Pi4 good, Pi5 bad?

I am trying to install traccar 6.5 on a Raspberry Pi 5.

Last week I followed the instructions and successfully installed Traccar on a Pi 4.

This week I thought I'd compare how it runs on a Pi5. And so far, 'not at all' is how it runs.

As far as I can tell, I have done exactly the same things both times, but nothing happens on the Pi5 when I try to start traccar. There are no entries in the log, and when I try:

:/opt/traccar#  /opt/traccar/jre/bin/java -jar ./tracker-server.jar

I get:

bash: /opt/traccar/jre/bin/java: cannot execute: required file not found

I am not sure which required file is not found, though.
Is there some issue with the Pi5 that doesn't affect the Pi4, or have I done something wrong?

The only difference is Java jre. Check carefully.

Check /what/ carefully?

How about making sure java can be executed.

Going to a command line and typing java -version can tell us for sure if Java is installed.

I was under the impression that Traccar included java runtime. I didn't install java on the Pi4 and that responds like this

:/opt/traccar $ java -version
-bash: java: command not found

But traccar works just fine on that machine

Do the same thing on the Pi5 and I get the same result:

:/opt/traccar# java -version
bash: java: command not found

The difference is that traccar is running on the Pi4 and is not running on the Pi5

Your command presumes that the java binary is in your $PATH. And it is not. Since traccar is running on the Pi4, why don't you check where the java binary it's using is by doing 'systemctl cat traccar'

Pi 4 (traccar working) result:

$ sudo systemctl cat traccar
'# /etc/systemd/system/traccar.service
[Unit]
Description=traccar
After=network.target

[Service]
Type=simple
WorkingDirectory=/opt/traccar
ExecStart=/opt/traccar/jre/bin/java -jar tracker-server.jar conf/traccar.xml
SyslogIdentifier=traccar
SuccessExitStatus=143
WatchdogSec=600
Restart=on-failure
RestartSec=10

[Install]
WantedBy=multi-user.target

'# /etc/systemd/system/traccar.service.d/run-as-user.conf
[Service]
User=www-data
Group=www-data

Pi 5 result (Traccar not working)

'# /etc/systemd/system/traccar.service
[Unit]
Description=traccar
After=network.target

[Service]
Type=simple
WorkingDirectory=/opt/traccar
ExecStart=/opt/traccar/jre/bin/java -jar tracker-server.jar conf/traccar.xml
SyslogIdentifier=traccar
SuccessExitStatus=143
WatchdogSec=600
Restart=on-failure
RestartSec=10

[Install]
WantedBy=multi-user.target

'# /etc/systemd/system/traccar.service.d/run-as-user.conf
[Service]
User=www-data
Group=www-data

So I don't think that is the difference. They seem much the same as one another.

On the Pi4 (working):

:/opt/traccar/jre/bin $ ./java -version
openjdk version "21.0.4" 2024-07-16 LTS
OpenJDK Runtime Environment Temurin-21.0.4+7 (build 21.0.4+7-LTS)
OpenJDK 64-Bit Server VM Temurin-21.0.4+7 (build 21.0.4+7-LTS, mixed mode)

On the Pi5 (not working)

:/opt/traccar/jre/bin $ ./java -version
-bash: ./java: cannot execute: required file not found

At least there is a difference! The problem is that I don't know what that difference could be.
The directory listings on both machines look exactly the same

Aha! I found the problem. The Pi5 is running on 32-bit Debian.

That's a bit annoying to fix, but at least it explains the problem.

Thanks, everyone, for your help with this.

Sorry, my optimism was misplaced.

Pi4:

uname -a
Linux pi4.redacted.uk 6.6.62+rpt-rpi-2712 #1 SMP PREEMPT Debian 1:6.6.62-1+rpt1 (2024-11-25) aarch64 GNU/Linux

Pi5:

uname -a
Linux pi5.redacted.uk 6.6.62+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.6.62-1+rpt1 (2024-11-25) aarch64 GNU/Linux

what is different is
Pi4:

getconf LONG_BIT
64

Pi5:

getconf LONG_BIT
32

How do I fix this?

It appears to me that you installed the 32-bit version of Pi OS on the Pi5. You have to wipe the media and install the 64-bit OS.

Sadly, that is a non-trivial task. That Pi has a lot of other stuff on it. I think I'll run tracccar on a different server.