Install Jstack On Ubuntu
jstack requires the Process ID of the running Java application. You can find this using jcmd (which is also installed with the JDK) or ps.
Using jcmd (Recommended):
jcmd
Output Example:
2345 com.example.MyApplication
1234 jcmd
In this example, 2345 is the PID of your target Java application. install jstack on ubuntu
Using ps (Alternative):
ps -ef | grep java
jstack -F <PID>
To install on Ubuntu, you must install the full Java Development Kit (JDK)
, as it is a diagnostic tool not included in the standard Java Runtime Environment (JRE). Stack Overflow 1. Verify Current Installation First, check if is already available on your system by running: >/dev/null; "jstack is Installed" "jstack is Not Installed" Use code with caution. Copied to clipboard If it is not found, you likely only have the JRE installed. perifery.atlassian.net 2. Install OpenJDK (Recommended) jstack requires the Process ID of the running
Ubuntu provides OpenJDK through its official repositories. You should match the JDK version with the version of the Java application you are troubleshooting. perifery.atlassian.net For the latest default version: sudo apt update sudo apt install default-jdk Use code with caution. Copied to clipboard For a specific version (e.g., JDK 17 or 21): # Install JDK 17 sudo apt install openjdk- # Install JDK 21 sudo apt install openjdk- Use code with caution. Copied to clipboard For headless environments (Servers):
If you don't need GUI support, use the headless version to save space: sudo apt install openjdk- -jdk-headless Use code with caution. Copied to clipboard Ask Ubuntu 3. Verify the Installation Once installed, confirm that is in your system's PATH: jstack -version Use code with caution. Copied to clipboard
If multiple versions of Java are installed, use the following command to select the active one: Ask Ubuntu sudo update-alternatives --config java Use code with caution. Copied to clipboard 4. Basic Usage , you need the Process ID (PID) of your running Java application. You can find it using (also included in the JDK) or Oracle Help Center # Find the PID # Capture a thread dump to a file jstack
who started the Java process to avoid "Unable to open socket file" errors. Red Hat Customer Portal file once you've captured it? How to capture a Java thread dump using jstack - Atlassian
Here's content about installing and using jstack on Ubuntu:
If your organization requires Oracle JDK, download the .deb package from the Oracle JDK download page. Then install it with dpkg:
sudo dpkg -i oracle-jdk-17_linux-x64_bin.deb
Oracle JDK also includes jstack in its bin/ directory.