Linux

Monitoring Squid with Zenoss

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I recently realized that even though I was monitoring my Squid “system” very well, I wasnt monitoring Squid well. I had little knowledge about cache-hit ratios, how much WAN traffic I was saving, how much I was speeding up (or slowing down) end-users. I quick googling and I found http://tanso.net/zenoss/squid/. This link explains how to enable […]

Linux

Sending email from syslog events

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Historically, I have been monitoring my F5 devices using syslog and Zenoss. Syslog on the F5 devices forwards to my Zenoss system, which then parses the alerts by severity, source, and regex string comparison (node up/node down). My Zenoss system died, so I started looking for other methods of performing the same tasks. Initially I […]

Monitoring

Synchronizing ZenPacks across multiple collectors

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I have setup multiple Zenoss collectors in my environment, and one of the issue I ran into was keeping the customizations and ZenPacks in sync. Unfortunatly there is no “out of the box” way to do this (maybe in Zenoss enterprise, but not in Zenoss core). Initially I used SCP to copy the files from […]

Monitoring

Configuring multiple Zenoss collectors

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This post discusses how to configure multiple Zenoss collectors for centralized monitoring and alerting. These instructions are inspired by http://www.zenoss.com/Members/fdeckert/how-to-install-distributed-collectors/. Many of the tasks below reference $ZENHOME, which can be found by logging in as the zenoss user, but the tasks may need to be run as root. Install zenoss on ServerB, but do not […]

Monitoring

Monitoring and automatically restarting services in Zenoss

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Now we need to monitor a service – say the Print Spooler – and we want to know when it fails. Actually, since we are lazy and overworked, we want to automatically restart the service, and only be alerted if it doesnt restart. Monitor a Windows ServiceEnabling monitoring of Windows services is quite intuitive, below […]

Monitoring

Changing the graphs shown under the Perf tab in Zenoss

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The default Windows class in Zenoss has several SNMP based performance graphs included. Since I (and most Windows admins) don’t use SNMP, I want to replace these with custom graphs built on WMI. I have already created my Performance Templates, and now I need to select them to be the default performance graphs. Browse to […]

Monitoring

Configuring email in Zenoss

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Where would we be without email…. The world would slow to a crawl. So how do we configure Zenoss to send us emails? Enable Emails In the web console, select Management | Settings On the Settings tab, enter the SMTP Host and FROM: addresses, click Save Setting a user for email Click the Users tab […]

Monitoring

Windows Performance Monitoring in Zenoss using WMI

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Now that we have our ZenPack, we need to begin making it do something for us. The goal here is to monitor Windows server performance using WMI and alert on overage. To do this we are going to start by importing a Perl script to access WMI. Importing the Perl script There is a ZenPack […]

Monitoring

Creating a ZenPack in Zenoss

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So we have Zenoss installed and want to begin customizing it. The first thing we want to do is create a ZenPack to hold all customizations, that way we can backup and export the customizations and import them elsewhere as needed. Create the ZenPack In the task pane, select Management | Settings Select the ZenPacks […]