Docker 1 12新功能探索(5) 创建服务

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通过docker service create创建服务,使用docker service ls确认服务信息,docker service ps确认详细运行状况,更是在create的时候提供了众多的Option,这些Option在其他流行的编排工具中稍作比较,大多大同小异,使用方便。

docker service create

Usage: docker service create [OPTIONS] IMAGE [COMMAND] [ARG…]

Options

short option usage explain default setting
  –constraint value Placement constraints (default [])
  –container-label value Container labels (default [])
  –endpoint-mode string Endpoint mode (vip or dnsrr)  
-e –env value Set environment variables (default [])
  –help Print usage  
-l –label value Service labels (default [])
  –limit-cpu value Limit CPUs (default 0.000)
  –limit-memory value Limit Memory (default 0 B)
  –log-driver string Logging driver for service  
  –log-opt value Logging driver options (default [])
  –mode string Service mode (replicated or global) (default “replicated”)
  –mount value Attach a mount to the service  
  –name string Service name  
  –network value Network attachments (default [])  
-p –publish value Publish a port as a node port (default [])
  –replicas value Number of tasks (default none)
  –reserve-cpu value Reserve CPUs (default 0.000)
  –reserve-memory value Reserve Memory (default 0 B)
  –restart-condition string Restart when condition is met (none, on-failure, or any)  
  –restart-delay value Delay between restart attempts (default none)
  –restart-max-attempts value Maximum number of restarts before giving up (default none)
  –restart-window value Window used to evaluate the restart policy (default none)
  –stop-grace-period value Time to wait before force killing a container (default none)
  –update-delay duration Delay between updates  
  –update-failure-action string Action on update failure (pause continue)
  –update-parallelism uint Maximum number of tasks updated simultaneously (0 to update all at once) (default 1)
-u –user string Username or UID  
  –with-registry-auth Send registry authentication details to swarm agents  
-w –workdir string Working directory inside the container  

事前确认

事前确认:没有运行中的service

[root@host31 ~]# docker service ls
ID  NAME  REPLICAS  IMAGE  COMMAND
[root@host31 ~]#
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创建Service

创建一个sonarqube的service,创建4个副本,公开port 9000以用于外部访问

[root@host31 ~]# docker service create --name sonar_service --replicas 4 -p 9000:9000/tcp sonarqube
48rkq87ktq38q6v0sjr9cu3of
[root@host31 ~]#
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确认结果

确认生成了4个副本的sonar_service都已经正常启动

[root@host31 ~]# docker service ls
ID            NAME           REPLICAS  IMAGE      COMMAND
48rkq87ktq38  sonar_service  4/4       sonarqube
[root@host31 ~]#
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确认启动的4个副本以怎样的分布启动在哪个node上

[root@host31 ~]# docker service ps sonar_service
ID                         NAME             IMAGE      NODE    DESIRED STATE  CURRENT STATE                   ERROR
c0vp4yrr751j1nrblkpw9wek5  sonar_service.1  sonarqube  host33  Running        Running less than a second ago
aypn2tn8lj2k1xzttnc3k84at  sonar_service.2  sonarqube  host34  Running        Running less than a second ago
04seclvx14qrvfemol21y05px  sonar_service.3  sonarqube  host34  Running        Running less than a second ago
9y6x1uvj289f1flx08nl0mkws  sonar_service.4  sonarqube  host31  Running        Running 3 minutes ago
[root@host31 ~]#
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sonarqube的web画面确认

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转载自www.cnblogs.com/firsttry/p/10172920.html
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