what is role of cfinger in below output of lsof -i – A server stack is the collection of software that forms the operational infrastructure on a given machine. In a computing context, a stack is an ordered pile. A server stack is one type of solution stack — an ordered selection of software that makes it possible to complete a particular task. Like in this post about what is role of cfinger in below output of lsof -i was one problem in server stack that need for a solution. Below are some tips in manage your linux server when you find problem about linux, ubuntu, lsof, , .
I would like to understand the output of lsof -i, come with below response
below, it looks like mystance is making outbond connection with 192.168.200.21 however on port section it says cfinger .i.e. 192.168.201.22:cfinger
what is cfinger here ?
commad PID USER FD TYPE Device SIZE/OFF NODE NAME
java 13376 jmxtrans 28u IPv4 58123807 0t0 TCP myinstance:339976->192.168.201.22:cfinger (SYN_SENT)
java 13376 jmxtrans 29U IPv4 58125689 0t0 TCP myinstance:339977->192.168.201.22:cfinger (SYN_SENT)
If you run lsof -P it will return port number and not the service as defined in /etc/services.
So Java is running on whatever port cfinger is defined as in /etc/services. You could also just run grep cfinger /etc/services to find out what port it is as well.
