132 IBM Certification Study Guide AIX HACMP
6.1.2 System Parameters
• Type date on all nodes to check that all the nodes in the cluster are
running with their clocks on the same time.
• Ensure that the number of user licenses has been correctly set
(lslicense).
• Check high water mark and other system settings (
smitty chgsys).
• Type
sysdumpdev -l and sysdumpdev -e to ensure that the dump space is
correctly set and that the primary dump device (
lslv hd7) is large enough
to accomodate a dump.
• Check that applications to be controlled by HACMP are not started here,
and that extraneous processes which might interfere with HACMP and/or
dominate system resources are not started (
more /etc/inittab).
• Check list of cron jobs (
crontab -l).
6.1.3 Process State
• Check the paging space usage by issuing lsps -a.
• Look for all expected processes with
ps -ef | more.
• Check that the run queue is < 5 and that the CPU usage is at an
acceptable level (
vmstat 2 5).
6.1.4 Network State
• Type for example ifconfig lo0, ifconfig en0 and ifconfig en1 to check the
network adapter configuration, if you are using ethernet adapters. For
other types of adapters, use the appropriate device name.
• To check the configuration of an SP Switch adapter, type:
/usr/lpp/ssp/css/ifconfig css0.
•Use netstat -i or netstat -in to show the network configuration of the
node.
• To check the alternate MAC address, issue
netstat -v ent0 | more.
• Look at mbufs sizing relative to requests for memory denied (
netstat -m |
more).
• Type
netstat -r or netstat -rAn to ensure that there are valid routes to the
other cluster node interfaces and to clients.
• Run
no -a | more and look at the setting of ipforwarding and
ipsendredirects.
