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Deploy Proxmox Cluster with Integrated Proxmox Ceph Cluster

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By Febryandana 5 min read

Environment

Diagram Architecture

Hardware Specification

Software Specification

SoftwareVersion
Operating SystemDebian 11
Proxmox7.4-13
CephQuincy 17.2

Preparation

Disable Managed hosts file from Cloud Init

This step is necessary if you use Debian cloud-image because if set true, /etc/hosts file will reset every reboot. Otherwise skip it.

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nano /etc/cloud/cloud.cfg.d/01_debian_cloud.cfg

---
manage_etc_hosts: false

Update Root Password

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passwd

#New password: Brawijaya302

Update Network

Change XXX to node’s last IP

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nano /etc/network/interfaces.d/50-cloud-init

---
auto lo
iface lo inet loopback

auto ens3
allow-hotplug ens3
iface ens3 inet static
    address 172.20.11.XXX/24
    dns-nameservers 8.8.8.8
    gateway 172.20.11.1
    metric 100

auto ens4
allow-hotplug ens4
iface ens4 inet static
    address 172.20.12.XXX/24
    dns-nameservers 8.8.8.8
    gateway 172.20.12.1
    metric 200

auto ens5
allow-hotplug ens5
iface ens5 inet static
    address 172.20.13.XXX/24
    dns-nameservers 8.8.8.8
    gateway 172.20.13.1
    metric 300

auto ens6
allow-hotplug ens6
iface ens6 inet static
    address 172.20.14.XXX/24
    dns-nameservers 8.8.8.8
    gateway 172.20.14.1
    metric 400

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reboot

Routing Table

Update Hostname

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hostnamectl set-hostname fb-pve01
hostnamectl set-hostname fb-pve02
hostnamectl set-hostname fb-pve03

Update Timezone

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timedatectl set-timezone Asia/Jakarta

Update Hosts Files

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nano /etc/hosts

---
127.0.0.1 localhost

# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

172.20.12.101 fb-pve01 pve1.febryandana.xyz
172.20.12.102 fb-pve02 pve2.febryandana.xyz
172.20.12.103 fb-pve03 pve3.febryandana.xyz

172.20.13.101 public.ceph.pve1.febryandana.xyz
172.20.13.102 public.ceph.pve2.febryandana.xyz
172.20.13.103 public.ceph.pve3.febryandana.xyz

172.20.14.101 cluster.ceph.pve1.febryandana.xyz
172.20.14.102 cluster.ceph.pve2.febryandana.xyz
172.20.14.103 cluster.ceph.pve3.febryandana.xyz

Upgrade System Packages

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apt update && apt upgrade -y

Deploy Proxmox Cluster

Change Kernel to Proxmox Kernel

Add Proxmox VE repository

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echo "deb [arch=amd64] http://download.proxmox.com/debian/pve bullseye pve-no-subscription" > /etc/apt/sources.list.d/pve-install-repo.list

Add Proxmox VE repository key

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wget https://enterprise.proxmox.com/debian/proxmox-release-bullseye.gpg -O /etc/apt/trusted.gpg.d/proxmox-release-bullseye.gpg 

# Verify (make sure checksum is same with below)
sha512sum /etc/apt/trusted.gpg.d/proxmox-release-bullseye.gpg 
7fb03ec8a1675723d2853b84aa4fdb49a46a3bb72b9951361488bfd19b29aab0a789a4f8c7406e71a69aabbc727c936d3549731c4659ffa1a08f44db8fdcebfa  /etc/apt/trusted.gpg.d/proxmox-release-bullseye.gpg

Update system

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apt update && apt full-upgrade -y

Install Proxmox VE Kernel LTS

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apt install pve-kernel-5.15
reboot

Install Proxmox

Install Proxmox packages

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apt install proxmox-ve postfix open-iscsi

If you don’t have Mail Server, choose Local only for Postfix configuration

Use default setting provided

Remove Debian kernel

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apt remove linux-image-amd64 'linux-image-5.10*'

Remove os-prober packages

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apt remove os-prober

Update grub entry

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update-grub

Now we can connect to Proxmox VE via web with self sign SSL certificates:

Login using root user and password and use Linux PAM standard authentication for Realm

Update PVE Network

Modify the network from inside cluster

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From left menu: Datacenter -> node hostname -> System -> Network

Update network configuration:

  1. Use blank config for ens3 because we will use it for bridging

  2. ens4

  3. ens5

  4. ens6

  5. Create Linux Bridge Network named vmbr0

Do this step also in node 2 and 3 then click Apply Configuration. The configuration will be like this:

Update DNS Settings

Add DNS Server for Proxmox

Update Proxmox Repository

Disable enterprise repository if we don’t use it

Optional - Change SSL/TLS Certificates

If we have other SSL/TLS certificates, we can add it to Proxmox nodes so that we don’t use the self sign certificate.

  1. Select nodes, then go to Certificates menu

  2. Select Upload Custom Certificates and fill in the Private Key and Certificate Chain

  3. After uploading custom certificates, Proxmox will automatically use this certificates as default

Create Proxmox Cluster

  1. From node pve1, select Datacenter -> Cluster -> Create Cluster

  2. Wait until TASK OK

  3. Then from the same place, click Join Information. We will use this info for joining other nodes

Join to Proxmox Cluster

From node 2 and 3, select Datacenter -> Cluster -> Join Cluster. Fill in information we copied from node 1 and other info needed such as root password and Cluster Network. Make sure to use root password from node 1 and same network fro Cluster Network.

After process joining nodes to cluster is done, we can check on every web UI that we have 3 nodes:

From now on, we can use one of the Proxmox VE Web UI to manage all nodes that we have.

Deploy Ceph Cluster

Install Ceph From Web UI

Repeat process for other nodes on cluster

Create Ceph Monitor

On node 2 and node 3, create new monitor:

Create Ceph Manager

On the same page, we also need to create Ceph Manager for node 2 and 3:

Create Ceph OSDs

Now we move to Ceph OSD menu. In this menu, we will create OSD with device class SSD from drive /dev/vdb to /dev/vdg on all nodes:

Create Ceph Pool for VM Disk Images and Containers

We need to create Ceph RBD pool to store our VM and LXC disk on Ceph so that it will get distributed on cluster.

From one of the nodes, select Ceph then Pools. From Pools menu we can create new Ceph pool:

  1. Ceph Pool ceph_vms for storing VM disk

  2. Ceph Pool ceph_containers for storing LXC disk

Now we have Ceph RBD pool to store our VM and LXC on Ceph so that they will get distributed and replicated across cluster

Create CephFS for ISO files

Create Metadata Servers on all nodes

Then create CephFS pool for storing ISO with name cephfs_iso

Add Ceph as Storage to Proxmox Cluster

From Datacenter, select Storage and then Add RBD and Add CephFS

First, we create RBD datastore for VMs disk using RBD pool ceph_vms

Second, we create RBD datastore for LXC disk using RBD pool ceph_containers

Third, we create CephFS datastore for storing ISO files using cephFS named cephfs_iso

This is the final result after we add datastore:

Final Word

Finally it’s all done! Now we have a Proxmox VE Cluster with 3 hyperconverged nodes that act as our compute and storage nodes. With Ceph, we can have backup and replication across cluster so in the event of compute node down, we can still recover our data such as VMs, Containers, and templates.

References

Guides, Proxmox
ceph cloud cluster proxmox high availability server
This post is licensed under CC BY 4.0 by the author.

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