Adjust Apache ServerLimit and MaxClient Rumi, January 6, 2013 MaxClients actually tells the apache to allow this many concurrent clients. Normally this limit is at 150. You can change this limit by editing your httpd.conf file. httpd.conf is normally located at /etc/httpd/conf/httpd.conf nano /etc/httpd/conf/httpd.conf ServerLimit directive to let the value of MaxClients above 256 work. By deafult ServerLimit is… Continue Reading
Monitoring multiple server using Munin on Debian/Ubuntu Distribution Rumi, January 6, 2013 This tutorial was written for Debian Etch, but the configuration should apply to other distributions with little changes as well. I want to say first that this is not the only way of setting up such a system. There are many ways of achieving this goal but this is… Continue Reading
Openfiler Install NRPE Rumi, January 1, 2013January 1, 2013 INSTALL Compiler Dependency conary update gcc (a C-Compilter to compile the NRPE) conary update glibc:devel conary update openssl:devel conary update xinetd Add User ——– useradd nagios passwd nagios INSTALL NRPE ———— cd /usr/local/src/ wget http://downloads.sourceforge.net/project/nagios/nrpe-2.x/nrpe-2.13/nrpe-2.13.tar.gz?r=http%3A%2F%2Fexchange.nagios.org%2Fdirectory%2FAddons%2FMonitoring-Agents%2FNRPE–2D-Nagios-Remote-Plugin-Executor%2Fdetails&ts=1342427280&use_mirror=nchc tar xzfv nrpe-2.12.tar.gz cd nrpe-2.12 Continue Reading
Centos 5 Product Specification Rumi, December 27, 2012December 27, 2012 his page contains an overview on the capabilities and limits of CentOS. End of Lifetime (EOL) Dates CentOS41 CentOS5 CentOS6 Full Updates2 February 29th, 2009 Q1 2014 Q2 2017 Maintenance Updates3 February 29th, 2012 March 31st, 2017 November 30th, 2020 Architecture CentOS4 CentOS5 CentOS6 Latest Release 4.9 5.8 6.3 Supports… Continue Reading
apt-get drush install on Debian Rumi, December 25, 2012December 25, 2012 These are the installation instructions that are recommended on Debian. Aegir dependencies (Apache, MySQL, PHP…) are also automatically installed. If you are managing the installation from a remote Windows computer, well-known open source tools for this task are for example PuTTY (a SSH client for command line), and WinSCP (a… Continue Reading
Mercury on Ubuntu 10.04 (Lucid) Rumi, December 22, 2012December 22, 2012 This high performance Drupal system is based on the work of Project Mercury. Project Mercury aims to increase the performance and ability of Drupal powered websites to respond to increased load. This document leverages the same collection of popular open source tools including the Varnish Accelerating Proxy, the APC bytecode… Continue Reading
MySQL Master-Master Replication with Heartbeat Rumi, December 5, 2012December 5, 2012 Setting Up The Two Base Systems In this setup there will be one master server (which runs the ISPConfig control panel interface) and one slave server which mirrors the web (apache), email (postfix and dovecot) and database (MySQL) services of the master server. To install the clustered setup, we need… Continue Reading
Install Varnish on CentOS/RedHat/SL 5 or 6 Rumi, December 5, 2012December 5, 2012 Varnish Cache is a web application accelerator also known as a caching HTTP reverse proxy. It is installed in front of the web application and it speeds up the web application significantly. Since varnish is not available in CentOS repo, you have to add the EPEL repo. However Varnish suggests… Continue Reading
Configuring A High Availability Cluster (Heartbeat) On CentOS Rumi, December 4, 2012 This guide shows how you can set up a two node, high-availability HTTP cluster with heartbeat on CentOS. Both nodes use the Apache web server to serve the same content. Pre-Configuration Requirements Assign hostname node01 to primary node with IP address 172.16.4.80 to eth0. Assign hostname node02 to slave node… Continue Reading