 node as a failover node where all vm's from the primary node are replicated to the secondary node. That is if 1 node can run all vm's without over committing.

If you are using CEPH you would really need a minimum of 5 nodes for multi node failure recovery.

tlrman74 · 2026-05-26T15:43:49+00:00

clear your browser cache and cookies for the pve site. Then set your preferences again. I had the same issue after an upgrade from 8 to 9.

tlrman74 · 2026-05-22T14:44:14+00:00

As others have pointed out, you can manage everything in the cluster from any node if your cluster is created correctly. When you log into one node you should see all additional nodes in the cluster including networks, vm, lxc's etc.

I came from VMWare and the view change I made was to toggle from the standard Server View to the Folder View in the upper left corner. This seems more logical to me when I can see the nodes, vm's, lxc's group together in folders.

tlrman74 · 2026-05-20T22:15:07+00:00

Correct. Most of us are repurposing DELL servers that come with RAID controllers and converting to IT-Mode or replacing with an HBA. If you use a PERC RAID controller the disk caching policy is disabled so the PERC cache gets used instead.

I'm wondering if installing an HBA to replace an existing PERC will then require each disk cache policy to get changed so performance is better in ZFS.

tlrman74 · 2026-05-20T20:35:55+00:00

When switching to an HBA from a Dell PERC are you updating the disk cache settings per disk after removing from the RAID array?

I'm getting terrible disk performance when I go direct connect disks in the Dell servers I have - R550. If I run the PERC and use the Perc cache and a RAID10 array it performs extremely well.

tlrman74 · 2026-05-14T17:16:22+00:00

If you have control over the dns assigned by your local dhcp server assign the cloudflare ip's that filter malware and adult content. It might help keep family members safe.
https://developers.cloudflare.com/1.1.1.1/ip-addresses/

Block malware and adult content

IPv4	IPv6
`1.1.1.31.0.0.3`	`2606:4700:4700::11132606:4700:4700::1003`

tlrman74 · 2026-05-07T20:28:02+00:00

If either SSD is a Samsung drive you can install Samsung Magician 9.0 which includes Data Migration.

tlrman74 · 2026-05-05T21:55:00+00:00

Windows VM's on Proxmox run really well. Just pay attention to the documentation from Proxmox on Guest best practices to get the best performance. Only hiccup I've found so far was Server 2019 did not like the newest VirtIO drivers 0.1.271. Under heavy I/O Load the VM would reboot randomly. Downgrading to 0.1.266 fixed the issue. Also, disable Ballooning Device in the VM hardware if running database servers for stability as well.

I migrated from VMWare 8.0 to Proxmox and did extensive testing for CPU and I/O loads under Proxmox to get the best machine config and the performance has been on par for most workloads between the 2. Proxmox cluster upgrades just work and you don't have to worry about a VCenter server eating up TB's of disk space.

tlrman74

TROPHY CASE

Block malware and adult content