remote-exec Provisioner in terraform

 ##### remote-exec Provisioner demo

resource "aws_instance" "dev-instance" {

  ami           = "ami-05548f9cecf47b442"

  instance_type = "t2.micro"

  key_name = "pgsql_key"

  

  connection {

    type = "ssh"

    user = "ec2-user"

    private_key = file("./pgsql_key.pem")

    host = self.public_ip

  }

  provisioner "remote-exec" {

    inline = [ 

        "sudo yum install -y mysql*"

     ]

    

  }

}

Note: we can use existing key or generate new key 

Planning failed. Terraform encountered an error while generating this plan.

 

Error: invalid value for name (must only contain alphanumeric characters, hyphens, underscores, commas, periods, @ symbols, plus and equals signs)

Solutions : please check data type in associtaed variable block 

How to use variable in terraform ?

 

main.tf

provider "aws" {

    region = "us-east-1"

  

}

resource "aws_security_group" "allow_ssh" {

    name = "allow_ssh_oracle_mssql_port"

    description = "allow_ssh_oracle_mssql_port "

    ingress {

    description      = "ssh-port"

    from_port        = 22

    to_port          = 22

    protocol         = "tcp"

    cidr_blocks      = [var.my_ip]

  }

  ingress {

    description      = "Oracle-port "

    from_port        = 1521

    to_port          = 1521

    protocol         = "tcp"

    cidr_blocks      = [var.my_ip]

  }

  ingress {

    description      = "MSSQL-Port"

    from_port        = 1433

    to_port          = 1433

    protocol         = "tcp"

    cidr_blocks      = [var.my_ip]

  }

  egress {

    from_port        = 0

    to_port          = 0

    protocol         = "-1"

    cidr_blocks      = ["0.0.0.0/0"]

    #ipv6_cidr_blocks = [var.my_ip]

  }

  tags = {

    Name = "allow_imp_port_Oracle_MSSQL_ssh"

  }

} 

  

variables.tf

variable "my_ip" {

  default = "34.207.6.67/32"

}

Terraform commands

terraform init

terraform plan

terraform apply

How to Print output from resources using terraform ?

test_output.tf 

provider "aws" {

    region = "us-east-1"

  

}

resource "aws_eip" "eip1" {

    domain = "vpc"

  

}

output "My_Public_ip" {

  

   value = aws_eip.eip1.public_ip

}

Terraform commands

terraform init

terraform plan

terraform apply