Terraform 使用多重循环在Azure上创建Security Group Rules

需求：有多个security group，需给每个security group建立一样的security group rules

subnet=["10.0.0.0/24","10.0.1.0/24","10.0.2.0/24"]    //3 subnets

sg_name=["SG-A","SG-B","SG-C"] //3 names of security group

sr_name=["allow-1","allow-2",...,"allow-100"] // 100 names of security group rule 

st_access=["allow","allow",..."allow"]  //100 times allow for the action

sr_protocol=["TCP","UDP",..."TCP"] // 100 times protocol

*各种创建security group rule的参数皆可定义成list

以下为实现代码：

resource "azurerm_network_security_rule" "sg" {
  count                       = "${length(var.sr_name)*length(var.sg_name)}"

#一共循环100*3次
  name                        = "${var.sr_name[count.index % length(var.sr_name)]}"

#index第一次为0，余数为0，可取sr_name[0]; index 第二次为1，余数为1,取sr_name[1]，以此类推
  priority