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<div class=Section1>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Bruce,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>If it was just SMTP, I’d be all set
with your second suggestion (just forget the process monitor and do a network
test to 25, but as always, it’s more complicated. There are a few
processes that I really have to watch that don’t have external ports to
poll.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Your first suggestion is a great one, too.
I’m just not positive that creating a mini-client would be easier than
writing a monitor to check the clustat output and then report on cluster
processes. It might be worth trying both.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Another idea I had is around changing depends
to recognize clear or yellow as a failure (0) instead of a success.
That would let me to return a yellow or clear on smtpd process down – letting
the combo work the way it should if both nodes were down.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>smtpHA.procs = (smtp01.conn &&
smtp01.procs) || (smtp02.conn && smtp02.procs)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>= (1 && 0) || (1&&1)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>As always, thanks for the suggestions –
one of them will do the trick!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>-dan<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> White, Bruce
[mailto:bewhite@fellowes.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, June 21, 2012 5:18
PM<br>
<b><span style='font-weight:bold'>To:</span></b> Dan Smith; <st1:PersonName
w:st="on">xymon@xymon.com</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [Xymon] Monitoring a
simple cluster</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>I have a couple of
“traditional” active/passive clusters. For items that need to
be present on all nodes, I sue the standard monitoring available with xymon and
it’s client. For things that need to only appear on the active node,
I handle in one of two ways. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Way #1 - I
created striped down Xymon clients which runs with the application within the
cluster. I have HP service Guard clusters, so this is easy to do within
their frame work of scripts handling most everything. I create a
new client within the disks which migrate within the cluster, edit the
xymonclient-<O/S>.sh script within this new client directory
structure and assign an IP/host in the hosts.cfg which matches the IP which
floats within the cluster. I pull all the CPU, memory, etc. stuff out of
the new xymonclient.sh and focus on the disks, procs, ports, etc. which tend to
be very application specific. I let standard Xymon take care of the
rest. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Way #2 – I
setup the IP/Host which matches the floating IP under cluster control and run
scripts from the Xymon server pointing at the floating IP. The scripts
report status to the Xymon server using the Name associated with the
floating IP, so to the outside observer it looks like a new server, but its
just an application running where it needs to under cluster control. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>For check just SMTP
the second might be the way to go, as you could just use the standard Xymon
SMTP test to see that SMTP is running on the IP which floats.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>
……Bruce<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=91595065-c0ec-47be-9704-a424ca75d2ac><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=91595065-c0ec-47be-9704-a424ca75d2ac><strong><b><font size=2
color=black face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:black'>Bruce White</span></font></b></strong><o:p></o:p></p>
<p class=91595065-c0ec-47be-9704-a424ca75d2ac><font size=2 color=gray
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:gray'>Senior
Enterprise Systems Engineer | Phone: 1-630-671-5169 | Fax: 630-893-1648
| bewhite@fellowes.com | <a href="http://www.fellowes.com/">www.fellowes.com</a></span></font><o:p></o:p></p>
<p class=91595065-c0ec-47be-9704-a424ca75d2ac><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=91595065-c0ec-47be-9704-a424ca75d2ac><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><img border=0 width=514
height=42 id="_x0000_i1025" src="cid:image001.jpg@01CD504F.9426ED70"
align=baseline> <o:p></o:p></span></font></p>
<p class=91595065-c0ec-47be-9704-a424ca75d2ac><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=91595065-c0ec-47be-9704-a424ca75d2ac><font size=1 color=gray
face=Arial><span style='font-size:7.5pt;font-family:Arial;color:gray'>Disclaimer:
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Thank you. Fellowes, Inc.</span></font><o:p></o:p></p>
<p class=91595065-c0ec-47be-9704-a424ca75d2ac><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
xymon-bounces@xymon.com [mailto:xymon-bounces@xymon.com] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Dan Smith<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, June 21, 2012
12:17 PM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">xymon@xymon.com</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> [Xymon] Monitoring a
simple cluster<o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Red Hat 5.8 server, 5.5 clients. Xymon 4.3.7 clients
and server. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am trying to put together a quick cluster monitor using
depend and combos, but I think I’m stuck. Has anyone else done
this?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have two servers: smtp01 and smtp02 that are in an
active/passive cluster.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The smtpd process only runs on the server that is active,
but there are other processes that need to be monitored on both hosts (e.g.
clurgmgrd).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I would like to go red and have an alert if one of the
required processes goes down on either server, but I only want an alert if the
active node of the cluster has a problem with the smtpd process.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>My initial idea was to have procs go red for clurgmgrd and
yellow on smtpd, use NOPROPYELLOW, and then use a combo so I could see what
host was active…<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>hosts.cfg:<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.5in;mso-list:l0 level4 lfo2'><![if !supportLists]><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><span
style='mso-list:Ignore'>1.2.3.4<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>smtp01 #
NOPROPYELLOW:procs<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.5in;mso-list:l0 level4 lfo2'><![if !supportLists]><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><span
style='mso-list:Ignore'>1.2.3.5<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>smtp02 #
NOPROPYELLOW:procs<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.5in;mso-list:l0 level4 lfo2'><![if !supportLists]><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><span
style='mso-list:Ignore'>1.2.3.6<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>smtpHA #
smtp<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>analysis.cfg:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>HOST=smtp01<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>
PROC clurgmgrd<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>
PROC smtpd<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>HOST=smtp02<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>
PROC clurgmgrd<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>
PROC smtpd<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>combo.cfg:<font color=navy><span style='color:navy'> </span></font><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>smtpHA.procs = (smtp01.conn && smtp01.procs) ||
(smtp02.conn && smtp02.procs)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Unfortunately a yellow status is equal to a 1 for the combo,
so even if both sides of the cluster were down, the combo would still show as
up (green&&yellow is 1&&1).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Then I thought I could cover the scenario by making a
“depends” test, but depends seems to be focused on disabling tests
if another status is red…which doesn’t work either since I
don’t want the page to go red.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>This isn’t a huge issue because the smtp poll on
smtpHA will trigger red if both nodes are down, but it seems like there should
be an easy way to do this.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Am I making it more complicated than it needs to be, or am I
better writing a custom monitor?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>-dan<o:p></o:p></span></font></p>
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