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Memo/Terraform/awshttps://dexlab.net:443/pukiwiki/index.php?Memo/Terraform/aws |
AWS †
AWS Provider Version 3でエラー †
is set of object with XX elements †
既存リソースの参照 †
data.aws_instance(s): 既存EC2の参照 †
data "aws_instances" "web" {
instance_tags = {
"Name" = "web-*"
}
instance_state_names = ["running", "stopped"]
}
# 参照する場合
# count = length(data.aws_instances.web.ids)
# data.aws_instances.web.public_ips[count.index]
AMI †
s3 bucketとobjectの生成 †
resource "aws_s3_bucket" "example" {
bucket = "example-bucket"
acl = "private"
}
locals {
s3_objects = [
{
key : "index.html"
source : "contents/index.html"
},
{
key: "top.html"
source: "contents/top.html"
}
]
}
resource "aws_s3_bucket_object" "object" {
count = length(local.s3_objects)
bucket = aws_s3_bucket.example.id
key = local.s3_objects[count.index].key
source = local.s3_objects[count.index].source
}
root_block_device,ebs_block_deviceで分けて処理をしたい †
resource "null_resource" "backup_web_ebs1" { count = length(aws_instance.web) provisioner "local-exec" { command = <<EOD aws ec2 create-tags \ --tags Key=backup:DailyBackup7Days,Value=${count.index == 0 ? true : false} \ --resources ${element(aws_instance.web[count.index].ebs_block_device[*].volume_id, 0)} \ --profile ${var.aws_profile} \ --region ${var.aws_region} EOD } }
locals { web_ebs1 = "${flatten(aws_instance.web.*.ebs_block_device)}" } resource "null_resource" "backup_web_ebs1" { count = "${length(aws_instance.web.*.id)}" provisioner "local-exec" { command = <<EOD aws ec2 create-tags \ --tags Key=backup:DailyBackup7Days,Value=${count.index == 0 ? true : false} \ --resources ${lookup(local.web_ebs1[count.index], "volume_id")} \ --profile ${var.aws_profile} \ --region ${var.aws_region} EOD } } aws_instance 内の ebs_block_device の volume_id の参照 †
output "ebs_test01" {
value = "${aws_instance.web[0].ebs_block_device}"
}
# 結果
ebs_test01 = [
{
"delete_on_termination" = true
"device_name" = "/dev/sdf"
"encrypted" = false
"iops" = 100
"kms_key_id" = ""
"snapshot_id" = ""
"volume_id" = "vol-0123456789abcdef"
"volume_size" = 5
"volume_type" = "gp2"
},
]
output "ebs_test02" {
value = "${aws_instance.web[0].ebs_block_device[0].volume_id}"
}
# 結果: エラー
# Block type "ebs_block_device" is represented by a set of objects, and set
# elements do not have addressable keys. To find elements matching specific
# criteria, use a "for" expression with an "if" clause.
output "ebs_test03" {
value = "${element(aws_instance.web[0].ebs_block_device[*].volume_id, 0)}"
}
# 結果
ebs_test03 = vol-0123456789abcdef
output "ebs_test01" {
value = "${aws_instance.web.*.ebs_block_device}"
}
# result
ebs_test01 = [
[
map[delete_on_termination:1 device_name:/dev/sdf encrypted:1 iops:100 snapshot_id: volume_id:vol-0123456789abcdef volume_size:5 volume_type:gp2]
],
[
map[delete_on_termination:1 device_name:/dev/sdf encrypted:1 iops:100 snapshot_id: volume_id:vol-0f50829f1dfbc02ca volume_size:5 volume_type:gp2]
]
]
output "ebs_test02" {
value = "${lookup(aws_instance.web.0.ebs_block_device[0], "volume_id")}"
}
# result
ebs_test02 = vol-0123456789abcdef
output "ebs_test04" {
value = "${slice(flatten(aws_instance.web.*.ebs_block_device[0]), 0, 1)}"
}
# result
ebs_test04 = [
{
delete_on_termination = 1,
device_name = /dev/sdf,
encrypted = 1,
iops = 100,
snapshot_id = ,
volume_id = vol-0123456789abcdef,
volume_size = 5,
volume_type = gp2
}
]
ACM †EC2を作る時は、リソース毎に分ける †AWS上のIDが分かれているリソース(EC2, EBS, SecurityGroup)を作る場合、ID毎にリソースを分けて作成する事で保守性が上がる。
SNSメッセージをSlackへ通知 †
Lambda †
CloudFront †
WAF †
policy jsonの代わりに aws_iam_policy_document を使う †terraformのドキュメントの例には「policy = <json>」のように書いてある部分もあるが、毎回差分が出る不具合があるので、aws_iam_policy_documentを使うと良さそう。
既存EC2にIAM roleを付けたい †
セキュリティグループのルールはaws_security_group_ruleを使う †
No valid credential sources found for AWS Provider. †
tfファイル内で複数AWSアカウント、複数リージョンを扱う †
VPC Peering †
AWS account_id/arn/user_idの取得 †// "${data.aws_caller_identity.main.account_id}" として参照できる
data "aws_caller_identity" "main" {}
EC2起動時にuser_dataを渡す †
セキュリティグループを後から変更しようとするとEC2を作り直してしまう †
aws_nat_gateway †
複数リソースの指定 †
variable "ec2_subnets" { default = ["subnet-xxxx","subnet-xxxx","subnet-xxxx"] }
resource "aws_instance" "web" {
...
count = 4
subnet_id = "${var.ec2_subnets[count.index % length(var.ec2_subnets)]}"
}
RDS †AWS: aws_db_instance - Terraform by HashiCorp EC2-Classic上に作る場合の注意 †classic network上にRDSを作る場合にsubnetのエラーが出る。v0.12.30 で確認 Error: Error creating DB Instance: InvalidVPCNetworkStateFault: Cannot create the DB Instance because db subnet group has not been specified which is required for a private DBInstance creation. 解決:
VPCの作成 † |
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