Mailing List Archive: SSH from the Backend

SSH from the Backend

Oct 25, 2020, 3:56 AM

Post #1 of 4 (330 views)

I am trying to issue a command from the master to the slave backend
using ssh.

Something like "ssh 'pi@192.168.0.127' 'sudo pistop.sh'"

It works from the user account but not when called from the master
backend presumably because it runs under account 'mythtv'.

How do I give the 'mythtv' account ssh credentials?

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Re: SSH from the Backend [ In reply to ]

jfabernathy at gmail

Oct 25, 2020, 4:03 AM

Post #2 of 4 (330 views)

Permalink

On 10/25/20 6:56 AM, John wrote:
> I am trying to issue a command from the master to the slave backend
> using ssh.
>
> Something like "ssh 'pi@192.168.0.127' 'sudo pistop.sh'"
>
> It works from the user account but not when called from the master
> backend presumably because it runs under account 'mythtv'.
>
> How do I give the 'mythtv' account ssh credentials?
>
I just make sure 'mythtv' user has a password and is set for bash shell.

the entry in /etc/passwd reads as:

mythtv:x:127:138::/home/mythtv:/bin/bash

your user and group numbers may differ.

use passwd to assign a password

Jim A

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Re: SSH from the Backend [ In reply to ]

ryan at novosielski

Oct 25, 2020, 4:41 PM

Post #3 of 4 (330 views)

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On Sun, Oct 25, 2020, at 06:56, John wrote:
> I am trying to issue a command from the master to the slave backend
> using ssh.
>
> Something like "ssh 'pi@192.168.0.127' 'sudo pistop.sh'"
>
> It works from the user account but not when called from the master
> backend presumably because it runs under account 'mythtv'.
>
> How do I give the 'mythtv' account ssh credentials?

This seems like the perfect place for a passphraseless SSH key with a forced command (the latter being addressed at the end of this document):

https://help.ubuntu.com/community/SSH/OpenSSH/Keys

--
Ryan Novosielski
ryan@novosielski.com
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Re: SSH from the Backend [ In reply to ]

jksjdevelop at gmail

Oct 26, 2020, 4:15 AM

Post #4 of 4 (329 views)

Permalink

On 25/10/2020 11:03, Jim Abernathy wrote:
>
> On 10/25/20 6:56 AM, John wrote:
>> I am trying to issue a command from the master to the slave backend
>> using ssh.
>>
>> Something like "ssh 'pi@192.168.0.127' 'sudo pistop.sh'"
>>
>> It works from the user account but not when called from the master
>> backend presumably because it runs under account 'mythtv'.
>>
>> How do I give the 'mythtv' account ssh credentials?
>>
> I just make sure 'mythtv' user has a password and is set for bash shell.
>
> the entry in /etc/passwd reads as:
>
> mythtv:x:127:138::/home/mythtv:/bin/bash
>
> your user and group numbers may differ.
>
> use passwd to assign a password
>
> Jim A
>
>
Thanks worked great

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