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<p class=MsoNormal>Hi, I’ll start by admitting n00bness but I have
googled a lot about nagios and I hope that this will not duplicate a previous
mail.  Be kind!<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>I am looking to create a monitoring model that does not
cleanly fit into anything I have seen, and before I spend days getting it all
to (not) work I wanted to validate my plans.  Basically, I have a lot of
remote, temporary events sites popping up on ADSL or behind multiple NATs (ie
outbound access to the Internet only) and going after a few weeks.  On
site infrastructure will go up very quickly and come down equally quickly [1].<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>What I want to be able to do is have a layout so that:<o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>         
</span></span><![endif]>I can access a view of the local site devices site from
a local event server and a view of all the sites from the central server<o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>         
</span></span><![endif]>All the polling happens from the local site servers and
the central server only pings the external ADSL IPs of each site to check if
they are alive<o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>         
</span></span><![endif]>All alerts are sent out from the central server via
email, sms etc<o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>         
</span></span><![endif]>Most checks will just be pings or receipt of
syslog/snmp traps from local devices<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>I am assuming I will need to play with NSCA and have the local
server doing active checks, exporting stats to a file, and the central server
doing passive checks, with NCSA syncing the stats to the central server. 
However, ADSL polling stats for each site need to be synced back to the local
servers if they are available so the on site view shows those stats too<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>Some things I am not sure about though: a) the line above
   b) that this is possible with only outbound access to the
Internet from the local server   c) how management of configured
devices is kept in sync between the local and central servers   d)
how the central server can have suppression/correlation of events so that a
remote site being down shows just “site X down” instead of 100
alerts about each element of the site being down<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>The key part of this is that there can be really complicated
parts to the setup, but the day to day operation must be as simple as possible,
ie I can’t expect users to have instructions like “log into linux,
use vi to change configs, kill sighup  and use rsync to the manager to
update it”<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>Is this just far too complicated an idea?<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>Thanks in advance<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>--Chris<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>[1] on a side note on advice on how to best to get very
simple non technical users to be able write monitoring configs would be
appreciated<o:p></o:p></p>

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