<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 12 (filtered medium)"> <style>  </style>  </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> I need some help understanding the check_cluster plugin, please. I’m using version 1.4.13 of the plugins on Nagios 3.10, all compiled from source on 64-bit CentOS 5.2. We use VMWare ESX clusters, and I’d like the hosts in Nagios that happen to be virtual machines to have one parent instead of a list of parents comprising every ESX host in the cluster. Recently, an ESX host was moved from one cluster to another, so I had to change a lot of parents. If there’s a better way to represent VMs and their hosts, I’m open to suggestions too.<o:p></o:p> <o:p> </o:p> I don’t have any problem running it as the Nagios user from the command line and feeding it states, like so:<o:p></o:p> ./check_cluster --host --data=0,0,2,1 --warning=0 --critical=1<o:p></o:p> CLUSTER CRITICAL: Host cluster: 2 up, 1 down, 1 unreachable<o:p></o:p> ./check_cluster --host --data=0,0,0,0 --warning=0 --critical=1<o:p></o:p> CLUSTER OK: Host cluster: 4 up, 0 down, 0 unreachable<o:p></o:p> ./check_cluster --host --data=0,0,0,1 --warning=0 --critical=1<o:p></o:p> CLUSTER WARNING: Host cluster: 3 up, 1 down, 0 unreachable<o:p></o:p> <o:p> </o:p> Adding --verbose just says “check_cluster - Warning: start=0 end=0; Critical: start=0 end=1” first.<o:p></o:p> <o:p> </o:p> However, if I try anything with the $HOSTSTATEID$ macro, everything is always OK, even if I just make up host names:<o:p></o:p> [./check_cluster --host --data=$HOSTSTATEID:duck$,$HOSTSTATEID:cow$,$HOSTSTATEID:chicken$ --warning=0 --critical=1<o:p></o:p> CLUSTER OK: Host cluster: 3 up, 0 down, 0 unreachable<o:p></o:p> <o:p> </o:p> I thought maybe macros work better when executed by Nagios, so I added check_host_cluster command a host with that as its check_command.<o:p></o:p> define command {<o:p></o:p> command_name check_host_cluster<o:p></o:p> command_line $USER1$/check_cluster --host --label=$HOSTNAME$ --warning=$ARG1$ --critical=$ARG2$ --data=$ARG3$<o:p></o:p> }<o:p></o:p> <o:p> </o:p> define host {<o:p></o:p> use linux-server<o:p></o:p> host_name ProductionCluster1<o:p></o:p> alias Production Cluster 1<o:p></o:p> address 127.0.0.1<o:p></o:p> parents gisesx1,gisesx3,gisesx4<o:p></o:p> check_command check_host_cluster!1!2!$HOSTSTATEID:foo1$,$HOSTSTATEID:foo3$,$HOSTSTATEID:foo4$<o:p></o:p> hostgroups nogsupport<o:p></o:p> }<o:p></o:p> <o:p> </o:p> The check_interval for the linux-server template is set to 3. I made the assumption that it didn’t matter what I set the address to since I’m only interested in the state of other hosts, and it’s not being referenced in the check_command.<o:p></o:p> <o:p> </o:p> It shows up in the host information web page as being up, but I don’t have any hosts named foo:<o:p></o:p> Host Status: <o:p></o:p> UP <o:p></o:p> (for 0d 3h 41m 9s+)<o:p></o:p> Status Information: CLUSTER OK: ProductionCluster1: 3 up, 0 down, 0 unreachable<o:p></o:p> <o:p> </o:p> I had better luck with check_icmp, but it looks like it goes straight to CRITICAL if one host is down.<o:p></o:p> </div> <html> <head> <meta http-equiv="Content-Language" content="en-us"> <meta name="GENERATOR" content="Microsoft FrontPage 5.0"> <meta name="ProgId" content="FrontPage.Editor.Document"> <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> <title>New Page 1</title> </head> <body> This message (including any attachments) is intended only for the use of the individual or entity to which it is addressed and may contain information that is non-public, proprietary, privileged, confidential, and exempt from disclosure under applicable law or may constitute as attorney work product. If you are not the intended recipient, you are hereby notified that any use, dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, notify us immediately by telephone and (i) destroy this message if a facsimile or (ii) delete this message immediately if this is an electronic communication. Thank you. </body> </html> </body> </html>