SSH Config

SSH client config file manager

What is ssh_config?

https://linux.die.net/man/5/ssh_config

Why

I don't remember all the servers I am managing. Also all servers requires all different configuration to connec to it. I know ~.ssh/config can handle this kind of issue. I want it to handle this file easier.

Yes, I am not sure this is eaiser way to handle it. but I am trying.

Requirements

Python 2.7, 3.6, 3.7

Installation

$ pip install ssh-config

Usage

ssh-config.

    Usage:
        ssh-config [options] [COMMAND] [ARGS...]

    Options:
        -h --help           Show this screen.
        -v --version        Show version.
        -f --config FILE    Specify an ssh client file [default: ~/.ssh/config]

    Commands:
        ls          Show list of Hosts in client file
        add         Add new Host configuration
        update      UPdate Host configuration
        rm          Remove exist Host configuration
        import      Import Hosts from csv file to SSH Client config
        init        Create ~/.ssh/config file
        host        Get Host information
        version     Show version information

Use-cases

List hosts

$ ssh-config ls 
# It shows name and HostName attribute
server1: 203.0.113.76
*: None
server_cmd_1: 203.0.113.76
server_cmd_2: 203.0.113.76
server_cmd_3: 203.0.113.76

Add host

$ ssh-config add "server_cmd_4" HostName=203.0.113.77 IdentityFile="~/.ssh/cmd_id_rsa"

Update host

$ ssh-config add --update -p "server_cmd_3" IdentityFile="~/.ssh/cmd_id_rsa"

Remove host

$ ssh-config rm "server_3" 

Using pattern to get list or update exist hosts

List hosts with pattern

$ ssh-config ls "server_*"
# It shows name and HostName attribute
server_cmd_1: 203.0.113.76
server_cmd_2: 203.0.113.76
server_cmd_3: 203.0.113.76

Update hosts with pattern

$ ssh-config add --update -p "server_*" IdentityFile="~/.ssh/cmd_id_rsa"

add ssh key to multiple servers

ssh-config ls --only-name | xargs -I{} ssh-copy-id -i ~/.ssh/id_rsa {}