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Shell script to automate configuration of ssh to all servers in KodeKloud Engineer.
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| #!/bin/bash | |
| set -eu | |
| if ! command -v ssh-keygen &> /dev/null ;then | |
| echo "Cant seem to find 'ssh-keygen' binary, are you sure its installed ?" | |
| exit 1 | |
| fi | |
| if ! command -v ssh &> /dev/null ;then | |
| echo "Cant seem to find 'ssh' binary, are you sure its installed ?" | |
| exit 1 | |
| fi | |
| #=====================install sshpass===================== | |
| echo "Note : Enter the password 'mjolnir123' when prompted for user '$(whoami)' to install the package: 'sshpass'" | |
| echo | |
| echo "installing the sshpass package........" | |
| echo | |
| sudo yum install sshpass -y &> /dev/null | |
| echo | |
| #=====================generate ssh key==================== | |
| echo "generating ssh keys..............." | |
| echo | |
| ssh-keygen -t rsa -b 2048 -f "$HOME"/.ssh/id_rsa -N "" <<< y &> /dev/null | |
| if [ -z "$(ls -A $HOME/.ssh/)" ]; then | |
| echo "ssh keys failed to generate at location $HOME/.ssh/" | |
| else | |
| echo "ssh keys sucessfuly generated at $HOME/.ssh" | |
| fi | |
| #================copy public key to all servers=========== | |
| echo | |
| echo "copying public key to all servers................." | |
| echo | |
| sshpass -p 'Am3ric@' ssh-copy-id -i $HOME/.ssh/id_rsa.pub [email protected] -o StrictHostKeyChecking=no &> /dev/null | |
| sshpass -p 'Ir0nM@n' ssh-copy-id -i $HOME/.ssh/id_rsa.pub [email protected] -o StrictHostKeyChecking=no &> /dev/null | |
| sshpass -p 'BigGr33n' ssh-copy-id -i $HOME/.ssh/id_rsa.pub [email protected] -o StrictHostKeyChecking=no &> /dev/null | |
| # sshpass -p 'Sp!dy' ssh-copy-id -i $HOME/.ssh/id_rsa.pub [email protected] -o StrictHostKeyChecking=no #&> /dev/null | |
| # sshpass -p 'Bl@kW' ssh-copy-id -i $HOME/.ssh/id_rsa.pub [email protected] -o StrictHostKeyChecking=no #&> /dev/null | |
| # sshpass -p 'H@wk3y3' ssh-copy-id -i $HOME/.ssh/id_rsa.pub [email protected] -o StrictHostKeyChecking=no #&> /dev/null | |
| # sshpass -p 'Gr00T123' ssh-copy-id -i $HOME/.ssh/id_rsa.pub [email protected] -o StrictHostKeyChecking=no #&> /dev/null | |
| # sshpass -p 'j@rv!s' ssh-copy-id -i $HOME/.ssh/id_rsa.pub [email protected] -o StrictHostKeyChecking=no #&> /dev/null | |
| echo | |
| #update ssh config for remote server hostname & username | |
| echo "configuring ssh config for all servers............." | |
| echo | |
| mkdir -p ~/.ssh && chmod 700 ~/.ssh | |
| touch ~/.ssh/config && chmod 600 ~/.ssh/config | |
| cat <<EOF > ~/.ssh/config | |
| Host app1 | |
| HostName 172.16.238.10 | |
| User tony | |
| Host app2 | |
| HostName 172.16.238.11 | |
| User steve | |
| Host app3 | |
| HostName 172.16.238.12 | |
| User banner | |
| Host db | |
| HostName 172.16.239.10 | |
| User peter | |
| Host storage | |
| HostName 172.16.238.15 | |
| User natasha | |
| Host backup | |
| HostName 172.16.238.16 | |
| User clint | |
| Host mail | |
| HostName 172.16.238.17 | |
| User groot | |
| Host jenkins | |
| HostName 172.16.238.19 | |
| User jenkins | |
| EOF | |
| if [ -f $HOME/.ssh/config ]; then | |
| echo "SSH config sucessfully generated for all servers" | |
| else | |
| echo "Couldn't generate ssh config file at $HOME/.ssh/config" | |
| fi | |
| echo | |
| echo "You can now ssh into the servers using their short name | |
| for example 'ssh jenkins' or 'ssh app1' etc......" | |
| echo | |
| echo "Check the file ~/.ssh/config for list of servers you can connect to" | |
| echo |
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