The server may already be running in another process
Several ports (8005, 8080) required by Tomcat v7.0 Server at localhost are already in use. The server may already be running in another process, or a system process may be using the port. To start this server you will need to stop the other process or change the port number(s). Can you please tell me what is the problem with Tomcat. I am running it on my Ubuntu machine.
asked Oct 7, 2015 at 6:40
Shantanu Karmakar Shantanu Karmakar
11 5 5 bronze badges
1 Answer 1
Are you using tomcat with apache or other engine? If so you would have to change apache or tomcat ports so they do not overlap.
Maybe you start tomcat on system start and then you try to run it from eclipse? Before starting eclipse try to shutdown tomcat server.
answered Oct 7, 2015 at 6:56
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Web server failed to start Port 8080 was already in use
In this post, We will try to understand the Web server failed to start Port 8080 was already in use error and how to fix it.
Why Port 8080 was already in use?
In the network, an IP address identifies each machine. Similarly, The network port identifies the application or process running on a machine. When an application wants to use a port, the OS binds one. However, when multiple applications want to use the same port, there is a port clash.
In our case, port 8080 was already being used by another application and hence the web server failed to start. Usually, you would get this error in the case of ports 8080, 8081, 9090, etc. So in general, If you get a “port 8080 was already in use” error, then it is certain that another application is already using that port.
This is most likely due to bad configuration from your end, running the application multiple times, or not using proper startup and shutdown scripts.
Fix for Web server failed to start
As we know, The cause is that another process is running on the same port. To solve this, you have two options.
- Try to run the application on a port other than 8080.
- Identify and stop the process running on that specific port
Option 1: Run your web server on a different port
Most of the application frameworks provide options to change the ports they listen to. For instance, you can change the application port of a spring boot application in the following ways.
You can provide a server.port configuration with a different port number in the application.properties file.
server.port=9090Code language: Properties (properties)You can also pass the port number as an application parameter.
java - jar my-server.jar --server.port=9090Code language: Bash (bash)Or a JVM parameter.
java - jar -Dserver.port=9090 my-server.jarCode language: Bash (bash)This way, The application starts on a different port. Thus the “Web server failed to start. Port 8080 was already in use” error is avoided.
There is a detailed post on how to change the default tomcat port number in 5 different ways. You can also find more details on how the spring boot configuration works in their official documentation.
Option 2: Kill the server running on port 8080
Sometimes, the other process is just an old instance of the same application or an application that you don’t want to run. In these cases, it is best to identify and kill them so that you can start your application on that specific port. To do that you need to first identify the process. Second, you need to kill it.
Say you got the error for running on port 8080. Then you should use the below command for identifying the process or service.
Finding and killing process running on port 8080 on Linux/Mac
One of the following commands should give the process ID (PID) of the application or service running on port 8080.
sudo lsof -n -i :8080 | grep LISTEN sudo netstat -nlp | grep :8080 sudo ss -lptn 'sport = :8080'Code language: Bash (bash)
With the PID from the above output, you can kill the process using the following commands.
#to kill process gracefully kill -15 25321Code language: Bash (bash)#To force kill a process kill -9 25321Code language: Bash (bash)By killing the process occupying the port on 8080, the web server can start without any problems.
For your use, replace the process id with the process id that you found on your machine.
Finding and killing process running on port 8080 on windows
Similarly, You can run the following command to identify a process running on a port in windows.
netstat -ona | findstr :8080 | findstr LISTENINGCode language: Bash (bash)
Once you get hold of the process id, you can use the following command to kill it.
taskkill /PID 25321 /F Code language: Bash (bash)As I said earlier, for your machine, the process ID may be different. The /F is there to force kill the process. In most cases, you will not require this flag.
Conclusion
So we learned ports work and how to solve “Port 8080 was already in use” errors on application startup. If you liked this article, then you might like to read about the following titles.
- Shell Scripts to start and Stop Spring Boot Applications.
- Spring Boot Hazelcast Cache
- Spring Boot Linux Service Guide
- Handling Enums in Thymeleaf templates
- Command Line Runner with Spring Boot
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Server start failed the server may already be running
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License server service not starting
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10-31-2018 03:46 PM
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We’ve got the FlexNet software loaded on a server providing licenses for an array of applications including Quartus. Using LMTools, I can’t start the service or read the file directly. However, going to the command line and starting LMGRD manually, pointing to the license file, everything starts, users are getting licenses, going back into LMTools after starting I can read the file and diagnostics show it as up and online.
If the server is rebooted, the Quartus file stops being available until someone goes in and manually restarts it. Any thoughts on how to correct this?
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11-01-2018 08:00 AM
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Could you kindly, re-confirm again the license setup process. You need to specify new location of the license file using the LM_LICENSE_FILE system variable. You need to set your LM_LICENSE_FILE environment variable to point to the license that Intel provide. c:\intel\license.dat or something similar.
2nd could you also ensure the port number. The port number is required for Windows systems and it should be outside of the 27000-28000 range and be unique on the machine. For example, 1800.
Please stop and restart the server after assigning port number. You need to allow the firewall access to the port number from both server and client machine. refer this to your license server admin
You can refer to link on how to set environment variable.
You can also refer to the link below on Starting and Stopping the License Server
Refer this following youtube for license setup.
Hope this helps.
11-01-2018 04:37 PM
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I’ve set the INTEL_LICENSE_FILE variable to point to the folder containing the file, as indicated by the link provided.
The port is set to 1800 in the license file.
The path for alterad and mgcld in the license file have been confirmed.
LMTools -> Config Services, I’ve confirmed the path to lmgrd points to the same one I use from the command line, the path to the license file is correct.
After starting lmgrd from the command line, LMTools server status shows all licenses available, and my users are able to use them.
Using LMTools, «Start server» throws an error: Server Start Failed. The Server May Already Be Running!» Using «Stop server», I get «Unable to Stop Server». «Reread license file» = «Reread server failed». From the command prompt, I can run the «lmgrd -c license.lic», and status inquiry from LMTools shows everything running like a champ. I just can’t start/stop from LMTools, and if the server reboots for any reason, that license is unavailable until someone logs in and starts the altera license manually.
In the process of things this morning, I noticed:
After setting the environment variable, «List all vendor paths» showed the path entered in the variable, ending with *.lic. The downloaded file from Intel is .dat. After renaming the file to *.lic, «LIst all vendor paths» showed the full path including the filename, not just the folder.
An instance of the server may already be running error occurs when installing Rational Team products
Attempts to install or upgrade IBM Rational ClearQuest, ClearCase or RequisitePro web server components fail with an error indicating that a server process may already be running.
Symptom
Here is an example of the full error message:
Error during "pre-install configure" phase:
Exit status 2 from command:
"D:\Program Files (x86)\IBM\RationalSDLC\common\CM\profiles\cmprofile\bin\startServer.bat" server1
ADMU0116I: Tool information is being logged in file D:\Program Files (x86)\IBM\RationalSDLC\common\CM\profiles\cmprofile\logs\server1\startServer.log
ADMU3027E: An instance of the server may already be running: server1
Cause
Insufficient RAM based on product requirements results in the failed startup or shutdown of web server processes that must be started and stopped numerous times during the installation.
For example, ClearQuest 7.1.2 requires 4-8GB of RAM for the ClearQuest Web on CM Server. When upgrading this error occurs. In this example, the problem occurs because the installation is on a virtual machine image that reduced to 1GB of RAM from an original 8GB.
Resolving The Problem
- Ensure these processes are not running in Windows Task Manager, looking for processes from all users:
- ccrpc.exe
- cqrpc.exe
- wasservice.exe
- java.exe
- Make sure these services are stopped in the Windows Services console:
- IBM HTTP Server
- IBM WebSphere Application Server
- Atria Location Broker (ALBD). Also shows as albd.exe in task manager
- Verify that you have sufficient RAM based on the product requirements for the features you plan to use prior to installation.
- Verify that anti-virus and firewall software is disabled.
If you continue to encounter this error, attempt the installation again with debug mode. You can find more information on debug mode in technote 1358628. Collect and zip the logs located in this directory (by default) to send to IBM Rational Support under your PMR:
C:\Documents and Settings\All Users\Application Data\IBM\Installation Manager