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

shortoption usageexplaindefault setting–constraint valuePlacement constraints(default [])–container-label valueContainer labels(default [])–endpoint-mode stringEndpoint mode (vip or dnsrr)-e–env valueSet environment variables(default [])–helpPrint usage-l–label valueService labels(default [])–limit-cpu valueLimit CPUs(default 0.000)–limit-memory valueLimit Memory(default 0 B)–log-driver stringLogging driver for service–log-opt valueLogging driver options(default [])–mode stringService mode (replicated or global)(default “replicated”)–mount valueAttach a mount to the service–name stringService name–network valueNetwork attachments (default [])-p–publish valuePublish a port as a node port(default [])–replicas valueNumber of tasks(default none)–reserve-cpu valueReserve CPUs(default 0.000)–reserve-memory valueReserve Memory(default 0 B)–restart-condition stringRestart when condition is met (none, on-failure, or any)–restart-delay valueDelay between restart attempts(default none)–restart-max-attempts valueMaximum number of restarts before giving up(default none)–restart-window valueWindow used to evaluate the restart policy(default none)–stop-grace-period valueTime to wait before force killing a container(default none)–update-delay durationDelay between updates–update-failure-action stringAction on update failure (pausecontinue)–update-parallelism uintMaximum number of tasks updated simultaneously (0 to update all at once)(default 1)-u–user stringUsername or UID–with-registry-authSend registry authentication details to swarm agents-w–workdir stringWorking 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 ~]#

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 ~]#

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 ~]#

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 ~]#

sonarqube的web画面确认

淼叔 认证博客专家 神经网络 TensorFlow NLP 资深架构师，PMP、OCP、CSM、HPE University讲师，EXIN DevOps Professional与DevOps Master认证讲师，曾担任HPE GD China DevOps & Agile Leader，帮助企业级客户提供DevOps咨询培训以及实施指导。熟悉通信和金融领域，有超过十年金融外汇行业的架构设计、开发、维护经验，在十几年的IT从业生涯中拥有了软件开发设计领域接近全生命周期的经验和知识积累，著有企业级DevOps技术与工具实战。