[SOLVED] how can know ssh is disconected and retry with bash script

Issue

I'm using reverse ssh for connecting to remote client , Operator run reverse one time and leave client system how can i write bash script , when reverse ssh disconnected from server retry to connect to server (ssh)

Solution

Use autossh. Autossh "automatically restart[s] SSH sessions and tunnels"

sudo apt-get install autossh

I use autossh to to keep open reverse tunnel that I depend on. It works very well, even with long periods of lost connection.

Here is the script I use to create the tunnel:

#!/bin/bash
AUTOSSH_GATETIME=0
export AUTOSSH_GATETIME
autossh -f -N -R 8022:localhost:22 username@host -o "ServerAliveInterval 45" -o "ServerAliveCountMax 2"

I execute this script at boot with this cronjob:

@reboot /home/scripts/./persistent-tunnel.sh

Answered By - Jake

Answer Checked By - Clifford M. (WPSolving Volunteer)