Full Mesh Network for Ceph Server: Difference between revisions

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Line 7: Line 7:
=Node1=
=Node1=
==/etc/network/interface==
==/etc/network/interface==
<pre>
<pre>
auto lo
auto lo
Line 19: Line 18:
         netmask  255.255.255.0
         netmask  255.255.255.0


# Connected to Node2 (.51)
auto eth0
auto eth0
iface eth0 inet static
iface eth0 inet static
Line 26: Line 26:
         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


# Connected to Node3 (.52)
auto eth1
auto eth1
iface eth1 inet static
iface eth1 inet static
Line 58: Line 59:


=Node2=
=Node2=
==/etc/network/interface/==
==/etc/network/interface==
<pre>
auto lo
iface lo inet loopback


root@pve-2-51:/# cat /etc/network/interfaces
iface eth2 inet manual


auto lo
auto eth3
iface lo inet loopback
iface eth3 inet static
 
iface eth2 inet manual
 
auto eth3
iface eth3 inet static
         address  10.14.14.51
         address  10.14.14.51
         netmask  255.255.255.0
         netmask  255.255.255.0


auto eth0
# Connected to Node1 (.50)
iface eth0 inet static
auto eth0
iface eth0 inet static
         address  10.15.15.51
         address  10.15.15.51
         netmask  255.255.255.0
         netmask  255.255.255.0
Line 79: Line 79:
         down route del -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
# Connected to Node3 (.52)
iface eth1 inet static
auto eth1
iface eth1 inet static
         address  10.15.15.51
         address  10.15.15.51
         netmask  255.255.255.0
         netmask  255.255.255.0
Line 86: Line 87:
         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  192.168.2.51
         address  192.168.2.51
         netmask  255.255.240.0
         netmask  255.255.240.0
Line 94: Line 95:
         bridge_stp off
         bridge_stp off
         bridge_fd 0
         bridge_fd 0
</pre>


==route==
==route==
<pre>
root@pve-2-51:/# route -n
root@pve-2-51:/# route -n
Kernel IP routing table
Kernel IP routing table
Destination    Gateway        Genmask        Flags Metric Ref    Use Iface
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
10.15.15.50    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
10.15.15.52    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 eth0
10.15.15.0      0.0.0.0        255.255.255.0  U    0      0        0 eth1
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
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
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
0.0.0.0        192.168.2.1    0.0.0.0        UG    0      0        0 vmbr0
</pre>


=Node3=
=Node3=
==/etc/network/interface/==
==/etc/network/interface==
<pre>
auto lo
iface lo inet loopback


root@pve-2-52:~# cat /etc/network/interfaces
iface eth2 inet manual


auto lo
auto eth3
iface lo inet loopback
iface eth3 inet static
 
iface eth2 inet manual
 
auto eth3
iface eth3 inet static
         address  10.14.14.52
         address  10.14.14.52
         netmask  255.255.255.0
         netmask  255.255.255.0


auto eth0
# Connected to Node2 (.51)
iface eth0 inet static
auto eth0
iface eth0 inet static
         address  10.15.15.52
         address  10.15.15.52
         netmask  255.255.255.0
         netmask  255.255.255.0
Line 129: Line 132:
         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
# Connected to Node1 (.50)
iface eth1 inet static
auto eth1
iface eth1 inet static
         address  10.15.15.52
         address  10.15.15.52
         netmask  255.255.255.0
         netmask  255.255.255.0
Line 136: Line 140:
         down route del -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
auto vmbr0
iface vmbr0 inet static
iface vmbr0 inet static
         address  192.168.2.52
         address  192.168.2.52
         netmask  255.255.240.0
         netmask  255.255.240.0
Line 144: Line 148:
         bridge_stp off
         bridge_stp off
         bridge_fd 0
         bridge_fd 0
</pre>
==route==
==route==
 
<pre>
root@pve-2-52:~# route -n
root@pve-2-52:~# route -n
Kernel IP routing table
Kernel IP routing table
Destination    Gateway        Genmask        Flags Metric Ref    Use Iface
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
10.15.15.51    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
10.15.15.50    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 eth0
10.15.15.0      0.0.0.0        255.255.255.0  U    0      0        0 eth1
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
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
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
0.0.0.0        192.168.2.1    0.0.0.0        UG    0      0        0 vmbr0
</pre>


[[Category: HOWTO]]
[[Category: HOWTO]]

Revision as of 11:49, 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

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
Retrieved from "https://pve.proxmox.com/mediawiki/index.php?title=Full_Mesh_Network_for_Ceph_Server&oldid=9434"