CC-2012-06-26-1

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-* Restart the networking ('''NOTE: At this point you will lose connectivity to the Worker Node and will need manual intervention to Regress'''+* Restart the networking '''(NOTE: At this point you will lose connectivity to the Worker Node and will need manual intervention to Regress)'''
service network restart service network restart

Revision as of 11:11, 26 Jun 2012

Table of contents
1 Description
2 Process

2.1 On Node071
2.2 On 141 Access

3 Regression

3.1 On 141 Access
3.2 On Node071

Description

Bonding of both ethernet interfaces of a test Sandybridge worker node (node071). This involves creating a bond0 interface and activating LACP on the worker node and creating a LACP trunk on the network switch.

Process

On Node071

  • Current network settings saved in /etc/sysconfig/network-scripts/non-bonded 
cd /etc/sysconfig/network-scripts/
mkdir non-bonded
cp ifcfg* non-bonded
  • Edit /etc/modprobe.conf and add the following lines: 
alias bond0 bonding
options bond0 mode=4 miimon=100 xmit_hash_policy=1
  • Create /etc/sysconfig/network-scripts/ifcfg-bond0 which contains the following contents: 
DEVICE=bond0
BOOTPROTO=none 
ONBOOT=yes
IPADDR=10.141.0.71
NETMASK=255.255.0.0
USERCTL=no
GATEWAY=10.141.246.7
  • Create /etc/sysconfig/network-scripts/ifcfg-eth0 which contains the following contents: 
DEVICE=eth0
BOOTPROTO=none
ONBOOT=yes
MASTER=bond0
SLAVE=yes
ISALIAS=no
  • Create /etc/sysconfig/network-scripts/ifcfg-eth1 which contains the following contents: 
DEVICE=eth1
BOOTPROTO=none
ONBOOT=yes
MASTER=bond0
SLAVE=yes
ISALIAS=no


  • Restart the networking (NOTE: At this point you will lose connectivity to the Worker Node and will need manual intervention to Regress) 
service network restart


On 141 Access

  • Create a sharing group that includes the bonded ports, in the case of node071 this is 43 and 44 
enable sharing 8:43 grouping 8:43,8:44 lacp
  • Enable LACP mode on the created sharing group 
configure sharing 8:1 lacp activity-mode passive
  • save the configuration 
save

Regression

On 141 Access

  • Disable the sharing group on the 141 Access switch. 
disable sharing 8:43

On Node071

(A local connection to the node will be required)

  • Remove the bonded interface descriptions in /etc/sysconfig/network-scripts/ 
cd /etc/sysconfig/network-scripts/
rm ifcfg-*
  • Replace with original network configuration 
cp non-bonded/* .
  • Restart Networking 
service network restart
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