Auto SSH Copy Id Script

COPY A USER SSH PUBLIC KEY TO MULTIPLE HOSTS

DOWNLOAD

USAGE

⚠️ All remote hosts in the list must use the same user and password
Set up a list of hosts you wish to connect via SSH.

By default, the host list uses the ./hostlist.txt file
The list must use an IP address or domain name

List example:

  192.168.80.10
  192.168.80.11
  10.168.80.100
  10.168.80.110
  hostname.mydomain
  hostname.other.domain

REQUIREMENTS

sshpass package
- APT - apt install sshpass
- DNF - dnf install sshpass
ssh-copy-id script
- Usually comes with OpenSSH or Dropbear
Local host priviledge required
- Use sudo if not using root
Public key must be set for local user
- Example: ssh-keygen -b 4096 -t rsa

SYNTAX

Pass arguments at command line

./auto_ssh_copy_id.sh [local user] [remote user] [remote pass] [path to host list] [path to local pub key]

OR

Pass arguments interactively

$ /home/dan/github/scripts/auto_ssh_copy_id/auto_ssh_copy_id.sh
LOCAL USER FOR REMOTE ACCESS: [local user]
REMOTE USER: [remote user]
REMOTE USER PASSWORD: [remote user pass]
HOST LIST FILE PATH (default ./hostlist.txt): /path/to/host/list.txt
LOCAL USER PUB KEY PATH (default ~/.ssh/id_rsa.pub): /path/to/public/key.pub

EXAMPLE

$ /root/github/scripts/auto_ssh_copy_id/auto_ssh_copy_id.sh

LOCAL USER FOR REMOTE ACCESS: root
REMOTE USER: root
REMOTE USER PASSWORD: [remote user pass]
HOST LIST FILE PATH (default ./hostlist.txt):
        Default list set

LOCAL USER PUB KEY PATH (default ~/.ssh/id_rsa.pub):
        Default key set

/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh -o 'StrictHostKeyChecking=no' 'root@192.168.7.10'"
and check to make sure that only the key(s) you wanted were added.

OK - 192.168.7.10