Packer is a tool for build a golden images also packer is lightwight. As of here, I have used to provision the image using a ansible script and who you guys use this additional options like shell.
- Easy to build a image with a lightweight code
- You can integrate this with automation jenkins (Architacutre included with jenkins)
- Need a IAM user with ec2 access
Reference: packer download
wget https://releases.hashicorp.com/packer/1.7.3/packer_1.7.3_linux_amd64.zip
unzip packer_1.7.3_linux_amd64.zip
mv packer /usr/bin/Check packer version using
packer versionyum install git -y
amazon-linux-extras install ansible2 <------- (optional when you use)
git clone https://github.com/yousafkhamza/packer-ami.git
cd packer-ami
packer build main.pkr.hcl
vim main.pkr.hcl
# ---------------------------------------------
# Variable declaration
# ---------------------------------------------
variable "access_key" {
default = "<your access key>"
}
variable "secret_key" {
default = "<your secret key>"
}
variable "type" {
default = "t2.micro"
}
variable "region" {
default = "us-east-1"
}
# -----------------------------------------------
# Timestamp variable declaration on running time
# -----------------------------------------------
locals { timestamp = regex_replace(timestamp(), "[- TZ:]", "") }
#--------------------------------------------------
# Image Creation
#--------------------------------------------------
source "amazon-ebs" "webserver" {
source_ami_filter {
filters = {
virtualization-type = "hvm"
name = "amzn2-ami-hvm-2.0.*.1-x86_64-ebs"
root-device-type = "ebs"
}
owners = ["amazon"]
most_recent = true
}
access_key = "${var.access_key}"
ami_name = "packer-ami ${local.timestamp}"
instance_type = "${var.type}"
region = "${var.region}"
secret_key = "${var.secret_key}"
security_group_ids = [ "sg-0c8c8b94dc5c55c1d" ]
ssh_username = "ec2-user"
}
build {
sources = ["source.amazon-ebs.webserver"]
provisioner "ansible" {
playbook_file = "./play.yml"
}
post-processor "shell-local" {
inline = ["echo AMI Created"]
}
}vim play.yml (Image provision using ansible)
---
- name: 'Provision Image'
hosts: localhost
gather_facts: false
become: true
vars:
- git_url: "https://github.com/yousafkhamza/aws-elb-site.git"
tasks:
- name: "install Apache"
yum:
name:
- httpd
state: present
- name: "Service start"
service:
name: httpd
state: restarted
enabled: true
- name: "Cloning Git Repository"
git:
repo: "{{ git_url }}"
dest: /var/website/
- name: "Copy from /var/website to /var/www/html/"
copy:
src: /var/website/
dest: /var/www/html/
owner: apache
group: apache
remote_src: trueIt's just build a golden image through a new tool using packer and its tool designed from hashicorp and furthermore it's lightweight machine image builder.
