本文详细介绍了如何在CentOS 7.2系统中安装Docker，包括配置安装包、设置镜像源、创建及管理镜像和容器。接着，文章阐述了Springboot应用的Dockerfile编写、pom文件配置以及如何部署和管理Springboot应用的Docker容器，包括查看容器状态、日志和容器的生命周期管理。
目录
环境CentOS 7.2
安装
配置安装包
yum install -y yum-utils device-mapper-persistent-data lvm2设置镜像源
yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo查看所有stable版本
yum list docker-ce --showduplicates | sort -r
[root@jiba02 ~]# yum list docker-ce --showduplicates | sort -r
* updates: mirrors.cqu.edu.cn
Loading mirror speeds from cached hostfile
Loaded plugins: fastestmirror
* extras: mirrors.163.com
docker-ce.x86_64 3:19.03.3-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.2-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.1-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.0-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.9-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.8-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.7-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.6-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.5-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.4-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.3-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.2-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.1-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.0-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.3.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.2.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.1.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.0.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.03.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 18.03.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.12.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.12.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.09.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.09.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.2.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.3.ce-1.el7 docker-ce-stable
docker-ce.x86_64 17.03.2.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.0.ce-1.el7.centos docker-ce-stable
* base: mirrors.cqu.edu.cn
Available Packages
安装
此处直接安装最新，或者指定版本安装
yum install docker-ce #默认最新
yum install docker-ce-19.03.3-3.el7 #安装指定版本启动
systemctl start docker查看运行状态
systemctl status docker部署应用程序
Springboot配置
编写Dockerfile
FROM java:8
VOLUME /tmp
ADD csdnranks-1.0.jar csdnranks.jar
EXPOSE 18200
ENTRYPOINT ["java","-jar","/csdnranks.jar"]配置pom文件
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>com.spotify</groupId>
<artifactId>docker-maven-plugin</artifactId>
<version>1.2.1</version>
<configuration>
<imageName>${docker.image.prefix}/${project.artifactId}</imageName>
<dockerDirectory>src/main/docker</dockerDirectory>
<resources>
<resource>
<targetPath>/</targetPath>
<directory>${project.build.directory}</directory>
<include>${project.build.finalName}.jar</include>
</resource>
</resources>
</configuration>
</plugin>
</plugins>
</build>
服务器配置
jar配置
把编译好的jar包和dockerfile放在服务器的同一个目录下，如/home/files/
创建镜像
在目录种执行命令创建镜像
docker build -t csdn:1.0 . #这个.代表当前目录,不能忽略运行容器
把创建的镜像实例化到容器中，运行起来
可以配置不同的option，此处使用简单的命令
# -d 后台运行
#csdn:1.0运行指定镜像名字和版本
#-p 8889主机端口号 映射 18200容器内应用端口号
#--name给运行的容器起个名字
#等等
docker run -d csdn:1.0 -p 8889:18200 --name=wdnmd查看状态
容器运行状态
[root@jiba01 files]# docker container stats
CONTAINER ID NAME CPU % MEM USAGE / LIMIT MEM % NET I/O BLOCK I/O PIDS
be7072b9840e wdnmd 0.06% 96.1MiB / 3.686GiB 2.55% 2.78kB / 704B 4.09MB / 0B 11
查看镜像
[root@jiba01 files]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
csdn 2.0 d963a22b25e6 30 minutes ago 675MB
csdn 1.0 fb4dcb6f38c9 2 hours ago 675MB
java 8 d23bdf5b1b1b 2 years ago 643MB
停止容器运行
[root@jiba01 files]# docker stop wdnmd
wdnmd
查看所有的容器
(停止的正在运行的)
[root@jiba01 files]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c602fff078e6 csdn:1.0 "java -jar /csdnrank…" 3 seconds ago Up 2 seconds 0.0.0.0:8889->18200/tcp wdnmd2
be7072b9840e csdn:1.0 "java -jar /csdnrank…" 2 minutes ago Exited (143) About a minute ago wdnmd
31be14c31c39 csdn:2.0 "java -jar /csdnrank…" 24 minutes ago Exited (143) 3 minutes ago great_mcnulty
d768426900f7 csdn:2.0 "java -jar /csdnrank…" 32 minutes ago Exited (143) 30 minutes ago wdnmw2
查看容器内应用日志
真正应用中可以通过docker安装elk组件进行微服务日志收集，此处是最简单查看容器的日志
[root@jiba01 files]# docker logs wdnmd
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.1.7.RELEASE)
2019-10-18 00:36:24.016 INFO 1 --- [ main] com.zzj.csdnranks.CsdnranksApplication : Starting CsdnranksApplication v1.0 on b9c050c5354d with PID 1 (/csdnranks.jar started by root in /)
2019-10-18 00:36:24.019 INFO 1 --- [ main] com.zzj.csdnranks.CsdnranksApplication : No active profile set, falling back to default profiles: default
2019-10-18 00:36:24.932 INFO 1 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode.
2019-10-18 00:36:25.064 INFO 1 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 108ms. Found 1 repository interfaces.
2019-10-18 00:36:25.615 INFO 1 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'JPAConfiguration' of type [com.zzj.csdnranks.config.JPAConfiguration$$EnhancerBySpringCGLIB$$d5aa1b96] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-10-18 00:36:26.301 INFO 1 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2019-10-18 00:36:27.595 INFO 1 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2019-10-18 00:36:27.692 INFO 1 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [
name: default
...]
2019-10-18 00:36:27.828 INFO 1 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {5.3.10.Final}
2019-10-18 00:36:27.829 INFO 1 --- [ main] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2019-10-18 00:36:28.158 INFO 1 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.4.Final}
2019-10-18 00:36:28.636 INFO 1 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect
2019-10-18 00:36:29.636 INFO 1 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2019-10-18 00:36:31.393 INFO 1 --- [ main] org.quartz.impl.StdSchedulerFactory : Using default implementation for ThreadExecutor
2019-10-18 00:36:31.430 INFO 1 --- [ main] org.quartz.core.SchedulerSignalerImpl : Initialized Scheduler Signaller of type: class org.quartz.core.SchedulerSignalerImpl
2019-10-18 00:36:31.430 INFO 1 --- [ main] org.quartz.core.QuartzScheduler : Quartz Scheduler v.2.3.1 created.
2019-10-18 00:36:31.431 INFO 1 --- [ main] org.quartz.simpl.RAMJobStore : RAMJobStore initialized.
2019-10-18 00:36:31.432 INFO 1 --- [ main] org.quartz.core.QuartzScheduler : Scheduler meta-data: Quartz Scheduler (v2.3.1) 'quartzScheduler' with instanceId 'NON_CLUSTERED'
Scheduler class: 'org.quartz.core.QuartzScheduler' - running locally.
NOT STARTED.
Currently in standby mode.
Number of jobs executed: 0
Using thread pool 'org.quartz.simpl.SimpleThreadPool' - with 10 threads.
Using job-store 'org.quartz.simpl.RAMJobStore' - which does not support persistence. and is not clustered.
2019-10-18 00:36:31.432 INFO 1 --- [ main] org.quartz.impl.StdSchedulerFactory : Quartz scheduler 'quartzScheduler' initialized from an externally provided properties instance.
2019-10-18 00:36:31.432 INFO 1 --- [ main] org.quartz.impl.StdSchedulerFactory : Quartz scheduler version: 2.3.1
2019-10-18 00:36:31.432 INFO 1 --- [ main] org.quartz.core.QuartzScheduler : JobFactory set to: org.springframework.scheduling.quartz.SpringBeanJobFactory@3576ddc2
2019-10-18 00:36:31.520 INFO 1 --- [ main] o.s.s.quartz.SchedulerFactoryBean : Starting Quartz Scheduler now
2019-10-18 00:36:31.522 INFO 1 --- [ main] org.quartz.core.QuartzScheduler : Scheduler quartzScheduler_$_NON_CLUSTERED started.
2019-10-18 00:36:31.534 INFO 1 --- [ main] com.zzj.csdnranks.CsdnranksApplication : Started CsdnranksApplication in 8.55 seconds (JVM running for 9.373)
删除容器
如果正在运行，需要先执行stop命令停止容器运行后，再进行删除
[root@jiba01 files]# docker rm wdnmd
wdnmd
[root@jiba01 files]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c602fff078e6 csdn:1.0 "java -jar /csdnrank…" 39 seconds ago Up 38 seconds 0.0.0.0:8889->18200/tcp wdnmd2
31be14c31c39 csdn:2.0 "java -jar /csdnrank…" 25 minutes ago Exited (143) 3 minutes ago great_mcnulty
d768426900f7 csdn:2.0 "java -jar /csdnrank…" 32 minutes ago Exited (143) 31 minutes ago wdnmw2
删除镜像
[root@jiba01 files]# docker images #删除前
REPOSITORY TAG IMAGE ID CREATED SIZE
csdn 2.0 d963a22b25e6 34 minutes ago 675MB
csdn 1.0 fb4dcb6f38c9 2 hours ago 675MB
java 8 d23bdf5b1b1b 2 years ago 643MB
[root@jiba01 files]# docker rmi d963a22b25e6 #根据IMAGE ID，删除指定镜像
Untagged: csdn:2.0
Deleted: sha256:d963a22b25e61e764d65ab8507237f4a1bb8614a1a4f130ac7f31c1f48b9d8ee
Deleted: sha256:575f03d19cfc8dcd1abd9e59bcdcf3a8ee0930dfd43725a73c36ed2cad8e1e03
Deleted: sha256:11e4c45277da5e70ecfabd1a82fcc64e39d92567566b645e3112395ea3b423b9
Deleted: sha256:f6a1d8e4990c0a58f713e09e28e506214c026ebae34d7d825ee4f7448dcf4478
[root@jiba01 files]# docker images #删除后
REPOSITORY TAG IMAGE ID CREATED SIZE
csdn 1.0 fb4dcb6f38c9 2 hours ago 675MB
java 8 d23bdf5b1b1b 2 years ago 643MB
待续...docker-compose
参考
https://www.cnblogs.com/yfalcon/p/9044246.html
https://www.cnblogs.com/yufeng218/p/8370670.html
http://www.ruanyifeng.com/blog/2018/02/docker-tutorial.html
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