[chef] Re: Re: Ohai netwrk interface cache.

[Hamza Khan-Cheema < >]

Hi

I am not making the changes within chef they have been done outside chef.   Thanks for the debug info.  Although it has not helped me out.

If I explain the exact steps, I am taking,  it might make things easier :)

1) The network names have been changed by editing the ifcfg-NAME files. A network name routes specific file has also been added for all new interfaces.  The OS is Red Hat Enterprise 5

2) An ifconfig lists the updated names and IP addresses.

3) Running ohai on the server I can see the new network card name in the network json object. (network[:interfaces])

4) In my chef recipe I am going through each node, except the logserver, pseudo code below:

servers = search (:node , "(NOT role:logserver)")
servers.each do |server|

  puts server['network']['interfaces'].keys
  # Code here that fails as it can't find the network name in the above hash.
end

5) I am expecting to see printed out above the exception the network names which ifconfig and the ohai command line app are reporting.  However I am seeing the original eth0, eth1 names. 

If ohai does not cache any information, what else could be going on?  I have restarted chef-server, but that had no effect.

Thanks.

Kind Regards
Hamza Khan-Cheema

On 29 Apr 2013 18:04, "Daniel DeLeo" < "> > wrote:

On Monday, April 29, 2013 at 5:16 AM, " target="_blank"> wrote:

Hi

I have a problem with the network information being gathered by ohai. I am

trying to lookup the ip addrss by the network controller name (eth0 etc). When

I initially setup the server the network names were just the standard names.

But I have now changed the names of the network interfaces to make things

easier for me to track different networks and their connections.

Are you making these changes with chef and wish to see them reflected within the chef run?

However even though I have restarted the network interfaces and doing an

ifconfig brings up the correct names, when trying to get the ip address on the

new names, it fails. After some debugging it turns out that it is still

referencing the old network adapter names.

Is there a way to flush the ohai cache or tell it to get that information

again?

Ohai doesn't have a cache. It's information is fully refreshed on every chef run. If you need to refresh it within a chef run, see the ohai resource:

http://docs.opscode.com/chef/resources.html#ohai

If you need to debug what ohai is doing, you can run `ohai -l debug` on the command line.

 

Thanks in advance.

Kind Regards

Thanks.

-- 

Daniel DeLeo