i am facing the issue in webshpere ..the server is not staringReading configuration for server: server1
ADMU3028I: Conflict detected on port 8896. Likely causes: a) An instance of
the server server1 is already running b) some other process is
using port 8896
ADMU3027E: An instance of the server may already be running: server1
ADMU0111E: Program exiting with error:
com.ibm.websphere.management.exception.AdminException: ADMU3027E: An
instance of the server may already be running: server1
The error seems quite explicit: another program is using port 8896.
To verify this you can use these commands:
(Linux) sudo netstat -lptu|grep 8896
(Windows) netstat -a -b (or other tools)
You can decide to stop the process that create the conflict or change the ports used by WAS:
Updating ports in existing profile
This can be caused when the services don't shut down correctly and the java.exe processes hold a lock on the applications port. (8896).
To resolve this problem you can use one of the following options.
1) Open your taskmanager and end task the java.exe process for your JVM that is holding a lock on the servers port then restart the JVM from the WebSphere console
2) You can restart the physical server so the java.exe process shuts down and releases the port. Once the server starts back up you can start JVM and bring the application up.
Related
I have started a Flink Cluster via start-cluster.bat in the windows terminal.
Starting a local cluster with one JobManager process and one TaskManager process.
You can terminate the processes via CTRL-C in the spawned shell windows.
Web interface by default on http://localhost:8081/.
I was able to access the localhost URL but the Available Task Slots is given as 0. By default, it is expected to have one task (as configured in yamlfile). Anyone had a similar issue?
Have your processes started yet? It is possible that your JobManager startup failed. It is also possible that your system is running out of checks.
One possible solution:
Attach the remote JVM Debugger to TaskManager.
or: suspend=n
My Case:
FLINK_PROPERTIES=
jobmanager.rpc.address: jobmanager
taskmanager.memory.process.size: 2728m
taskmanager.memory.flink.size: 2280m
taskmanager.numberOfTaskSlots: 4
env.java.opts: "-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=*:5005"
parallelism.default: 4
Before:
The JobManager and TaskManager can be started normally with memory correctly configured. TaskManager log:
Starting taskexecutor as a console application on host bb166efde8f4.
Listening for transport dt_socket at address: 5005
After submitting the Job, it tries to create for about 3 minutes. And then fails with NoResourceAvailableException. Also, the dashboard show available task slot is 0.
Solution:
Set Remote JVM Debug in IDEA as follows:
-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5005 attach to remote jvm at localhost 5005
launch debugger.
submit the job.
Or you can set suspend=n instead of suspend=y in env var.
Now the available task slot is 4.
I have XAMPP installed on my Windows machine,
I am unable to stop the Tomcat server.
I have tried to kill the process with the Process Id as well,
But weirdly it's not showing in the Task Manager nor the local Services,
Which I referred from here -
apache service not stopping in xampp
Here's my XAMPP Control Panel screenshot -
Here's the Task Manager, I can't find the Process ID 3104 as shown in the XAMPP Control Panel-
I did run the command "Services.msc" to find and stop it but, no luck there either.
You should check the PID and verify that it is not associated with any other service/process mistaken for Tomcat by XAMPP.
In my case I had Jenkins running on port 8080 and starting XAMPP it was "guessing" that Tomcat was already running:
In reality, looking at the PID (198092 in my case) it was associated with java.exe:
and this was a process generated by my Jenkins server running on that port:
This is why you cannot stop Tomcat from there... (it is not Tomcat running on 8080).
To verify this and properly start Tomcat you can try this:
Stopping Jenkins:
Will remove the service running on 8080 and XAMPP is able to correctly detect that Tomcat is not running:
At this point you can Start Tomcat in XAMPP (and it should start for real this time):
Going to the localhost page, port 8080 you will have a proof of it:
If you want you can now successfully stop it from XAMPP:
On Windows:
XAMPP opens a shell(CMD) on starting tomcat just close that shell.
I have a problem with running my sample Spring Boot Application.
When I try to run it, this error occurs:
java.net.BindException: Address already in use: bind
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Unknown Source)
at sun.nio.ch.Net.bind(Unknown Source)
at sun.nio.ch.ServerSocketChannelImpl.bind(Unknown Source)
at sun.nio.ch.ServerSocketAdaptor.bind(Unknown Source)
at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:473)
o.apache.catalina.core.StandardService : Failed to initialize connector [Connector[org.apache.coyote.http11.Http11NioProtocol-8080]]
org.apache.catalina.LifecycleException: Failed to initialize component [Connector[org.apache.coyote.http11.Http11NioProtocol-8080]]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:106)
at org.apache.catalina.core.StandardService.initInternal(StandardService.java:559)
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:814)
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)
at org.apache.catalina.startup.Tomcat.start(Tomcat.java:335)
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.initialize(TomcatEmbeddedServletContainer.java:57)
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.<init>(TomcatEmbeddedServletContainer.java:52)
at
Is it ok the first time you run it, and run it again you get an error?
If this is the case, You need to stop service before running again.
Here is a way to stop.
Click the stop button that looks like this:
"Address already in use" means, there is already another application running on port 8080. Use your OS tools to find that process and end it, before you start your application, or let your application run on another port. If you use an embedded server in your Boot application, you can specify the following property:
server.port=8085
Of course you can choose whatever port you want.
I have a very simple solution:
As the answer above stated, when you start Spring Boot app, the PID of underneath server(Tomcat or Undertow, or whatever) will be shown in the console; you may start again the app without terminating the former one, especially when you are in debug mode, thus the error. This applies to Intellij, too.
But, if you have started again, the PID is no longer available for you because previous session output is cleared.
So, if you are using Eclipse, just close it, and open Task Manager to terminate other java.exe JVM process. Be sure that you have no other JVM-based services running which cannot be stopped. (Like Kafka server, Apache Storm, etc.)
The Tomcat instance is one of them.
Log shows that server is already started on port 8080. I faced the same problem. go to windows task manager and end process that is javaw.exe, it worked on my application.
Two possibilities
P1.Another Application is using port 8080
Solution:-
a.Stop that application and free port 8080 for your application.
b.Change your application server port, for that create a file named
application.properties in resource folder and add property
server.port = 8085
(8085 can be replaced by any port number of your choice which will not conflict with other
application server ports)
location of application.properties file
snippet of application.properties file
P2. Your application is already running
Solution
a. Pretty simple solution for this situation is stop your currently
running application and rerun it
b.If you want to run multiple instances of your application then keep
current application running change server port as explained above and
run the application the new instance will run of another port.
Even I faced this issue u can just stop the application(there is a stop button on the top toolbar) and restart again it worked for me and I used STS
In the Eclipse situation, check if there are items running in the window "Progress"(Windows > Show View > Progress)
Stop the running process, which might be locking your desired port.
Got the same error.
The springboot application has inbuilt tomcat server which runs on port 8080..if you have any other process currently running on port 8080,The java.net.BindException will raise..so kill the processes which are using 8080 thorugh cmd as follows:
-->
open command prompt as Administrator.
--> netstat -ano | findstr :<PORT>
netstat -ano | findstr :8080
TCP 0.0.0.0:8080 0.0.0.0:0 LISTENING 10568
TCP [::]:8080 [::]:0 LISTENING 10568
-->taskkill /PID <PID> /F
taskkill /PID 10568 /F
Now if you want recheck your running process by using netstat -ano | findstr :8080 command..
and again restart or rerun our application..
This is for first ever time you wanted to run springboot application.
Hope this might be helpfull,worked for me :)
Second case:
In the first time you run ok right? and run again it got an error? If right, You need stop service before run again..if it is the case follow #Sang9xpro
answer above.
Seems your server is already up. If you are using linux based system, type following command in terminal to check which port is active on your system.
"ps -ef | grep 8080"(or whatever port is mentioned)
Now you need to kill this one if you wish to run the server on same port.
kill -9 8080
Voilla!! Try booting your application once again and it will work.
Extra:
You'll come to me complaining an important application is already listening on mentioned port(8080) and you do not want to kill it. No probs.
Create an application.properties file inside your resource folder and change port to whatever you like.
server.port = 8081
Voilla!! You did it!! :)
Let me know if further clarifications required.
This is because you have run the spring boot application once in your eclipse IDE and closed the application and you assume that the embedded server is stopped. But it is not the case. Even after you closed your application in Eclipse -> Console window, embedded tomcat server is running. What you can do is, run your spring boot application again and look at the console messages. Immediately after Spring Logo, you can find Starting on with PID 16676. This is the PID you need to search in "Wndows Task Manager -> Processes -> PID". Select that process and "End Task". Now if you start your spring boot application, it will start without issues.
The message i see when i try to run Integrated Weblogic server is
Port conflicts have been detected and the affected ports have been automatically reassigned to available ports.
Then I am unable to start my server. I have tried restarting the server but it did not help.
Windows
Press Ctrl+Shft+Esc click on Processes, End the JDeveloper(jDev64W.exe in my case) and Java instances(java.exe in my case). Now restart the JDeveloper and try running the Integrated Weblogic Server again.
Linux
Use the command jps -l. Select the process id corresponding to weblogic.server.
Use kill -9 <process-id> to kill the running instance
If it still does not work, restart the computer to ensure all the ports have been released.
When I add the following Java options to enable debugging:
JAVA_OPTS="$JAVA_OPTS -noverify -Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=5005"
I get the following error whenever I try to shutdown the tomcat:
ERROR: transport error 202: bind failed: Address already in use ["transport.c",L41]
ERROR: JDWP Transport dt_socket failed to initialize, TRANSPORT_INIT(510) ["debugInit.c",L500]
JDWP exit error JVMTI_ERROR_INTERNAL(113): No transports initializedFATAL ERROR in native method: JDWP No transports initialized, jvmtiError=JVMTI_ERROR_INTERNAL(113)
Thank you for a nice short explanation, PHeath! Following your advice, I found the best way to solve the problem is simply to use CATALINA_OPTS instead of JAVA_OPTS.
Looking into catalina.sh, one can see CATALINA_OPTS is only used by the "start" and "start-security" commands, whereas JAVA_OPTS is also used by the "stop" command (at least with Tomcat 6.0.33 on openSUSE 12.1).
At least if you have Tomcat installed on Linux using a package manager then modifying the CATALINA_OPTS variable in /etc/tomcat6/tomcat6.conf (or whatever path in your distribution) is cleaner than changing the catalina.sh script directly, for the package manager assumes that the user changes only configuration files and breaking this assumption may cause problems when upgrading the Tomcat packages (e. g. lost settings because the catalina.sh file is overwritten).
I think one should prefer CATALINA_OPTS over JAVA_OPTS not only for JDWP but for many other options as well: e. g. if one uses the heap size option -Xmx... then it would be reasonable to put it into CATALINA_OPTS, as the "stop" command does not need much heap.
You are trying to debug tomcat on startup, so it binds to port 5005 when the jvm starts.
When you run catalina.sh stop, it starts up another jvm which also tries to bind to port 5005.
You need to move the debug args to the run and start arguments (in catalina.sh) of tomcat, putting them straight into the JAVA_OPTS is the cause of the issue you're having.
The problem is your tomcat is still running on the debug port(5005) or some other service running on the same port(5005).
If tomcat still running, you can kill it
if it in linux environment ps -ef|grep java, and identify the process id of it. and kill the process using sudo kill -9 .
If it in windows environment got to task manager and kill the tomcat and java process.
Now you should be able to start the server in debug mood without any prob.
This can happen on debugging unit test through the tool(eclipse) which has been executed through the maven. To sole this you can flow the same process.
First close the Eclipse and kill the java process as well and start it again.
This is due to both applications are listening the same port number i.e 8000 while running in debug mode.
One quick solution is change the debug port to 8001 in startup.bat
SET DEBUGPORT=8001
It seems that the port 5005 is already in use. Check open ports with netstat command.
This may be because you already opened tomcat. Check your processes.
It appears you are starting Tomcat with the Debugger enabled, This causes the JVM to attach to the Process for Debugging, However in the catalina.sh there is a case statement for start, stop, restart, so on and so forth. Issuing the stop command still adds this in as it is part of your Global JAVA_OPTS and tries to start the debugger listening on the same port for the shutdown command. If you remove the address=50005 from your JAVA_OPTS or use the start jdpa commands to start the VM with the debugger this will fix your problem.
Look at the default catalina.sh in the latest Tomcat distribution if you need a clean copy. It sounds like someone has made changes inside yours that are invalid and causing JDPA to run on start, stop, any command issued.
set JPDA_ADDRESS=8001 in catalina.bat i.e debug port
and change all 3 ports in server.xml
In my case (Tomcat installed form tarball) I had those debug options unintentionally set in my env. This fixed the error:
$ unset JAVA_OPTS