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add makefile recipes
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‎.env.example‎

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PASSWORD=ubuntu
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PUB_KEY=ssh-rsa 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 simple
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USERNAME=ubuntu
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INSTALL_SSH_SERVER=true

‎.gitignore‎

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*.iso
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user-data.yaml
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**.key**
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**.pem**
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**.pub**
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**.gpg**
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**SHA256SUMS**
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**id_rsa**
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**authorized_keys**
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.env

‎Makefile‎

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#!make
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-include .env
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TODAY ?= $(shell date +"%Y-%m-%d")
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GCC ?= /bin/bash
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GCMD ?= ./ubuntu-autoinstall-generator.sh
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GCFLAGS ?= --all-in-one
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USER_DATA_INFILE ?= ./user-data.template.yaml
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USER_DATA_FILE ?= ./user-data.yaml
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PROJECT := simple
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PASSWORD ?= $(shell stty -echo; read -p "Password: " pwd; stty echo; echo $$pwd)
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INSTALL_SERVER ?= false
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PUB_KEY ?= $(shell cat id_rsa.pub)
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ENCRYPTED_PASSWORD ?= $(shell /usr/bin/openssl passwd -1 $(PASSWORD))
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RANDOM_ADJ := $(shell cat /usr/share/dict/words \
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| grep -E '^[[:alpha:]]{1,5}$$' \
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| grep -e 'ly$$' -e 'ing$$' -e 'ed$$'\
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| sed -e 's/\(.*\)/\L\1/'| shuf -n1)
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RANDOM_WORD := $(shell cat /usr/share/dict/words \
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| grep -E '^[[:alpha:]]{1,5}$$' \
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| shuf -n1 \
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| sed -e s/"'s"/""/g \
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| sed -e 's/\(.*\)/\L\1/' \
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| sed -e 's/ *$$//g')
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HOSTNAME ?= $(RANDOM_ADJ)-$(RANDOM_WORD)
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USERNAME ?= ubuntu
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ISO_OUTFILE ?= $(HOSTNAME)_$(TODAY).iso
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ENV_CONTENTS := $(shell cat ./.env)
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MAKE_ENV += ENCRYPTED_PASSWORD
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MAKE_ENV += PUB_KEY
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MAKE_ENV += HOSTNAME
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MAKE_ENV += USERNAME
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MAKE_ENV += INSTALL_SSH_SERVER
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SHELL_EXPORT := $(foreach v,$(MAKE_ENV),$(v)='$($(v))' )
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CDROM ?= $(shell find . -maxdepth 1 -type f -iname "*_$(TODAY).iso" | head -1)
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RELEASE ?= 20.04
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INSTALLER := /usr/bin/virt-install
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URI ?= qemu:///system
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RAM ?= 2096
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DISK ?= pool=default,size=25,bus=virtio,format=qcow2
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VCPUS ?= 1
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OS_TYPE := linux
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OS_VARIANT := ubuntu$(RELEASE)
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NETWORK ?= network:default
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GRAPHICS ?= vnc
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CONSOLE ?= pty,target_type=serial
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EXTRA_ARGS ?= console=ttyS0,115200n8 serial
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compile:
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$(MAKE) get_pub_key
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ifneq (,$(findstring HOSTNAME,$(ENV_CONTENTS)))
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# Found
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else
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echo "\nHOSTNAME=$(HOSTNAME)" >> ./.env;
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endif
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$(SHELL_EXPORT) envsubst <$(USER_DATA_INFILE) >$(USER_DATA_FILE); \
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$(GCC) $(GCMD) $(GCFLAGS) --user-data $(USER_DATA_FILE) --destination $(ISO_OUTFILE)
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encrypt_password:
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@/usr/bin/openssl passwd -1 $(PASSWORD)
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create_keypair:
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ssh-keygen -t rsa -b 4096 -f id_rsa -C $(PROJECT) -N "" -q
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chmod 600 id_rsa
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write_file:
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$(SHELL_EXPORT) envsubst <$(USER_DATA_INFILE) >$(USER_DATA_FILE)
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get_pub_key:
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ifeq ($(PUB_KEY),)
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$(MAKE) create_keypair
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endif
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build_user_data:
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$(MAKE) get_pub_key
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$(MAKE) write_file
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remove_old_keys:
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rm ./*id_rsa*
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rm ./*SHA256SUMS*
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rm ./*.keyring
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cleanup_isos:
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rm -f ./*.iso
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make_clean_all:
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$(MAKE) remove_old_keys
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$(MAKE) cleanup_isos
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install:
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$(GCC) $(INSTALLER) \
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--connect=$(URI) \
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--name $(HOSTNAME) \
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--ram $(RAM) \
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--disk $(DISK) \
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--vcpus $(VCPUS) \
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--os-type $(OS_TYPE) \
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--os-variant $(OS_VARIANT) \
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--network $(NETWORK) \
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--graphics $(GRAPHICS) \
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--console $(CONSOLE) \
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--cdrom $(CDROM) \
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--force --debug
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‎README.md‎

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2020
Tested on a host running Ubuntu 20.04.1.
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- Utilities required:
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- ```p7zip-full```
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- ```curl```
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- ```mkisofs``` or ```genisoimage```
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### Usage
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### Example
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```
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user@testbox:~$ bash ubuntu-autoinstall-generator.sh -a -u user-data.example -d ubuntu-autoinstall-example.iso
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[2020-12-23 14:06:07] 👶 Starting up...
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[2020-12-23 14:06:07] 📁 Created temporary working directory /tmp/tmp.jrmlEaDhL3
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[2020-12-23 14:06:07] 🔎 Checking for required utilities...
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[2020-12-23 14:06:07] 👍 All required utilities are installed.
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[2020-12-23 14:06:07] 🌎 Downloading current daily ISO image for Ubuntu 20.04 Focal Fossa...
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[2020-12-23 14:08:01] 👍 Downloaded and saved to /home/user/ubuntu-original-2020-12-23.iso
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[2020-12-23 14:08:01] 🌎 Downloading SHA256SUMS & SHA256SUMS.gpg files...
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[2020-12-23 14:08:02] 🌎 Downloading and saving Ubuntu signing key...
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[2020-12-23 14:08:02] 👍 Downloaded and saved to /home/user/843938DF228D22F7B3742BC0D94AA3F0EFE21092.keyring
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[2020-12-23 14:08:02] 🔐 Verifying /home/user/ubuntu-original-2020-12-23.iso integrity and authenticity...
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[2020-12-23 14:08:09] 👍 Verification succeeded.
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[2020-12-23 14:08:09] 🔧 Extracting ISO image...
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[2020-12-23 14:08:11] 👍 Extracted to /tmp/tmp.jrmlEaDhL3
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[2020-12-23 14:08:11] 🧩 Adding autoinstall parameter to kernel command line...
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[2020-12-23 14:08:11] 👍 Added parameter to UEFI and BIOS kernel command lines.
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[2020-12-23 14:08:11] 🧩 Adding user-data and meta-data files...
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[2020-12-23 14:08:11] 👍 Added data and configured kernel command line.
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[2020-12-23 14:08:11] 👷 Updating /tmp/tmp.jrmlEaDhL3/md5sum.txt with hashes of modified files...
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[2020-12-23 14:08:11] 👍 Updated hashes.
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[2020-12-23 14:08:11] 📦 Repackaging extracted files into an ISO image...
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[2020-12-23 14:08:14] 👍 Repackaged into /home/user/ubuntu-autoinstall-example.iso
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[2020-12-23 14:08:14] ✅ Completed.
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[2020-12-23 14:08:14] 🚽 Deleted temporary working directory /tmp/tmp.jrmlEaDhL3
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[2020-12-23 14:06:07]Starting up...
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[2020-12-23 14:06:07]Created temporary working directory /tmp/tmp.jrmlEaDhL3
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[2020-12-23 14:06:07]Checking for required utilities...
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[2020-12-23 14:06:07]All required utilities are installed.
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[2020-12-23 14:06:07]Downloading current daily ISO image for Ubuntu 20.04 Focal Fossa...
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[2020-12-23 14:08:01]Downloaded and saved to /home/user/ubuntu-original-2020-12-23.iso
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[2020-12-23 14:08:01]Downloading SHA256SUMS & SHA256SUMS.gpg files...
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[2020-12-23 14:08:02]Downloading and saving Ubuntu signing key...
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[2020-12-23 14:08:02]Downloaded and saved to /home/user/843938DF228D22F7B3742BC0D94AA3F0EFE21092.keyring
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[2020-12-23 14:08:02]Verifying /home/user/ubuntu-original-2020-12-23.iso integrity and authenticity...
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[2020-12-23 14:08:09]Verification succeeded.
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[2020-12-23 14:08:09]Extracting ISO image...
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[2020-12-23 14:08:11]Extracted to /tmp/tmp.jrmlEaDhL3
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[2020-12-23 14:08:11]Adding autoinstall parameter to kernel command line...
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[2020-12-23 14:08:11]Added parameter to UEFI and BIOS kernel command lines.
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[2020-12-23 14:08:11]Adding user-data and meta-data files...
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[2020-12-23 14:08:11]Added data and configured kernel command line.
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[2020-12-23 14:08:11]Updating /tmp/tmp.jrmlEaDhL3/md5sum.txt with hashes of modified files...
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[2020-12-23 14:08:11]Updated hashes.
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[2020-12-23 14:08:11]Repackaging extracted files into an ISO image...
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[2020-12-23 14:08:14]Repackaged into /home/user/ubuntu-autoinstall-example.iso
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[2020-12-23 14:08:14]Completed.
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[2020-12-23 14:08:14]Deleted temporary working directory /tmp/tmp.jrmlEaDhL3
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```
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Now you can boot your target machine using ```ubuntu-autoinstall-example.iso``` and it will automatically install Ubuntu using the configuration from ```user-data.example```.

‎user-data.example‎

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version: 1
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identity:
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hostname: ubuntu-server
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password: "$6$exDY1mhS4KUYCE/2$zmn9ToZwTKLhCw.b4/b.ZRTIZM30JZ4QrOQ2aOXJ8yk96xpcCof0kxKwuX1kqLG/ygbJ1f8wxED22bTL4F46P0"
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password: "$6$exDY1mhS4KUYCE/2$zmn9ToZwTKLhCw.b4/b.ZRTIZM30JZ4QrOQ2aOXJ8yk96xpcCof0kxKwuX1kqLG/ygbJ1f8wxED22bTL4F46P0" # ubuntu
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username: ubuntu
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ssh:
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install-server: true
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authorized-keys:
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- ssh-rsa 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

‎user-data.template.yaml‎

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#cloud-config
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autoinstall:
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version: 1
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identity:
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hostname: ${HOSTNAME}
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password: "${ENCRYPTED_PASSWORD}"
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username: ${USERNAME}
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ssh:
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install-server: ${INSTALL_SSH_SERVER}
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authorized-keys:
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- ${PUB_KEY}

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