Startup scripts - Revision history

Favyen Bastani: /* Example scripts */

2017-09-06T17:57:40Z

‎Example scripts

Favyen Bastani at 22:57, 5 January 2016

2016-01-05T22:57:37Z

Favyen Bastani: /* Example scripts */

2015-02-25T03:19:55Z

‎Example scripts

Favyen Bastani at 03:19, 25 February 2015

2015-02-25T03:19:30Z

Favyen Bastani: Created page with "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 ne..."

2014-12-13T06:39:25Z

Created page with "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 ne..."

New page

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]

@@ Line 25: / Line 25: @@
 deluser "$username"
 rm -rf /home/"$username"
-sed -i 's/PermitRootLogin .*/PermitRootLogin yes/' /etc/ssh/sshd_config
+sed -i 's/.*PermitRootLogin.*/PermitRootLogin yes/' /etc/ssh/sshd_config
 service ssh restart
 service sshd restart</nowiki>

← Older revision		Revision as of 22:57, 5 January 2016
Line 1:		Line 1:
−	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.	+	Startup scripts can be defined from the [https://dynamic.lunanode.com/panel/scripts 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 ==

@@ Line 17: / Line 17: @@
 == Example scripts ==
-Set the root password:
+Set the root password and remove default administrator user:
   <nowiki>#!/bin/bash

← Older revision		Revision as of 03:19, 25 February 2015
Line 14:		Line 14:
	* [http://cloudinit.readthedocs.org/en/latest/topics/format.html cloud-config script format]		* [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]		* [http://cloudinit.readthedocs.org/en/latest/topics/examples.html Example cloud-config scripts]
		+
		+	== Example scripts ==
		+
		+	Set the root password:
		+
		+	<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>