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ONLY & MULTIPLE PARAMTER IN PACKER

if we have to define 3 builders from different services azure, gcp,aws here we can 


provisioner will run on all builders 


if we want to run on specific builder then we can use only parameter 


"only": ["prod-team","test-team"]


 {

       "builders": [

           {

           "name": "test-team",

           "type": "amazon-ebs",

           "access_key": "AUGQ",

           "secret_key": "Kaurid",

           "region": "us-east-1",

           "instance_type": "t2.micro",

           "source_ami": "ami-02e136e904f3da870",

           "ssh_username": "ec2-user",

           "ami_name": "test-team-{{timestamp}}"



           },

           {

           "name": "prod-team",

           "type": "amazon-ebs",

           "access_key": "AGQ",

           "secret_key": "Kfkt1aurid",

           "region": "us-east-1",

           "instance_type": "t2.micro",

           "source_ami": "ami-02e136e904f3da870",

           "ssh_username": "ec2-user",

           "ami_name": "prod-team-{{timestamp}}"


           },

           {

           "name": "dev-team",

           "type": "amazon-ebs",

           "access_key": "AKIARUPJBF7JN6BKVUGQ",

           "secret_key": "KfU0tFpao0b+BODvc+GG63xN99jTMdfVkt1aurid",

           "region": "us-east-1",

           "instance_type": "t2.micro",

           "source_ami": "ami-02e136e904f3da870",

           "ssh_username": "ec2-user",

           "ami_name": "dev-team-{{timestamp}}"


           }

 ],

       "provisioners": [

              {

              "type": "shell",

              "only": ["dev-team","prod-team"],

              "inline":[

                 "sudo yum install tree"


              ]

              }

       ]



             }


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