docker swarm 健康管理

docker swarm 健康管理

health  check在swarm中应用

mkdir mynginx
cd mynginx/
vi Dockerfile
写入以下内容
FROM 192.168.172.128:5000/centos7 
RUN yum -y install epel-release
RUN yum -y install nginx
COPY index.html /usr/share/nginx/html
EXPOSE 80
CMD ["nginx","-g","daemon off;"]

docker build -t 192.168.172.128:5000/mynginx .
docker run -dit --name test --health-cmd "curl --fail http://localhost/ || exit 1" --health-timeout 5s --health-interval 8s -p 80 192.168.172.128:5000/mynginx

 模拟不健康

docker run -dit --name test2 --health-cmd "curl --fail http://localhost/opexit || exit 1" --health-timeout 5s --health-interval 8s -p 80 192.168.172.128:5000/mynginx

 创建secret

openssl rand -base64 20  | docker secret create  my_secret2 -
 
openssl rand -base64 20  > password.txt
docker secret create my_secret3 password.tx

创建自定义的overlay网络

docker network  create -d overlay my_priv

创建mysql  service

docker service  create --name wpmysql --network my_priv  --secret source=my_secret2,target=mysql_root_password --secret source=my_secret3,target=mysql_user_password -e MYSQL_ROOT_PASSWORD_FILE="/run/secrets/mysql_root_password" -e MYSQL_PASSWORD_FILE="/run/secrets/mysql_user_password" -e MYSQL_USER="wordpress" -e MYSQL_DATABASE="wordpress" 192.168.172.128:5000/mysql

验证：

 创建wordpress  service