如何在使用null-resource时使用count？

huangapple
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英文:

How to use count with null-resource?

问题

I have defined a null resource which looks as below:

  1. resource "null_resource" "mynull-resource" {
  2.   triggers = {
  3.     always-update = timestamp()
  4.   }
  6.   # Connection Block for Provisioners to connect to EC2 Instance
  7.   connection {
  8.     type        = "ssh"
  9.     host        = aws_instance.web[count.index].public_ip  #Giving error
  10.     user        = "ec2-user"
  11.     password    = ""
  12.     private_key = file("ec2keypair.pem")
  13.   }
  14. }

Error:

The "count" object can only be used in "module", "resource", and "data" blocks, and only when the "count" argument is set.

How can I update the connection block to connect to multiple hosts?

I have tried using spat operator but it is not working host = aws_instance.web.*.public_ip

英文:

I have defined a null resource which looks as below:

  1. resource "null_resource" "mynull-resource" {
  2.   triggers = {
  3.     always-update =  timestamp()
  4.   }
  6.   # Connection Block for Provisioners to connect to EC2 Instance
  7.   connection {
  8.     type = "ssh"
  9.     host = aws_instance.web[count.index].public_ip  #Giving error
  10.     user = "ec2-user"
  11.     password = ""
  12.     private_key = file("ec2keypair.pem")
  13.   }

Error:

  1.  The "count" object can only be used in "module", "resource", and "data" blocks, and only when the "count" argument is set.

How can I update the connection block to connect to multiple hosts?

I have tried using spat operator but it is not working host = aws_instance.web.*.public_ip

答案1

得分: 1

使用count在resource下面：

  1. resource "null_resource" "mynull-resource" {
  3.   count = length(aws_instance.web)
  4.  
  5.   triggers = {
  6.     always-update = timestamp()
  7.   }
  9.   # 用于Provisioners连接到EC2实例的连接块
  10.   connection {
  11.     type = "ssh"
  12.     host = aws_instance.web[count.index].public_ip  #产生错误
  13.     user = "ec2-user"
  14.     password = ""
  15.     private_key = file("ec2keypair.pem")
  16.   }
  17. }
英文:

Use count under resource:

  1. resource "null_resource" "mynull-resource" {
  3.   count = length(aws_instance.web)
  4.  
  5.   triggers = {
  6.     always-update =  timestamp()
  7.   }
  9.   # Connection Block for Provisioners to connect to EC2 Instance
  10.   connection {
  11.     type = "ssh"
  12.     host = aws_instance.web[count.index].public_ip  #Giving error
  13.     user = "ec2-user"
  14.     password = ""
  15.     private_key = file("ec2keypair.pem")
  16.   }

huangapple
  • 本文由 发表于 2023年8月9日 12:50:32
  • 转载请务必保留本文链接：https://go.coder-hub.com/76864666-2.html
  • amazon-ec2
  • amazon-web-services
  • terraform
  • terraform-provider-aws
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