Tag Archive for centos

CentOS 6 — Configure NFS Client

Configure NFS Client to mount directories provided from NFS Server.
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Disable IPv6 on Centos 6, 5

Check whether ur system is enabled with IPv6 (::1:500,:::22) or just for IPv4 (0.0.0.0:22)
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netstat -atnu
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address               Foreign Address             State
tcp        0      0 0.0.0.0:111                 0.0.0.0:*                   LISTEN
tcp        0      0 192.168.122.1:53            0.0.0.0:*                   LISTEN
tcp        0      0 0.0.0.0:21                  0.0.0.0:*                   LISTEN
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LISTEN
tcp        0      0 127.0.0.1:631               0.0.0.0:*                   LISTEN
tcp        0      0 0.0.0.0:34843               0.0.0.0:*                   LISTEN
tcp        0      0 0.0.0.0:5672                0.0.0.0:*                   LISTEN
tcp        0    128 116.90.239.114:22           116.90.239.126:52548        ESTABLISHED
tcp        0      0 :::22                       :::*                        LISTEN
tcp        0      0 :::5989                     :::*                        LISTEN
udp        0      0 0.0.0.0:783                 0.0.0.0:*
udp        0      0 127.0.0.1:4500              0.0.0.0:*
udp        0      0 116.90.239.114:4500         0.0.0.0:*
udp        0      0 0.0.0.0:42018               0.0.0.0:*
udp        0      0 0.0.0.0:930                 0.0.0.0:*
udp        0      0 192.168.122.1:53            0.0.0.0:*
udp        0      0 0.0.0.0:67                  0.0.0.0:*
udp        0      0 0.0.0.0:34384               0.0.0.0:*
udp        0      0 0.0.0.0:848                 0.0.0.0:*
udp        0      0 0.0.0.0:5353                0.0.0.0:*
udp        0      0 0.0.0.0:111                 0.0.0.0:*
udp        0      0 127.0.0.1:500               0.0.0.0:*
udp        0      0 116.90.239.114:500          0.0.0.0:*
udp        0      0 0.0.0.0:631                 0.0.0.0:*
udp        0      0 ::1:500                     :::*
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# ping6 ::1    ———–> Ping your loopback ipv6 IP.

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Centos 6 bonding + bridge

How to install and configure bridge on Centos 6

yum install bridge-utils
cd /etc/sysconfig/network-scripts/
vi ifcfg-bond0

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Install MySQL 5.5.16 on Fedora 15/14, CentOS/Red Hat (RHEL) 5.6/6

MySQL is a relational database management system (RDBMS) that runs as a server providing multi-user access to a number of databases. This is guide, howto install or upgrade MySQL Community Server latest and greatest version 5.5.16 on Fedora 15, (14 13, 12, 11, 10, 9, 8), CentOS 5.6 and Red Hat (RHEL) 5.6/6.
Note: If you are upgrading MySQL (from earlier version), then make sure that you backup (dump and copy) your database and configs. And remember run mysql_upgrade command.
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VNC server on CentOS

VNC is used to display an X windows session running on another computer. Unlike a remote X connection, the xserver is running on the remote computer, not on your local workstation. Your workstation ( Linux or Windows ) is only displaying a copy of the display ( real or virtual ) that is running on the remote machine.

There are several ways to configure the vnc server. This HOWTO shows you how to configure VNC using the ‘vncserver’ service as supplied by CentOS.
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Postfix + Postfixadmin + Dovecot + SASL — CentOS

PostfixAdmin Installation:

    Download PostfixAdmin from sourceforge.net

    	tar xvfz postfixadmin_2.3.tar.gz.tar.gz -C /usr/share/
    	yum install php-imap.i686
    	/etc/init.d/httpd restart
    	vi /usr/share/postfixadmin-2.3/config.inc.php
    

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