{"id":2428,"date":"2014-06-25T18:27:50","date_gmt":"2014-06-25T16:27:50","guid":{"rendered":"https:\/\/supportex.net\/?p=2428"},"modified":"2019-05-10T15:44:28","modified_gmt":"2019-05-10T13:44:28","slug":"python-running-services-logging-rsyslog-fedora","status":"publish","type":"post","link":"https:\/\/supportex.net\/blog\/2014\/06\/python-running-services-logging-rsyslog-fedora\/","title":{"rendered":"Python: running services with logging to Rsyslog on Fedora"},"content":{"rendered":"

So, here is a task. We need to run some Python script as service with logging to Rsyslog on Fedora. As you may know, \u00a0Fedora starting from 15 uses systemd<\/a> which is a replacement for SysVinit and Upstart. With use of it to setup Python service with logging is quite simple. Let’s assume we have this logger function:<\/p>\n

from config import DEBUG\ndef logger(message):\n    if DEBUG == 1:\n        print \"   \", message\n<\/pre>\n
Now we need to add systemd config for our service. Put if to \/lib\/systemd\/system\/web-py.service.<\/p>\n
[Unit]\nDescription=web-py\n\n[Service]\nExecStart=\/usr\/local\/bin\/web-py.py\nType=simple\nUser=web\nGroup=web\nRestart=always\nStandardOutput=syslog\nStandardError=syslog\nSyslogIdentifier=web-py\n\n[Install]\nWantedBy=multi-user.target<\/pre>\n
Enable it:<\/p>\n
systemctl enable web-py.service<\/code><\/p>\n
Let’s set up Rsyslog to store logs from our service in a way we want:<\/p>\n
$template DynaFile,\"\/var\/log\/web\/%$YEAR%\/%$MONTH%\/%$DAY%\/%PROGRAMNAME%.log\"\nif $programname startswith 'web' then -?DynaFile\n& ~<\/pre>\n
First line defines dynamic template DynaFile<\/em>, the second one is quite self-explanatory. It says Rsyslog: if program name (SyslogIdentifier<\/em> in our case) starts with ‘web’, then use DynaFile<\/em> template. And the last (“& ~”) forces Rsyslog not to try to find other matches for this message, otherwise it could be\u00a0also stored to \/var\/log\/messages<\/em>, for instance, which is not what we are trying to get. It should be added before other facilities.<\/p>\n
Now start our service and restart Rsyslog:<\/p>\n
service web-py start\nservice rsyslog restart<\/pre>\n
Now after your service starts working you should have its logs in files like ‘\/var\/log\/web\/2011\/12\/07\/web_py.log’.<\/p>\n
[root@playground ~]#tail \/var\/log\/web\/2011\/12\/07\/web-py.log\n 2011-12-07T13:39:18+01:00 playground web-py[28635]: 2011-12-07 13:31:54.348987 - +starting web-py on 0.0.0.0:8189...<\/pre>\n
Working.<\/p>\n","protected":false},"excerpt":{"rendered":"
So, here is a task. We need to run some Python script as service with logging to Rsyslog on Fedora. As you may know, \u00a0Fedora starting from 15 uses systemd which is a replacement for SysVinit and Upstart. With use of it to setup Python service with logging is quite simple. Let’s assume we have… <\/p>\n
Read <\/a><\/div>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[152],"tags":[],"class_list":["post-2428","post","type-post","status-publish","format-standard","hentry","category-linux"],"yoast_head":"\nPython: running services with logging to Rsyslog on Fedora – Supportex.NET blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/supportex.net\/blog\/2014\/06\/python-running-services-logging-rsyslog-fedora\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python: running services with logging to Rsyslog on Fedora – Supportex.NET blog\" \/>\n<meta property=\"og:description\" content=\"So, here is a task. 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