Posted by suvi under
Monitoring
New tutorial added to HowtoMatrix database. Install and Configure Cacti monitoring tool in Ubuntu 9.10 (Karmic) Server Cacti is a complete network graphing solution designed to harness the power of RRDTool’s data storage and graphing functionality. Cacti provides a fast poller, advanced graph templating, multiple data acquisition methods, and user management features out of the [...]
Posted by suvi under
Monitoring,
Networking
New tutorial added to HowtoMatrix database. Network Monitoring Appliance table align=left cellpadding=0 cellspacing=0 width=42 height=40 style=margin-top:0px;margin-bottom:0px;trtdimg class=teaser-image-odd src=http://images.howtoforge.com/images/teaser/ubuntu.gif width=39 height=40 alt= //td/tr/tablepbNetwork Monitoring Appliance/b/p pMy ambition was to implement a small (better tiny) appliance for monitoring network health and network resources, short and longtime trends, running under VMware Server or VMware ESX. So I had [...]
Posted by suvi under
Debian,
Monitoring
MultiTail lets you view one or multiple files like the original tail program. The difference is that it creates multiple windows on your console (with ncurses). It can also monitor wildcards: if another file matching the wildcard has a more recent modification date, it will automatically switch to that file. That way you can, for [...]
Posted by suvi under
Hardware,
Linux,
Monitoring
Hardware is getting amazingly fast. But sometimes it seems like software gets slower faster than hardware speeds up. So why do so many apps feel poky? In this series, I’ll look at some of the ways you can examine your system to see what’s taking up resources, and offer some tips on slimming your system [...]
Posted by suvi under
Monitoring,
Ubuntu
This guide shows how to install and configure Smokeping on Ubuntu 9.04 to monitor network latency. From the Smokeping web site: “SmokePing is a deluxe latency measurement tool. It can measure, store and display latency, latency distribution and packet loss. SmokePing uses RRDtool to maintain a longterm data-store and to draw pretty graphs, giving up [...]
Nagios is a free opensource enterprise-class monitoring system released under GPL License. It allows you to gain insight into your network and fix problems before customers know they even exist. It’s stable, scalable, supported, and extensible. Nagios is Stable, Reliable, and Respected Platform with 10 years in development scaling to 100,000+ nodes. From my personal [...]
Posted by suvi under
Monitoring,
Networking
Nagios is the industry standard in enterprise-class monitoring for good reason. It allows you to gain insight into your network and fix problems before customers know they even exist. It’s stable, scalable, supported, and extensible. Read more at Ubuntu Geek
Simple bash script to monitor a webserver on different ports (here smtp, dns, http & https but it can be customized); I’m sure there are over 100 available programs doing this but I wanted something with small memory usage. Also, I only wanted to be notified once, notifications are received by SMS on my cell. [...]
Install of Amavisd-New on Ubuntu 8.10 One of the most frustrating problems with setting up any mail server is the configuration required for anti-virus protection and Spam checking. Amavisd-new provides an excellent tool to help in setting that up. This is a step-by-step process in providing your mail server, the example is Ubuntu 8.10, with [...]
Nagios is a host and service monitor designed to inform you of network problems before your clients, end-users or managers do. It has been designed to run under the Linux operating system, but works fine under most *NIX variants as well. The monitoring daemon runs intermittent checks on hosts and services you specify using external [...]
Posted by suvi under
Monitoring,
Networking
Squid Graph is a Perl script that takes your Squid proxy server access.log file and generates a Web page showing you statistics about your proxy accesses and transfers, including the number of cache hits and the percentage of requests that were served by the cache alone. With Squid Graph you can see how well tweaks [...]
Posted by suvi under
CentOS,
Monitoring
In this article I will describe how you can monitor your CentOS 5.2 server with munin and monit. munin produces nifty little graphics about nearly every aspect of your server (load average, memory usage, CPU usage, MySQL throughput, eth0 traffic, etc.) without much configuration, whereas monit checks the availability of services like Apache, MySQL, Postfix [...]
Posted by suvi under
Monitoring
As an administrator you may be face with the task of constantly monitoring web servers, mail servers, ftp servers, etc. Basically, your organization wants all of their servers up and running all of the time. Nagios 3 offers an easy set up and configuration to make this happen so that you can Read more at [...]
Posted by suvi under
Monitoring
System monitoring tool Nagios offers a powerful mechanism for receiving events and commands from external applications. External commands are usually sent from event handlers or from the Nagios Web interface. You will find external commands most useful when writing event handlers for your system, or when writing an external application that interacts with Nagios. Read [...]
Posted by suvi under
Monitoring,
Server,
Ubuntu
Cacti is a complete network graphing solution designed to harness the power of RRDTool’s data storage and graphing functionality. Cacti provides a fast poller, advanced graph templating, multiple data acquisition methods, and user management features out of the box. All of this is wrapped in an intuitive, easy to use interface that makes sense for [...]