Wake on Lan in Centos 6

     
Start a computer from a remote machine by Wake on Lan.
[1]     Configuration of the computer you'd like to turn on from remote machine.


 yum -y install ethtool

ethtool -s eth0 wol g
or:
vi /etc/sysconfig/network-scripts/ifcfg-eth0
# add at the last line

ETHTOOL_OPTS="wol g"





check for MAC
ifconfig eth0 | grep HWaddr | awk '{print $5}'

00:22:68:5E:34:06
# take a memo


shutdown -h now


[2]     Operation on the computer at a remore place.

yum -y install net-tools
# ether-wake [MAC address of the computer you'd like to turn on]


ether-wake 00:22:68:5E:34:06
 # send magic packets

***correction

If have more than one interface need to specify it, for example:

ether-wake -i eth0 00:22:68:5E:34:06



found at: http://www.server-world.info/en/note?os=CentOS_6&p=wakeonlan

Comments

  1. MarkAugust 31, 2016 at 11:10 PM

    Doesn't work. I need the correct syntax. I am running CentOS 6.6 and just installed ethtool. It gives errors as follows:

    If I enter ether-wake 00:22:68:5E:34:06 it returns:

    Specify -i .

    If I enter ether-wake -i 00:22:68:5E:34:06 it returns:

    Specify the Ethernet address as 00:11:22:33:44:55.

    Please help!

    ReplyDelete
  2. MarekSeptember 1, 2016 at 11:02 AM

    You have to specify interface if have more than one.

    For example

    ether-wake -i eth0 00:22:68:5E:34:06

    ReplyDelete

Post a Comment

Popular posts from this blog

Securing the Pi-hole with fail2ban to prevent DNS Amplification attacks

Securing the Pi-hole with fail2ban to prevent DNS Amplification attacks   1. Install fail2ban  sudo apt-get update ; sudo apt-get install fail2ban 2. create jail file vi /etc/fail2ban/jail.d/pihole-dns.conf [pihole-dns] enabled = true port     = 53 action   = %(banaction)s[name=%(__name__)s-tcp, port="%(port)s", protocol="tcp", chain="%(chain)s", actname=%(banaction)s-tcp]            %(banaction)s[name=%(__name__)s-udp, port="%(port)s", protocol="udp", chain="%(chain)s", actname=%(banaction)s-udp] logpath = /var/log/pihole.log findtime = 60 maxretry = 5 bantime = 3600   3. create filter file vi /etc/fail2ban/filter.d/pihole-dns.conf # Fail2Ban configuration file # # script from www.marek.tokyo # [INCLUDES] # Read common prefixes. If any customizations available -- read them from # common.local before = common.conf [Definition] _daemon = dnsmasq #...
Read more

Reduce (shrink) and resize raw disk at Proxmox

 Reduce (shrink) and resize raw disk at Proxmox 1. Check the status of raw disk:   #e2fsck -fy /hdd-img/images/111/vm-111-disk-1.raw e2fsck 1.46.5 (30-Dec-2021) Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information /hdd-img/images/111/vm-111-disk-1.raw: 135279/327680000 files (1.8% non-contiguous), 857599886/1310720000 blocks  2. At first, check raw disk size:   #qemu-img info /hdd-img/images/111/vm-111-disk-1.raw image: /hdd-img/images/111/vm-111-disk-1.raw file format: raw virtual size: 4.88 TiB (5368709120000 bytes) disk size: 3.59 TiB  3. Resize filesystem: -M - will resize to the minimum size based on saved files -p - will display progress bar #resize2fs -M -p /hdd-img/images/111/vm-111-disk-1.raw resize2fs 1.46.5 (30-Dec-2021) Resizing the filesystem on /hdd-img/images/111/vm-111-disk-1.raw to 852166716 (4k) blocks....
Read more

How to clone CentOS server to another one

Image
 How to clone CentOS server to another one   Step 1: Installing the Rsync Tool in CentOS For cloning to be successful the rsync command-line tool needs to be present on both servers. This will be used for mirroring the source server to the destination server and syncing all the differences between the two systems. Thankfully, modern systems come with rsync already pre-installed. To check the version of rsync installed run: $ rsync --version If you want to view additional information about rsync, execute the following rpm command : $ rpm -qi rsync Check Rsync Version in CentOS If rsync is missing, run the following command to install it in RHEL / CentOS / Fedora systems. $ sudo yum install rsync Step 2: Configure the Source Server There are directories and files that you may want to exclude from cloning because they are either already available in the destination server or are autogenerated. These include the /boot , /tmp and /dev directories. Therefor...
Read more