Packer In Oracle Cloud

In this article we will see how to create custom image in oracle cloud using packer..

1. Fetch all required parameters from oci

  region code:

  availability_domain :  

  tenancy_ocid :

  user_ocid :

  base_image_ocid : 

  compartment_ocid :

  shape : 

  subnet_ocid :

  fingerprint : 

  key_file :

a. region code:

Give the region code from where you wanted to create the custom image 

Here I want to create custom image in the phoenix region , so my region code is us-phoenix-1

Click Here for Region Codes

b. availability_domain :  AD nothing but a DataCenter. 

   while creating the instance u will get the ad name :  EAbO:PHX-AD-1

c. Get the tenancy & user ocid :

you need to create public and private key for instance:

open your linux terminal or gitbash in windows then  enter these commands:

$ openssl genrsa -out key.pem 2048  

$ openssl rsa -in key.pem -outform PEM -pubout -out public.pem 

Goto IAM -> Users -> your user name

upload the public key into API keys section

d. copy that fingetprint

e. Get the Base image ocid   Click Here to get the Image OCID List  

   Here I would like to create oracle linux 7 so I need to click on Oracle Linux 7 then click on ReadMore.. There you will get the image code for specific region, copy that image ocid

f. create vcn in that region and also create subnet , copy that subnet ocid

   open the required ports 

g. key_file is the location of the private key file path

Install the packer : Click Here

Then add the path into environment path

create a file oci_image.json and copy the below text , replace with your ocids 

{

"builders": [
  {
    "type": "oracle-oci",
    "region": "us-phoenix-1",
    "availability_domain": "EAbO:PHX-AD-1",
    "tenancy_ocid" : "ocid1.tenancy.oc1..aaaaaaayyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy",
    "base_image_ocid": "ocid1.image.oc1.phx.aaaaaaaaiqmtu5jaqezxl6jz6ozopb4l3vfl7dt3hmf4o6yseuvw3rzeabxa",
    "compartment_ocid": "ocid1.compartment.oc1..aazzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz",
    "image_name": "MyOCILinux-PackerPractice",
    "shape": "VM.Standard2.1",
    "ssh_username": "opc",
    "subnet_ocid": "ocid1.subnet.oc1.phx.aaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
    "user_ocid" : "ocid1.user.oc1..aaacccccccccccccccccccccccccccccccccccccccccccccccc",
    "fingerprint": "90:c2:89:8a:56:a2:54:12:58:d4:e3:a2:e4",
    "key_file" : "C:\\Users\\urname\\Documents\\Practice\\packer\\oracle-cloud\\key.pem"
  }
            ],
 "provisioners": [
    {
  "type": "shell",
  "inline": [
    "sudo su",
    "sudo yum update -y",
	"sudo yum install docker -y",
	"sudo yum install git -y",
    "sudo yum install httpd -y"
           ]
    }
  ]
}

then execute the script 

packer build oci_image.json

Check your oci console 

Thats it, You have successfully created Custom Image Using Packer in Oracle Cloud..

Thanks for reading,

Tharun.K

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