Renaming a Proxmox VE Node

#Proxmox #Hypervisor #Rename

Full steps can be found at https://i12bretro.github.io/tutorials/0633.html

I recently upgraded my homelab Proxmox host server and wanted to repurpose my existing server to use as a testing environment. Below are the steps I used to rename the old Proxmox instance. These steps worked for me. Please let me know in the comments if you try these steps and any issues arise that I didn't have in my environment.   NOTE: Renaming a node that is part of a cluster is not recommended. These steps are intended for standalone nodes. Always make backups of important VMs before attempting to modify the Proxmox host.      01. Log into ProxMox VE, either at the console, via SSH or the web UI and launch the web shell    02. Run the following commands, alternatively you can manually edit each file mentioned with nano or vi and replace the old hostname with the new one          # set the old hostname and write to ini          echo "OLD_HOSTNAME=$(hostname)" ≫ ~/pmrename.ini          # set the new hostname in ini, update as needed          echo "NEW_HOSTNAME=vm-dev" ≫≫ ~/pmrename.ini          # read variables from ini          source ≪(grep = ~/pmrename.ini)          # edit hostname file          sed -i.bak "s/$OLD_HOSTNAME/$NEW_HOSTNAME/gi" /etc/hostname          # edit hosts file          sed -i.bak "s/$OLD_HOSTNAME/$NEW_HOSTNAME/gi" /etc/hosts          # edit mailname if it exists          [ -e "/etc/mailname" ] && sed -i.bak "s/$OLD_HOSTNAME/$NEW_HOSTNAME/gi" /etc/mailname          # edit main.cf if it exists          [ -e "/etc/postfix/main.cf" ] && sed -i.bak "s/$OLD_HOSTNAME/$NEW_HOSTNAME/gi" /etc/postfix/main.cf          # copy config files to new node name          cp "/var/lib/rrdcached/db/pve2-node/$OLD_HOSTNAME" "/var/lib/rrdcached/db/pve2-node/$NEW_HOSTNAME" -r          cp "/var/lib/rrdcached/db/pve2-storage/$OLD_HOSTNAME" "/var/lib/rrdcached/db/pve2-storage/$NEW_HOSTNAME" -r          cp "/var/lib/rrdcached/db/pve2-$OLD_HOSTNAME" "/var/lib/rrdcached/db/pve2-$NEW_HOSTNAME" -r          # reboot          reboot now    03. Wait for the Proxmox host to come back up    04. Log back in and continue with the following commands          # read variables from ini          source ≪(grep = ~/pmrename.ini)          # update storage config          sed -i.bak "s/nodes $OLD_HOSTNAME/nodes $NEW_HOSTNAME/gi" /etc/pve/storage.cfg          # mv vm configs          mv /etc/pve/nodes/$OLD_HOSTNAME/qemu-server/*.conf /etc/pve/nodes/$NEW_HOSTNAME/qemu-server/          # mv ct configs

... https://www.youtube.com/watch?v=4B0_CzGH3ug