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This project is a quick and dirty replacement for running a cron daemon inside docker containers
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config.yml | ||
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LICENSE | ||
main.go | ||
Makefile | ||
README.md | ||
syslog.go |
Luzifer / rsyslog_cron
This project is a quick and dirty replacement for running a cron daemon inside docker containers.
Advantages
- It logs the output of the jobs into a remote syslog target (like Papertrail) using TCP syslog
- Crons can be started on seconds, not only on minutes like a conventional cron
- Due to the logs cron jobs can get debugged
- On success and failure a HTTP ping to Healthchecks or Cronitor can be executed
Usage
- Put the binary into your container
- Generate a YAML file containing the cron definition
- Watch your crons get executed in your log stream
Config format
---
rsyslog_target: logs.myserver.com:12345
log_format: '<{{ syslogpri .Severity }}>{{ .Date.Format "Jan 02 15:04:05" }} {{ .Hostname }} {{ .JobName }}: {{ .Message }}'
jobs:
- name: date
schedule: "0 * * * * *"
cmd: "/bin/date"
args:
- "+%+"
ping_success: "https://..."
ping_failure: "https://..."
rsyslog_target
- needs to be a rsyslog endpoint supporting TCP plain connections like Loggly or Papertrail does.log_format
- format to use for generating the log line (above shown is default and does not need to be provided)schedule
- consists of 6 instead of the normal 5 fields:
field allowed values
----- --------------
second 0-59
minute 0-59
hour 0-23
day of month 1-31
month 1-12 (or names, see below)
day of week 0-7 (0 or 7 is Sun, or use names)
Standard format for crontab entries is supported. (See man 5 crontab
)