Sunday, January 31, 2016

Automount a disk at machine start up.

Automount a disk at machine start up.

Recently bought an additional hard disk of 1 TB for my home pc running Centos. After you plugin your disk to the machine, the system does not automounts it. It detects the new hardware and assigns it a dev id(deviceId)
To automount the disk at computer start up follow the following steps:

  1. Find the UUID of the newly added disk. You can find it by running the following command
  2. [root@paragWS ~]# blkid
    /dev/sdb1: UUID="dffb1c9c-29e9-4a00-add1-ad08d90c9469" TYPE="xfs"
    /dev/sdb2: UUID="SJhaki-0CLf-GDmR-j8LW-e1pL-hcwP-sQVnZJ" TYPE="LVM2_member"
    /dev/mapper/centos-root: UUID="cb3625db-6ee0-431f-884e-022037e66e48" TYPE="xfs"
    /dev/sda: UUID="c3d18886-59cc-4aba-aff8-c1f5403af506" TYPE="ext3"

  1. Create an entry in fstab which looks like this:
  2. [root@paragWS ~]# cat /etc/fstab

    #
    # /etc/fstab
    # Created by anaconda on Tue Dec  6 00:17:24 2015
    #
    # Accessible filesystems, by reference, are maintained under '/dev/disk'
    # See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
    #
    /dev/mapper/centos-root /                       xfs     defaults        0 0
                …

                # /dev/sda SATA 1TB
                   UUID=c3d18886-59cc-4aba-aff8-c1f5403af506 /mnt/VideoData                   ext3     defaults        0 0

Default settings used above are equivalent to rw, suid, dev, exec, auto, nouser, async. Read more here


Using Tcpdump to dump and read network traffic

Another Quick FYI tip. There are many network analyzer/reader utilities available on both Linux and Windows platform. There is of-course ...