[CentOS] Regd: Ethernet Channel Bonding Clarification is Needed

John Newbigin jnewbigin at ict.swin.edu.au
Fri Sep 19 06:54:38 UTC 2008


I don't know if it impacts on the cluster config, but I had problems 
recently with links in my bonding interfaces going down because of some 
hotplug interference.

The solution was to add
HOTPLUG=no
to /etc/sysconfig/network

Might be worth a try.

John.

Balaji wrote:
> Dear All,
> Please ignore my previous mail
> I have using CentOS 4.4 Linux and Kernel Version is 2.6.9-42.EL
> 
> I have configured Cluster Suite with 2 servers
> Server 1 : 192.168.13.110 IP Address and hostname is primary
> Server 2 : 192.168.13.179 IP Address and hostname is secondary
> Floating : 192.168.13.83 IP Address (Assumed by currently active server)
> 
> I have configured Ethernet Channel Bonding in Each Cluster Nodes and 
> Channel Bonding Configuration Details are
> 1) Created bonding devices in "/etc/modprobe.conf" file    alias bond0 
> bonding
>   options bonding miimon=100 mode=1
> 2) Edit the "/etc/sysconfig/network-scripts/ifcfg-eth0 and ifcfg-eth1" 
> configuration
>   DEVICE=eth0
>   USERCTL= no
>   ONBOOT=yes
>   MASTER=bond0
>   SLAVE=yes
>   BOOTPROTO=none
> 
>   DEVICE=eth1
>   USERCTL= no
>   ONBOOT=yes
>   MASTER=bond0
>   SLAVE=yes
>   BOOTPROTO=none
> 3) Created a network script for the bonding device is 
> "/etc/sysconfig/network-scripts/ifcfg-bond0"
>   DEVICE=bond0
>   USERCTL=no
>   ONBOOT=yes     NETMASK=255.255.255.0
>   GATEWAY=192.168.13.1
>   IPADDR=192.168.13.110
> 4) Reboot the system for the changes to take effect.
> 
> After i am rebooted both the server then cluster node becomes simplex 
> and Services are started on both the nodes
> The cluster output in primary node
> 
> Member Status: Quorate
> 
> Member Name                              Status
> -----------                             ---------
> primary                                 Online, Local, rgmanager
> secondary                               Offline
> 
> Service Name         Owner (Last)                   State
> ------------         ------------                  --------
> Service              primary                        started
> 
> The cluster output in secondary node
> 
> Member Status: Quorate
> 
> Member Name                              Status
> -----------                             ---------
> primary                                 Offline
> secondary                               Online, Local, rgmanager
> 
> Service Name         Owner (Last)                   State
> ------------         --------------                --------
> Service              secondary                     started
> 
> Before Ethernet Channel Bonding cluster services are active in one node 
> and other nodes acts as passive node.
> But after Ethernet Channel Bonding cluster services are active on both 
> the nodes
> 
> I don't know what is the problem and is their any configuration is 
> required in cluster configuration file and
> cman is working only with eth0 interface
> 
> Can some one throw light on this peculiar problem
> 
> Regards
> -S.Balaji
> 
> 
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> 
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-- 
John Newbigin
ITS Senior Analyst / Programmer
Faculty of Information and Communication Technologies
Swinburne University of Technology
Melbourne, Australia
http://www.ict.swin.edu.au/staff/jnewbigin


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