Just install snmpd on each domain and then use cacti ( http://www.cacti.net/
) for all your monitoring needs.
--jason
On Nov 21, 2008, at 12:13 AM, Kevan Miller wrote:
This is definitely better than what we have now...
Anybody else know of any xen monitoring tools?
--kevan
On Oct 17, 2008, at 6:58 PM, Jay D. McHugh wrote:
Hey Kevan,
Regarding monitoring...
I managed to run into xenmon.py.
It appears to log the system utilization for the whole box as well
as each
VM to log files in 'your' home directory if you specify the '-n'
flag.
Here is the help page for xenmon.py:
[EMAIL PROTECTED]:~$ sudo python /usr/sbin/xenmon.py -h
Usage: xenmon.py [options]
Options:
-h, --help show this help message and exit
-l, --live show the ncurses live monitoring frontend
(default)
-n, --notlive write to file instead of live monitoring
-p PREFIX, --prefix=PREFIX
prefix to use for output files
-t DURATION, --time=DURATION
stop logging to file after this much time has
elapsed
(in seconds). set to 0 to keep logging
indefinitely
-i INTERVAL, --interval=INTERVAL
interval for logging (in ms)
--ms_per_sample=MSPERSAMPLE
determines how many ms worth of data goes in
a sample
--cpu=CPU specifies which cpu to display data for
--allocated Display allocated time for each domain
--noallocated Don't display allocated time for each domain
--blocked Display blocked time for each domain
--noblocked Don't display blocked time for each domain
--waited Display waiting time for each domain
--nowaited Don't display waiting time for each domain
--excount Display execution count for each domain
--noexcount Don't display execution count for each domain
--iocount Display I/O count for each domain
--noiocount Don't display I/O count for each domain
And here is some sample output:
[EMAIL PROTECTED]:~$ cat log-dom0.log
# passed cpu dom cpu(tot) cpu(%) cpu/ex allocated/ex blocked(tot)
blocked(%) blocked/io waited(tot) waited(%) waited/ex ex/s io(tot)
io/ex
0.000 0 0 2.086 0.000 38863.798 30000000.000 154.177 0.000 0.000
0.504 0.000 9383.278 0.000 0.000 0.000
2.750 1 0 2.512 0.000 53804.925 30000000.000 153.217 0.000 0.000
0.316 0.000 6774.813 0.000 0.000 0.000
4.063 2 0 2.625 0.000 59959.942 30000000.000 153.886 0.000 0.000
0.173 0.000 3939.987 0.000 0.000 0.000
5.203 3 0 3.020 0.000 47522.430 30000000.000 171.834 0.000 0.000
0.701 0.000 11031.759 0.000 0.000 0.000
6.403 4 0 2.130 0.000 39256.871 30000000.000 171.870 0.000 0.000
0.617 0.000 11378.014 0.000 0.000 0.000
9.230 6 0 0.836 0.000 53962.875 30000000.000 57.287 0.000 0.000
0.038 0.000 2450.488 0.000 0.000 0.000
10.305 7 0 2.171 0.000 46119.247 30000000.000 154.008 0.000 0.000
0.367 0.000 7804.444 0.000 0.000 0.000
11.518 0 0 15931680.822 1.593 54019.023 30000000.000 889706824.191
88.971 0.000 2630292.436 0.263 8918.446 294.927 0.000 0.000
1009.216 1 0 7687035.544 0.769 53822.548 30000000.000 473101345.004
47.310 0.000 864964.568 0.086 6056.248 142.822 0.000 0.000
1010.199 2 0 20502235.224 2.050 61655.293 30000000.000
979188763.754 97.919 0.000 4279443600.516 427.944 12869345.608
332.530 0.000 0.000
1011.239 3 0 13634865.766 1.363 45934.870 30000000.000
985479796.363 98.548 0.000 1593248.596 0.159 5367.538 296.830 0.000
0.000
1012.312 4 0 18228049.181 1.823 61242.790 30000000.000
979822521.396 97.982 0.000 2593364.560 0.259 8713.213 297.636 0.000
0.000
1013.338 5 0 9891757.872 0.989 65386.046 30000000.000 571275802.794
57.128 0.000 357431.539 0.036 2362.678 151.282 0.000 0.000
We could probably add a cron job to grab a single sample every X
minutes
and append them together to build up a utilization history (rather
than
simply running it all of the time).
I just tried to get a single sample and the smallest run I could
get was
about three seconds with four samples taken.
Or, I also tried xentop in batch mode:
[EMAIL PROTECTED]:~$ sudo xentop -b -i 1
NAME STATE CPU(sec) CPU(%) MEM(k) MEM(%) MAXMEM(k)
MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k) VBDS VBD_OO VBD_RD
VBD_WR SSID
Domain-0 -----r 430567 0.0 3939328 23.5 no
limit n/a 8 4 0 0 0 0
0 0 2149631536
tck01 --b--- 750449 0.0 3145728 18.8 3145728
18.8 2 1 483054 1855493 1 15 655667 8445829
2149631536
tck02 --b--- 1101273 0.0 3145728 18.8 3145728
18.8 2 1 367792 1773407 1 83 1131709 9030663
2149631536
tck03 -----r 144552 0.0 3145728 18.8 3145728
18.8 2 1 188115 2370069 1 6 370431 1290683
2149631536
tck04 --b--- 103742 0.0 3145728 18.8 3145728
18.8 2 1 286936 2341941 1 7 381523 1484476
2149631536
It looks to me like having a cron job that periodically ran xentop
and
build up a history would be the best option (without digging through
a ton of different specialized monitor packages).
