我有一个Debian11VPS服务器,安装了ufw,运行了一些规则,而另一些则不起作用,我尝试过重置、禁用、重新加载甚至卸载,但都是徒劳的。这是我详细的状态
Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing), disabled (routed)
New profiles: skip
To Action From
-- ------ ----
22/tcp (OpenSSH)
我们正在运行WildFly 11 (最终),在报告系统速度缓慢后,我们发现许多端口(示例列表如下)正在打开。
有没有人知道为什么会有这么多的港口开放?另外,打开过多的端口会不会导致系统速度变慢?
Proto Local Address Foreign Address State PID
TCP 127.0.0.1:49390 127.0.0.1:49387 ESTABLISHED 7796 [java.exe]
TCP 127.0.0.1:49402 127.0.0.1:49403 ESTABLISHED 7796 [java.exe]
TCP 1
我知道Tomcat使用端口8080、8009和8005。但最近我使用netstat查看Tomcat正在使用的端口,并注意到Tomcat服务的PID侦听多个端口,它看起来如下( 2281 PID属于Tomcat服务)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp6 0 0 :::41020 :::* LISTEN 2281/java
我有以下来自netstat的搜索结果:
netstat -nap | grep java | grep :::300*
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
tcp6 0 0 :::30008 :::* LISTEN 81159/java
tcp6 0
当类型为start-dfs.sh时,我设置了一个具有两个节点hadoop01(master- 10.0.0.151)和hadoop02(从- 10.0.0.152)的hadoop集群,然后访问网站my_ip(上面仅10.0.0.151 ):50070。成功了。
But when i type start-yarn.sh then visit website my\_ip:8088. It's failed.
我的纱线-site.xml:
<configuration>
<property>
<name>yarn.nodemanager.au
我正在学习hadoop,我自己也在学习u=installed hadoop
所以我在配置时在core-site.xml文件中设置了127.0.0.1:54310/。
但是当我打开这个127.0.0.1:54310/.它显示了下面的引用
"It looks like you are making an HTTP request to a Hadoop IPC port. This is not the correct port for the web interface on this daemon."
在这里,端口运行
tcp 0 0 0.0.0.0:5
当我尝试启动JBoss时,我得到以下错误
10:10:43,298 INFO [WebService] Using RMI server codebase: http://127.0.0.1:8083/
10:10:43,938 ERROR [AbstractKernelController] Error installing to Start: name=jboss:service=Naming state=Create mode=Manual requiredState=Installed
java.rmi.server.ExportException: Port already in