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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>My company is looking to use Xymon in production. It’s my job to operationalize it: test it, write about its behavior, document any issues, and create documentation for our run teams.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’ve found a behavior of the Xymon server’s service that I’m trying to understand: It maintains the host name to OSType mapping until the service is restarted. For example:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Edit the server’s hosts.cfg file. Insert a non-existent server ‘server01’ and give it a fake/real IP.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Edit the server’s client-local.cfg file. Create several entries within for different OS types:<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>a.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Linux<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>b.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Win32<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>c.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>AIX<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>d.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Etc…<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Make sure that each section for the OSType contains a unique string or command. You will use this to identify which OSType the Xymon server service identified ‘server01’ as. <o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>4.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Wait for ‘server01’ to show up on the web site. It won’t have any status data to report yet. This is OK. NOTE: Do not restart the Xymon service.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>5.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Find a computer (real/VM) to pretend to be ‘server01’. It doesn’t matter which OS the client has, just as long as you are comfortable running custom scripts upon it.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>6.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>From ‘server01’, issue this command, replacing OSType and HostClass with your favorite values:<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>a.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>“client server01.<OSType> <HostClass>”<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>7.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>If you’re lucky, the Xymon server will respond back with the appropriate unique string for your OSType from the client-local.cfg file.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>8.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Now, change OSType and rerun the command from the same client machine. For example, if you first used “win32”, now use “linux” instead. <o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>a.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>“client server01.win32 <HostClass>”<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>b.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>“client server01.linux <HostClass>”<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>9.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Did the Xymon server respond with the unique string from the new/second OSType? I betcha it didn’t. It’s still responding with the unique string from the first OSType you used, right?<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>10.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Edit the server’s hosts.cfg file. Insert a non-existent server ‘server02’ and give it a fake/real IP.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>11.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Wait for ‘server02’ to appear in the web page.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>12.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Log on to the server as the user ‘xymon’ and issue a rename command:<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>a.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>./server/bin/xymon 127.0.0.1 “rename server01 server02”<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>13.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Wait for the web page to update, showing status information for ‘server02’, but not ‘server01’.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>14.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Now, issue the following commands from the client, but use the new/second OSType for both:<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>a.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>“client server01.<OSType> <HostClass>”<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>b.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>“client server02.<OSType> <HostClass>”<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>15.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Did the Xymon server respond to ‘server01’ with the original/first OSType you used? When I performed these steps, I got back the unique string for the original/first OSType, but I was expecting to get back the new/second OSType.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>16.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Did the Xymon server respond to ‘server02’ with the new/second OSType you used? When I performed these steps, I got back the unique string for the new/second OSType.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>17.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Edit the server’s hosts.cfg file. Remove ‘server01’ and ‘server02’.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>18.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Log on to the server as the user ‘xymon’ and issue a rename commands:<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>a.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>./server/bin/xymon 127.0.0.1 “remove server01”<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>b.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>./server/bin/xymon 127.0.0.1 “remove server02”<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>19.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Wait for the web site to stop showing server01 and server02.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>20.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Edit the server’s hosts.cfg file. <o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>a.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Insert a non-existent server ‘server01’ and give it a fake/real IP.<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>b.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Insert a non-existent server ‘server02’ and give it a fake/real IP.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>21.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Wait for ‘server01’ and ‘server02’ to appear in the web page.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>22.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Now, issue the following commands from the client, but use the new/second OSType for both:<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>a.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>“client server01.<OSType> <HostClass>”<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>b.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>“client server02.<OSType> <HostClass>”<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>23.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Did the Xymon server respond to ‘server01’ with the original/first OSType you used? When I performed these steps, I got back the unique string for the original/first OSType, but I was expecting to get back the new/second OSType.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>24.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Did the Xymon server respond to ‘server02’ with the new/second OSType you used? When I performed these steps, I got back the unique string for the new/second OSType.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>25.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Log on to the Xymon server and restart the Xymon service.<o:p></o:p></p><p class=MsoNormal style='margin-left:.25in'><o:p> </o:p></p><p class=MsoNormal>Go back through the steps above, you’ll see that after a fresh restart, the Xymon service will parse the “client” string, discover the OSType, and maintain an OSType <--> Hostname association until the service is restarted. Is this the expected behavior? I can see how this behavior would get in the way of architecting and rapid testing of a client-local.cfg file with multiple OSType, HostClass, and Hostname entries.<o:p></o:p></p><p class=MsoNormal style='margin-left:.75in'><o:p> </o:p></p><p class=MsoNormal style='margin-left:.75in'><o:p> </o:p></p></div></body></html>