Modular structure of apache is one of the reason for its global dominance among webservers.We have the flexibility to adding or droping modules.Before we deal with apache prefork MPM we need to have a basic idea about apache Multi Processing Modules,Multi processing Modules (MPM) are the multiple request (hundreds to kilos) handling ‘department’ of apache.We […]
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IPMP, or IP Multipathing, is used to provide redundant network connections for your Solaris servers. When IPMP was first release it used a probe based method for failure detection. This required an IP address to be placed on all NIC’s in the IPMP group, even if the NIC was just being used a test […] vxdisk: krishbe$ vxdisk list ==> List all disks under volume manager control and give there status krishbe$ vxdisk -oalldgs list krishbe$ vxdisk rm <c?t?d?> ==> Remove a disk so that it is no longer under volume manager control krishbe$ vxdisk list <disk> ==> Display detailed disk information vxdg: krishbe$ vxdg list ==> Display groups […] [root@myhost01 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00 17G 13G 3.4G 79% / /dev/sda1 99M 43M 52M 45% /boot tmpfs 943M 0 943M 0% /dev/shm [root@myhost01 ~]# [root@myhost01 ~]# [root@myhost01 ~]# fdisk /dev/sdd Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS […] Before the Addition of new disk to the Linux Server : ============================================================================= ======>> The total number of disks on the system can be seen through fdisk -l [root@servername ~]# fdisk -l | more Disk /dev/sda: 21.4 GB, 21474836480 bytes 255 heads, 63 sectors/track, 2610 cylinders Units = cylinders of 16065 * 512 = […] Converting a root filesystem is a bit more tricky because you cannot unmount it, as your system is running on it. Nevertheless it is still possible to do it without using an external bootable media. You should do this in a single-user mode. First step is to modify your /etc/fstab file to say “ext4” […] EXT2, EXT3 and EXT4 are all filesystems created for Linux. This article explains the following: High level difference between these filesystems. How to create these filesystems. How to convert from one filesystem type to another. ===>> Ext2 Ext2 stands for second extended file system. It was introduced in 1993. Developed by […] Now changing the ext3 FS to the ext4 FS type depends on the Requirement. ========================================================================= =====>> check the fs type by the below information [root@servername ~]# mount | grep -i media /dev/mapper/vg3-media1 on /media type ext3 (rw) =====>> also check in the fstab file [root@servername ~]# cat /etc/fstab /dev/vg0/root […] OS: CentOS 5.6 64bit Kernel version: 2.6.18-238.19.1.el5 Backup partition: /backup (mount from /dev/sdb) 1. First of all, its recommended to backup everything first. We will us ‘dd‘ command to backup the whole partition to another hard disk. That hard disk is attached via SATA cable. We will format the backup hard disk with […] What is swap? Swap space is the area on a hard disk which is part of the Virtual Memory of your machine, which is a combination of accessible physical memory (RAM) and the swap space. Swap space temporarily holds memory pages that are inactive. Swap space is used when your system decides that it needs […] |
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