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

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m (→‎Introduction: Fix wikilink)
Line 8: Line 8:
 
==/etc/network/interface/==
 
==/etc/network/interface/==
  
 +
<pre>
 
root@pve-2-50:~# cat /etc/network/interfaces
 
root@pve-2-50:~# cat /etc/network/interfaces
 
   
 
   
auto lo
+
auto lo
iface lo inet loopback
+
iface lo inet loopback
  
iface eth2 inet manual
+
iface eth2 inet manual
  
auto eth3
+
auto eth3
iface eth3 inet static
+
iface eth3 inet static
 
         address  10.14.14.50
 
         address  10.14.14.50
 
         netmask  255.255.255.0
 
         netmask  255.255.255.0
  
auto eth0
+
auto eth0
iface eth0 inet static
+
iface eth0 inet static
 
         address  10.15.15.50
 
         address  10.15.15.50
 
         netmask  255.255.255.0
 
         netmask  255.255.255.0
Line 27: Line 28:
 
         down route del -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
  
auto eth1
+
auto eth1
iface eth1 inet static
+
iface eth1 inet static
 
         address  10.15.15.50
 
         address  10.15.15.50
 
         netmask  255.255.255.0
 
         netmask  255.255.255.0
Line 34: Line 35:
 
         down route del -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
+
auto vmbr0
iface vmbr0 inet static
+
iface vmbr0 inet static
 
         address  192.168.2.50
 
         address  192.168.2.50
 
         netmask  255.255.240.0
 
         netmask  255.255.240.0
Line 42: Line 43:
 
         bridge_stp off
 
         bridge_stp off
 
         bridge_fd 0
 
         bridge_fd 0
 +
</pre>
  
 
==route==
 
==route==

Revision as of 13:44, 28 October 2016

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

Node1

/etc/network/interface/

root@pve-2-50:~# cat /etc/network/interfaces
 
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

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

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/

root@pve-2-51:/# cat /etc/network/interfaces

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
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
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/

root@pve-2-52:~# cat /etc/network/interfaces

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
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
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