docker-compose安装skywalking

先下载docker-compose

[root@test wgr]# curl -L https://github.com/docker/compose/releases/download/1.24.1/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   638  100   638    0     0    610      0  0:00:01  0:00:01 --:--:--   611
100 15.4M  100 15.4M    0     0  2445k      0  0:00:06  0:00:06 --:--:-- 3643k
[root@test wgr]# chmod +x /usr/local/bin/docker-compose
[root@test wgr]# docker-compose

因为我本地已经有一套skywalking,便要修改一下端口：

version: '3.3'
services:
  elasticsearch:
    image: docker.elastic.co/elasticsearch/elasticsearch:6.8.5
    container_name: elasticsearch2
    restart: always
    ports:
      - 9201:9201
      - 9301:9301
    environment:
      discovery.type: single-node
    ulimits:
      memlock:
        soft: -1
        hard: -1
  oap:
    image: skywalking/oap
    container_name: oap
    depends_on:
      - elasticsearch
    links:
      - elasticsearch
    restart: always
    ports:
      - 11801:11800
      - 12801:12800
    environment:
      SW_STORAGE: elasticsearch
      SW_STORAGE_ES_CLUSTER_NODES: elasticsearch2:9201
  ui:
    image: skywalking/ui
    container_name: ui
    depends_on:
      - oap
    links:
      - oap
    restart: always
    ports:
      - 9090:8080
    environment:
      SW_OAP_ADDRESS: oap:12801

常用&重要命令

• images
  指定为镜像名称或镜像 ID。如果镜像在本地不存在，Compose 将会尝试拉取这个镜像。

image: apache/skywalking-oap-server:6.5.0
image: apache/skywalking-ui:6.5.0

• ports
  暴露端口信息。
  使用宿主端口：容器端口 (HOST:CONTAINER) 格式，或者仅仅指定容器的端口（宿主将会随机选择端口）都可以，端口字符串都使用引号包括起来的字符串格式。

ports: 
    - "3000" 
    - "8080:8080" 
    - "127.0.0.1:8001:8001"

• volumes
  数据卷所挂载路径设置。可以设置为宿主机路径(HOST:CONTAINER)或者数据卷名称(VOLUME:CONTAINER)，并且可以设置访问模式 （HOST:CONTAINER:ro）。

volumes:
      - /app/skywalking/elasticsearch/data:/usr/share/elasticsearch/data:rw
      - conf/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml
123
version: "3"
services:
  my_src:
    image: mysql:8.0
    volumes:
      - mysql_data:/var/lib/mysql
volumes:
  mysql_data:

• ulimits
  指定容器的 ulimits 限制值。
  例如，指定最大进程数为 65535，指定文件句柄数为 20000（软限制，应用可以随时修改，不能超过硬限制） 和 40000（系统硬限制，只能 root 用户提高）。

ulimits:
   nproc: 65535
   nofile:
     soft: 20000
     hard: 40000

• depends_on
  解决容器的依赖、启动先后的问题。以下例子中会先启动 redis mysql 再启动 web

version: '3'
services:
  web:
    build: .
    depends_on:
      - db
      - redis	  
  redis:
    image: redis	
  db:
    image: mysql

• environment
  设置环境变量。你可以使用数组或字典两种格式。

environment:
      SW_STORAGE: elasticsearch
      SW_STORAGE_ES_CLUSTER_NODES: elasticsearch:9200
      
environment:
      - SW_STORAGE= elasticsearch
      - SW_STORAGE_ES_CLUSTER_NODES=elasticsearch:9200

• restart
  指定容器退出后的重启策略为始终重启。该命令对保持服务始终运行十分有效，在生产环境中推荐配置为 always 或者 unless-stopped。
  restart: always

[root@test wgr]# docker-compose  up -d
Creating elasticsearch2 ... done
Creating oap            ... done
Creating ui             ... done
[root@test wgr]# docker-compose ps
     Name                   Command               State                                 Ports
----------------------------------------------------------------------------------------------------------------------------
elasticsearch2   /usr/local/bin/docker-entr ...   Up      9200/tcp, 0.0.0.0:9201->9201/tcp, 9300/tcp, 0.0.0.0:9301->9301/tcp
oap              sh docker-entrypoint.sh          Up      0.0.0.0:11801->11800/tcp, 0.0.0.0:12801->12800/tcp
ui               sh docker-entrypoint.sh          Up      0.0.0.0:9090->8080/tcp
[root@test wgr]# netstat -nltp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1056/sshd
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1250/master
tcp6       0      0 :::18080                :::*                    LISTEN      2011/java
tcp6       0      0 :::12800                :::*                    LISTEN      1992/java
tcp6       0      0 :::12801                :::*                    LISTEN      3053/docker-proxy
tcp6       0      0 :::9090                 :::*                    LISTEN      3204/docker-proxy
tcp6       0      0 :::9200                 :::*                    LISTEN      1809/docker-proxy
tcp6       0      0 :::9201                 :::*                    LISTEN      2939/docker-proxy
tcp6       0      0 :::9300                 :::*                    LISTEN      1796/docker-proxy
tcp6       0      0 :::9301                 :::*                    LISTEN      2925/docker-proxy
tcp6       0      0 :::22                   :::*                    LISTEN      1056/sshd
tcp6       0      0 :::11800                :::*                    LISTEN      1992/java
tcp6       0      0 :::11801                :::*                    LISTEN      3069/docker-proxy
tcp6       0      0 ::1:25                  :::*                    LISTEN      1250/master