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envconfig(8)
NAME
envconfig - Configures the Environmental Monitoring daemon
SYNOPSIS
/usr/sbin/envconfig -c var=value
/usr/sbin/envconfig start | stop
/usr/sbin/envconfig -q
OPTIONS
Environmental Monitoring provides a means of detecting system threshold
conditions, that if exceeded, could result in a loss of data or damage to
the system itself. To detect and notify users of critical conditions, the
envmond daemon is used. This utility, envconfig, is used to customize the
envmond daemon. This section describes the envconfig options you can use
to configure the daemon.
-c var=value
Sets the variables that specify how the system environment is
monitored. These variables are stored in the /etc/rc.config file and
are read by the envmond daemon at system start-up. If a variable is not
set, the default value of that variable is assumed.
ENVMON_CONFIGURED
Specifies the state of Environmental Monitoring. If this variable
is set to zero (0), the Environmental Monitoring package is not
started during the system boot. If this variable is set to 1, and
Environmental Monitoring is supported by that platform, it is
started during the system boot. The default value is zero (0).
ENVMON_GRACE_PERIOD
Specifies the time (in minutes) that can elapse between the
detection of a high temperature condition and the shutdown of the
system. The default value is 15 minutes.
ENVMON_HIGH_THRESH
Specifies the threshold level that can be encountered before the
envmond daemon broadcasts a warning and suggested action.
ENVMON_MONITOR_PERIOD
Specifies the frequency (in seconds) between queries of the system
by the envmond daemon. The default value is 60 seconds.
ENVMON_USER_SCRIPT
Specifies the path of a user-defined script that you want the
envmond daemon to execute when a high threshold level is
encountered. The envmond daemon continues to check the environment
after the script has executed and proceeds as needed should the
high threshold levels persist.
If you set this variable, the envmond daemon directs output from
the script to /dev/console. Output is not displayed on standard
output or written to a file as this is not the behavior of the
daemon. To display on standard output, explicitly specify the
logger command within the user defined script.
ENVMON_SHUTDOWN_SCRIPT
Specifies the path of a user-defined script that you want the
envmond daemon to execute when a shutdown condition is encountered.
The envmond daemon executes this script instead of /sbin/shutdown.
You must execute /sbin/shutdown within your configured
ENVMON_SHUTDOWN_SCRIPT to shut down the system. If you do not
specify anything for ENVMON_SHUTDOWN_SCRIPT, envmond runs
/sbin/shutdown by default when a shutdown condition is encountered.
If you set this variable, the envmond daemon directs output from
the script to /dev/console. Output is not displayed on standard
output or written to a file as this is not the behavior of the
daemon. To display on standard output, explicitly specify the
logger command within the user defined script.
start | stop
Turns the envmond daemon on or off after system startup.
-q Displays the values of ENVMON_CONFIGURED, ENVMON_GRACE_PERIOD,
ENVMON_HIGH_THRESH, ENVMON_MONITOR_PERIOD, ENVMON_USER_SCRIPT, and
ENVMON_SHUTDOWN_SCRIPT as specified in the /etc/rc.config file. If a
specified entry is not found, the environmental variable is not
displayed.
DESCRIPTION
The envconfig utility is used to customize the envmond daemon. You must
have root privileges to use this utility. Using this utility, you can:
· Specify whether or not Environmental Monitoring is turned on or off at
system startup.
· Specify how much time can elapse between the envmond daemon
encountering a critical condition and the daemon initiating an orderly
shutdown of the system.
· Specify how frequently the envmond daemon queries the system for
information.
· Start and stop the envmond after Environmental Monitoring has been
turned on at system startup.
· Display the settings of the environment variables as specified in the
/etc/rc.config file.
Note that the feature that you want to monitor must be supported on a given
platform. For example, the AlphaServer 8400/GS140 supports reporting of
power supply and fan status, the current system temperature, and the
maximum allowed system temperature.
EXAMPLES
The following procedure describes how you test for and start the
environmental monitoring subsystem
1. In multiuser mode, check the status of the environmental monitoring
subsystem as follows:
# /sbin/sysconfig -q envmon
envmon:
env_current_temp = 35
env_high_temp_thresh = 40
env_fan_status = 0
env_ps_status = 0
env_supported = 1
2. If the value of env_supported is 0, configure the envmond daemon and
reboot the system using either of the following methods:
· At the command prompt, enter the following command:
# /usr/sbin/envconfig -c ENVMON_CONFIGURED=1
· Use the rcmgr command as follows:
# rcmgr set ENVMON_CONFIGURED 1
This command will enable the envmond daemon and export the variable,
creating the following two lines in the /etc/rc.configfile:
ENVMON_CONFIGURED="1"
export ENVMON_CONFIGURED
You can use the /sbin/sysconfig command to view the system environment at
any time. The envmond daemon will the print warning messages in the event
of a power supply failure, abnormality, or high temperatures. Error logs
are logged in the /var/adm/binary.errlog.
In the following example, the system shuts down in 10 minutes if the
temperature does not fall below the critical threshold.
/usr/sbin/envconfig -c ENVMON_GRACE_PERIOD=10
FILES
/etc/rc.config*
Databases that contains the values of the environment monitoring
variables. Note that you must use the rcmgr comand to update the
rc.config* files, particularly on clustered systems.
SEE ALSO
Commands: envmond(8)
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