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這期內容當中丸趣 TV 小編將會給大家帶來有關 Jenkins 怎樣手動更新 AWS 上面的 ECS 服務，文章內容豐富且以專業的角度為大家分析和敘述，閱讀完這篇文章希望大家可以有所收獲。

以上是整個部署更新的流程圖：

1. 開發人員對上線的代碼打一個 tag，然后把帶 tag 的代碼推到 AWS codecommit 上面。

git   add  -A   *

git   commit   -a -m ${tag}

git   tag    ${tag}

git  push   origin    分支    ${tag}

5.jenkins 進行代碼構建作業：

（首先需要安裝插件：Amazon ECR plugin、Docker plugin）

以下是 jenkins 項目配置的示例：

以下是構建 image 和把 image 推送到 ECR 上

以下是更新 ECS 服務的設置（適用于更新接口、對外接口、定時任務、前端、app 的 H5 前端）：

例子：（api 的配置）

#!/bin/bash

REGION= ap-northeast-1     #區域
REPOSITORY_NAME= exchange-api    #ECR 的存儲庫
CLUSTER= online-exchange     #集群名稱
SERVICE_NAME= online-exchange-api     #服務名稱
FAMILY= online_exchange-api      # 任務定義名稱
NAME= online-exchange-api        # 容器名稱
TASKDEFNAME= online_exchange-api     ## 任務定義名稱

# 列出存儲庫的 URL

REPOSITORY_URI=`aws ecr describe-repositories –repository-names ${REPOSITORY_NAME} –region ${REGION} | jq .repositories[].repositoryUri | tr -d `

# 根據構建的 tag 標簽去創建一個生成任務定義的 json 文件
sudo sed  -e %TAG%;${tag};g  -e %REPOSITORY_URI%;${REPOSITORY_URI};g /opt/update-exchange/update-api/online-ecs-exchange-api.json /opt/update-exchange/update-api/${NAME}-${tag}.json

# 根據 ECR 里面的 URL, 創建一個新的任務定義
aws ecs register-task-definition –family ${FAMILY} –cli-input-json file:///opt/update-exchange/update-api/${NAME}-${tag}.json  –region ${REGION}
SERVICES=`aws ecs describe-services –services ${SERVICE_NAME} –cluster ${CLUSTER} –region ${REGION} | jq .failures[]`

# 獲取最新的版本
REVISION=`aws ecs describe-task-definition –task-definition ${TASKDEFNAME} –region ${REGION} | jq .taskDefinition.revision`

# 創建或者更新服務
if [$SERVICES ==]; then
  echo entered existing service
  DESIRED_COUNT=`aws ecs describe-services –services ${SERVICE_NAME} –cluster ${CLUSTER} –region ${REGION} | jq .services[].desiredCount`
  if [${DESIRED_COUNT} = 0 ]; then
    DESIRED_COUNT= 1
  fi
  aws ecs update-service –cluster ${CLUSTER} –region ${REGION} –service ${SERVICE_NAME} –task-definition ${FAMILY}:${REVISION} 
else
  echo entered new service
  aws ecs create-service –service-name ${SERVICE_NAME} –desired-count 2 –task-definition ${FAMILY} –cluster ${CLUSTER} –region ${REGION}
fi

# 更新服務成功之后，執行清理鏡像，清理文件。
docker  rmi   786381498352.dkr.ecr.ap-northeast-1.amazonaws.com/exchange-api:latest
docker  rmi   786381498352.dkr.ecr.ap-northeast-1.amazonaws.com/exchange-api:${tag}
\rm  /opt/update-exchange/update-api/${NAME}-${tag}.json

以下是 ECS 更新的配置（適用于更新撮合、結算）：

例子 (結算):

#!/bin/bash

REGION= ap-northeast-1
REPOSITORY_NAME= exchange-deal
CLUSTER= online-exchange
SERVICE_NAME= online-exchange-deal
FAMILY= online_exchange-deal
NAME= online-exchange-deal
TASKDEFNAME= online_exchange-deal

REPOSITORY_URI=`aws ecr describe-repositories –repository-names ${REPOSITORY_NAME} –region ${REGION} | jq .repositories[].repositoryUri | tr -d `

#Replace the build number and respository URI placeholders with the constants above
sudo sed  -e %TAG%;${tag};g -e %REPOSITORY_URI%;${REPOSITORY_URI};g /opt/update-exchange/update-deal/online-ecs-exchange-deal.json /opt/update-exchange/update-deal/${NAME}-${tag}.json

#Register the task definition in the repository
aws ecs register-task-definition –family ${FAMILY} –cli-input-json file:///opt/update-exchange/update-deal/${NAME}-${tag}.json  –region ${REGION}
SERVICES=`aws ecs describe-services –services ${SERVICE_NAME} –cluster ${CLUSTER} –region ${REGION} | jq .failures[]`

#Get latest revision
REVISION=`aws ecs describe-task-definition –task-definition ${TASKDEFNAME} –region ${REGION} | jq .taskDefinition.revision`
#首先把預期數改為 0，再刪除服務，再創建新的服務。
if [$SERVICES ==]; then
   echo entered existing service
   aws ecs update-service –cluster  ${CLUSTER}   –service  ${SERVICE_NAME}  –desired-count 0
   sleep 10
   aws ecs delete-service –cluster  ${CLUSTER}   –service ${SERVICE_NAME}
   sleep 100
   aws ecs create-service –cluster ${CLUSTER} –service-name ${SERVICE_NAME} –task-definition ${FAMILY}:${REVISION} –desired-count 1 –launch-type FARGATE –network-configuration awsvpcConfiguration={subnets=[subnet-04a486cb94c9c9032,subnet-0d93a8c5452781c8f],securityGroups=[sg-0c66800c0bdd235fc],assignPublicIp=ENABLED}
else
    echo service does not exist
    echo create a new service
   aws ecs create-service –cluster ${CLUSTER} –service-name ${SERVICE_NAME} –task-definition ${FAMILY}:${REVISION} –desired-count 1 –launch-type FARGATE –network-configuration awsvpcConfiguration={subnets=[subnet-04a486cb94c9c9032,subnet-0d93a8c5452781c8f],securityGroups=[sg-0c66800c0bdd235fc],assignPublicIp=ENABLED}
fi

# 更新服務成功之后，執行清理鏡像，清理文件。
docker  rmi   786381498352.dkr.ecr.ap-northeast-1.amazonaws.com/exchange-deal:latest
docker  rmi   786381498352.dkr.ecr.ap-northeast-1.amazonaws.com/exchange-deal:${tag}
\rm  /opt/update-exchange/update-deal/${NAME}-${tag}.json
 

先刪除服務的目的是為了絕對的保證服務只會存在一個，最后有一個清理鏡像，清理文件，是為了減少磁盤的壓力。

以下是 ECS 更新的配置（適用于更新推送）：

例子 (推送)：

#!/bin/bash

REGION= ap-northeast-1
REPOSITORY_NAME= exchange-ws
CLUSTER= online-exchange
SERVICE_NAME= online-exchange-ws
FAMILY= online_exchange-ws
NAME= online-exchange-ws
TASKDEFNAME= online_exchange-ws

REPOSITORY_URI=`aws ecr describe-repositories –repository-names ${REPOSITORY_NAME} –region ${REGION} | jq .repositories[].repositoryUri | tr -d `

#Replace the build number and respository URI placeholders with the constants above
sudo sed -e %TAG%;${tag};g -e %REPOSITORY_URI%;${REPOSITORY_URI};g /opt/update-exchange/update-ws/online-ecs-exchange-ws.json /opt/update-exchange/update-ws/${NAME}-${tag}.json

#Register the task definition in the repository
aws ecs register-task-definition –family ${FAMILY} –cli-input-json file:///opt/update-exchange/update-ws/${NAME}-${tag}.json  –region ${REGION}
SERVICES=`aws ecs describe-services –services ${SERVICE_NAME} –cluster ${CLUSTER} –region ${REGION} | jq .failures[]`

#Get latest revision
REVISION=`aws ecs describe-task-definition –task-definition ${TASKDEFNAME} –region ${REGION} | jq .taskDefinition.revision`

# 首先把預期數改為 0，等待服務中沒有運行得任務，再去更新任務。
aws ecs update-service –cluster online-exchange   –service  online-exchange-ws  –desired-count 0

while :
do
    count=`aws ecs describe-services –cluster ${CLUSTER} –service ${SERVICE_NAME} | grep runningCount | tail -n1 | egrep -oE [0-9] `
    sleep 30
    if [$count -eq 0];then
       aws ecs update-service –cluster ${CLUSTER} –region ${REGION} –service ${SERVICE_NAME} –task-definition ${FAMILY}:${REVISION} –desired-count 1
       exit
    fi
done
#更新服務成功之后，執行清理鏡像，清理文件。
docker  rmi   786381498352.dkr.ecr.ap-northeast-1.amazonaws.com/exchange-ws:latest
docker  rmi   786381498352.dkr.ecr.ap-northeast-1.amazonaws.com/exchange-ws:${tag}
\rm  /opt/update-exchange/update-ws/${NAME}-${tag}.json

上述就是丸趣 TV 小編為大家分享的 Jenkins 怎樣手動更新 AWS 上面的 ECS 服務了，如果剛好有類似的疑惑，不妨參照上述分析進行理解。如果想知道更多相關知識，歡迎關注丸趣 TV 行業資訊頻道。