Difference between revisions of "Full Mesh Network for Ceph Server"

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=Introduction=
 
=Introduction=
  
This wiki page describe a three node [[Ceph Server]] network configuration, using full mesh network (instead of a network switch). This should also work with a 5-node cluster, general you need nodes_total - 1 = nic ports. The basic idea is running a small 3 node cluster with 10 Gbit network WITHOUT buying an expensive 10 Gbit network switch.
+
This wiki page describes how to configure in Proxmox VE (or any other Debian based LINUX distribution) a three node [https://en.wikipedia.org/wiki/Mesh_networking "Meshed Network"] (instead of a network switch) as it can be used e.g. for connecting [[Ceph Server | Ceph Servers]] or nodes in a [[Proxmox VE 4.x Cluster | Proxmox VE Cluster]]. This should also work with a 5-node cluster, general you need nodes_total - 1 = nic ports. The basic idea is running a small 3 node cluster with 10 Gbit network WITHOUT buying an expensive 10 Gbit network switch.
  
 
This should work with 40 Gbit or even 100 Gbit Nics. But for this howto, 10 Gbit Intel NICs were used.
 
This should work with 40 Gbit or even 100 Gbit Nics. But for this howto, 10 Gbit Intel NICs were used.

Revision as of 12:00, 5 November 2016

Introduction

This wiki page describes how to configure in Proxmox VE (or any other Debian based LINUX distribution) a three node "Meshed Network" (instead of a network switch) as it can be used e.g. for connecting Ceph Servers or nodes in a Proxmox VE Cluster. This should also work with a 5-node cluster, general you need nodes_total - 1 = nic ports. The basic idea is running a small 3 node cluster with 10 Gbit network WITHOUT buying an expensive 10 Gbit network switch.

This should work with 40 Gbit or even 100 Gbit Nics. But for this howto, 10 Gbit Intel NICs were used.

Node1

/etc/network/interface

auto lo
iface lo inet loopback

iface eth2 inet manual

auto eth3
iface eth3 inet static
        address  10.14.14.50
        netmask  255.255.255.0

# Connected to Node2 (.51)
auto eth0
iface eth0 inet static
        address  10.15.15.50
        netmask  255.255.255.0
        up route add -net 10.15.15.51 netmask 255.255.255.255 dev eth0
        down route del -net 10.15.15.51 netmask 255.255.255.255 dev eth0

# Connected to Node3 (.52)
auto eth1
iface eth1 inet static
        address  10.15.15.50
        netmask  255.255.255.0
        up route add -net 10.15.15.52 netmask 255.255.255.255 dev eth1
        down route del -net 10.15.15.52 netmask 255.255.255.255 dev eth1

auto vmbr0
iface vmbr0 inet static
        address  192.168.2.50
        netmask  255.255.240.0
        gateway  192.168.2.1
        bridge_ports eth2
        bridge_stp off
        bridge_fd 0

route

root@pve-2-50:~# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
10.15.15.51     0.0.0.0         255.255.255.255 UH    0      0        0 eth0
10.15.15.52     0.0.0.0         255.255.255.255 UH    0      0        0 eth1
10.15.15.0      0.0.0.0         255.255.255.0   U     0      0        0 eth0
10.15.15.0      0.0.0.0         255.255.255.0   U     0      0        0 eth1
10.14.14.0      0.0.0.0         255.255.255.0   U     0      0        0 eth3
192.168.0.0     0.0.0.0         255.255.240.0   U     0      0        0 vmbr0
0.0.0.0         192.168.2.1     0.0.0.0         UG    0      0        0 vmbr0

Node2

/etc/network/interface

auto lo
iface lo inet loopback

iface eth2 inet manual

auto eth3
iface eth3 inet static
        address  10.14.14.51
        netmask  255.255.255.0

# Connected to Node1 (.50)
auto eth0
iface eth0 inet static
        address  10.15.15.51
        netmask  255.255.255.0
        up route add -net 10.15.15.50 netmask 255.255.255.255 dev eth0
        down route del -net 10.15.15.50 netmask 255.255.255.255 dev eth0

# Connected to Node3 (.52)
auto eth1
iface eth1 inet static
        address  10.15.15.51
        netmask  255.255.255.0
        up route add -net 10.15.15.52 netmask 255.255.255.255 dev eth1
        down route del -net 10.15.15.52 netmask 255.255.255.255 dev eth1

auto vmbr0
iface vmbr0 inet static
        address  192.168.2.51
        netmask  255.255.240.0
        gateway  192.168.2.1
        bridge_ports eth2
        bridge_stp off
        bridge_fd 0

route

root@pve-2-51:/# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
10.15.15.50     0.0.0.0         255.255.255.255 UH    0      0        0 eth0
10.15.15.52     0.0.0.0         255.255.255.255 UH    0      0        0 eth1
10.15.15.0      0.0.0.0         255.255.255.0   U     0      0        0 eth0
10.15.15.0      0.0.0.0         255.255.255.0   U     0      0        0 eth1
10.14.14.0      0.0.0.0         255.255.255.0   U     0      0        0 eth3
192.168.0.0     0.0.0.0         255.255.240.0   U     0      0        0 vmbr0
0.0.0.0         192.168.2.1     0.0.0.0         UG    0      0        0 vmbr0

Node3

/etc/network/interface

auto lo
iface lo inet loopback

iface eth2 inet manual

auto eth3
iface eth3 inet static
        address  10.14.14.52
        netmask  255.255.255.0

# Connected to Node2 (.51)
auto eth0
iface eth0 inet static
        address  10.15.15.52
        netmask  255.255.255.0
        up route add -net 10.15.15.51 netmask 255.255.255.255 dev eth0
        down route del -net 10.15.15.51 netmask 255.255.255.255 dev eth0

# Connected to Node1 (.50)
auto eth1
iface eth1 inet static
        address  10.15.15.52
        netmask  255.255.255.0
        up route add -net 10.15.15.50 netmask 255.255.255.255 dev eth1
        down route del -net 10.15.15.50 netmask 255.255.255.255 dev eth1

auto vmbr0
iface vmbr0 inet static
        address  192.168.2.52
        netmask  255.255.240.0
        gateway  192.168.2.1
        bridge_ports eth2
        bridge_stp off
        bridge_fd 0

route

root@pve-2-52:~# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
10.15.15.51     0.0.0.0         255.255.255.255 UH    0      0        0 eth0
10.15.15.50     0.0.0.0         255.255.255.255 UH    0      0        0 eth1
10.15.15.0      0.0.0.0         255.255.255.0   U     0      0        0 eth0
10.15.15.0      0.0.0.0         255.255.255.0   U     0      0        0 eth1
10.14.14.0      0.0.0.0         255.255.255.0   U     0      0        0 eth3
192.168.0.0     0.0.0.0         255.255.240.0   U     0      0        0 vmbr0
0.0.0.0         192.168.2.1     0.0.0.0         UG    0      0        0 vmbr0