Packer installation - Revision history

G4li: change /dev/vg0/lv_root to /dev/sda3

2021-03-17T17:15:36Z

change /dev/vg0/lv_root to /dev/sda3

← Older revision		Revision as of 17:15, 17 March 2021
Line 16:		Line 16:
	"<wait>y<enter><wait10>",		"<wait>y<enter><wait10>",
	"rc-service sshd stop<enter>",		"rc-service sshd stop<enter>",
	"mount /dev/~~vg0/lv_root~~ /mnt<enter>",		"mount /dev/sda3 /mnt<enter>",
	"echo 'PermitRootLogin yes' >> /mnt/etc/ssh/sshd_config<enter>",		"echo 'PermitRootLogin yes' >> /mnt/etc/ssh/sshd_config<enter>",
	"umount /mnt<enter>",		"umount /mnt<enter>",

Jirib79 at 17:44, 21 April 2020

2020-04-21T17:44:09Z

← Older revision		Revision as of 17:44, 21 April 2020
Line 10:		Line 10:
	"root<enter><wait>",		"root<enter><wait>",
	"ifconfig eth0 up && udhcpc -i eth0<enter><wait5>",		"ifconfig eth0 up && udhcpc -i eth0<enter><wait5>",
	"wget http://{{ .HTTPIP }}:{{ .HTTPPort }}/answers<enter><wait>",		"wget http://<nowiki>{{ .HTTPIP }}:{{ .HTTPPort }}</nowiki>/answers<enter><wait>",
	"setup-alpine -f answers<enter><wait5>",		"setup-alpine -f answers<enter><wait5>",
	"{{user `ssh_password`}}<enter><wait>",		"<nowiki>{{user `ssh_password`}}</nowiki><enter><wait>",
	"{{user `ssh_password`}}<enter><wait5>",		"<nowiki>{{user `ssh_password`}}</nowiki><enter><wait5>",
	"<wait>y<enter><wait10>",		"<wait>y<enter><wait10>",
	"rc-service sshd stop<enter>",		"rc-service sshd stop<enter>",
Line 55:		Line 55:
	"type": "shell",		"type": "shell",
	"scripts": [		"scripts": [
	"{{ template_dir }}/../scripts/00_alpinelinux_base.sh",		"<nowiki>{{ template_dir }}</nowiki>/../scripts/00_alpinelinux_base.sh",
	"{{ template_dir }}/../scripts/99_alpinelinux_base.sh"		"<nowiki>{{ template_dir }}</nowiki>/../scripts/99_alpinelinux_base.sh"
	]		]
	}		}

Jirib79 at 17:40, 21 April 2020

2020-04-21T17:40:47Z

← Older revision		Revision as of 17:40, 21 April 2020
Line 60:		Line 60:
	}		}
	],		],

			[[Category:Installation]]

Jirib79 at 17:40, 21 April 2020

2020-04-21T17:40:10Z

@@ Line 30: / Line 30: @@
 * as 'setup-alpine' script asks to configure root password, it just does that
 * after that, you can run whatever commands you want, but keep in mind that it is still installer media; you can 'reboot' into installed system and run 'provisioners'
 == packer example provisioners ==

Jirib79: Created page with "== Basic understanding == Alpine Linux installer is just a bunch of shell scripts, see [https://git.alpinelinux.org/alpine-conf/tree/setup-alpine.in setup-alpine.in] in [http..."

2020-04-21T17:38:48Z

Created page with "== Basic understanding == Alpine Linux installer is just a bunch of shell scripts, see [https://git.alpinelinux.org/alpine-conf/tree/setup-alpine.in setup-alpine.in] in [http..."

New page

== Basic understanding ==

Alpine Linux installer is just a bunch of shell scripts, see [https://git.alpinelinux.org/alpine-conf/tree/setup-alpine.in setup-alpine.in] in [https://git.alpinelinux.org/alpine-conf/tree alpine-conf] repository. Understanding this is key to success.

== packer example boot_command ==

This is a part of 'boot_command' from [https://www.packer.io/docs/builders/qemu.html QEMU] builder:

"boot_command": [
"root<enter><wait>",
"ifconfig eth0 up && udhcpc -i eth0<enter><wait5>",
"wget http://{{ .HTTPIP }}:{{ .HTTPPort }}/answers<enter><wait>",
"setup-alpine -f answers<enter><wait5>",
"{{user `ssh_password`}}<enter><wait>",
"{{user `ssh_password`}}<enter><wait5>",
"<wait>y<enter><wait10>",
"rc-service sshd stop<enter>",
"mount /dev/vg0/lv_root /mnt<enter>",
"echo 'PermitRootLogin yes' >> /mnt/etc/ssh/sshd_config<enter>",
"umount /mnt<enter>",
"reboot<enter>"
],

What it does is to mimic a human typing in "console" (VNC). Before running Alpine Linux installer (ie. 'setup-alpine') it does:

* logins in as 'root' (installation media doesn't require password)
* configures first network interfaces via DHCP
* gets 'answers' file from 'packer' built-in HTTP server to be able to start automated installation
* runs Alpine Linux 'setup-alpine' installer script with 'answers' file
* as 'setup-alpine' script asks to configure root password, it just does that
* after that, you can run whatever commands you want, but keep in mind that it is still installer media; you can 'reboot' into installed system and run 'provisioners'

== packer example provisioners ==

"provisioners": [
{
"type": "shell",
"scripts": [
"{{ template_dir }}/../scripts/00_alpinelinux_base.sh",
"{{ template_dir }}/../scripts/99_alpinelinux_base.sh"
]
}
],