HP StorageWorks 2/16V HP StorageWorks Fabric OS 5.3.x administrator guide (569 - Page 58

High availability of daemon processes, Table 7 List of daemons that are automatically restarted

Page 58 highlights

High availability of daemon processes Fabric OS 5.3.0 supports automatic restart of non-critical daemons. Starting these non-critical daemons is automatic, you cannot configure the startup process. The following sequence of events occur when a non-critical daemon fails: 1. When a non-critical daemon fails or dies, a RASlog and AUDIT event message is logged. 2. The daemon is automatically started again. 3. If the re-start is successful, then another message is sent to RASlog and AUDIT reporting the successful restart status. 4. Should the restart fail, another message is sent to RASlog and no further attempts are made to re-start the daemon. Schedule downtime and reboot the switch at your convenience. The following table lists the daemons that are considered non-critical and are automatically restarted on failure. Table 7 List of daemons that are automatically restarted Daemon Arrd Cald Evmd Raslogd Rpcd Snmpd Traced Trackd Webd Description Asynchronous Response Router (used to send management data to hosts when the switch is accessed via the APIs (FA API or SMI-S). Common Access Layer Daemon (used by Manageability Applications). Event Monitor Daemon (Port and Switch SCNs, firmwareDownload, configDownload). Remote Access Service Log Daemon logs error detection, reporting, handling, and presentation of data into a format consumable by management tools and the user. Remote Procedure Call daemon used by the API (Fabric Access API and SMI-S). Simple Network Management Protocol Daemon. Trace Daemon. Provide trace entry date/time translation to Trace Device at startup and when date/time changed by command. Maintains the trace dump trigger parameters in a Trace Device. Performs the trace Background Dump, trace automatic FTP, and FTP "aliveness check" if auto-FTP is enabled. Track Changes Daemon. Webserver daemon used for WebTools (includes httpd as well). 58 Performing basic configuration tasks

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58
Performing basic configuration tasks
High availability of daemon processes
Fabric OS 5.3.0 supports automatic restart of non-critical daemons. Starting these non-critical daemons is
automatic, you cannot configure the startup process. The following sequence of events occur when a
non-critical daemon fails:
1.
When a non-critical daemon fails or dies, a RASlog and AUDIT event message is logged.
2.
The daemon is automatically started again.
3.
If the re-start is successful, then another message is sent to RASlog and AUDIT reporting the successful
restart status.
4.
Should the restart fail, another message is sent to RASlog and no further attempts are made to re-start
the daemon.
Schedule downtime and reboot the switch at your convenience. The following table lists the daemons that
are considered non-critical and are automatically restarted on failure.
Table 7
List of daemons that are automatically restarted
Daemon
Description
Arrd
Asynchronous Response Router (used to send management data to hosts when
the switch is accessed via the APIs (FA API or SMI-S).
Cald
Common Access Layer Daemon (used by Manageability Applications).
Evmd
Event Monitor Daemon (Port and Switch SCNs, firmwareDownload,
configDownload).
Raslogd
Remote Access Service Log Daemon logs error detection, reporting, handling,
and presentation of data into a format consumable by management tools and
the user.
Rpcd
Remote Procedure Call daemon used by the API (Fabric Access API and
SMI-S).
Snmpd
Simple Network Management Protocol Daemon.
Traced
Trace Daemon. Provide trace entry date/time translation to Trace Device at
startup and when date/time changed by command. Maintains the trace dump
trigger parameters in a Trace Device. Performs the trace Background Dump,
trace automatic FTP, and FTP “aliveness check” if auto-FTP is enabled.
Trackd
Track Changes Daemon.
Webd
Webserver daemon used for WebTools (includes httpd as well).