I downloaded Logstash-1.5.0 on Windows 8.1 and tried to run it in the command prompt.
First I checked the java version.
Then changed the directory to logstash-1.5.0/bin
then entered the command logstash -e 'input { stdin { } } output { elasticsearch { host => localhost } stdout { } }' it gave the following error:
Cannot locate java installation, specified by JAVA_HOME
The Logstash folder is on C: and the version of Java is 1.7.0_25. I've set the JAVA_HOME environmental variables to the jdk /bin directory, but still it doesn't work.
I'm new to Logstash. Can somebody tell me in detail why this happens and help me fix it?
Set the JAVA_HOME and PATH environmental variables like this:
JAVA_HOME = C:\Program Files\Java\jdk1.7.0_25
PATH = C:\Program Files\Java\jdk1.7.0_25\bin
In my case the problem was that I set the JAVA_HOME variable with a space in the end:
"set JAVA_HOME=c:\Programs\Java "
instead of
"set JAVA_HOME=c:\Programs\Java"
And logstash couldn't figure that out :) Removing the space fixed the issue.
On Windows when you change environment over the system settings, you have to close and reopen the command shell, before the changes take effect.
Step by step:
Locate your java JRE installation directory you want to use. For example: "C:\Program Files\Java\jre7"
Open start menu right click computer and select settings. In System settings window on right side click on "Extended Systemsettings".
On Tab extended select environment variables, add your JAVA_HOME variable to your path and hit OK.
Open command shell and check environment by entering "set" and hit enter. Look if JAVA_HOME is set.
If your JAVA_HOME is now correctly set, logstash should work.
Related
My default java is located in the following location-
admin#pc1:~$ readlink -f $(which java)
/usr/lib/jvm/java-11-openjdk-amd64/bin/java
So,I set the above directory (ie./usr/lib/jvm/java-11-openjdk-amd64/bin/java) as the JAVA_HOME in the Jenkins-Global Tool Configuration but, it's showing the following message-
/usr/lib/jvm/java-11-openjdk-amd64/bin/java is not a directory on the
Jenkins master (but perhaps it exists on some agents)
So I removed the /bin/java -portion and pasted the following /usr/lib/jvm/java-11-openjdk-amd64but, it still showing the same message.
$JAVA_HOME was not previously set to my pc,So I set the $JAVA_HOME to /usr/lib/jvm/java-11-openjdk-amd64 through terminal;then I again tried to set the JAVA_HOME in Jenkins, but, it's still showing the same message.
What is the reason?
Are you using any separate user than admin to start Jenkins? In that case, you need to check if java_home is set for that user also? For my case, I am using root user to start jenkins an java home is set for root user and it works fine.One more place to check that is Jenkins configuration file . Possible location is /etc/default or /etc/sysconfig/jenkins for most of the Linux OS. Here, you can specify env variable to set JAVA_HOME. Please refer this url for reference :https://support.cloudbees.com/hc/en-us/articles/209715698-How-to-add-Java-arguments-to-Jenkins-
JAVA_HOME should be set like /usr/lib/jvm/java-6-openjdk ....
I was trying to run ./gradlew bootRun in both Git Bash and PowerShell, and got this error: ERROR: JAVA_HOME is set to an invalid directory: C:\Program Files\Java\jre1.8.0_121
The gradlew file is inside the project directory that cloned from git. It is a practice project from Spring official guide. There's also a gradle.bat file with these lines:
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%\bin\java.exe
I also tried to run Eclipse EE, which got no problem. The environment setting should be no problem.
In addition to Ernest's answer, the JAVA_HOME it wants is the actual directory, not the bin folder like the path wants for javac. Took me a while to work that out
Looks like your JAVA_HOME variable resolves to a JRE installation directory. But as you're talking about Gradle, you're surely trying to build/compile code.
If you have a JDK installed, change JAVA_HOME variable to point to it. The folder name should typically start with "jdk". Otherwise, you have to install a Java Development Kit.
You could also try exporting the variable manually before running gradle on the command line (SET JAVA_HOME=<path to the jdk directory>)
Please set the JAVA_HOME variable location to the path to JDK instead of JRE.
If that is correctly set, check the environment variables in Edit mode.
In my case, I found that a semicolon was appended to the JAVA_HOME environment variable at the end.
To check:
Open the environment variables list.
Select the variable and click Edit.
Remove the semicolon and Save.
Closed the settings and checked the path in cmd using echo %JAVA_HOME%, and ran gradle -v.
It ran perfectly.
Note: Check the variable value by clicking the Edit button as we cannot see the semicolon instead. Windows adds a semicolon so that the same variable can be used as the path to multiple locations.
Added picture for reference:
Found a solution I hadn't seen before in my googling.
Open up your gradlew.bat in some editor. On line 34-ish you will see this:
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%\bin\java.exe
if exist "%JAVA_EXE%" goto init
echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
add this line to the error message: echo %JAVA_EXE%
so it looks like this
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo %JAVA_EXE%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
Then run your gradlew.bat file.
The error should now appear again, but with the added echo of the path to JAVA_EXE. In my case it was echoing \bin\java.exe and NOT the full path C:\...\Java\jre1.8.0_251\bin\java.exe
to fix this, I changed
set JAVA_EXE=%JAVA_HOME%\bin\java.exe
to
set JAVA_EXE=C:\...\Java\jdk1.8.0_261\bin\java.exe
The value is now hardcoded, true, but it worked. I don't know why gradle doesn't concat the variable name into the path.
I've found myself with the same issue, although my JAVA_HOME was set to the correct JDK path.
However Windows 10 appended a semicolon at the end of the path.
This way the JAVA_HOME variable would work anywhere but not with Gradle.
I'm posting this, because it might spare someone else the time I've been looking for it ;)
If you didn't have admin rights, override the JAVA_HOME in User Environment Variable. Avoid typo by selecting the Java home folder. You must include folder before the bin ( do not include /bin) for java home.
If none of the above works open the gradle.bat file in an editor and make sure that IT is correct , in my case gradle was the problem
I've downloaded java jdk1.8.0.7.tar.gz file from the official website and unzipped it into my home directory. Now to set the $JAVA_HOME variable I used the follwing commands command nano .bashrc and then appending export $JAVA_HOME=/home/shivam/Java/jdk1.8.0.7 at the end of the file . But whenever I run the command sudo $CATALINA_HOME/bin/startup.sh I get an error message saying
Neither the JAVA_HOME nor the JRE_HOME environment variable is defined
At least one of these environment variable is needed to run this program
I don't understand why it is unable to find the java path though I've installed tomcat and set its home variable the this way, which worked.
I wan't to install Java manually without using apt-get. Kindly guide .
You want to append the following to .bashrc:
JAVA_HOME=/home/shivam/Java/jdk1.8.0.7
Note the missing $ at the start.
Also remember that the file won't effect your current shell without sourceing it first.
Also, when running a command with sudo, you are running it as the root user, not as yourself. So the environment variable needs to be set for the root user, not yourself.
You can run sudo env | grep JAVA_HOME to see whether it is set for root.
Have you run .bashrc ?
source .bashrc
Try add the following 2 lines in your .bashrc file:
JAVA_HOME=/home/shivam/Java/jdk1.8.0.7/
export JAVA_HOME
I am trying to install jboss-as-7.1.1.Final.
First I remarqued that I can't access the administration page of JBoss. Then I tried to add user and password from the command prompt and I saw this message appear:
JAVA_HOME is not set. Unexpected result may occur. Set JAVA_HOME to the directory of your local JDK to avoid this message.
When I've search for the problem, I've understand that I have to set java_home in the run.bat. But my run.bat content is different:
#!/bin/sh
# Placeholder for people used to run.sh from older version redirecting them to read the readme
echo
echo ========================================================================================
echo
echo To start JBoss Application Server please see `pwd`/../README.txt
echo
echo ========================================================================================
echo
JAVA_HOME is generally set as a Environmental(classpath) variable in your OS.
Batch files generally pick up JAVA_HOME value dynamically from this variable.
In Windows OS :-
Right click on My Computer > Advanced system settings > Environment Variables > Environment Variables > New > Variable Name as JAVA_HOME > Variable Value as JDK installation home path.
As #laune mentioned, you need to run run.bat not run.sh
For creating user, refer this https://docs.jboss.org/author/display/AS71/add-user+utility
if you are working on Ubuntu, then the solution is:
export JAVA_HOME=/usr/lib/jvm/default-java
after that, you can continue your installation.
I want to use elastic search with my PHP application.
after running service install command , I am getting fallowing error.
C:\elasticsearch-0.90.10\bin>service install
JAVA_HOME points to an invalid Java installation (no java.exe found in "C:\Progr
am Files (x86)\Java\jdk1.7.0_25\bin"). Existing...
Open up and Look into the service.bat file:
It searches for:
%JAVA_HOME%\bin\java.exe
hence your %JAVA_HOME% should not include bin in it.
A workaround if you do not have privileges to set up the environmental variables:
open the service.bat file,
a) Remove the line:
if NOT DEFINED JAVA_HOME goto err
b) Replace %JAVA_HOME% with your java jdk path, something like: C:\Program Files\Java\jdk1.7.0_51
Note: This is just a workaround which works all the time.
from your error message we can see your JAVA_HOME points to
C:\Program Files (x86)\Java\jdk1.7.0_25\bin
while it should point to
C:\Program Files (x86)\Java\jdk1.7.0_25
I think the error message is fairly descriptive , you should look in this folder
is java.exe there ? If not then your JAVA_HOME environment variable to point to the correct installation
heres a page showing how to do that
https://confluence.atlassian.com/display/DOC/Setting+the+JAVA_HOME+Variable+in+Windows
1st hit on google.
Either JAVA_HOME points to the wrong location or you don't have Java installed. Check and see if there's an install of Java in the location specified.
Also note that the JAVA_HOME variable should point to the root of the Java install not the /bin folder. This is being added by the program you're executing.
To change the JAVA_HOME variable to test further use the following in the command prompt:
set JAVA_HOME=c:\xxxx
Once you've established the correct value to use this can be permanently changed in Control Panel>>System>>Advanced System Settings>>Advanced>>Environment Variables
set JAVA_HOME=C:\Program Files (x86)\Java
Above must fix the issue, I came across the same issue while installing the elastic search.
i gave a try by giving "bin" part of path but it did not work, so i just give the top folder "java" in path, it worked.
Just to add my own experience.
i was setting JAVA_HOME using tab autocompletion.
It ends up something like "C:\Program files...:" and it didn't work saying that it cannot find the java program. I solved typing the JAVA_HOME path in the set command without using tab completion. The problem was probably related to the " in the env variable