topic Re: Cannot create cluster on the HPE VM Essentials in HPE Morpheus VM Essentials

Cannot create cluster on the HPE VM Essentials

tungxp — Thu, 30 Oct 2025 03:31:29 GMT

Hi all,

We try to create cluster but it always stuck failed. We have 3 x HPE DL380 Gen 12 nodes.

This below is cluster configure first:

We tried to follow this guide on 3 server:

1. Remove original symlink: rm -f /etc/resolv.conf
2. Create new symmlink: ln -s /run/systemd/resolve/resolv.conf
/etc/resolv.conf
3. Check if the linking worked: ls -l /etc/resolv.conf

lrwxrwxrwx 1 root root 32 Oct 29 20:46 /etc/resolv.conf -> /run/systemd/resolve/resolv.conf

But the results always show failed on server vir-host-01 first, then server vir-host-02 and vir-host-03 hang at "Run Script Pacemaker Configuration" step for along time before become failed too.

Please help us.

Thank you

Re: Cannot create cluster on the HPE VM Essentials

dya — Thu, 30 Oct 2025 09:03:53 GMT

When creating the cluster, you've specified “mgmt” for the “MANAGED NET INTERFACE”. Would specifying the same interface used during the manager deployment resolve the issue?

Re: Cannot create cluster on the HPE VM Essentials

tungxp — Thu, 30 Oct 2025 14:57:15 GMT

We found that mtu between servers in cluster is 9000, so those servers couldn't ssh to each other. We change to 1500, so every thing is OK now.

Thank you for your help.

Re: Cannot create cluster on the HPE VM Essentials

Arnout_Verbeken — Sat, 01 Nov 2025 14:49:56 GMT

Please mark this thread as solved.

Thanks!