IT/Software/Command Line Applications/wakeonlan: Difference between revisions

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VisualWikitext

Latest revision as of 08:20, 4 December 2020

General

You need to allow this in the BIOS first.

Then the computers need to be kept attached to the network and power.

Having them on a UPS is good.

Basic Usage

Say you are working at home.
You want to turn on and update all the computers
You can login to the main server, wake up all the desktops and they update.

Background

Find out who is on the lan.

sudo arp-scan 192.168.2.0/24

Configuration

There are countless tutorials on how to do this.
Making it "persistent" is the tricky bit.
Install some tools
- test

sudo apt install net-tools ethtool

net-tools brings ifconfig and arp which allows a LAN scan for MAC addresses

See what is enabled.

sudo ethtool interfaceName

for example sudo ethtool enp3s0
- look for Wake-on and see what is supported and enabled.
- we want "g"
Look what is persistent

nmcli c show jademonkeyWired | grep 802-3-ethernet.wake-on-lan

You will get an output like this

802-3-ethernet.wake-on-lan: magic

802-3-ethernet.wake-on-lan-password: --

We want "magic" not "default"
If not "magic" then modify it by

sudo nmcli c modify jademonkeyWired 802-3-ethernet.wake-on-lan magic

Another thing you may need to do is:

sudo ethtool -s enp1s0 wol g

This does not seem to be as persistent.

@@ Line 1: / Line 1: @@
-== General ==
+==General==
 You need to allow this in the BIOS first.
@@ Line 5: / Line 5: @@
 Having them on a UPS is good.
+===Basic Usage===
-== Configuration ==
+*Say you are working at home.
+*You want to turn on and update all the computers
+*You can login to the main server, wake up all the desktops and they update.
-* There are countless tutorials on how to do this.
+===Background===
-* Making it "persistent" is the tricky bit.
-*
-** Say you are working at home.
+*Find out who is on the lan.
-** You want to turn on and update all the computers
-** You can login to the main server, wake up all the desktops and they update.
+<code>sudo arp-scan 192.168.2.0/24   </code>
-* There are several requirements
-** You need to
+==Configuration==
+*There are countless tutorials on how to do this.
+*Making it "persistent" is the tricky bit.
+*Install some tools
+**test
+<code>sudo apt install net-tools ethtool</code>
+*net-tools brings ifconfig and arp which allows a LAN scan for MAC addresses
+See what is enabled.
+<code>sudo ethtool interfaceName</code>
+*for example sudo ethtool enp3s0
+**look for Wake-on and see what is supported and enabled.
+**we want "g"
+*Look what is persistent
+<code>nmcli c show jademonkeyWired | grep 802-3-ethernet.wake-on-lan</code>
+*You will get an output like this
+-3-ethernet.wake-on-lan:             magic
+-3-ethernet.wake-on-lan-password:    --
+*We want "magic" not "default"
+*If not "magic" then modify it by
+<code>sudo nmcli c modify jademonkeyWired 802-3-ethernet.wake-on-lan magic
+</code>
+Another thing you may need to do is:
+<code>sudo ethtool -s enp1s0 wol g</code>
+*This does not seem to be as persistent.