"Pkg: Error reading from file"

[tamasgal]

I am using frontail to monitor the log files coming from the DAQ system of a neutrino detector. We're very glad to have this tiny tool, thanks!

The DAQ system runs on CentOS and I decided to get the self-contained binary, however sometimes when I start frontail, I get the error:

Pkg: Error reading from file.

And the whole package seems to be broken. I then have to download it again (in fact I keep a backup copy and overwrite it regularly as a workaround).

This is probably caused due to the fact that when I run frontail with the --disable-usage-stats, I cannot quit it by pressing the CTRL+C keys, but I have to kill it using kill -9 PID. I guess some files might get corrupted due to this hard shutdown.

[mthenw]

Hey @tamasgal,

thanks for creating the issue. I will take a look.

[mthenw]

I released new version v.4.5.4. Please confirm that it works now.

[tamasgal]

Unfortunately it's not working. When the process is killed, the app image is broken:

> frontail logs/.log –ui-highlight –ui-highlight-preset frontail.json –theme dark -l 10000 -n 200 -p 8082
Pkg: Error reading from file.

Can you reopen it?

[mthenw]

@tamasgal which OS do you run?

[tamasgal]

CentOS 7. It happens when the process is killed... 🤔

[tamasgal]

Unfortunately we are still fighting with this issue, even after the latest update on signal handling.

[mthenw]

Have the issue changes you reported it in January? I mean are you able to quit frontail with CTRL+C? As I understand the issue is that when you kill the process with kill -9 the next time you try to run it you get an error "Pkg: Error reading from file."?

[tamasgal]

We are currently evaluating it since it might be that someone copied over an old backup file (which we used in a cronjob to repair it). I'll report back!

FYI: Two days ago I changed to supervisord and now we are managing also the frontail application with that. It sends SIGTERM, before the process was inside a tmux session and when it got killed the package has been damaged.

[mthenw]

@tamasgal any update?

[tamasgal]

Seems to work so far! I will close this...