Rename a Proxmox Node
Renaming a Proxmox Node isnt a right click feature
In order to rename a node, you basically have to move everything around. This isnt an intended feature, and the official documentation basically says to not do it.
Rename Proxmox Node Script
To help make the node renaming process go smoother – I have created a simple script to take care of renaming the node.
This is a two step process, the script needs ran a second time, after reboot.
Copy and executethe script below.Follow directionsand prompts within the script.The system will reboot after
Stage 1is complete.After reboot, get back into the machine, and
re-run the scriptagain.Stage 2will complete, finish, and clean up.You should now see your
new node namein the web interface.
SCRIPT
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#!/bin/bash
#
# Future to-do:
# Possibly, add section for the edits you could make to /etc/resolv.conf
#
#
#
# This script needs to be run as root
#
if [ "$EUID" -ne 0 ]
then echo "Please run as root"
exit
fi
#
# This script takes input from the user for a new hostname,
# saves this input as NEW_HOSTNAME and the current hostname as OLD_HOSTNAME to a file (for persistance through reboot).
#
if [ -f "/root/pve-nodes-to-rename.tmp" ]; then
echo -e "\nStage 2 of script begining:"
else
#
#
# RUN SCRIPT IN STAGE 1
#
echo -e "\nPlease enter the node's new name:"
read -s NEW_HOSTNAME
echo -e "** $NEW_HOSTNAME ** will be set for the new name. \nPlease exit now if there was a typo. " && sleep 5; echo -e "Ok, no typo. Resuming..."; sleep 2;
echo "OLD_HOSTNAME=$(hostname)" > /root/pve-nodes-to-rename.tmp && echo -e "\ntemp file created."
echo "NEW_HOSTNAME=$NEW_HOSTNAME" >> /root/pve-nodes-to-rename.tmp && echo -e "hostnames entered into temp file."
sleep 1;
#
# This line reads the file we created into shell variables using a Process Substitution. This takes the output of a process, not just the stout, and reads it into the current shell environment.
. <(cat /root/pve-nodes-to-rename.tmp) && echo -e "shell variables loaded into memory."
sleep 1;
#
# Move the original file to a .bak extension, and replace the current hostname with the entered new node name.
sed -i.bak "s/$OLD_HOSTNAME/$NEW_HOSTNAME/g" /etc/hostname && echo -e "/etc/hostname file sucessfully edited."
#
# Do the same as the hostname with the hosts
sed -i.bak "s/$OLD_HOSTNAME/$NEW_HOSTNAME/g" /etc/hosts && echo -e "/etc/hosts file sucessfully edited."
#
# edit mailname if it exists
[ -e "/etc/mailname" ] && sed -i.bak "s/$OLD_HOSTNAME/$NEW_HOSTNAME/g" /etc/mailname
#
# edit main.cf if it exists
[ -e "/etc/postfix/main.cf" ] && sed -i.bak "s/$OLD_HOSTNAME/$NEW_HOSTNAME/g" /etc/postfix/main.cf
#
# copy config files to new node name and dont send errors to console
cp "/var/lib/rrdcached/db/pve2-node/$OLD_HOSTNAME" "/var/lib/rrdcached/db/pve2-node/$NEW_HOSTNAME" -r > /dev/null 2>&1;
cp "/var/lib/rrdcached/db/pve2-storage/$OLD_HOSTNAME" "/var/lib/rrdcached/db/pve2-storage/$NEW_HOSTNAME" -r > /dev/null 2>&1;
cp "/var/lib/rrdcached/db/pve2-$OLD_HOSTNAME" "/var/lib/rrdcached/db/pve2-$NEW_HOSTNAME" -r > /dev/null 2>&1;
echo -e "rrdcache has been moved to the new node."; sleep 2;
echo -e "\n#################################################################\n A reboot will occur,\n please run this script again after reboot completes.\n#################################################################\n"
REBOOT_INSECS=5
while [[ 0 -ne $REBOOT_INSECS ]]; do
echo "Rebooting in $REBOOT_INSECS.."
sleep 1
REBOOT_INSECS=$[$REBOOT_INSECS-1]
done
sleep 2;
#
# reboot and continue with other half of script
reboot now
fi
#
#
#
# STAGE 2 BEGIN
#
# begin stage 2
echo -e "\nThank you for starting stage 2.\n"
sleep 2;
# read variables into memory
. <(cat /root/pve-nodes-to-rename.tmp) && echo -e "shell variables from before reboot loaded back into memory."
sleep 2;
#
# update storage config
sed -i.bak "s/nodes $OLD_HOSTNAME/nodes $NEW_HOSTNAME/g" /etc/pve/storage.cfg && echo -e "updated storage config."
sleep 1.5;
#
# mv vm configs
mv /etc/pve/nodes/$OLD_HOSTNAME/qemu-server/*.conf /etc/pve/nodes/$NEW_HOSTNAME/qemu-server/ && echo -e "moved VM configs."
sleep 1.5;
#
# mv ct configs
mv /etc/pve/nodes/$OLD_HOSTNAME/lxc/*.conf /etc/pve/nodes/$NEW_HOSTNAME/lxc/ && echo -e "LXC configs have been moved as well.\n"
sleep 3;
#
#
#
# SCRIPT CLEANUP
#
# read variables from ini
. <(cat /root/pve-nodes-to-rename.tmp) && echo -e "Cleanup shall begin, removing ' $OLD_HOSTNAME '."
sleep 3;
#
# Begin file cleanup from using `sed -i.bak`
rm /etc/hostname.bak && rm /etc/hosts.bak
[ -e "/etc/mailname.bak" ] && rm /etc/mailname.bak
[ -e "/etc/postfix/main.cf.bak" ] && rm /etc/postfix/main.cf.bak
rm /var/lib/rrdcached/db/pve2-node/$OLD_HOSTNAME -r > /dev/null 2>&1;
rm /var/lib/rrdcached/db/pve2-storage/$OLD_HOSTNAME -r > /dev/null 2>&1;
rm /var/lib/rrdcached/db/pve2-$OLD_HOSTNAME -r > /dev/null 2>&1;
rm /etc/pve/nodes/$OLD_HOSTNAME -r > /dev/null 2>&1;
rm /etc/pve/storage.cfg.bak
rm /root/pve-nodes-to-rename.tmp && echo -e "\nCOMPLETE! Temp/Backup files have been removed.\n########################################################\nCheck out new node ' $NEW_HOSTNAME ' on the PVE web interface.\n########################################################\n"
Thanks, hope this helps someone.
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