Traccar server 6.8.0 service failed to start
For me it happened on arm architecture, didn't want to even test Linux x64 on production server just in case.
Same problem here, on ARM architecture, using the image traccar/traccar:latest
Which ARM?
Raspberry Pi 3 Model B Plus
OS Debian GNU/Linux 11 (bullseye)
What CPU architecture and OS arch?
pi@raspberrypi:~ $ lscpu
Architecture: aarch64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Thread(s) per core: 1
Core(s) per socket: 4
Socket(s): 1
Vendor ID: ARM
Model: 4
Model name: Cortex-A53
Stepping: r0p4
CPU max MHz: 1400.0000
CPU min MHz: 600.0000
BogoMIPS: 38.40
L1d cache: 128 KiB
L1i cache: 128 KiB
L2 cache: 512 KiB
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Mmio stale data: Not affected
Vulnerability Retbleed: Not affected
Vulnerability Spec store bypass: Not affected
Vulnerability Spectre v1: Mitigation; __user pointer sanitization
Vulnerability Spectre v2: Not affected
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected
Flags: fp asimd evtstrm crc32 cpuid
pi@raspberrypi:~ $ uname -m
aarch64
pi@raspberrypi:~ $
Weird. There must be something special about Pi's aarch64.
Try running this in the Traccar docker:
/opt/traccar/jre/bin/java -version
Let us know the output.
Also have you tried Ubuntu or Debian images? Those might work better.
image-> traccar/traccar:debian FAIL
pi@raspberrypi:~/docker $ docker exec -it traccar bash
I have no name!@traccar:/opt/traccar$ /opt/traccar/jre/bin/java -version
openjdk version "21.0.7" 2025-04-15 LTS
OpenJDK Runtime Environment Temurin-21.0.7+6 (build 21.0.7+6-LTS)
OpenJDK 64-Bit Server VM Temurin-21.0.7+6 (build 21.0.7+6-LTS, mixed mode)
image-> traccar/traccar:ubuntu FAIL
pi@raspberrypi:~/docker $ docker exec -it traccar bash
ubuntu@traccar:/opt/traccar$ /opt/traccar/jre/bin/java -version
openjdk version "21.0.7" 2025-04-15 LTS
OpenJDK Runtime Environment Temurin-21.0.7+6 (build 21.0.7+6-LTS)
OpenJDK 64-Bit Server VM Temurin-21.0.7+6 (build 21.0.7+6-LTS, mixed mode)
image->traccar/traccar:6.7-ubuntu OK
pi@raspberrypi:~/docker $ docker exec -it traccar bash
ubuntu@traccar:/opt/traccar$ java -version
openjdk version "17.0.15" 2025-04-15
OpenJDK Runtime Environment (build 17.0.15+6-Ubuntu-0ubuntu124.04)
OpenJDK 64-Bit Server VM (build 17.0.15+6-Ubuntu-0ubuntu124.04, mixed mode, sharing)
Great, so sounds like Ubuntu version works.
with 6.7.x yes, but not with 6.8.x
The error is the same in all cases:
/opt/traccar $ /opt/traccar/jre/bin/java -Xms1g -Xmx1g -Djava.net.preferIPv4Stack=true -jar tracker-server.jar conf/traccar.xml
Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
at org.traccar.Main.<clinit>(Main.java:42)
Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(Unknown Source)
at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
... 1 more
What is cheapest Raspberry Pi I can get that has this issue? Want to test on it.
Following the recommendation of another user in this thread, I have confirmed that manually updating jdk to version 21.0.8 works as expected.
root@17976852bf99:/opt/traccar# apt-get update && apt-get install -y temurin-21-jdk
...
root@17976852bf99:/opt/traccar# java -version
openjdk version "21.0.8" 2025-07-15 LTS
OpenJDK Runtime Environment Temurin-21.0.8+9 (build 21.0.8+9-LTS)
OpenJDK 64-Bit Server VM Temurin-21.0.8+9 (build 21.0.8+9-LTS, mixed mode, sharing)
root@17976852bf99:/opt/traccar# /opt/traccar/jre/bin/java -version
openjdk version "21.0.7" 2025-04-15 LTS
OpenJDK Runtime Environment Temurin-21.0.7+6 (build 21.0.7+6-LTS)
OpenJDK 64-Bit Server VM Temurin-21.0.7+6 (build 21.0.7+6-LTS, mixed mode)
root@17976852bf99:/opt/traccar# java -Xms256m -Xmx256m -Djava.net.preferIPv4Stack=true -jar tracker-server.jar conf/traccar.xml
Database is up to date, no changesets to execute
UPDATE SUMMARY
Run: 0
Previously run: 27
Filtered out: 0
-------------------------------
Total change sets: 27
root@17976852bf99:/opt/traccar# /opt/traccar/jre/bin/java -Xms256m -Xmx256m -Djava.net.preferIPv4Stack=true -jar tracker-server.jar conf/traccar.xml
Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
at org.traccar.Main.<clinit>(Main.java:42)
Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(Unknown Source)
at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
... 1 more
root@17976852bf99:/opt/traccar#
What is cheapest Raspberry Pi I can get that has this issue? Want to test on it. - Sorry, I couldn't say, mine is a version from a few years ago.
Well it is up to @Anton now to upgrade his Traccar Server bundle to Java 21.0.8 for the bugs fix.