January 8, 2016
Network Installation on Linux using NFS
Linux General,Install dhcp,copy /usr/share/doc/dhcp-xxxx/dhcpd.conf.sample to /etc/dhcp/dhcpd.conf cp -r /usr/share/doc/dhcp-xxxx/dhcpd.conf.sample /etc/dhcp/dhcpd.conf
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September 23, 2015
Open VPN Server Configuration on Linux
Linux General,Download openvpn-.rpm , And install using this command rpm -ivh openvpn-.rpm
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September 12, 2015
Networking Concepts, in RHEL 7 or CENTOS7.
Linux General,We usually edit the network configuration file in the older versions to manage IPs. under /etc/sysconfig/network-scripts/
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August 26, 2015
Symbolic link hack and its prevention in cPanel based servers.
Linux General,Just like we use shortcut in windows based operating system. Symbolic link (symlink or soft link) is a shortcut like file in linux operating systems. In linux a normal user cannot access server main/root directory. So, they use this symlink option as a tool to hack/gain access to server main/root directory. User will create a…
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August 14, 2015
DNS Configuration (Internal and External)
Linux General,bind-9.8.2-0.17.rc1.el6_4.6.i686.rpm bind-chroot-9.8.2-0.17.rc1.el6_4.6.i686.rpm
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June 18, 2015
Iperf
Linux General,Iperf was developed by NLANR/DAST as a modern alternative for measuring maximum TCP and UDP bandwidth performance. Iperf allows the tuning of various parameters and UDP characteristics. Iperf reports bandwidth, delay jitter, datagram loss.
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June 2, 2015
MySQLTuner-perl Script
Linux General,MySQLTuner is a script written in Perl that allows you to review a MySQL installation quickly and make adjustments to increase performance and stability. The current configuration variables and status data is retrieved and presented in a brief format along with some basic performance suggestions.
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May 25, 2015
Linux – Creating a Partition Size Larger Than 2TB using Parted Command
Linux General,Disk /dev/sdb: 3000.6 GB, 3000592982016 bytes 255 heads, 63 sectors/track, 364801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes
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May 12, 2015
Add multiple interface and IP address – ubuntu and centos
Linux General,Save IPs in a file like /opt/dummy.txt and run the script to add them up. Interface add script–Ubuntu or Centos: echo Enter Distribution ubuntu\/centos
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April 30, 2015
MEGACLI Commands to check Hardware RAID config and Setup
Linux General,01:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2108 [Liberator] (rev 05) The above command shows the RAID controller vendor details.
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