IntelliJ, can't start simple web application: Unable to ping server at localhost:1099

Question

I'm trying to make a simple web app in IntelliJ by following this tutorial: http://wiki.jetbrains.net/intellij/Creating_a_simple_Web_application_for_Tomcat_in_IntelliJ_IDEA_12

I believe my Tomcat is installed correctly since I see the tomcat pictures when I go to http://localhost:8080/

I've followed all the steps up until the part it tells me to run index.jsp, at which point I get the error:

Error: Exception thrown by the agent : java.net.MalformedURLException: Local host name unknown: java.net.UnknownHostException: nodename nor servname provided, or not known

I see this in the log:

Application Server was not connected before run configuration stop, reason:
           Unable to ping server at localhost:1099

This 1099 comes from the JMX port in Run -> Edit Configurations.

How do I fix this?

None of these answers, work for me. Did you find exact solution. — Krunal, Jun 15 '20 at 10:57

score 72 · Answer 1 · answered Jan 07 '14 at 22:39

72

To fix this you need add your machine name in the /etc/hosts file to point to localhost(127.0.0.1).

You can find your machine name by running the following command:

$ hostname
macbook-pro

From the output above you know your hostname is "macbook-pro". Edit "/etc/hosts" file and add that name at the end of line that lists 127.0.0.1

127.0.0.1 localhost macbook-pro

Save the file.

Now you IntelliJ should be able to start your server.

answered Jan 07 '14 at 22:39

bond

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Just to mention - that in my case it actually was a typo in JVM argument that was causing this – lia ant Jul 14 '15 at 13:47
Note: use sudo when opening the /etc/hosts file as it is READ-ONLY – Alex Wilson Dec 19 '16 at 19:31
I had this same error when trying to run a Spring Boot application from STS "Run As" -> "Spring Boot App". After adding my Mac's hostname pointing to localhost in the hosts file, it worked. Thanks bond! – E3G May 11 '17 at 17:53
4

If your going to give an OS specific answer mention that first. – Philip Rego Jul 24 '19 at 16:32

score 22 · Answer 2 · answered May 18 '16 at 19:05

22

See that the tomcat you are using is compatible with the Java version. For me the issue was Tomcat-9 required Java-8. If you have a older version of Java, you could use Tomcat-7 to test.

answered May 18 '16 at 19:05

Ujjwal Singh

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This was the issue for me. I changed to JDK 1.8 from JDK 1.7. In the Run/Debug configurations --> Edit Artifacts. changed the SDK version and Project SDK – Shardayyy Feb 24 '17 at 14:27

score 7 · Answer 3 · answered Aug 11 '15 at 20:19

7

I added my hostname to /etc/hosts on localhost. Added JAVA_HOME but still it showed the same error. In the console, there was output:

Unable to start as CATALINA_BASE contains a colon (:) character

I solved the problem by going to Edit configurations -> Startup/Connection -> changing CATALINA_BASE value to the tomcat installation folder. Before that, it was

CATALINA_BASE:   C:\Program Files\Apache Software Foundation\Tomcat 8.0

which can't be correct on a linux machine ;)

answered Aug 11 '15 at 20:19

vasil todorov

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This needs to be higher. I'm seeing the same problem in my IntelliJ, not sure where the value comes from. – Derek Jan 25 '16 at 19:59
There no need to set Catalina_home inside intellij – Philip Rego Jul 24 '19 at 16:48

score 5 · Answer 4 · answered Sep 04 '19 at 04:49

For those who encounter this when you just recently updated IntelliJ (In my case 2019.2).

I am using JBoss server so i tried to run standalone.bat in the command line and I saw the real issue on the console.

It can be different to yours, but in my case I saw:

failure description: "WFLYSRV0137: No deployment content with

And on that error I was able to fix this by removing the items (war or ear) inside the <deployments/> node in my standalone.xml

Hope this helps for those using JBoss+IntelliJ

score 4 · Answer 5 · answered Feb 25 '15 at 21:44

4

FYI Under certain network conditions your hostname may change or be incorrect. If you are on a mac the following will let you set your hostname fairly permanently:

sudo scutil --set HostName correct-name

answered Feb 25 '15 at 21:44

Trideep Gogoi

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This doesn't solve the problem. For me `sudo scutil --get HostName` returns the correct hostname but IntelliJ still has the issue OP asked about. Adding hostname to `/etc/hosts`, as @bond suggested, fixed the issue. – ehsanullahjan May 21 '15 at 16:10
This solved my problem ! My hostname contained a dot. I set it as simple as possible; set it in the hosts file as explained above and it works. – Bancarel Valentin Jan 10 '18 at 21:09

score 3 · Answer 6 · answered Apr 05 '14 at 00:45

This appears to be a problem with the way mac is handling reading the /etc/hosts file. See for example http://youtrack.jetbrains.com/issue/IDEA-96865

Adding the hostname to the hosts file as bond described should not be required, but it does solve the problem.

score 3 · Answer 7 · answered Nov 21 '15 at 15:57

3

My problem was that tomcat 8 and higher are not compatible with java 6. Changing to java 7 solved it.

answered Nov 21 '15 at 15:57

fxlex

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More generally, Tomcat X might be incompatible with Java Y. Check [here](http://tomcat.apache.org/whichversion.html) for version compatibilities. – Beyamor Feb 05 '16 at 21:21

score 3 · Answer 8 · answered Jun 28 '17 at 07:53

3

I had similar issue when I entered very big port here:

But when I corrected it to something smaller which is in offset range:

Issue was resolved.

answered Jun 28 '17 at 07:53

Alex

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Yes, port numbers are a 16 bit integer so only 0-65535 are available (and 0 is reserved, and 1-1023 can only be used by root/admin users). – Per Lundberg Oct 10 '18 at 13:03

score 3 · Answer 9 · answered Jun 04 '18 at 15:30

3

I had same problem. In "Edit Configurations.." -> "Tomcat Server" I changed JRE from "Default" to my current version with SDK directory address (like C:\Program Files\Java\jdk1.8.0_121\jre)

My Tomcat version is 8.5.31

answered Jun 04 '18 at 15:30

ArsTV

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Tomcat 8.5 is buggy as hell, switch to 9.0 – Erdinc Ay Oct 01 '19 at 10:41

score 2 · Answer 10 · answered Dec 23 '14 at 17:29

This error came to me when I configured (wrong) 3 Gb memory where there was none. IntelliJ does shows the real error message (Could not reserve enough space for object heap) in the Output frame. I was confused, and attracted by the message in the Event Log, which is to be ignored in this case.

score 2 · Answer 11 · answered Aug 23 '15 at 20:48

None of the answers above worked for me. In the end I figured out it was an configuration error (I used the android SDK and not Java SDK for compilation).

Got to [Right Click on Project] --> Open Module Settings --> Module --> [Dependendecies] and make sure you have configured and selected the Java SDK (not the android java sdk)

score 2 · Answer 12 · answered Dec 23 '15 at 07:36

2

I meet this question when i use intellij 15.0,then i update to 15.02 version. after that, I edit configurations and reset the Default JRE to my own JRE.It works well for me;

answered Dec 23 '15 at 07:36

user5091911

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score 2 · Answer 13 · answered Nov 22 '16 at 02:19

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I added the following VM Options and it worked for me:

-Dcom.sun.management.jmxremote= 
-Dcom.sun.management.jmxremote.port=1099 
-Dcom.sun.management.jmxremote.authenticate=false 
-Dcom.sun.management.jmxremote.ssl=false

answered Nov 22 '16 at 02:19

Ronald Manrique

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score 1 · Answer 14 · answered Nov 19 '14 at 14:27

1

I solve this problem adding the environment variables JAVA_HOME(C:\Program Files\Java\jdkx.x.x_xx) and JRE_HOME.

answered Nov 19 '14 at 14:27

cagigas

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score 1 · Answer 15 · answered Apr 17 '17 at 01:55

1

I had the same problem of "Unable to ping server at localhost:1099" while I was using intellij 2016 version.

However, as soon as I upgraded it to 2017 version(Ultimate 2017.1) which is installed using "ideaIU-2017.1.exe" the problem disappeared.

answered Apr 17 '17 at 01:55

Park JongBum

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Yushan ZHANG · Answer 16 · 2018-03-26T09:49:42.940

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I had this issue when running Tomcat 6.0.53 on Mac OS Sierra with Intellij IDEA to deploy Spring projects. This problem was solved after changing the Tomcat version to the 'tar.gz' one from official site. It seems the 'zip' one is for windows.

edited Mar 26 '18 at 09:49

answered May 30 '17 at 17:17

Yushan ZHANG

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score 1 · Answer 17 · answered Apr 09 '19 at 06:45

1

Setting project's SDK in IntelliJ (File > Project Structure > Project:Project SDK) worked for me

answered Apr 09 '19 at 06:45

Pavlo Zvarych

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yggdraa · Answer 18 · 2021-06-08T16:19:29.940

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If your tomcat contains file setenv.sh ([YOUR_CATALINA_HOME]/bin/setenv.sh) it may redefine the JAVA_OPTS variable that JIdea uses to set up JMX, so you have to add them there:

export JAVA_OPTS ="$JAVA_OPTS <whatever was in setenv.sh>"
echo $JAVA_OPTS

edited Jun 08 '21 at 16:19

answered Jun 08 '21 at 15:24

yggdraa

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score 1 · Answer 19 · answered Mar 31 '22 at 04:09

Below is the error I observed :

to resolve, in my case, I exit intelliJ and renamed folder ".idea" to ".idea_old" (so that I don't loose old config) and restarted intelliJ, It created a new ".idea" folder and I provided new tomcat configuration. On running tomcat this issue was removed.

score 0 · Answer 20 · answered May 07 '15 at 18:31

On top pointing my hostname to 127.0.0.1 in hosts (just run hostname in cmd to get it) as well as doing what David GC mentioned, for me the error cleared and debugging worked when I went into the tomcat configuration and changed the debugging startup script from startup.bat (which was just my monkeying around) back to the catalina.bat start default.

score 0 · Answer 21 · answered Oct 11 '17 at 09:02

I had same issue and my mistake was, I was trying to start tomcat server with incompatible version of JDK and installed Apache tomcat server. In my case I had installed JDK 7 with Apache tomcat 9. For Apache 9 JDK should be >= 8.

For compatibility check this https://tomcat.apache.org/whichversion.html

score 0 · Answer 22 · answered Jan 07 '20 at 22:07

0

For me, it was a much different solution since it was running on a virtualbox, so I had to edit the hosts file and add the virtualbox as a localhost

127.0.0.1 VirtualBox-blahblah

answered Jan 07 '20 at 22:07

3xCh1_23

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score 0 · Answer 23 · answered Nov 30 '20 at 01:14

In windows environment just check the PATH environment variable if Oracle JRE runtime refreshed the path and put himself at the very beginning of the path. In this case even if the JAVA_HOME AND JRE_HOME points to the correct JDK, the JRE will have precedence. And this case IntelliJ will not start Tomcat instance with the mentioned error message.

score 0 · Answer 24 · answered Jan 05 '21 at 11:04

0

If you are using java 7 then make sure you have Tomcat 7

brew install tomcat@7

and update run configuration to Tomcat 7

Tomcat 9 is working with java 8

answered Jan 05 '21 at 11:04

Tal Hakmon

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score 0 · Answer 25 · answered Apr 02 '21 at 01:53

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I'm leaving an answer for the jboss user.

If any of the people experiencing this error are using jboss, make sure the JBOSS_HOME location is correct.

answered Apr 02 '21 at 01:53

Minchul Joh

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score 0 · Answer 26 · answered Aug 27 '21 at 05:13

If we have the installed the compatible tomcat version for the application JAVA jdk version, we can resolve this issue easily.

In my case, when I am using Tomcat 10.1.0.M4 with JAVA JDK 1.8 I faced this issue. When I downgrade my tomcat version to 9.0.41, the issue resolved for me.

You can find the compatible tomcat version for the JAVA JDK here.. http://tomcat.apache.org/whichversion.html

score 0 · Answer 27 · answered Mar 24 '23 at 08:33

It's already in comment mentioned by @lia ant but I think it should be an answer.

Application Server was not connected before run configuration stop, reason:
           Unable to ping server at localhost:1099

this can happen because of typo in VM options in Edit Configurations...

score 0 · Answer 28 · answered Jun 09 '23 at 11:56

0

In my case it was due java version issues[changed 1.8 version only with compatible with tomcat 9] just changing the version and pointing to correct one solved the issues.

answered Jun 09 '23 at 11:56

user2492066

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score 0 · Answer 29 · answered Jul 13 '23 at 11:25

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just you need to check ,is it your tomcat version support your java or not for example jdk 1.8 didn't support tomcat 10.1. you should downgrade your tomcat version to 9

answered Jul 13 '23 at 11:25

MrG

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IntelliJ, can't start simple web application: Unable to ping server at localhost:1099

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