有没有办法在从cloudformation模板初始化时标记根卷?
-
21-12-2019 - |
题
我正在通过cloud formation脚本创建一个实例。
我发现附加操作系统分区的唯一方法是通过"BlockDeviceMappings"属性。(我之前尝试过使用"Volumes"属性,但无法挂载实例,系统告诉我/dev/sda已经映射并回滚实例创建)
这是我的模板的相关部分:
"Resources" :
{
"Ec2Instance" :
{
"Type" : "AWS::EC2::Instance",
"Properties" :
{
"BlockDeviceMappings" :
[{
"DeviceName" : "/dev/sda",
"Ebs" :
{
"VolumeSize" : { "Ref" : "RootVolumeSize" },
"SnapshotId" :
{ "Fn::FindInMap" : [ "RegionMap",
{ "Ref" : "AWS::Region" }, "RootVolumeSnapshotId" ]
}
}
}],
...
}
}
我的问题是,如何标记Ebs卷,我在这里创建"BlockDeviceMappings"属性?我没有找到明显的解决方案。
谢谢.
解决方案
能够通过AWS CLI接口、IAM角色和UserData初始化使其工作。
将此添加到 AWS::EC2::Instance:Properties:UserData
{ "Fn::Base64" : { "Fn::Join" : [ "\n", [
"#!/bin/bash",
"set -eux",
"exec > >(tee /tmp/user-data.log | logger -t user-data -s 2>/dev/console) 2>&1",
{ "Fn::Join" : [ "", [
"AWS_STACK_NAME='", { "Ref" : "AWS::StackName" }, "'"
]]},
{ "Fn::Join" : [ "", [
"AWS_ROOT_VOLUME_SNAPSHOT_ID='",
{ "Fn::FindInMap" :
[ "RegionMap", { "Ref" : "AWS::Region" }, "RootVolumeSnapshotId" ]},
"'"
]]},
"AWS_INSTANCE_ID=$( curl http://169.254.169.254/latest/meta-data/instance-id )",
"",
"AWS_HOME=/opt/aws",
"AWS_BIN_DIR=\"${AWS_HOME}/bin\"",
"export EC2_HOME=\"${AWS_HOME}/apitools/ec2\"",
"export JAVA_HOME=/etc/alternatives/jre_1.7.0",
"",
"ROOT_DISK_ID=$(",
" \"${AWS_BIN_DIR}/ec2-describe-volumes\" \\",
" --filter \"attachment.instance-id=${AWS_INSTANCE_ID}\" \\",
" --show-empty-fields \\",
" | grep '^VOLUME' \\",
" | awk '{printf \"%s,%s\\n\", $4, $2}' \\",
" | grep '^${AWS_ROOT_VOLUME_SNAPSHOT_ID}' \\",
" | cut --delimiter=, --fields=2",
" exit ${PIPESTATUS[0]}",
" )",
"\"${AWS_BIN_DIR}/ec2-create-tags \\",
" \"${ROOT_DISK_ID}\" \\",
" --tag \"Name=${AWS_STACK_NAME}-root\"",
""
]]}}
还必须添加对IAM角色的引用,该角色可以描述卷并创建标签。
将此添加到"资源"部分:
"InstanceProfile" :
{
"Type" : "AWS::IAM::InstanceProfile",
"Properties" :
{
"Path" : "/",
"Roles" : [ "ec2-tag-instance" ]
}
}
在 Instance
资源:
"Ec2Instance" :
{
"Type" : "AWS::EC2::Instance",
"Properties" :
{
...
"IamInstanceProfile" : {"Ref" : "InstanceProfile"},
...
}
}
而在 IAM
UI创建一个名为 ec2-tag-instance
, ,并分配此策略:
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"ec2:Describe*",
"ec2:CreateTags"
],
"Resource": "*"
}
]
}
这就是说,将是更好,如果 BlockDeviceMappings:Ebs
曾支持 Tags
元素。
其他提示
谢谢亚历克斯,
我发现 ec2-create-tags :)
后有一个双引号缺失 "\"${AWS_BIN_DIR}/ec2-create-tags\" \\",
" \"${ROOT_DISK_ID}\" \\",
" --tag \"Name=${AWS_STACK_NAME}-root\"",
.
此外,如果该实例不居住在默认的US-EAST-1区域中,请在 ec2-create-tags - 区域区域” ec2-describe-volumes 命令。 如果标记了CloudFormation堆栈,并且希望您的EC2附加卷从堆栈中复制到标记,则可以使用以下UserData值。
Fn::Base64: !Sub |
#!/bin/bash -xe
exec > /tmp/part-001.log 2>&1
# --==Tagging Attached Volumes==--
TAGS=$(aws cloudformation describe-stacks --stack-name ${AWS::StackName} --query 'Stacks[0].Tags' --region ${AWS::Region})
EC2_INSTANCE_ID=$(curl -s http://169.254.169.254/latest/meta-data/instance-id)
EBS_IDS=$(aws ec2 describe-volumes --filters Name=attachment.instance-id,Values="$EC2_INSTANCE_ID" --region ${AWS::Region} --query 'Volumes[*].[VolumeId]' --out text | tr "\n" " ")
aws ec2 create-tags --resources $EBS_IDS --tags "$TAGS" --region ${AWS::Region}
TAGS=$(echo $TAGS | tr "Key" "key" | tr "Value" "value")
aws ecs tag-resource --resource-arn arn:aws:ecs:${AWS::Region}:${AWS::AccountId}:cluster/${EcsClusterName} --tags "$TAGS"
.
-
将所有stdout和stderr写入文件以进行调试:
`exec> /tmp/part-001.log 2>&1
-
(需要权限)从堆栈中获取标记:
TAGS=$(aws cloudformation describe-stacks --stack-name ${AWS::StackName} --query 'Stacks[0].Tags' --region ${AWS::Region})
-
从元数据端点获取EC2实例ID:
EC2_INSTANCE_ID=$(curl -s http://169.254.169.254/latest/meta-data/instance-id)
-
(需要权限)获取EBS ID:
EBS_IDS=$(aws ec2 describe-volumes --filters Name=attachment.instance-id,Values="$EC2_INSTANCE_ID" --region ${AWS::Region} --query 'Volumes[*].[VolumeId]' --out text | tr "\n" " ")
-
(需要权限)将标签添加到EBS卷中:
aws ec2 create-tags --resources $EBS_IDS --tags "$TAGS" --region ${AWS::Region}
-
ECS标记的格式标签:
TAGS=$(echo $TAGS | tr "Key" "key" | tr "Value" "value")
-
(需要权限)标记ECS集群:
aws ecs tag-resource --resource-arn arn:aws:ecs:${AWS::Region}:${AWS::AccountId}:cluster/${EcsClusterName} --tags "$TAGS"
策略应该如下所示:
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "VisualEditor0",
"Effect": "Allow",
"Action": [
"ec2:DeleteTags",
"ec2:CreateTags",
"ecs:TagResource",
"cloudformation:DescribeStacks"
],
"Resource": "*"
}
]
}
.您可以使用CloudFormation模板来创建CloudWatch事件规则和Lambda等资源。不仅可以在实例创建事件时才会触发lambda调用,但更新发生在实例标记时。
这是我在EC2 UserData中所做的。我认为它比以上的答案更简单。
Key=<Your Tag Name>
Value=<Your Tag Value>
Region=$(curl -s http://169.254.169.254/latest/dynamic/instance-identity/document | grep -oP "(?<=\"region\" : \")[^\"]+")
aws ec2 create-tags --resources $(aws ec2 describe-instances --instance-ids $(curl -s http://169.254.169.254/latest/meta-data/instance-id) --region $Region | grep -oP "(?<=\"VolumeId\": \")[^\"]+") --tags Key=$Key,Value=$Value --region $Region
.