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PiSugar / pisugar-power-manager-rs

PiSugar Power Manger in rust language
https://www.pisugar.com/
GNU General Public License v3.0
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How to prevent from logging to syslog ? #21

Closed Cocoo68332 closed 3 years ago

Cocoo68332 commented 3 years ago

Hi,

I am monitoring the battery by rpimonitor which sends get* to the server pisugar-server each 10sec.

pisugar-server logs each access to /var/log/syslog, saturating the log.

I tried preventing the server from loging to syslog, but cant find an option. My server is launched with the default options (from /etc/default/pisugar-server) :

OPTS=--config config.json --model 'PiSugar 2 Pro' --web /usr/share/pisugar-server/web --http 0.0.0.0:8421 --ws 0.0.0.0:8422 --tcp 0.0.0.0:8423 --uds /tmp/pisugar-server.sock

I tried the -s option, but it does not change anything.

Is it possible to add an argument to -s to give a specific log file ? I can then pit /dev/null, or add an option to prevent from logging each access to the server ? or the ones from localhost ?

Thx !

L

Jan 8 15:31:55 pi4 pisugar-server[341]: [2021-01-08T14:31:55Z INFO pisugar_server] Incoming tcp connection from: 127.0.0.1:46092 Jan 8 15:31:55 pi4 pisugar-server[341]: [2021-01-08T14:31:55Z INFO pisugar_server] Incoming tcp connection from: 127.0.0.1:46094 Jan 8 15:31:55 pi4 pisugar-server[341]: [2021-01-08T14:31:55Z INFO pisugar_server] Incoming tcp connection from: 127.0.0.1:46096 Jan 8 15:32:05 pi4 pisugar-server[341]: [2021-01-08T14:32:05Z INFO pisugar_server] Incoming tcp connection from: 127.0.0.1:46098 Jan 8 15:32:05 pi4 pisugar-server[341]: [2021-01-08T14:32:05Z INFO pisugar_server] Incoming tcp connection from: 127.0.0.1:46100 Jan 8 15:32:05 pi4 pisugar-server[341]: [2021-01-08T14:32:05Z INFO pisugar_server] Incoming tcp connection from: 127.0.0.1:46102 Jan 8 15:32:05 pi4 pisugar-server[341]: [2021-01-08T14:32:05Z INFO pisugar_server] Incoming tcp connection from: 127.0.0.1:46104 Jan 8 15:32:06 pi4 pisugar-server[341]: [2021-01-08T14:32:06Z INFO pisugar_server] Incoming tcp connection from: 127.0.0.1:46106 Jan 8 15:32:06 pi4 pisugar-server[341]: [2021-01-08T14:32:06Z INFO pisugar_server] Incoming tcp connection from: 127.0.0.1:46108 Jan 8 15:32:06 pi4 pisugar-server[341]: [2021-01-08T14:32:06Z INFO pisugar_server] Incoming tcp connection from: 127.0.0.1:46110 Jan 8 15:32:06 pi4 pisugar-server[341]: [2021-01-08T14:32:06Z INFO pisugar_server] Incoming tcp connection from: 127.0.0.1:46112 Jan 8 15:32:06 pi4 pisugar-server[341]: [2021-01-08T14:32:06Z INFO pisugar_server] Incoming tcp connection from: 127.0.0.1:46114

fengyc commented 3 years ago

If -s or --syslog is not specified, pisugar-server would not write syslog. These logs are generated by systemd. The pisugar-server is managed by systemd, and all the logs are captured by systemd-journald.

Maybe you need to add a journald configuration to disable ForwardToSyslog, see man systemd and man journald.

Cocoo68332 commented 3 years ago

Thx for the advice. I was able to stop the log by adding to /etc/systemd/journald.conf :

MaxLevelSyslog=err

However, this is not a good solution because 1) it prevents ALL units logs, and 2) I am affraid to miss an alert message in case of power failure ?

To solve pb 1) I tried to add to /usr/lib/systemd/system/pisugar-server.service

LogLevelMax=err

But for a reason that I dont understand, this does not work, the log goes on.

So I backtracked to the forst solution to alter journald.conf.

fengyc commented 3 years ago

See https://www.freedesktop.org/software/systemd/man/systemd.exec.html#StandardOutput=

StandardOutput=append:/tmp/pisugar.log
StandardError=append:/tmp/pisugar-error.log