I have two identical EC2 instances (the second is a replica of the first), running Gentoo.
The first instance has monit running which monitors a single process and some
system resources and functions great.
In the second instance, monit runs but quits right away.
The configuration is similar on both instances so are the versions of monit.
monit.log shows:
[GMT Oct 3 08:36:41] info : monit daemon with PID 5 awakened
Final lines on strace monit show:
write(2, "monit daemon with PID 5 awakened"..., 33monit daemon with PID 5 awakened ) = 33
time(NULL) = 1349252827
open("/etc/localtime", O_RDONLY) = 4
fstat64(4, {st_mode=S_IFREG|0644, st_size=118, ...}) = 0
fstat64(4, {st_mode=S_IFREG|0644, st_size=118, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb773a000
read(4, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\0\0\0\1\0\0\0\0"..., 4096) = 118
_llseek(4, -6, [112], SEEK_CUR) = 0
read(4, "\nGMT0\n", 4096) = 6
close(4) = 0
munmap(0xb773a000, 4096) = 0
write(3, "[GMT Oct 3 08:27:07] info :"..., 33) = 33
write(3, "monit daemon with PID 5 awakened"..., 33) = 33
waitpid(-1, NULL, WNOHANG) = -1 ECHILD (No child processes)
close(3) = 0
exit_group(0) = ?
No core dumps (ulimit -c shows unlimited)
monit -v shows:
monit: Debug: Adding host allow 'localhost'
monit: Debug: Skipping redundant host 'localhost'
monit: Debug: Skipping redundant host 'localhost'
monit: Debug: Adding credentials for user 'xxxx'.
Runtime constants:
Control file = /etc/monitrc
Log file = /var/log/monit/monit.log
Pid file = /var/run/monit.pid
Id file = /var/run/monit.pid
Debug = True
Log = True
Use syslog = False
Is Daemon = True
Use process engine = True
Poll time = 30 seconds with start delay 0 seconds
Expect buffer = 256 bytes
Event queue =
base directory /var/monit with 100 slots
Mail server(s) = xx.xxx.xx.xxx with timeout 30 seconds
Mail from = (not defined)
Mail subject = (not defined)
Mail message = (not defined)
Start monit httpd = True
httpd bind address = Any/All
httpd portnumber = 2812
httpd signature = True
Use ssl encryption = False
httpd auth. style = Basic Authentication and Host/Net allow list
Alert mail to =
[email protected]
Alert on = All events
The service list contains the following entries:
System Name = xxxx
Monitoring mode = active
CPU wait limit = if greater than 20.0% 1 times within 1 cycle(s) then alert else if succeeded 1 times within 1 cycle(s) then alert
CPU
system limit = if greater than 30.0% 1 times within 1 cycle(s) then alert else if succeeded 1 times within 1 cycle(s) then alert
CPU user limit = if greater than 70.0% 1 times within 1 cycle(s) then alert else if succeeded 1 times within 1 cycle(s) then alert
Swap usage limit = if greater than 25.0% 1 times within 1 cycle(s) then alert else if succeeded 1 times within 1 cycle(s) then alert
Memory usage limit = if greater than 75.0% 1 times within 1 cycle(s) then alert else if succeeded 1 times within 1 cycle(s) then alert
Load avg. (5min) = if greater than 2.0 1 times within 1 cycle(s) then alert else if succeeded 1 times within 1 cycle(s) then alert
Load avg. (1min) = if greater than 4.0 1 times within 1 cycle(s) then alert else if succeeded 1 times within 1 cycle(s) then alert
Process Name = xxxx
Group = server
Pid file = /var/run/xxxx.pid
Monitoring mode = active
Start program = '/etc/init.d/xxxx restart' timeout 20 second(s)
Stop program = '/etc/init.d/xxxx stop' timeout 30 second(s)
Existence = if does not exist 1 times within 1 cycle(s) then restart else if succeeded 1 times within 1 cycle(s) then alert
Pid = if changed 1 times within 1 cycle(s) then alert
Ppid = if changed 1 times within 1 cycle(s) then alert
Timeout = If restarted 3 times within 5 cycle(s) then unmonitor
Alert mail to =
[email protected]
Alert on = All events
Alert mail to =
[email protected]
Alert on = All events
-------------------------------------------------------------------------------
monit daemon with PID 5 awakened
Ran emerge --sync before emerge -va monit which installed monit v5.3.2.
When that didn't work i've downloaded v5.5 from their website and compiled from source which did not work either.
