如何配置Jenkins在Centos 7上的端口80上运行

Question

我在Centos 7上安装了基于Jetty服务器的Jenkins。在配置文件中：/ etc / sysconfig / jenkins默认端口是8080，一切都运行正常，但我需要在80端口上移动jenkins。

当我将JENKINS_PORT =“8080”更改为JENKINS_PORT =“80”时 - jenkins不再可用。防火墙我关掉了。

在日志消息中：/var/log/jenkins/jenkins.log

Aug 17, 2017 12:07:45 PM org.eclipse.jetty.util.log.JavaUtilLog warn
WARNING: FAILED ServerConnector@4082ba93{HTTP/1.1}{0.0.0.0:80}: java.net.SocketException: Permission denied
java.net.SocketException: Permission denied
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:433)
at sun.nio.ch.Net.bind(Net.java:425)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:321)
at org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:80)
at org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:236)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.server.Server.doStart(Server.java:366)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at winstone.Launcher.<init>(Launcher.java:152)
at winstone.Launcher.main(Launcher.java:352)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at Main._main(Main.java:293)
at Main.main(Main.java:132)    

任何人都可以帮我解决这个问题吗？

Answer 1

谷歌带我去https://confluence.atlassian.com/confkb/permission-denied-error-when-binding-a-port-290750651.html

1024以下的端口称为特权端口，在Linux（以及大多数UNIX风格和类UNIX系统）中，任何非root用户都不允许它们打开。

因此，当我以JENKINS_USER =“jenkins”运行启动脚本时，出现了Permission denied错误。

Answer 2

我在这个问题上挣扎了好几个小时。我最终解决它的问题是，在Ubuntu上，我将JENKINS_USER变量值从$ NAME更改为/etc/default/jenkins中的root。然后，我通过运行以下命令来执行守护程序重新加载。

$ systemctl daemon-reload

最后，我以root身份重新启动了jenkins。

$ service jenkins restart

Answer 3

@Nimda回答了https://stackoverflow.com/a/45754065/3471694 我在下面遇到了同样的问题

SEVERE: Container startup failed
java.io.IOException: Failed to start Jetty
        at winstone.Launcher.<init>(Launcher.java:186)
        at winstone.Launcher.main(Launcher.java:354)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at Main._main(Main.java:344)
        at Main.main(Main.java:160)
Caused by: java.net.SocketException: Permission denied
        at sun.nio.ch.Net.bind0(Native Method)
        at sun.nio.ch.Net.bind(Net.java:433)
        at sun.nio.ch.Net.bind(Net.java:425)
        at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
        at org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:339)
        at org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:307)
        at org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:80)
        at org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:235)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
        at org.eclipse.jetty.server.Server.doStart(Server.java:395)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
        at winstone.Launcher.<init>(Launcher.java:184)
        ... 7 more

解决方案：编辑文件/ etc / sysconfig / jenkins或任何jenkins的配置文件 - 将#JENKINS_USER =“jenkins”更改为可以root身份运行的任何用户 示例：JENKINS_USER =“root” 希望这有帮助

Answer 4

你能试试这个Centos7防火墙设置吗？

不需要关闭防火墙。

firewall-cmd --zone=public --add-port=80/tcp --permanent
firewall-cmd --zone=public --add-service=http --permanent
firewall-cmd --reload
firewall-cmd --list-all

然后开始詹金斯。