Table of Contents

Packer

Packer CentOS7 Example


Table of Contents


Directory structure

/
  centos7.json
  kickstart/centos7/ks.cfg

centos7.json

{
  "_comment": "Build with `packer build -var-file=centos7.json centos.json`",
  "vm_name": "centos7",
  "cpus": "1",
  "disk_size": "65536",
  "http_directory": "kickstart/centos7",
  "iso_checksum": "506e4e06abf778c3435b4e5745df13e79ebfc86565d7ea1e128067ef6b5a6345",
  "iso_checksum_type": "sha256",
  "iso_name": "CentOS-7-x86_64-DVD-1804.iso",
  "iso_url": "http://mirrors.sonic.net/centos/7.5.1804/isos/x86_64/CentOS-7-x86_64-DVD-1804.iso",
  "memory": "512",
  "parallels_guest_os_type": "centos7"
}

kickstart/centos7/ks.cfg

# CentOS 7.x kickstart file - centos7.ks
#
# For more information on kickstart syntax and commands, refer to the
# CentOS Installation Guide:
# https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Installation_Guide/sect-kickstart-syntax.html
#
# For testing, you can fire up a local http server temporarily.
# cd to the directory where this ks.cfg file resides and run the following:
#    $ python -m SimpleHTTPServer
# You don't have to restart the server every time you make changes.  Python
# will reload the file from disk every time.  As long as you save your changes
# they will be reflected in the next HTTP download.  Then to test with
# a PXE boot server, enter the following on the PXE boot prompt:
#    > linux text ks=http://<your_ip>:8000/ks.cfg

# Required settings
lang en_US.UTF-8
keyboard us
rootpw vagrant
authconfig --enableshadow --enablemd5
timezone Asia/Tokyo    # Default UTC

# Optional settings
install
cdrom
user --name=vagrant --plaintext --password vagrant
unsupported_hardware
network --device eth0 --bootproto=dhcp
firewall --disabled
selinux --permissive
# The biosdevname and ifnames options ensure we get "eth0" as our interface
# even in environments like virtualbox that emulate a real NW card
bootloader --location=mbr --append="no_timer_check console=tty0 console=ttyS0,115200 net.ifnames=0 biosdevname=0"
text
skipx
zerombr
clearpart --all --initlabel
autopart
firstboot --disabled
reboot

%packages --nobase --ignoremissing --excludedocs
# vagrant needs this to copy initial files via scp
openssh-clients
# Prerequisites for installing VMware Tools or VirtualBox guest additions.
# Put in kickstart to ensure first version installed is from install disk,
# not latest from a mirror.
kernel-headers
kernel-devel
gcc
make
perl
curl
wget
bzip2
dkms
patch
net-tools
selinux-policy-devel
# Core selinux dependencies installed on 7.x, no need to specify
# Other stuff
sudo
nfs-utils
-fprintd-pam
-intltool

# Microcode updates cannot work in a VM
-microcode_ctl
# unnecessary firmware
-aic94xx-firmware
-alsa-firmware
-alsa-tools-firmware
-atmel-firmware
-b43-openfwwf
-bfa-firmware
-ipw*-firmware
-irqbalance
-ivtv-firmware
-iwl*-firmware
-kernel-firmware
-libertas-usb8388-firmware
-ql*-firmware
-rt61pci-firmware
-rt73usb-firmware
-xorg-x11-drv-ati-firmware
-zd1211-firmware
# Don't build rescue initramfs
-dracut-config-rescue
%end

%post
# configure vagrant user in sudoers
echo "%vagrant ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers.d/vagrant
chmod 0440 /etc/sudoers.d/vagrant
cp /etc/sudoers /etc/sudoers.orig
sed -i "s/^\(.*requiretty\)$/#\1/" /etc/sudoers
# keep proxy settings through sudo
echo 'Defaults env_keep += "HTTP_PROXY HTTPS_PROXY FTP_PROXY RSYNC_PROXY NO_PROXY"' >> /etc/sudoers
%end


Reference



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