Using the Linode Shell (Lish)

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Note
View the Linode Classic Manager version of the Using the Linode Shell (Lish) guide.

Using the Linode Shell (Lish)

The Linode Shell (Lish) provides console access to all of your Linodes. It also allows you to perform actions like rebooting a Linode or switching to a different configuration profile without having to open the Linode Manager. Lish is also a good rescue tool. The console provides out-of-band access to your Linode, which means you can use Lish to access your Linode even when you are unable to connect directly via SSH. This is useful if firewall settings or a bad network configuration prevent you from accessing your Linode using SSH. Lish can also be useful if you need to access your secure server on a local computer whose public key has not been added to the allowed list.

Connect to Lish

There are two ways to access Lish. You can use a terminal application to connect to a Lish SSH gateway, or you can log in to the Linode Cloud Manager and use the Lish console in your web browser. This section explains both methods.

Note
Lish used to be accessible via a direct SSH connection to your Linode’s host machine, but as of May 10, 2013, all users must connect to a Lish SSH gateway to access Lish. For more information, please see this blog post.

Use a Terminal Application

You can connect to Lish with the SSH client of your choice. For example, you can use the Terminal application in Mac OS X, PuTTY in Windows, or your favorite X11 terminal emulator.

  1. Select a Lish SSH gateway. There’s one in every data center. You can use any gateway to access your Linodes, but we recommend using one close to your Linode’s data center. The gateway boxes are available over IPv4 and IPv6.

    Lish SSH gateway Data Center
    lish-atlanta.linode.com US, Atlanta, GA
    lish-dallas.linode.com US, Dallas, TX
    lish-fremont.linode.com US, Fremont, CA
    lish-newark.linode.com US, Newark, NJ
    lish-singapore.linode.com Asia, Singapore, SG
    lish-tokyo.linode.com Asia, Tokyo, JP
    lish-tokyo2.linode.com or lish-shg1.linode.com Asia, Tokyo, JP
    lish-frankfurt.linode.com Europe, Frankfurt, DE
    lish-london.linode.com Europe, London, UK
  2. Open a terminal window and enter the following command, replacing username with your Linode Cloud Manager username, and location with your preferred Lish SSH gateway. Lish listens for connections on ports 22, 443, and 2200.

    ssh username@location
    

    For example, logging in as user via the Newark gateway would look like:

    ssh user@lish-newark.linode.com
    
    Note
    Users who have been granted “Access” rights on a particular Linode will have access to that Linode’s Lish console via the gateway. Linodes that a user can’t access in the Linode Cloud Manager won’t show up in the Lish list. For more information about creating user accounts and configuring permissions, see Accounts and Passwords.
  3. Verify that the Lish SSH gateway’s fingerprint is valid by verifying the Terminal’s output against the list of our Lish Gateway Fingerprints. Once verified, enter yes to proceed.

      
    The authenticity of host 'lish-newark.linode.com (66.228.40.59)' can't be established.
    ECDSA key fingerprint is SHA256:57OGBNARJ1fhI+zrE3eTEeQWXVVDHRU8QHcP+BsWmN8.
    Are you sure you want to continue connecting (yes/no)?
        
    
    ECDSA host key warning

    If after verifying the authenticity of the Lish SSH gateway’s fingerprint, you receive a message indicating that the ECDSA host key differs from the key for the IP address, remove the cached IP address on your local machine. Ensure you replace 192.0.2.0 with the IP address indicated by the Terminal.

    ssh-keygen -R 192.0.2.0
    

    Once you have removed the cached IP address, you can again attempt to SSH into the Lish gateway.

  4. Enter the password you use to log in to the Linode Manager. You are now at the Lish shell. A list of your Linodes appears, as shown below:

    Linodes located in this data center:
    linode241706         Newark, NJ
    linode276072         Newark, NJ
    
    Linodes located in other data centers:
    linode287497         Dallas, TX
    
    Note
    You can add a public SSH key for Lish in the Linode Manager to automatically connect to Lish without a password. See this section for more information.
  5. At the Lish command prompt, type a Linode’s name from the list. For example, typing linode241706 will connect you to the screen console session for that Linode.

  6. Log in to the Linode with your username and password.

After you log in, you’ll have console access to your Linode. You’ll be able to restart services like sshd, edit firewall settings, and make other changes to your Linode. To exit your Linode’s console, press CTRL+A then D to return to the host machine, and then press CTRL+D to return to the Lish menu. If you’d like to see the list of your Linodes again, type list from the gateway.

Use a Web Browser

You can also connect to Lish using a web browser. This is useful when you don’t have access to a terminal application, or if you just need quick and easy console access from the Linode Manager.

  1. Log in to the Linode Cloud Manager.
  2. Click on the Linodes link in the sidebar and select the desired Linode.
  3. Click on the Launch Console link in the top right-hand corner of the Manager.

    Launch the Lish Console

  4. The Lish Web Console window appears with your Linode’s console, as shown below.

    An example of the Lish Web Console

  5. From here, you can log in to your Linode with your root username and password, or any other username and password.

Now you can use the console, or exit to the Lish prompt by pressing CTRL+A then D. You cannot exit to a Lish gateway box using your web browser. To exit the session entirely, just close the Lish Web Console window.

Add Your Public Key

If you don’t want to enter your password every time you connect to Lish, you can add your public SSH key to the Linode Cloud Manager. If you haven’t yet created SSH keys, please see our Public Key Authentication with SSH guide for more information.

  1. Log in to the Linode Cloud Manager.

  2. Click on your profile icon in the top right hand corner of the Manager and select My Profile.

  3. Click on the LISH tab.

  4. Copy your public SSH key into the SSH Public Key field, as shown below.

    Add your public ssh key

  5. Click the Save button. Your Lish key will be saved in the Linode Cloud Manager.

Now you can log in to any of the Lish gateway boxes without having to type your password.

If you wish to disable Lish access for users without keys, use the Authentication Mode dropdown menu on the same page, and select Allow key authentication only then click Save.

Understanding Lish Commands

The Lish shell provides access to many functions which are otherwise only accessible via the Linode Cloud Manager web-based administration tool. Enter the help command to see a full list of available commands. The output provides an introduction to Lish functionality:

kill            - kill stuck screen sessions
exit            - exit from lish
help            - this menu

[return]        - connect to console
version         - display running kernel version
boot            - boot last used (or the only) config profile
boot N          - boot the specified config profile
shutdown        - shut down the Linode
reboot          - shut down, then boot the last used config profile
reboot N        - shut down, then boot the specified config profile
sysrq X         - send SysRq X to your Linode
destroy         - pulls the plug on a running Linode, no fs sync, no warning

jobs            - view the job queue for your Linode
configs         - view the configuration profiles for your Linode
config N        - view configuration profile details for profile N
status          - view the status of your Linode
logview         - view contents of console log

There are two ways to run these commands for a specific Linode. If you are at the main Lish gateway, you can prefix the command with a Linode ID, like this:

linode123456 logview

You can also bring up the Linode’s console, then type CTRL+A then D to drop back to the host for that Linode. Now all of the commands above will be run for that Linode specifically. To exit back to the main Lish menu, type exit.

Note
You can activate the ability to scroll back through the Lish console by pressing CTRL-A + ESC

Advanced Lish Tricks

While the Lish interface as described above is useful as a basic command-line interface, you may find that you want to issue commands to your Linode without going through the Lish login process.

You can directly connect to a Linode’s console:

ssh -t [manager-username]@lish-[location].linode.com [linode-name]

You can also append Lish commands to the SSH command on your system prompt. For instance, to reboot your system, using your Linode Cloud Manager username, location, and the host-id for your Linode:

ssh -t [manager-username]@lish-[location].linode.com [linode-name] reboot

Similarly, you can generate a view of the log using Lish:

ssh -t [manager-username]@lish-[location].linode.com [linode-name] logview

This command format works for all Lish functionality.

Lish Gateway Fingerprints

The valid fingerprints for the Lish gateway boxes are as follows:

Atlanta

These are the fingerprints for the Lish gateway in our Atlanta data center (lish-atlanta.linode.com):

RSA 59:30:1a:0b:93:5e:3f:4b:6f:d1:96:ff:7e:9e:12:f8
ECDSA SHA256:8emv5PuUgPB2GFejMYWl1f4x1yj3YqAQPAYIrBm43ZI
Ed25519 SHA256:7k2c442k+zqbGaraZvmqXM3MA5lCcthaR2lbrB651lg

Dallas

These are the fingerprints for the Lish gateway in our Dallas data center (lish-dallas.linode.com):

RSA 6d:3d:b5:d0:42:1c:49:45:a6:47:29:bd:88:4e:58:d4
ECDSA SHA256:1fL1HTGas1APIpshCu1ZWys7LI97s8eTFN3+f8zEYXA
Ed25519 SHA256:Ime9h7IAxAjBvMGR+G+EnbaLWpvXO+Z7TaGHzM9g5Sc

Frankfurt

These are the fingerprints for the Lish gateway in our Frankfurt data center (lish-frankfurt.linode.com):

RSA 43:76:22:43:0e:01:cb:84:6a:80:b9:9b:90:34:c7:b1
ECDSA SHA256:e1FxEXiZVi6n13tagd1ZAQEW/fsRqz29ez5IfWf9kxg
Ed25519 SHA256:vG1rnoGe7XRRY0nauJREQk75OamxCwRRpeaTDB8LpgM

Fremont

These are the fingerprints for the Lish gateway in our Fremont data center (lish-fremont.linode.com):

RSA 2c:43:0e:fc:88:f2:3a:dd:01:43:3a:fc:9f:67:9f:66
ECDSA SHA256:fwuaKryHbvtKjFFviDocnMTNKWXUzfZSGPY8mgLgiNM
Ed25519 SHA256:s3MVXFaTiL7Fb5oB0s9zMBk9VJsrkNxXXZfdeJG2enQ

London

These are the fingerprints for the Lish gateway in our London data center (lish-london.linode.com):

RSA 71:27:30:cd:dc:69:7a:fe:58:4a:04:e6:6b:5f:b4:e2
ECDSA SHA256:mE/plOHLl+NJ7LUdW7AaMEOnhskXZxav5Em/rD6VZ5g
Ed25519 SHA256:HXHM8/wCx7NrGsnfGpaexiBfOLKN9g0hoaL9wRaSeWg

Newark

These are the fingerprints for the Lish gateway in our Newark data center (lish-newark.linode.com):

RSA 11:2a:57:a4:f8:ca:42:b2:c0:ab:17:58:0d:0c:b7:8b
ECDSA SHA256:57OGBNARJ1fhI+zrE3eTEeQWXVVDHRU8QHcP+BsWmN8
Ed25519 SHA256:tyelNHfgaPGbN2cppfJVr/db3/pHnItR9maW+ocAS18

Singapore

These are the fingerprints for the Lish gateway in our Singapore data center (lish-singapore.linode.com):

RSA 06:26:d8:2a:12:8b:2f:d7:6c:54:72:5a:a7:7b:da:7b
ECDSA SHA256:rFYWuld4hWMbTzX+xZMuQ3kxiJ6t8A+FNQ5k889mKEA
Ed25519 SHA256:q1G1pBrLuhsUAnZ04SOYoxVthKYyLz+wA0hBAUVkKtE

Tokyo

These are the fingerprints for the Lish gateway in our Tokyo data center (lish-tokyo.linode.com):

RSA af:ec:f0:b8:87:33:d5:12:04:0d:7c:bb:a6:c5:5f:be
ECDSA SHA256:smE6PUuuG6tR4N8kN8UpoPx+XyVtAwxQ2dHuwoVS6eY
Ed25519 SHA256:xAs8SdX91L7Xw5q9H+GGR5N9DoPGxP5RKG3aTvR60zw

Tokyo 2

These are the fingerprints for the Lish gateway in our Tokyo2 data center (lish-tokyo2.linode.com):

RSA 2c:60:9a:ce:cf:4b:8d:4e:8f:09:ae:e0:c2:b0:fb:b7
ECDSA SHA256:0sRmstQ+6lfa4KwnAIQvuZMunq8KKNmu/n4KeAcAXmg
Ed25519 SHA256:SWEV04SJt+DDG4ov2AfDYdZRavcg4GHufNP60QRkZzk

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This guide is published under a CC BY-ND 4.0 license.