Hai Dam

One of the things I love the most with AWS is  auto-scaling . You choose an AMI, set some parameters and AWS will spin instances up and down whenever a threshold is breached. But with all these instances spinning up and down there are some unknowns. For example, what is the IP address of the new instance? Its host name? This can be critical when other components of your infrastructure are dependent on knowing these parameters. I had this problem when I started to use  Zabbix  as the monitoring system. At first it seemed like a complicated one, but Zabbix has a wonderful feature called  Auto Registration  which can be used exactly for this situation. I will try to show how to configure auto registration both on the client (EC2 instance running Ubuntu 14.04) and on the Zabbix server (Zabbix Server 2.4.2). Zabbix-agent Installation and Configuration Let’s start with installing zabbix-agent on the Ubuntu client: 1 2 $ sudo apt-get update $ sud...

Many times, when I am debugging an environment, I find myself opening a lot of web browser tabs and windows to get metrics and see graphs from a number of data sources. It is a tiresome and prone to error way to go as each metric can be presented in a different timezone, and there is no way to stack them together. Grafana  is an excellent solution to this problem as it can aggregate and mix many data sources and present them in a rich way. In this post I will show how to aggregate and mix metrics from Zabbix and AWS CloudWatch. Installing Grafana We will install Grafana 2.5.0 on an Ubuntu 14.04 server. Full installation documentation can be found  here . First, download and install the  .deb  package and its dependencies: 1 2 3 $ wget https://grafanarel.s3.amazonaws.com/builds/grafana_2.5.0_amd64.deb $ sudo apt-get install -y adduser libfontconfig $ sudo dpkg -i grafana_2.5.0_amd64.deb Now, start the service: 1 $ ...