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How to Monitor Solr servers and Solr cluster

Solr Monitor is a unique tool developed by one of the folks in Quikr and published  under open source Licence. This is the only tool available currently in the open source community to monitor the solr servers. Solr is an open source enterprise search service from the Lucene project. Solr is written in Java and(…)

Troubleshoot TCP/IP connectivity issues with PortQry – Port Scanner Version 2.0

Portqry.exe is a command-line utility that you can use to help troubleshoot TCP/IP connectivity issues. Portqry.exe runs on Windows 2000-based computers, on Windows XP-based computers, and on Windows Server 2003-based computers. The utility reports the port status of TCP and UDP ports on a computer that you select. Portqry.exe reports the status of a TCP/IP(…)

How to Install bwshare as a DSO module for Apache 2.

mod_bwshare is a bandwidth throttling and monitoring per client IP address. The mod_bwshare module accepts or rejects HTTP requests from each client IP address based on past downloads by that client IP address. If the HTTP client’s download rate exceeds specified levels, the reponse to the HTTP client is an HTML warning message. To install bwshare(…)

How to Analyze web traffic with awstats

Installing awstats from the ports # cd /usr/ports/www/awstats # make install Awstats installs to /usr/local/www/awstats and needs to following lines added to your apache httpd.conf # # Directives to allow use of AWStats as a CGI # Alias /awstatsclasses “/usr/local/www/awstats/classes/” Alias /awstatscss “/usr/local/www/awstats/css/” Alias /awstatsicons “/usr/local/www/awstats/icons/” ScriptAlias /awstats/ “/usr/local/www/awstats/cgi-bin/” # # This is to permit(…)

How to Configure and Monitor Cisco IOS versions with Nagios

This tutorial describes one approach of monitoring the patch compliance of network devices. The method is simple: Our network devices are already configured for SNMP monitoring. We are getting the usual performance and availability indicators using ping, load, memory and environment checks (power, fans OK). By leveraging the existing SNMP configuration of Nagios, we can(…)

How to install Ganglia – An open source monitoring

Ganglia is an open source monitoring project, designed to scale to thousands of nodes, that started at UC Berkeley. Each machine runs a daemon called gmond which collects and sends the metrics (like processor speed, memory usage, etc.) it gleans from the operating system to a specified host. The host which receives all the metrics can display(…)

How to Install and Configure MRTG

The Multi Router Traffic Grapher (MRTG) is a tool to monitor the traffic load on network-links. MRTG generates HTML pages containing PNG images which provide a LIVE visual representation of this traffic. MRTG is basically used for generating graphs to a device, network host, IP-based appliances for monitoring usage, live data and statistics usage. This(…)

How to use Nmap for Port Scanning in Linux

How to know which port is open from unmanaged remote host? How to determine running application and services from remote host? How to do basic port scanning against a host? How to confirm ports opened from remote host? Here are a several ways to do port scanning and know which port/services are currently opened from(…)

Nagios Monitoring – How to install and generic setup

A lot of powerful monitoring tools are freely available from linux world. One of them is Nagios. Nagios is a fairly complex linux monitoring tool that determines current status of target host or equipment. Two good things about Nagios is that Nagios supports web-enabled administration page and user view-only mode account. The other one is(…)

How to Install IfTop Bandwidth Monitoring Tool

Here’s another bandwidth monitoring tool from linux console. Iftop is another console-based bandwidth monitoring tool available from linux. Iftop offers more feature that can be quite useful on monitoring bandwidth from console terminal. When executed, this bandwidth monitoring tool displays source and destination hosts currently passing thru its current selected interface(s).  Iftop can also display ports(…)

How to Install IPTraff LAN Monitoring Tool

IPTraf is a console-based network statistics utility and IP LAN monitoring tool for Linux. IPTraf gathers a variety of figures such as TCP connection packet and byte counts, interface statistics and activity indicators, TCP/UDP traffic breakdowns, and LAN station packet and byte counts. IPTraff LAN Monitoring Tool IPTraf supports a wide variety of network statistics and(…)

How to Install NetSpeed Traffic Monitoring Applet

Now, if you want to monitor your network interface from GNOME X, here’s another linux network interface usage and monitoring tool you can use and install. Netspeed is a little GNOME-applet that shows how much traffic is currently passing thru on your specified network devices.  NetSpeed monitoring applet can show current network incoming and outgoing traffic from(…)