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Nagios

Nagios monitoring on AWS Autoscaling group instances

October 31, 2015 by Sharad Chhetri 24 Comments

Setting Nagios monitoring alerts on instances behind the AWS Elastic Load Balancer (ELB) is always tricky part. In this post, we will learn how we can monitor the instances which are created by autoscaling policy and running behind the ELB. We expect our reader do have good knowledge on scripting, nagios and AWS comptuting. This […]

Filed Under: Linux Tagged With: Nagios

Send nagios report as pdf file via email

August 26, 2015 by Sharad Chhetri 8 Comments

The tutorial will give you idea, how you can send Nagios Report as pdf file via email. We will achieve this requirement, with the help of script and using wkhtmltopdf command line tool. We will set the Nagios Report script in crontab and send it via email to receiver person/team. In our previous post we […]

Filed Under: Linux Tagged With: Nagios

Nagios Plugin : check ssl certificate expiry date

December 11, 2014 by Sharad Chhetri 13 Comments

We have created a Nagios plugin called check_ssl_cert_expiry . The nagios plugin will send the alert (warning/critical) before SSL Certificate expiry date. We have tested this plugin to check HTTPS website URL. It is working very well. Why we require check_ssl_cert_expiry nagios plugin To know how many days are left before date of expiration of […]

Filed Under: Monitoring Server Tagged With: Nagios

check_ELBinstance : Nagios Plugin to check instances attached with ELB

November 27, 2014 by Sharad Chhetri 3 Comments

Recently I created a new nagios plugin which check the no. of instances attached in ELB (Elastic Load Balancer) . Here we are talking about ELB in AWS (Amazon Web Service) Cloud. Elastic Load Balancing automatically distributes incoming application traffic across multiple Amazon EC2 instances in the cloud. Details of check_ELBinstance nagios plugin Requirement : […]

Filed Under: Monitoring Server Tagged With: Nagios

How to install Nagios on CentOS 7 / RHEL 7

August 29, 2014 by Sharad Chhetri 5 Comments

In this tutorial we will learn about how to install Nagios 4 on CentOS 7/RHEL 7 . To install nagios we will use its stable source code, which is avaible at Nagios site. Nagios is one the most popular, stable and reliable monitoring tool. It is available as free and Open source package called Nagios […]

Filed Under: Linux, Monitoring Server Tagged With: centos 7, Nagios

How to install Nagios 4 from source on Ubuntu 14.04 LTS

August 25, 2014 by Sharad Chhetri 22 Comments

In this tutorial we will learn, how to install Nagios 4 from source on Ubuntu 14.04 LTS. In this practical I have seen some problems while Nagios core 4 installation. Because in Ubuntu 14.04 LTS is shipped with new Apache 2.4 version ,it was quite obvious some extra steps we have to do. I will […]

Filed Under: Linux, Monitoring Server Tagged With: Nagios, ubuntu

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Sharad Chhetri is an experienced Linux - Cloud Engineer & freelancer. Working on Open Source Technology since RHEL 4.0 (Red Hat Enterprise Linux). He loves sharing the knowledge which earned from real scenarios. Don't be surprised if you find him in technology seminars and meetup groups. You can contact him on email for freelance projects at admin@sharadchhetri.com. Read More…

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