I'm trying to decide how best to manage certain entries in Solaris
/etc/logadm.conf files. Initially, I'm just trying to ensure that
/var/adm/wtmpx is being rotated correctly. However, there are a couple
of catches in trying to manage this file.
1. The file is generally maintained through the logadm(1M) command, so
that would imply that commands promises would be better than files
promises. However...
2. Whenever logadm rotates a file, it adds an option to the file's entry
to record the last rotation time for the file. For example, a new wtmpx
entry like
/var/adm/wtmpx -C 3 -c -p 1m
might become
/var/adm/wtmpx -C 3 -P 'Sat May 8 03:10:00 2010' -c -p 1m
The location of the "-P 'timestamp'" option does not appear
deterministic. This complicates trying to determine whether the wtmpx
entry is correct. For example, say I have a bundle to which I pass a
filename a list of options:
"wtmpx" usebundle => _rotate_solaris_log("/var/adm/wtmpx", "-C 3 -c
-p 1m");
In the bundle, I see if there is already an entry that begins with
/var/adm/wtmpx. If not, I add it. If so, I leave it alone. However,
if/when I want to change the rotation parameters (say, changing "-p 1m"
to "-p 1w"), an exact match against the parameter string won't work
because of the added -P flag, and I'd like to avoid changing the line
EVERY time Cfengine runs.
Any thoughts that I might not have considered yet on how to approach
managing this file? Note that the parameters for wtmpx, for example, may
vary based on classes.
Thanks,
Justin
--
Justin C. Lloyd
Unix Infrastructure Engineer
DigitalGlobe, An Imaging and Information Company
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