winnt_accept: Asynchronous AcceptEx failed.

[Sun May 26 12:23:42.649103 2013] [mpm_winnt:notice] [pid 1356:tid 352] AH00424: Parent: Received restart signal — Restarting the server. [Sun May 26 12:23:43.616304 2013] [mpm_winnt:notice] [pid 1356:tid 352] AH00455: Apache/2.4.4 (Win64) OpenSSL/1.0.1e PHP/5.4.14 configured — resuming normal operations [Sun May 26 12:23:43.616304 2013] [mpm_winnt:notice] [pid 1356:tid 352] AH00456: Server built: Feb 22 2013 22:08:37 [Sun May […]

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How to change a network interface name on CentOS 7

Traditionally, network interfaces in Linux are enumerated as eth[0123…], but these names do not necessarily correspond to actual hardware slots, PCI geography, USB port number, etc. This introduces a unpredictable naming problem (e.g., due to undeterministic device probing behavior) which can cause various network misconfigurations (e.g., disabled interface or firewall bypass resulting from unintentional interface […]

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Web server benchmarking tools for Linux

As far as web server performance is concerned, there are many different factors at play, e.g., application design, network latency/bandwidth, web server configuration, caching, hardware capability, server load, etc. To compare and optimize web server performance under such a wide array of factors, we often perform load test (or stress test) using a web server […]

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CentOS 7 & firewallD

Usually one of the first things we want to do with a new server is to restrict access to SSH -service. So far it seems that everyone advices “disable firewallD, install iptables service and use it like you’ve always used” but how about trying to get along with this new tech? Restricting access to SSH […]

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Ngix web

yum -y install make gcc gcc-c++ autoconf wget http://downloads.sourceforge.net/project/pcre/pcre/8.36/pcre-8.36.tar.gz?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fpcre%2Ffiles%2Fpcre%2F8.36%2F&ts=1419041744&use_mirror=softlayer-sng mv pcre-8.36.tar.gz\?r\=http\:%2F%2Fsourceforge.net%2Fprojects%2Fpcre%2Ffiles%2Fpcre%2F8.36%2F pcre-8.36.tar.gz groupadd www useradd -g www www yum repo for ngix [root@test1 software]# cat /etc/yum.repos.d/ngix.repo [nginx] name=nginx repo baseurl=http://nginx.org/packages/centos/6/$basearch/ gpgcheck=0 enabled=1 [root@test1 software]# yum install nginx wget http://nginx.org/download/nginx-1.7.8.tar.gz tar zxvf pcre-8.36.tar.gz cd pcre-8.36 ./configure make && make install cd nginx-1.7.8 yum -y install openssl* […]

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MySQL: changing the storage location for databases

By default when you install MySQL it stores databases on the C drive, you can change this during installation but perhaps you forgot to change the data files path during installation or completely missed the option to do this, or perhaps you used the Web Platform Installer which doesn’t give you any option to change […]

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Logical Volume Snapshots

Logical Volume Snapshots Objective:  Creating and restoring manual logical volume snapshots. Environment: CentOS release 6.3 (32-bit). Descriptions: By LV snapshot you will be able to freeze your logical volumes. In other words, you can easily backup and rollback to a original logical volume state. This is almost similar to VMware where you can the snap shot […]

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ISO – Mount/Unmount

ISO – Mount/Unmount Objective:  1. Mount the ISO to CD/DVD, then mount it to file system. 2. Create an ISO from the CD/DVD, then mount to file system. 3. Created ISO will be mounted, and will be mounted as an file system. Environment: CentOS release 6.3 (32-bit). Implementations:   – Mounted my ISO image to CD/DVD, […]

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Root login on Oracle Solaris 11

Once after your installation is completed, you will not be able to login directly to the console as the user “root”. user root should be assigned role as a normal user. Below are the very few steps to enable root login. 1. #vim /etc/ssh/sshd_config [ change parameter to yes ]       PermitRootLogin yes   […]

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Kernel Crash Report/Crash Dump Analysis

Kernel Crash Report/Crash Dump Analysis In my previous post, we have configured how to capture kernel dump for reference click on the link kernel crash dump Here in this article,we master the basic usage of crash utility to open the dumped memory core and process the information contained therein and to intercept the output. find out the […]

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