IBM RS/6000 SP, Problem Determination Manual

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This soft copy for use by IBM employees only.
On the Control Workstation,
psyslclr
is used to trim daemon facility messages
older than 6 days. This is done in /usr/lpp/ssp/bin/cleanup.logs.ws, which is run
from the Control Workstation
′
s crontab file.
The SP system uses the crontabs file to periodically update file collections and
clean up log files. The installation process appends to the crontabs files in
/var/spool/cron/crontabs/root on the Control Workstation and each of the nodes.
The files contain different entries depending on their locations.
Both files on the Control Workstation and the nodes contain an entry to clean up
the logs. The following example shows the crontab entries for root on a Control
Workstation:
0 11 * * * /usr/bin/errclear -d S,O 30
0 12 * * * /usr/bin/errclear -d H 90
01 5 * * * /usr/lpp/diagnostics/bin/run_ssa_ela 1>/dev/null 2>/dev/null
0 * * * * /usr/lpp/diagnostics/bin/run_ssa_healthcheck 1>/dev/null 2>/dev/null
0 0
* * * /usr/lpp/ssp/bin/cleanup.logs.ws
If you want the same crontab file on all SP nodes, you must update all the
crontab files across the SP system. One way to do this is the following:
1. Get a crontab file from one of the node:
rsh hostname crontab -l > /tmp/crontab.nodes
2. Edit /tmp/crontab.nodes
3. Propagate the changed crontab file to all SP nodes:
dsh -a rcp root@mynode:/tmp/crontab.nodes /tmp/crontab.nodes
dsh -a
″
crontab < /tmp/crontab.nodes
″
Chapter 6. E r r o r Logging
169