Re: need help to design screen fail-over

[Pandurangan R S]

> I am using expect command to do auto ssh login

Expect is not a good choice to do this.

Instead it is better to use SSH Key authentication. See
http://sial.org/howto/openssh/publickey-auth/

You can use empty passphrase (not recommended, but better than using
expect) or use ssh-agent (recommended) to do auto login.

On Thu, Dec 24, 2009 at 4:02 PM, J. Bakshi <address@hidden> wrote:
> Hello list,
>
> I am using expect command to do auto ssh login. It is working well with
> screen like
>
> ` ` `
> spawn ssh  '$ssh_Server'  -t  "screen -aUS  '$ssh_Server'  -dR bash -l"
> expect "*assword:"
> send '$PASSWORD'
> send "\r"
> interact'
> ` ` `
> All OK.
>
> Now I am trying to do a screen fail over, so that if the remote server
> does not have screen then it will do just ssh login. I have tried with
>
> ` ` `
> spawn ssh " '$ssh_Server' -t  screen -aUS  '$ssh_Server' -dR bash -l ||
> '$ssh_Server' "
> ` ` `
>
> and it reports error as
>
> ` ` `
> send: spawn id exp4 not open
>    while executing
> "send testpassword"
> ` ` `
>
> What might be wrong here ? Any clue ?
> Thanks
>
> --
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>
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