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+ <!DOCTYPE html>
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+ <html lang="en" xmlns="http://www.w3.org/1999/xhtml">
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+ <head>
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+ <title>Renaming a Proxmox VE Node</title>
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+ <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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+ <meta charset="UTF-8">
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+ <meta name="keywords" content="How To Rename A Proxmox VE Host,How To Rename A Proxmox VE Node,Rename Proxmox Host,Rename Proxmox Node,Change Proxmox Host Name,Change Proxmox Node Name,Debian,Host,Hypervisor,Linux,Node,Proxmox,Proxmox Tutorial,Proxmox VE,Rename,VM,Home Lab,Virtual Machine,Proxmox Node,Proxmox Host,How To,Tutorial,i12bretro">
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+ <meta name="author" content="i12bretro">
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+ <meta name="description" content="Renaming a Proxmox VE Node">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <link rel="icon" type="image/x-icon" href="includes/favicon.ico">
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+ <script type="text/javascript" src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
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+ <script type="text/javascript" src="includes/js/steps.js"></script>
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+ <link href="css/steps.css" rel="stylesheet" type="text/css" />
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+ </head>
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+ <body>
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+ <div id="gridContainer">
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+ <div class="topMargin"></div>
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+ <div id="listName" class="topMargin">
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+ <h1>Renaming a Proxmox VE Node</h1>
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+ </div>
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+ <div></div>
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+ <div id="content">
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+ <p>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.</p>
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+
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+<p><em>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. </em></p>
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+
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+<ol>
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+ <li>Log into ProxMox VE, either at the console, via SSH or the web UI and launch the web shell</li>
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+ <li>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
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+ <div class="codeBlock"># set the old hostname and write to ini<br />
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+ echo "OLD_HOSTNAME=$(hostname)" > ~/pmrename.ini<br />
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+ # set the new hostname in ini, update as needed<br />
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+ echo "NEW_HOSTNAME=vm-dev" >> ~/pmrename.ini<br />
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+ # read variables from ini<br />
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+ source <(grep = ~/pmrename.ini)<br />
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+ # edit hostname file<br />
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+ sed -i.bak "s/$OLD_HOSTNAME/$NEW_HOSTNAME/gi" /etc/hostname<br />
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+ # edit hosts file<br />
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+ sed -i.bak "s/$OLD_HOSTNAME/$NEW_HOSTNAME/gi" /etc/hosts<br />
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+ # edit mailname if it exists<br />
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+ [ -e "/etc/mailname" ] && sed -i.bak "s/$OLD_HOSTNAME/$NEW_HOSTNAME/gi" /etc/mailname<br />
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+ # edit main.cf if it exists<br />
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+ [ -e "/etc/postfix/main.cf" ] && sed -i.bak "s/$OLD_HOSTNAME/$NEW_HOSTNAME/gi" /etc/postfix/main.cf<br />
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+ # copy config files to new node name<br />
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+ cp "/var/lib/rrdcached/db/pve2-node/$OLD_HOSTNAME" "/var/lib/rrdcached/db/pve2-node/$NEW_HOSTNAME" -r<br />
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+ cp "/var/lib/rrdcached/db/pve2-storage/$OLD_HOSTNAME" "/var/lib/rrdcached/db/pve2-storage/$NEW_HOSTNAME" -r<br />
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+ cp "/var/lib/rrdcached/db/pve2-$OLD_HOSTNAME" "/var/lib/rrdcached/db/pve2-$NEW_HOSTNAME" -r<br />
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+ # reboot<br />
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+ reboot now</div>
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+ </li>
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+ <li>Wait for the Proxmox host to come back up</li>
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+ <li>Log back in and continue with the following commands
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+ <div class="codeBlock"># read variables from ini<br />
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+ source <(grep = ~/pmrename.ini)<br />
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+ # update storage config<br />
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+ sed -i.bak "s/nodes $OLD_HOSTNAME/nodes $NEW_HOSTNAME/gi" /etc/pve/storage.cfg<br />
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+ # mv vm configs<br />
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+ mv /etc/pve/nodes/$OLD_HOSTNAME/qemu-server/*.conf /etc/pve/nodes/$NEW_HOSTNAME/qemu-server/<br />
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+ # mv ct configs<br />
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+ mv /etc/pve/nodes/$OLD_HOSTNAME/lxc/*.conf /etc/pve/nodes/$NEW_HOSTNAME/lxc/</div>
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+ </li>
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+ <li>Test that Proxmox web UI and all VMs are working as intended</li>
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+</ol>
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+
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+<h2>Cleaning Up</h2>
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+
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+<ol>
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+ <li>After fully testing everything is working, run the following commands to clean up backup files
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+ <div class="codeBlock"># read variables from ini<br />
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+ source <(grep = ~/pmrename.ini)<br />
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+ rm /etc/hostname.bak && rm /etc/hosts.bak<br />
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+ [ -e "/etc/mailname.bak" ] && rm /etc/mailname.bak<br />
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+ [ -e "/etc/postfix/main.cf.bak" ] && rm /etc/postfix/main.cf.bak<br />
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+ rm /var/lib/rrdcached/db/pve2-node/$OLD_HOSTNAME -r<br />
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+ rm /var/lib/rrdcached/db/pve2-storage/$OLD_HOSTNAME -r<br />
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+ rm /var/lib/rrdcached/db/pve2-$OLD_HOSTNAME -r<br />
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+ rm /etc/pve/nodes/$OLD_HOSTNAME -r<br />
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+ rm /etc/pve/storage.cfg.bak<br />
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+ rm ~/pmrename.ini</div>
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+ </li>
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+</ol>
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+
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+<p>Source: <a href="https://pve.proxmox.com/wiki/Renaming_a_PVE_node" target="_blank">https://pve.proxmox.com/wiki/Renaming_a_PVE_node</a></p>
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+ </div>
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+ </div>
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+ </body>
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+ </html>
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+
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i12bretro