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Found the solution here: https://forum.proxmox.com/threads/change-helo-hostname.52582/post-436135

Still having a problem with the hostname: its kind of expected. But how can it be solved if there was multiple different iredmail server which serve different domains?

I got it fixed. On iRedMail "mynetworks" was set to "127.0.0.2" now with the local network set it looks like its working.

I am not sure where this is coming from. Is my bet correct its coming for the mail Server iRedMail and it got talked to with the wrong name?

I had a "failed" snapshot. So I migrated the LXC based LDAP server. But here my problems began Snapshot rollback didn't help. Restore from backup also didn't help. The LDAP Server kept vanishing and appearing as if there was the same IP Address assigned on two differnt Server. After my...

That did it! renamed .bashrc and problem was gone ... # ~/.bashrc: executed by bash(1) for non-login shells. # Note: PS1 and umask are already set in /etc/profile. You should not # need this unless you want different defaults for root. FQDN=$(hostname -f) PS1='\e]0;\u@$FQDN $PWD\a\n $...

lxc config: arch: amd64 cores: 4 features: nesting=1 hostname: nextcloud.der-space.prod memory: 12288 mp0: local-zfs-data1:subvol-110-disk-1,mp=/var/lib/nextcloud-data,backup=1,size=446G mp1: local-zfs-data1:subvol-110-disk-4,mp=/tmp,backup=1,size=12G net0...

node3 is the target and it got sufficient space. node3 # zpool status pool: data1 state: ONLINE scan: scrub repaired 0B in 00:01:00 with 0 errors on Sun Jul 13 00:25:01 2025 config: NAME STATE READ WRITE CKSUM data1...

local-zfs-data1 That's the Pool for Container and Disk Images. But why does replication work between node1 & node2?

fo For node{1..3}: zfspool: local-zfs disable pool rpool/data content images,rootdir sparse 0 zfspool: local-zfs-data1 pool data1 content rootdir,images mountpoint /data1 sparse 1 dir: local-backup-data1 disable...

Its wired I can just migrate a Container/VM just fine, but not replicate it.

I think the problem isn't coming from ssh. I logged into the server without my .ssh/config like ssh -F /dev/null thats how I logged into PVE. From there I checked for ssh accessibility and no issue. I looked into this message for several times, and the "character offset" can also 3: at...

I tried to replicate one of my big LXC container to new Proxmox host and it refuses to do so with an error message: 2025-07-13 00:39:01 110-0: end replication job with error: command '/usr/bin/ssh -e none -o 'BatchMode=yes' -o 'HostKeyAlias=node3' -o...

Some questions about multisocket Systems: How are the CPU Cores loaded, Accross sockets? Is it the same for LXC and VMs? Is an AMD Ryzen/Epyc handeled like a multisocket System?

I didn't know MTU can be checked with a simple Ping command :)

I am not sure how to calculate my MTU on each of the Devices. Lets assume my Network Switch I did right (I have doubts but lets look at the OVS side) What I did: Every MTU involved in the Ceph Backend MTU is set to 3000. What I want to achieve is reduce the load on the CPU even its only 2x1...

Thanks that helped me a lot. changed /etc/kernel/cmdline and run proxmox-boot-tool refresh

I got stuck removing "rdinit=/vtoy/vtoy" I am able to start the System by removing "rdinit=/vtoy/vtoy" from the bootmenu. I followed this post: https://forum.proxmox.com/threads/ventoy-install-of-proxmox-8-1-halts-at-loading-initial-ramdisk.143196/#post-686898 Making the settings permanent...

Thanks for your help, I figured out there is redundancy exactly as described by you. But what is this command used for: ceph osd ok-to-stop 2 I thought it is useful to check if the redundancy is actually working, what is it really used for?

Once I had 4 nodes running with Ceph and one could fail. Now that one has failed and is removed. Is it possible to establish redundancy with the remaining 3 nodes? From ceph -s data: volumes: 2/2 healthy pools: 7 pools, 193 pgs objects: 139.48k objects, 538 GiB usage: 1.6...