The other day I came across the following error:
[user@host]# service network restart Shutting down interface eth0: /etc/sysconfig/network-scripts/ifdown-eth: line 91: /sys/class/net/bond0/bonding/slaves: No such file or directory [ OK ] Shutting down interface eth2: /etc/sysconfig/network-scripts/ifdown-eth: line 91: /sys/class/net/bond0/bonding/slaves: No such file or directory [ OK ] Shutting down loopback interface: [ OK ] Bringing up loopback interface: [ OK ] Bringing up interface bond0: [ FAILED ] |
The fix is simple: you need to load the Kernel bonding module. You either didn’t set this up to begin with or the syntax of the command was used incorrectly. Create a file in /etc/modprobe.d/ called bonding.conf:
[user@host]# vi /etc/modprobe.d/bonding.conf |
You just need to add the following the the bonding.conf file:
alias bond0 bonding |
For a one-time load (not usual), you can load to bonding modules manually:
[user@host]# modprobe bonding |
As a verification measure, you can check to see if the modules are loaded by issueing the following command and seeing the following output:
[user@host]# lsmod | grep bonding bonding 127331 0 8021q 25317 1 bonding ipv6 321422 107 cnic,bonding |
This was something that was overlooked that I was able to catch, since the error in question doesn’t really tell me much, other than the fact that the /proc filesystem doesn’t see any of the bonding configuration (which is what made me look into the kernel module).