NAME¶
watchdog.conf - configuration file for the watchdog daemon
DESCRIPTION¶
This file carries all configuration options for the Linux watchdog daemon. Each
option has to be written on a line for itself. Comments start with '#'. Blanks
are ignored except after the '=' sign. An empty text after the '=' sign
disables the feature as long as that makes sense.
OPTIONS¶
- interval = <interval>
- Set the interval between two writes to the watchdog device.
The kernel drivers expects a write command every minute. Otherwise the
system will be rebooted. Default value is 1 second. An interval of more
than a minute can only be used with the -f command-line option.
- logtick = <logtick>
- If you enable verbose logging, a message is written into
the syslog or a logfile. While this is nice, it is not necessary to get a
message every 10 seconds which really fills up disk and needs CPU. logtick
allows adjustment of the number of intervals skipped before a log message
is written. If you use logtick = 60 and interval = 10, only every 10
minutes (600 seconds) a message is written. This may make the exact time
of a crash harder to find but greatly reduces disk usage and administrator
nerves if you're looking for a particular syslog entry in between of
watchdog messages.
- max-load-1 = <load1>
- Set the maximal allowed load average for a 1 minute span.
Once this load average is reached the system is rebooted. Default value is
0. That means the load average check is disabled. Be careful not to this
parameter too low. To set a value less then the predefined minimal value
of 2, you have to use the -f commandline option.
- max-load-5 = <load5>
- Set the maximal allowed load average for a 5 minute span.
Once this load average is reached the system is rebooted. Default value is
3/4*max-load-1. Be careful not to this parameter too low. To set a value
less then the predefined minimal value of 2, you have to use the -f
commandline option.
- max-load-15 = <load15>
- Set the maximal allowed load average for a 15 minute span.
Once this load average is reached the system is rebooted. Default value is
1/2*max-load-1. Be careful not to this parameter too low. To set a value
less then the predefined minimal value of 2, you have to use the -f
commandline option.
- min-memory = <minpage>
- Set the minimal amount of virtual memory that has to stay
free. Note that this is in pages. Default value is 0 pages which means
this test is disabled. The page size is taken from the system include
files.
- max-temperature = <temp>
- Set the maximal allowed temperature. Once this temperature
is reached the system is halted. Default value is 120. There is no unit
conversion, so make sure you use the same unit as your hardware. Watchdog
will issue warnings once the temperature increases 90%, 95% and 98% of
this temperature.
- watchdog-device = <device>
- Set the watchdog device name. Default is to disable keep
alive support.
- watchdog-timeout = <timeout>
- Set the watchdog device timeout during startup. If not set,
the default is driver-dependent.
- temperature-device = <temp-dev>
- Set the temperature device name. Default is to disable
temperature checking.
- file = <filename>
- Set file name for file mode. This option can be given as
often as you like to check several files.
- change = <mtime>
- Set the change interval time for file mode. This options
always belongs to the active filename, that is when finding a 'change ='
line watchdog assumes it belongs to the most recently read 'file =' line.
They don't neccessarily have to follow each other directly. But you cannot
specify a 'change =' before a 'file ='. The default is to only stat the
file and don't look for changes. Using this feature to monitor changes in
/var/log/messages might require some special syslog daemon configuration,
e.g. rsyslog needs "$ActionWriteAllMarkMessages on" to be set to
make sure the marks are written no matter what.
- pidfile = <pidfilename>
- Set pidfile name for server test mode. This option can be
given as often as you like to check several servers.
- ping = <ip-addr>
- Set IP address for ping mode. This option can be used more
than once to check different connections.
- interface = <if-name>
- Set interface name for network mode. This option can be
used more than once to check different interfaces.
- test-binary = <testbin>
- Execute the given binary to do some user defined
tests.
- test-timeout = <timeout in seconds>
- User defined tests may only run for <timeout>
seconds. Set to 0 for unlimited.
- repair-binary = <repbin>
- Execute the given binary in case of a problem instead of
shutting down the system.
- repair-timeout = <timeout in seconds>
- repair command may only run for <timeout> seconds.
Set to 0 for unlimited.
- admin = <mail-address>
- Email address to send admin mail to. That is, who shall be
notified that the machine is being halted or rebooted. Default is 'root'.
If you want to disable notification via email just set admin to en empty
string.
- realtime = <yes|no>
- If set to yes watchdog will lock itself into memory so it
is never swapped out.
- priority = <schedule priority>
- Set the schedule priority for realtime mode.
- test-directory = <test directory>
- Set the directory to run user test/repair scripts. Default
is '/etc/watchdog.d' See the Test Directory section in watchdog(8) for
more information.
- log-dir = <log directory>
- Set the log directory to capture the standard output and
standard error from repair-binary and test-binary execution. Default is
'/var/log/watchdog'.
FILES¶
- /etc/watchdog.conf
- The watchdog configuration file
- /etc/watchdog.d
- A directory containing test-or-repair commands. See the
Test Directory section in watchdog(8) for more information.
SEE ALSO¶
watchdog(8)