Docker进阶
总览
火药不制成枪炮是没有威力的； Docker 不搞成编排而搞成单容器的形式也是没有什么意义的； 通常10个以下的集群节点，用 Docker Swarm，以上的用 k8s 作 容器编排； 未来：云原生，现在所做的大多数功能开发都是没有意义的，因为有行业成熟的模板。
Docker Compose
Docker Swarm
Docker Stack / Docker Secret / Docker Config
综上都是为 k8s 做铺垫
Docker Compose
是什么
定义运行多个容器（批量容器编排，相当于把一个项目的各个部分的启动次序写在配置里）； 是Docker官方的开源项目，需要安装；
怎么用
Define your app’s environment with a Dockerfile so it can be reproduced anywhere. Define the services that make up your app in docker-compose.yml so they can be run together in an isolated environment. Run docker-compose up and Compose starts and runs your entire app.
解决的问题
如果用Dockerfile，需要整半天，run很多遍 而compose可以根据配置文件批量打包（配置文件下文学习）
现在开始安装 Docker Compose
下载
官网的地址 sudo curl -L "https://github.com/docker/compose/releases/download/1.27.3/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose 国内的镜像（版本可以跟着官网的版本指定）： curl -L https://get.daocloud.io/docker/compose/releases/download/1.27.3/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose
授权
sudo chmod +x /usr/local/bin/docker-compose
测试
[root@10-9-48-229 bin]# docker-compose version docker-compose version 1.27.3, build 4092ae5d docker-py version: 4.3.1 CPython version: 3.7.7 OpenSSL version: OpenSSL 1.1.0l 10 Sep 2019
现在开始根据 https://docs.docker.com/compose/gettingstarted/ 体验 Docker Compose （python + redis 实现计数器）
/home/composetest 会产生4个文件
app.py # 项目 requirements.txt # 项目需要的依赖 docker images 能够看到 Dockerfile # 构建镜像，项目打包为镜像 docker-compose.yml # 编排项目，定义环境及服务/规则
/home/composetest 目录下启动 docker-compose up （下载很久..）
docker-compose build
docker-compose up 最终启动了两个项目，因为 docker-compose.yml 中的 services 下是两个服务
Starting composetest_redis_1 ... done Starting composetest_web_1 ... done
克隆会话 查看项目/依赖/测试项目
[root@10-9-48-229 ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 0e0bdd4498cb composetest_web "flask run" 11 hours ago Up 4 minutes 0.0.0.0:5000->5000/tcp composetest_web_1 0bbca033781a redis:alpine "docker-entrypoint.s…" 11 hours ago Up 4 minutes 6379/tcp composetest_redis_1 [root@10-9-48-229 ~]# curl localhost:5000 Hello World! I have been seen 1 times. [root@10-9-48-229 ~]# curl localhost:5000 Hello World! I have been seen 2 times.
服务
默认的服务名：文件名_服务名_num (num 表示副本数量)
网络（项目中的内容都在同一个网络下，域名访问。保证了 HA 高可用）
[root@10-9-48-229 ~]# docker network ls NETWORK ID NAME DRIVER SCOPE 0965bf78dff5 bridge bridge local b180d2b16863 composetest_default bridge local 1e34f8f42875 host host local 804e7b4c9290 none null local [root@10-9-48-229 ~]# docker network inspect composetest_default [ { "Name": "composetest_default", "Id": "b180d2b1686314666b146a2c68922f25911e8f2fbe2608e7d7973cf66e42fa05", "Created": "2020-09-18T21:43:00.921622396+08:00", "Scope": "local", "Driver": "bridge", "EnableIPv6": false, "IPAM": { "Driver": "default", "Options": null, "Config": [ { "Subnet": "172.18.0.0/16", "Gateway": "172.18.0.1" } ] }, "Internal": false, "Attachable": true, "Ingress": false, "ConfigFrom": { "Network": "" }, "ConfigOnly": false, "Containers": { "0bbca033781a7c8c1a45747707db71f9a30fcd829c0c3deecb7ec048e258b4a1": { "Name": "composetest_redis_1", "EndpointID": "4aaa46b588bd8efb761b51c20820387a307d7ee7e5a0e358d06fcbd606110f0c", "MacAddress": "02:42:ac:12:00:03", "IPv4Address": "172.18.0.3/16", "IPv6Address": "" }, "0e0bdd4498cbdcd154fc4f61cbeb46abe69c553a649f44caf1ac65465dd6500e": { "Name": "composetest_web_1", "EndpointID": "cc3879fabde56428c8db4b90ab8f21e1355610b3d0680bedf2aca17c92928f04", "MacAddress": "02:42:ac:12:00:02", "IPv4Address": "172.18.0.2/16", "IPv6Address": "" } }, "Options": {}, "Labels": { "com.docker.compose.network": "default", "com.docker.compose.project": "composetest", "com.docker.compose.version": "1.27.3" } } ]
停止项目
docker-compose down # /home/composetest # 或 ctrl + c
Docker Compose 中的 docker-compose.yaml
https://docs.docker.com/compose/compose-file/#compose-file-structure-and-examples
docker-compose.yaml 规则，多写 多看 就会了
# 3层: version: '' # 版本 service: # 服务 服务1: web # 服务配置 images build network depends_on: # 依赖的服务需要先启动 - db - redis …… 服务2: redis …… # 其他配置: 网络/卷/全局规则 volumes: networks: configs:
利用 docker-compose 一键部署单体的 WP 博客
https://docs.docker.com/compose/wordpress/ 官网提供了部署 wordpress 博客的 demo 所谓 wordpress ，是使用PHP语言开发的开源博客
建文件夹/var/www/html 建文件夹mkdir /usr/local/etc/php/conf.d，其下建文件vi uploads.ini尝试解决wordpress上传安装插件的问题
uploads.ini内容
file_uploads = On memory_limit = 128M upload_max_filesize = 512M post_max_size = 128M max_execution_time = 600
后话，安装插件的问题是这样解决的
安装或者更新nss yum install nss 或者 yum update nss
操作很简单(配置文件写好了，所有的东西都是从网上下载)/data/my_wordpress目录后期改
[root@10-9-48-229 home]# mkdir my_wordpress [root@10-9-48-229 home]# cd /home/my_wordpress [root@10-9-48-229 my_wordpress]# vim docker-compose.yml version: '3.3' services: db: image: mysql:5.7 volumes: - db_data:/var/lib/mysql restart: always # command: --default-authentication-plugin=mysql_native_password 如果是mysql8的话，和restart并列 ports: # 如果不写端口映射的话，外部无法连接该mysql - "3306:3306" environment: MYSQL_ROOT_PASSWORD: root MYSQL_DATABASE: wordpress MYSQL_USER: wordpress MYSQL_PASSWORD: wordpress wordpress: depends_on: # 依赖上方的 db service - db image: wordpress:latest ports: - "8000:80" volumes: - ./wp_site:/var/www/html - ./uploads.ini:/usr/local/etc/php/conf.d/uploads.ini restart: always environment: WORDPRESS_DB_HOST: db:3306 WORDPRESS_DB_USER: wordpress WORDPRESS_DB_PASSWORD: wordpress WORDPRESS_DB_NAME: wordpress volumes: db_data: {} "docker-compose.yml" [New] 29L, 592C written [root@10-9-48-229 my_wordpress]# docker-compose up # 部署&启动 docker-compose up -d 可以后台启动
查看 docker 服务(云主机开启 8000 端口)
[root@10-9-48-229 my_wordpress]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 4a2a089d7ac7 wordpress:latest "docker-entrypoint.s…" 3 minutes ago Up 3 minutes 0.0.0.0:8000->80/tcp my_wordpress_wordpress_1 791e8fe8733e mysql:5.7 "docker-entrypoint.s…" 3 minutes ago Up 3 minutes 33060/tcp, 0.0.0.0:3310->3306/tcp my_wordpress_db_1
数据库客户端连接有问题可以尝试
#进入mysql容器 docker-compose exec db bash #登陆数据库 mysql -u root -p 密码是somewordpress use mysql; #开启root远程访问权限 grant all on *.* to 'root'@'%'; #修改加密规则 alter user 'root'@'localhost' identified by 'root' password expire never; #更新密码 alter user 'root'@'%' identified with mysql_native_password by 'root'; #刷新权限 flush privileges;
安装Nginx(不搞docker了，步步为营)
wget -c http://nginx.org/download/nginx-1.18.0.tar.gz tar -zxvf nginx-1.18.0.tar.gz gcc -v yum -y install gcc yum install -y pcre pcre-devel yum install -y zlib zlib-devel yum install -y openssl openssl-devel # nginx-1.18.0目录下执行 ./configure --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module make make install cd /usr/local/nginx # 编辑配置文件
配置文件
worker_processes 1;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
sendfile on;
keepalive_timeout 65;
upstream wordpress {
server 106.75.32.166:8000;#fail_timeout=10s
}
server {
listen 80;
server_name blog.possible2dream.cn;
#rewrite ^/(.*)$ https://blog.possible2dream.cn/$1 permanent;
location / {
proxy_pass http://wordpress;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
#https访问页面是乱的，不知原因
#server {
# listen 443 ssl;
# server_name blog.possible2dream.cn;
#
# ssl_certificate /etc/certs/Nginx/blog.possible2dream.cn.crt;
# ssl_certificate_key /etc/certs/Nginx/blog.possible2dream.cn.key;
# ssl_session_cache shared:SSL:1m;
# ssl_session_timeout 5m;
# ssl_ciphers HIGH:!aNULL:!MD5;
# ssl_prefer_server_ciphers on;
#
# location / {
# proxy_pass http://wordpress;
# proxy_set_header Host $host;
# proxy_set_header X-Real-IP $remote_addr;
# proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
# }
#}
}
启动nginx
cd /usr/local/nginx/sbin ./nginx ps -ef | grep nginx
浏览器访问 106.75.32.166:8000/wp-admin/ 进入后台管理(chhh/浏览器记住密码)
http://possible2dream.cn:8000/ 或跳转进入 我的博客
编写自己的微服务上线
（用 Springboot 实现一个计数器）
HelloController
package com.example.demo.controller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.redis.core.StringRedisTemplate; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class HelloController { @Autowired StringRedisTemplate redisTemplate; @GetMapping("/hello") public String hello() { Long views = redisTemplate.opsForValue().increment("views:"); return "hello,world丶views:" + views; } }
Dockerfile
FROM java:8 COPY *.jar /app.jar CMD ["--server.port=8080"] EXPOSE 8080 ENTRYPOINT ["java","-jar","/app.jar"]
docker-compose.yml
version: '3.8'
services:
gfpz:
build: .
image: gfpz
depends_on:
- redis
ports:
- "8080:8080"
redis:
image: "library/redis:alpine"
上传到服务器部署/启动 （玛德，这个网络是真的恶心，老子都重装了云主机的系统，发现传文件还是巨慢，就是网络的原因，fuck丶）
[root@10-9-48-229 gfpz_app]# pwd /home/gfpz_app [root@10-9-48-229 gfpz_app]# ls demo-0.0.1-SNAPSHOT.jar docker-compose.yml Dockerfile [root@10-9-48-229 gfpz_app]# docker-compose up
访问测试
[root@10-9-48-229 gfpz_app]# curl localhost:8080 {"timestamp":"2020-09-20T02:43:41.071+00:00","status":404,"error":"Not Found","message":"","path":"/"}[root@10-9-48-229 gfpz_app]# curl localhost:8080/hello hello,world丶views:1[root@10-9-48-229 gfpz_app]# curl localhost:8080/hello hello,world丶views:2[root@10-9-48-229 gfpz_app]#
Docker Swarm
上文的 Docker Compose 还是仅仅解决了单机的问题
Docker Swarm 才能集群方式部署（买4台服务器：1核2G，做完实验可以释放，只花几块钱，24小时后可退钱）
4台都安装 Docker
现在开始搭建集群
在 docker-1 服务器上 初始化集群 用内网IP省钱
[root@iZ2vc84009csu7682v6qxoZ ~]# docker network ls NETWORK ID NAME DRIVER SCOPE 4a1c8a38a18e bridge bridge local 50909c9b5d34 host host local d6ebf3a70ebb none null local [root@iZ2vc84009csu7682v6qxoZ ~]# docker swarm --help Usage: docker swarm COMMAND Manage Swarm Commands: ca Display and rotate the root CA init Initialize a swarm join Join a swarm as a node and/or manager join-token Manage join tokens leave Leave the swarm unlock Unlock swarm unlock-key Manage the unlock key update Update the swarm Run 'docker swarm COMMAND --help' for more information on a command. [root@iZ2vc84009csu7682v6qxoZ ~]# docker swarm init --help Usage: docker swarm init [OPTIONS] Initialize a swarm Options: --advertise-addr string Advertised address (format: <ip|interface>[:port]) --autolock Enable manager autolocking (requiring an unlock key to start a stopped manager) --availability string Availability of the node ("active"|"pause"|"drain") (default "active") --cert-expiry duration Validity period for node certificates (ns|us|ms|s|m|h) (default 2160h0m0s) --data-path-addr string Address or interface to use for data path traffic (format: <ip|interface>) --data-path-port uint32 Port number to use for data path traffic (1024 - 49151). If no value is set or is set to 0, the default port (4789) is used. --default-addr-pool ipNetSlice default address pool in CIDR format (default []) --default-addr-pool-mask-length uint32 default address pool subnet mask length (default 24) --dispatcher-heartbeat duration Dispatcher heartbeat period (ns|us|ms|s|m|h) (default 5s) --external-ca external-ca Specifications of one or more certificate signing endpoints --force-new-cluster Force create a new cluster from current state --listen-addr node-addr Listen address (format: <ip|interface>[:port]) (default 0.0.0.0:2377) --max-snapshots uint Number of additional Raft snapshots to retain --snapshot-interval uint Number of log entries between Raft snapshots (default 10000) --task-history-limit int Task history retention limit (default 5) [root@iZ2vc84009csu7682v6qxoZ ~]# ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 00:16:3e:01:60:de brd ff:ff:ff:ff:ff:ff inet 172.27.19.83/20 brd 172.27.31.255 scope global dynamic eth0 valid_lft 315357477sec preferred_lft 315357477sec inet6 fe80::216:3eff:fe01:60de/64 scope link valid_lft forever preferred_lft forever 3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default link/ether 02:42:b6:ec:09:4a brd ff:ff:ff:ff:ff:ff inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0 valid_lft forever preferred_lft forever [root@iZ2vc84009csu7682v6qxoZ ~]# docker swarm init --advertise-addr 172.27.19.83 Swarm initialized: current node (7f6pz3yw48b478hpue9avtmz9) is now a manager. To add a worker to this swarm, run the following command: docker swarm join --token SWMTKN-1-10m40b4ub1k77krt753li2u43cl5gc7scvytgd5j6b2zd9xnl0-8xpwrpn9wn9fjt62ygw7bm8uj 172.27.19.83:2377 To add a manager to this swarm, run 'docker swarm join-token manager' and follow the instructions. [root@iZ2vc84009csu7682v6qxoZ ~]#
通过 docker swarm join --token SWMTKN-1-10m40b4ub1k77krt753li2u43cl5gc7scvytgd5j6b2zd9xnl0-8xpwrpn9wn9fjt62ygw7bm8uj 172.27.19.83:2377 命令可以招一个奴隶； 想招一个管理的话，执行 docker swarm join-token manager
也可以执行命令再生成令牌
# 获取令牌，让拿该令牌的人成为一个 管理 或者 奴隶 docker swarm join-token manager docker swarm join-token worker
让 docker-2 成为这个集群的工作者，在 docker-2 上操作
[root@iZ2vc84009csu7682v6qxmZ ~]# docker swarm join --token SWMTKN-1-10m40b4ub1k77krt753li2u43cl5gc7scvytgd5j6b2zd9xnl0-8xpwrpn9wn9fjt62ygw7bm8uj 172.27.19.83:2377 This node joined a swarm as a worker. [root@iZ2vc84009csu7682v6qxmZ ~]#
回到 docker-1 上，发现有了奴隶
[root@iZ2vc84009csu7682v6qxoZ ~]# docker node ls ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION o89a6golnfx4dphdxnqwlimtk iZ2vc84009csu7682v6qxmZ Ready Active 19.03.13 7f6pz3yw48b478hpue9avtmz9 * iZ2vc84009csu7682v6qxoZ Ready Active Leader 19.03.13 [root@iZ2vc84009csu7682v6qxoZ ~]#
按照上面的套路，让 docker-3 也成为一个奴隶
[root@iZ2vc84009csu7682v6qxpZ ~]# docker swarm join --token SWMTKN-1-10m40b4ub1k77krt753li2u43cl5gc7scvytgd5j6b2zd9xnl0-8xpwrpn9wn9fjt62ygw7bm8uj 172.27.19.83:2377 This node joined a swarm as a worker. [root@iZ2vc84009csu7682v6qxpZ ~]#
地主 docker-1 发现自己又多了个奴隶
[root@iZ2vc84009csu7682v6qxoZ ~]# docker node ls ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION o89a6golnfx4dphdxnqwlimtk iZ2vc84009csu7682v6qxmZ Ready Active 19.03.13 7f6pz3yw48b478hpue9avtmz9 * iZ2vc84009csu7682v6qxoZ Ready Active Leader 19.03.13 us7so7o9h5wqqs54cgiho3r02 iZ2vc84009csu7682v6qxpZ Ready Active 19.03.13 [root@iZ2vc84009csu7682v6qxoZ ~]#
再招一个管理
[root@iZ2vc84009csu7682v6qxoZ ~]# docker swarm join-token manager To add a manager to this swarm, run the following command: docker swarm join --token SWMTKN-1-10m40b4ub1k77krt753li2u43cl5gc7scvytgd5j6b2zd9xnl0-apmys0ij0kwdndqag8s49nnih 172.27.19.83:2377 [root@iZ2vc84009csu7682v6qxoZ ~]#
docker-4 加入管理队伍
[root@iZ2vc84009csu7682v6qxnZ ~]# docker swarm join --token SWMTKN-1-10m40b4ub1k77krt753li2u43cl5gc7scvytgd5j6b2zd9xnl0-apmys0ij0kwdndqag8s49nnih 172.27.19.83:2377 This node joined a swarm as a manager. [root@iZ2vc84009csu7682v6qxnZ ~]#
docker-1 地主检阅自己的庄园
[root@iZ2vc84009csu7682v6qxoZ ~]# docker node ls ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION o89a6golnfx4dphdxnqwlimtk iZ2vc84009csu7682v6qxmZ招的奴隶 Ready Active 19.03.13 xw0xcv5uep7ck1gbz342rpas8 iZ2vc84009csu7682v6qxnZ招的管理 Ready Active Reachable 19.03.13 7f6pz3yw48b478hpue9avtmz9 * iZ2vc84009csu7682v6qxoZ地主本人 Ready Active Leader 19.03.13 us7so7o9h5wqqs54cgiho3r02 iZ2vc84009csu7682v6qxpZ招的奴隶 Ready Active 19.03.13 [root@iZ2vc84009csu7682v6qxoZ ~]#
总结 swarm
# 第一步：init 一个地主 # 第二步：join 管理和奴隶 正常需要有3个主节点（管理）
Raft协议
若将地址重启，他将失去地主的地位
[root@iZ2vc84009csu7682v6qxoZ ~]# systemctl stop docker [root@iZ2vc84009csu7682v6qxoZ ~]# systemctl start docker [root@iZ2vc84009csu7682v6qxoZ ~]# docker node ls ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION o89a6golnfx4dphdxnqwlimtk iZ2vc84009csu7682v6qxmZ Ready Active 19.03.13 xw0xcv5uep7ck1gbz342rpas8 iZ2vc84009csu7682v6qxnZ Unknown Active Leader 19.03.13 7f6pz3yw48b478hpue9avtmz9 * iZ2vc84009csu7682v6qxoZ Ready Active Reachable 19.03.13 us7so7o9h5wqqs54cgiho3r02 iZ2vc84009csu7682v6qxpZ Ready Active 19.03.13 [root@iZ2vc84009csu7682v6qxoZ ~]#
某节点想要离开集群
[root@iZ2vc84009csu7682v6qxpZ ~]# docker swarm leave Node left the swarm. [root@iZ2vc84009csu7682v6qxpZ ~]#
3个管理节点，挂一个，变成2个，还可以用； 2个管理节点，挂一个，变成1个，是不可用的； 最少需要有3个管理节点，存活数>=2；
Swarm 集群弹性创建服务
swarm，service，node，task，container
[root@iZ2vc84009csu7682v6qxoZ ~]# docker service --help Usage: docker service COMMAND Manage services Commands: create Create a new service inspect Display detailed information on one or more services logs Fetch the logs of a service or task ls List services ps List the tasks of one or more services rm Remove one or more services rollback Revert changes to a service's configuration scale Scale one or multiple replicated services update Update a service Run 'docker service COMMAND --help' for more information on a command.
创建服务，动态扩展服务，动态更新服务，灰度发布（金丝雀发布）
[root@iZ2vc84009csu7682v6qxoZ ~]# docker service create -p 8888:80 --name my-nginx nginx # 跟 docker run 可想象成类似的概念 ulytx1jkslmx3tjy5asmsm2ls overall progress: 1 out of 1 tasks 1/1: running [==================================================>] verify: Service converged [root@iZ2vc84009csu7682v6qxoZ ~]# docker service ps my-nginx ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS 6iyzhc27wx5z my-nginx.1 nginx:latest iZ2vc84009csu7682v6qxnZ Running Running about a minute ago [root@iZ2vc84009csu7682v6qxoZ ~]# docker service ls ID NAME MODE REPLICAS IMAGE PORTS ulytx1jkslmx my-nginx replicated 1/1 nginx:latest *:8888->80/tcp [root@iZ2vc84009csu7682v6qxoZ ~]#
上面可以看到服务只跑在一个副本上，现在来更新副本数（虽然一共只有4个节点，但是可以起10个服务（有的机器上分配多个！））
[root@iZ2vc84009csu7682v6qxoZ ~]# docker service update --replicas 3 my-nginx my-nginx overall progress: 3 out of 3 tasks 1/3: running [==================================================>] 2/3: running [==================================================>] 3/3: running [==================================================>] verify: Service converged [root@iZ2vc84009csu7682v6qxoZ ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 9212374a3948 nginx:latest "/docker-entrypoint.鈥 41 seconds ago Up 39 seconds 80/tcp my-nginx.2.vt9c4mm18n8ydcs4ztwpbd78f [root@iZ2vc84009csu7682v6qxoZ ~]#
开启云主机8888端口
访问任一节点 http://47.108.198.237:8888/ 即访问这个集群服务，至于这个集群在每台机器上开启几个实例，是Swarm自己的事情
动态扩缩容
[root@iZ2vc84009csu7682v6qxnZ ~]# docker service scale my-nginx=5 my-nginx scaled to 5 overall progress: 5 out of 5 tasks 1/5: running [==================================================>] 2/5: running [==================================================>] 3/5: running [==================================================>] 4/5: running [==================================================>] 5/5: running [==================================================>] verify: Service converged [root@iZ2vc84009csu7682v6qxnZ ~]#
移除服务
[root@iZ2vc84009csu7682v6qxnZ ~]# docker service rm my-nginx my-nginx [root@iZ2vc84009csu7682v6qxnZ ~]# docker service ls ID NAME MODE REPLICAS IMAGE PORTS
云原生来了，完了完了，完蛋了！
k8s、Go语言(并发语言)……
击石乃有火，不击元无烟！！
