View source for Startup scripts

Startup scripts can be defined from the [https://dynamic.lunanode.com/panel/scripts.php Startup Scripts] sidebar item. These scripts can then be selecting when provisioning new virtual machines, and selected scripts will execute when the new instance boots for the first time.

== Shell scripts ==

Shell scripts (such as scripts for bash) start with "#!" on the first line, generally followed by a path to the shell binary. For example, this bash script will update packages on Debian-based operating systems:

 <nowiki>#!/bin/bash
apt-get update; apt-get upgrade -y</nowiki>

== cloud-config scripts ==

cloud-config scripts can be used on images that have cloud-init installed (this includes the default template images). These can more reliably configure operating system parameters than shell scripts, and are generally easier to write.

* [http://cloudinit.readthedocs.org/en/latest/topics/format.html cloud-config script format]
* [http://cloudinit.readthedocs.org/en/latest/topics/examples.html Example cloud-config scripts]

== Example scripts ==

Set the root password and remove default administrator user:

 <nowiki>#!/bin/bash
password=$(cut -d':' -f2 /etc/shadow | tail -n 1 | sed -e 's/[\/&]/\\&/g')
sed -i 's/root:[^:]*:/root:'"$password"':/' /etc/shadow
username=$(ls /home/)
deluser "$username"
rm -rf /home/"$username"
sed -i 's/PermitRootLogin .*/PermitRootLogin yes/' /etc/ssh/sshd_config
service ssh restart
service sshd restart</nowiki>