jenkins端口报错

java.io.IOException: Failed to start Jetty
	at winstone.Launcher.<init>(Launcher.java:209)
	at winstone.Launcher.main(Launcher.java:496)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at executable.Main.main(Main.java:351)
Caused by: java.io.IOException: Failed to bind to 0.0.0.0/0.0.0.0:8080
	at org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:344)
	at org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:304)
	at org.eclipse.jetty.server.Server.lambda$doStart$0(Server.java:402)

更换端口运行启动jenkins

./jenkins start --httpPort=8088

还是出现报错

WARNING	hudson.model.UpdateCenter#updateDefaultSite: Upgrading 

解决方法

1.查询宿主主机防火墙NAT转发情况：firewall-cmd --query-masquerade

2.开启NAT转发： firewall-cmd --zone=public --add-masquerade --permanent

3.重启防火墙： firewall-cmd --reload

如果使用命令出现 FirewallD is not running 问题 ：
1.查看firewalld状态:systemctl status firewalld，如果是dead状态，即防火墙未开启。

2.开启防火墙：systemctl start firewalld

3.确认firewalld状态:systemctl status firewalld
（根据需求是否关闭防火墙）关闭防火墙：systemctl stop firewalld

再次启动

./jenkins start --httpPort=8088

输入IP及端口可正常启动jenkins