I'm trying to configure Jenkins Controller and Agent (maven server as agent node), but I'm getting an error while launching my node. This is the error
"Error: A JNI error has occurred, please check your installation and try again"
I have double-checked my configurations. created new user in maven and given it sudo access, configured ssh to allow password based authentication. I dont know what to do as I'm new to this concept. Please help me out.**
[09/24/22 16:28:17] [SSH] Opening SSH connection to 172.31.31.40:22.
[09/24/22 16:28:17] [SSH] WARNING: SSH Host Keys are not being verified. Man-in-the-middle attacks may be possible against this connection.
[09/24/22 16:28:17] [SSH] Authentication successful.
[09/24/22 16:28:17] [SSH] The remote user's environment is:
BASH=/usr/bin/bash
BASHOPTS=cmdhist:extquote:force_fignore:hostcomplete:interactive_comments:progcomp:promptvars:sourcepath
BASH_ALIASES=()
BASH_ARGC=()
BASH_ARGV=()
BASH_CMDS=()
BASH_EXECUTION_STRING=set
BASH_LINENO=()
BASH_SOURCE=()
BASH_VERSINFO=([0]="4" [1]="2" [2]="46" [3]="2" [4]="release" [5]="x86_64-koji-linux-gnu")
BASH_VERSION='4.2.46(2)-release'
DIRSTACK=()
EUID=1001
GROUPS=()
HOME=/home/jenkins
HOSTNAME=ip-172-31-31-40.ec2.internal
HOSTTYPE=x86_64
IFS=$' \t\n'
LANG=en_US.UTF-8
LESSOPEN='||/usr/bin/lesspipe.sh %s'
LOGNAME=jenkins
MACHTYPE=x86_64-koji-linux-gnu
MAIL=/var/mail/jenkins
OPTERR=1
OPTIND=1
OSTYPE=linux-gnu
PATH=/usr/local/bin:/usr/bin
PIPESTATUS=([0]="0")
PPID=22937
PS4='+ '
PWD=/home/jenkins
SHELL=/bin/bash
SHELLOPTS=braceexpand:hashall:interactive-comments
SHLVL=1
SSH_CLIENT='172.31.93.109 40612 22'
SSH_CONNECTION='172.31.93.109 40612 172.31.31.40 22'
TERM=dumb
UID=1001
USER=jenkins
XDG_RUNTIME_DIR=/run/user/1001
XDG_SESSION_ID=56
_=/etc/bashrc
Checking Java version in the PATH
openjdk version "1.8.0_342"
OpenJDK Runtime Environment (build 1.8.0_342-b07)
OpenJDK 64-Bit Server VM (build 25.342-b07, mixed mode)
[09/24/22 16:28:17] [SSH] Checking java version of /home/jenkins/jdk/bin/java
Couldn't figure out the Java version of /home/jenkins/jdk/bin/java
bash: /home/jenkins/jdk/bin/java: No such file or directory
[09/24/22 16:28:17] [SSH] Checking java version of java
[09/24/22 16:28:17] [SSH] java -version returned 1.8.0_342.
[09/24/22 16:28:17] [SSH] Starting sftp client.
[09/24/22 16:28:17] [SSH] Copying latest remoting.jar...
Source agent hash is 8D575C4C8219E6AB2039295EC545C6C3. Installed agent hash is 8D575C4C8219E6AB2039295EC545C6C3
Verified agent jar. No update is necessary.
Expanded the channel window size to 4MB
[09/24/22 16:28:18] [SSH] Starting agent process: cd "/home/jenkins" && java -jar remoting.jar -workDir /home/jenkins -jar-cache /home/jenkins/remoting/jarCache
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.UnsupportedClassVersionError: hudson/remoting/Launcher has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:756)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:473)
at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:601)
Agent JVM has terminated. Exit code=1
[09/24/22 16:28:18] Launch failed - cleaning up connection
[09/24/22 16:28:18] [SSH] Connection closed.```
