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HP XC System Software Administration Guide Version 3.1

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# shownode metrics mem
Timestamp |Node |Total |Free |Buffer |Shared |TotalHigh |TotalFree
--------------------------------------------------------------------------------------
date and time stamp |n14 |4037620 |3922916 |5864 |0 |0 |0
date and time stamp |n15 |4037608 |2835972 |6720 |0 |0 |0
date and time stamp |n16 |8005316 |107448 |183388 |0 |0 |0
7.5.4 Monitoring Paging and Swap Data from the Command Line
The shownode metrics paging command displays the paging data for the node on which this command
is issued. For example:
# shownode metrics paging
Timestamp |Node |pgpgin |pgpgout |pswpin |pswpout
------------------------------------------------------------------------
date and time stamp |n14 |0 |0 |0 |0
date and time stamp |n15 |0 |0 |0 |0
date and time stamp |n16 |0 |0 |0 |0
The shownode metrics swap command displays swap space total and usage for the node on which
the command is issued. For example:
# shownode metrics swap
Timestamp |Node |Total |Used |Free |Page Cache
---------------------------------------------------------------------------
date and time stamp |n14 |6289408 |40572 |6248836 |70788
date and time stamp |n15 |6289408 |1134780 |5154628 |1164160
date and time stamp |n16 |0 |0 |0 |0
7.6 Logging Node Events
This section describes how the HP XC system uses the syslog and syslogng_forward services to log
node events and how these events are arranged according to the syslog-ng.conf rules file.
7.6.1 Understanding the Event Logging Structure
The HP XC System Software uses aggregator nodes to log events from clients. Aggregator node assignments
are made when the HP XC System Software is installed and configured. Each node in the HP XC system
is assigned to an aggregator node. One of the aggregator nodes is designated the master aggregator node.
Figure 7-2 illustrates this structure.
Figure 7-2 Aggregator and Client Nodes Structure
Each node runs the syslogd daemon and passes events of priority warning or higher to its corresponding
aggregator node; aggregator nodes also run the syslogd daemon and pass their own events to the master
aggregator node.
Each aggregator node runs the syslogng_forward service, and writes the events it receives from its
clients to the /hptc_cluster/adm/logs/aggregator_nodename.log file, where nodename is the
7.6 Logging Node Events 87