SSH-Tunnel-Auto-reconnecting

There are no tools or scripts that automatically reconnect SSH Tunneling. Autossh usually break its connection when running in more than 3 or 4 days. This bash script checks whether port connection is open (in periodically, if you use Crontab) by using /dev/tcp. It automatically detects whether tunneling is broken. If that happened, it'll kill tunneled process and retunnel. This bash script is intended for LINUX environments(Ubuntu/Centos).

Steps to Use this Scirpt.

1. Clone to Your Directory.

$ git clone https://github.com/mgwoo/SSH-Tunnel-Auto-reconnecting.git

2. Replace with Your Login Informations.

// Inside of tunnel.sh
// Your Individual Informations.

// PEM_LOC is optional parameter for SSH login.
PEM_LOC="{your_pem_location}"
ID="{access_ID}"
ADDR="{access_Addr}"
PORT="{access_Port}"    

3. Give an Execution Permission

$ chmod a+x /path/to/your/dir/tunnel.sh 

4. Crontab Settings.

Setting this scripts will execute in periodically.

$ crontab -e

# inside crontab settings.
* * * * * /bin/bash /path/to/your/dir/tunnel.sh
# or other periods. 
# (* * * * * means every minutes)

5. Check whether Your Tunneling is Alive.

$ ps -ef | grep port:addr:port