% Modification d'adresses IP dans un serveur Proxmox


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Comment modifier les IP de nœuds sur un cluster Proxmox:

1. Bien lire les deux ressources ci-dessous
2. Réaliser les opérations décrites dans la seconde en suivant les instructions décrites dans la première


```
on each node one by one :
1. Change IP assigned to vmbr0, add network settings for the new interface so cluster can communicate.
2. FAIRE CHAQUE OPERATION DÉCRITE CI-DESSOUS with the new ip, and increment the config_version setting
3. edit the /etc/hosts with the new ip value
4. Reboot the node
5. wait for the node to reboot and perform next node, until end of nodes.
```

```bash
# stop corosync and pmxcfs on all nodes
$ systemctl stop corosync pve-cluster

# start pmxcfs in local mode on all nodes
$ pmxcfs -l

# put correct corosync config into local pmxcfs and corosync config dir (make sure to bump the 'config_version' inside the config file)
$ cp correct_corosync.conf /etc/pve/corosync.conf
$ cp correct_corosync.conf /etc/corosync/corosync.conf

# kill local pmxcfs
$ killall pmxcfs

# start corosync and pmxcfs again
$ systemctl start pve-cluster corosync

# check status
$ journalctl --since '-5min' -u pve-cluster -u corosync
$ pvecm status
```

1. [Made mistake in corosync.conf; now cannot edit | Proxmox Support Forum](https://forum.proxmox.com/threads/made-mistake-in-corosync-conf-now-cannot-edit.77173/post-342983)
2. [Change Cluster Nodes IP Addresses](https://forum.proxmox.com/threads/change-cluster-nodes-ip-addresses.33406/post-321731)