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Monitoring —  | Red Hat Network Configuration Manager |
In addition to the options provided in the RHN website, Red Hat Network offers two command line tools for managing configuration files: the Red Hat Network Configuration Client and the Red Hat Network Configuration Manager. If you don't yet have these these tools installed, they can be found within the RHN Provisioning child channel for your operating system.
As the name implies, the Red Hat Network Configuration Client (rhncfg-client) is to be installed and run from an individual client system. From there you may use it to gain knowledge about how RHN will deploy configuration files to the particular system.
The Red Hat Network Configuration Client offers these primary modes: list, get, channels, diff, and verify.
To list the configuration files for the machine and the labels of the config channels containing them, issue the command:
rhncfg-client list |
You should see output resembling:
Config Channel File config-channel-17 /etc/foo.txt config-channel-17 /var/spool/aalib.rpm config-channel-14 /etc/foo.txt |
To download the most relevant configuration file for the machine, issue the command:
rhncfg-client get /etc/foo.txt |
You should see output resembling:
Deploying /etc/foo.txt |
You may then more the file to view its contents. Note that the file is selected as most relevant based upon the rank of the config channel containing it. This is accomplished within the Configuration tab of the System Details page. Refer to Section 6.4.2.6 System Details for instructions.
To view the labels and names of the config channels that apply to the system, issue the command:
rhncfg-client channels |
You should see output resembling:
Config channels: Label Name ----- ---- config-channel-17 config chan 2 config-channel-14 config chan 1 |
To obtain a difference between the config files deployed on the system and those for it stored by RHN, issue the command:
rhncfg-client diff |
You should see output resembling:
--- /tmp/@3603.0.rhn-cfg-tmp 2004-01-13 14:18:31.000000000 -0500 +++ /etc/foo.txt 2003-12-16 21:35:32.000000000 -0500 @@ -1,3 +1,5 @@ +blaaaaaaaaaaaaaaah |
In addition, you may include the --topdir option to compare config files in RHN with those located in an arbitrary (and unused) location on the system, like so:
[root@ root]# rhncfg-client diff --topdir /home/test/blah/ /usr/bin/diff: /home/test/blah/etc/foo.txt: No such file or directory /usr/bin/diff: /home/test/blah/var/spool/aalib.rpm: No such file or directory |
To quickly determine if files are different than those associated with it in RHN, issue the command:
rhncfg-client verify |
You should see output resembling:
modified /etc/foo.txt
/var/spool/aalib.rpm |
The file foo.txt is locally modified, while aalib.rpm is not.