泊坞窗Tomcat的运行

Question

后退出0我从Dockerfile制成的图像：

FROM tomcat:8.0 
COPY target/javahello.war /usr/local/tomcat/webapps/ 
EXPOSE 8080 
CMD /usr/local/tomcat/bin/startup.sh 

但刚开始之后 - 这是在 “退出”：

$ sudo docker run -ti 957a86defe4f 
Using CATALINA_BASE: /usr/local/tomcat 
Using CATALINA_HOME: /usr/local/tomcat 
Using CATALINA_TMPDIR: /usr/local/tomcat/temp 
Using JRE_HOME:  /usr/lib/jvm/java-7-openjdk-amd64/jre 
Using CLASSPATH:  /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar 
Tomcat started. 

和：

$ sudo docker ps -a | head 
CONTAINER ID  IMAGE                  COMMAND    CREATED    STATUS      PORTS      NAMES 
dc2309620baf  957a86defe4f:latest              "/bin/sh -c /usr/loc 25 seconds ago  Exited (0) 24 seconds ago        insane_elion  

logs什么都不显示：

$ sudo docker logs dc2309620baf 
Using CATALINA_BASE: /usr/local/tomcat 
Using CATALINA_HOME: /usr/local/tomcat 
Using CATALINA_TMPDIR: /usr/local/tomcat/temp 
Using JRE_HOME:  /usr/lib/jvm/java-7-openjdk-amd64/jre 
Using CLASSPATH:  /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar 
Tomcat started. 

如果我从容器中运行startup.sh直接 - Tomcat的按预期工作：

$ sudo docker run -ti 957a86defe4f bash 
root@b00b541e6ccb:/usr/local/tomcat# ./bin/startup.sh 
Using CATALINA_BASE: /usr/local/tomcat 
Using CATALINA_HOME: /usr/local/tomcat 
Using CATALINA_TMPDIR: /usr/local/tomcat/temp 
Using JRE_HOME:  /usr/lib/jvm/java-7-openjdk-amd64/jre 
Using CLASSPATH:  /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar 
Tomcat started. 
# ps -axu | grep tomcat 
root  15 44.7 1.1 6258648 193484 ?  Sl 14:54 0:04 /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java -Djava.util.logging.config.file=/usr/local/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -Djava.endorsed.dirs=/usr/local/tomcat/endorsed -classpath /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/usr/local/tomcat -Dcatalina.home=/usr/local/tomcat -Djava.io.tmpdir=/usr/local/tomcat/temp org.apache.catalina.startup.Bootstrap start 

是不是有毛病我CMD？

Answer 1

与startup.sh的tomcat将在后台启动tomcat（作为服务），并且docker将以code 0退出，这是正常和预期的行为。

在这种情况下，您需要启动tomcat作为前台进程catalina.sh run。

FROM tomcat:8.0 
COPY target/javahello.war /usr/local/tomcat/webapps/ 
EXPOSE 8080 
CMD /usr/local/tomcat/bin/catalina.sh run 

当您运行startup.sh内部容器，它正在因为你在“bash”（你的前台进程）。