前提条件
ElastiCacheへの権限
ElastiCacheに対してフル権限があること。
AWS CLI
以下のバージョンで動作確認済
- AWS CLI 1.10.44
コマンド
aws --version
結果(例)
aws-cli/1.10.44 Python/2.7.11 Darwin/15.5.0 botocore/1.4.34
- 準備
=======
0.1. 変数の確認
プロファイルが想定のものになっていることを確認します。
変数の確認
aws configure list
結果(例)
Name Value Type Location
---- ----- ---- --------
profile elasticache-prjx-mbpr13 env AWS_DEFAULT_PROFILE
access_key ****************XXXX shared-credentials-file
secret_key ****************XXXX shared-credentials-file
region ap-northeast-1 env AWS_DEFAULT_REGION
0.2. 削除対象クラスタ名の指定
変数の設定
ECACHE_CLUSTER_ID="handson-$(date +%Y%m%d)" \
&& echo ${ECACHE_CLUSTER_ID}
- 事前作業
===========
削除対象の確認
コマンド
aws elasticache describe-cache-clusters \
--cache-cluster-id ${ECACHE_CLUSTER_ID}
結果(例)
{
"CacheClusters": [
{
"Engine": "redis",
"CacheParameterGroup": {
"CacheNodeIdsToReboot": [],
"CacheParameterGroupName": "default.redis2.8",
"ParameterApplyStatus": "in-sync"
},
"CacheClusterId": "handson-20160704",
"CacheSecurityGroups": [],
"NumCacheNodes": 1,
"CacheClusterCreateTime": "2016-07-04T01:23:45.678Z",
"AutoMinorVersionUpgrade": true,
"CacheClusterStatus": "available",
"PreferredAvailabilityZone": "ap-northeast-1a",
"ClientDownloadLandingPage": "https://console.aws.amazon.com/elasticache/home#client-download:",
"SecurityGroups": [
{
"Status": "active",
"SecurityGroupId": "sg-xxxxxxxx"
}
],
"CacheSubnetGroupName": "subnet-group-handson-20160704",
"EngineVersion": "2.8.24",
"PendingModifiedValues": {},
"PreferredMaintenanceWindow": "sun:11:00-sun:12:00",
"CacheNodeType": "cache.t2.micro"
}
]
}
- キャッシュクラスターの削除
=============================
変数の確認
cat << ETX
ECACHE_CLUSTER_ID: ${ECACHE_CLUSTER_ID}
ETX
コマンド
aws elasticache delete-cache-cluster \
--cache-cluster-id ${ECACHE_CLUSTER_ID}
結果(例)
{
"CacheCluster": {
"Engine": "redis",
"CacheParameterGroup": {
"CacheNodeIdsToReboot": [],
"CacheParameterGroupName": "default.redis2.8",
"ParameterApplyStatus": "in-sync"
},
"CacheClusterId": "handson-20160704",
"CacheSecurityGroups": [],
"NumCacheNodes": 1,
"CacheClusterCreateTime": "2016-07-04T0l:23:45.678Z",
"AutoMinorVersionUpgrade": true,
"CacheClusterStatus": "deleting",
"PreferredAvailabilityZone": "ap-northeast-1a",
"ClientDownloadLandingPage": "https://console.aws.amazon.com/elasticache/home#client-download:",
"SecurityGroups": [
{
"Status": "active",
"SecurityGroupId": "sg-161efe72"
}
],
"CacheSubnetGroupName": "subnet-group-handson-20160704",
"EngineVersion": "2.8.24",
"PendingModifiedValues": {},
"PreferredMaintenanceWindow": "sun:11:00-sun:12:00",
"CacheNodeType": "cache.t2.micro"
}
}
- 事後作業
===========
3.1. ステータスの確認
コマンド
ECACHE_CLUSTER_STATUS=$( \
aws elasticache describe-cache-clusters \
--cache-cluster-id ${ECACHE_CLUSTER_ID} \
--query 'CacheClusters[].CacheClusterStatus' \
--output text \
) && echo ${ECACHE_CLUSTER_STATUS}
結果(例)
deleting
3.2. キャッシュクラスター不存在の確認
削除に5-10分ほどかかります。
コマンド
aws elasticache describe-cache-clusters \
--cache-cluster-id ${ECACHE_CLUSTER_ID}
結果(例)
An error occurred (CacheClusterNotFound) when calling the DescribeCacheClusters operation: CacheCluster not found: handson-20160704
3.3. イベントの確認
変数の設定
MAX_ITEMS='2'
コマンド
aws elasticache describe-events \
--query "Events[?SourceIdentifier == \`${ECACHE_CLUSTER_ID}\`]" \
--max-items ${MAX_ITEMS}
結果(例)
{
"Events": [
{
"Date": "2016-07-04T01:23:45.678Z",
"Message": "Cache cluster deleted",
"SourceIdentifier": "handson-20160704",
"SourceType": "cache-cluster"
},
{
"Date": "2016-07-04T01:23:45.678Z",
"Message": "Removed cache nodes 0001",
"SourceIdentifier": "handson-20160704",
"SourceType": "cache-cluster"
}
]
}