如何安排詹金斯的工作? [英] How do I schedule jobs in Jenkins?
问题描述
我在詹金斯(Jenkins)添加了一份新工作,我想定期安排该工作.
I added a new job in Jenkins, which I want to schedule periodically.
在配置作业中,我选中定期构建"复选框,并在 Schedule 文本字段中添加了表达式:
From Configure job, I am checking the "Build Periodically" checkbox and in the Schedule text field added the expression:
15 13 * * *
15 13 * * *
但是它不能在计划的时间运行.
But it does not run at the scheduled time.
安排工作是否正确?
该作业应在4:20 AM运行,但未运行.
The job should run at 4:20 AM, but it is not running.
推荐答案
通过将计划期设置为15 13 * * *
,您告诉Jenkins在每年第13个小时的第15分钟的第15分钟安排建设计划一天.
By setting the schedule period to 15 13 * * *
you tell Jenkins to schedule the build every day of every month of every year at the 15th minute of the 13th hour of the day.
Jenkins使用了 cron表达式,并且不同的字段是:
Jenkins used a cron expression, and the different fields are:
- MINUTES一小时内的分钟数(0-59)
- 一天中的小时数(0-23)
- DAYMONTH一个月中的某天(1-31)
- 一年中的MONTH月(1-12)
- DAYWEEK星期几(0-7),其中0和7是星期天
如果您希望每5分钟安排一次构建,这将完成工作:*/5 * * * *
If you want to schedule your build every 5 minutes, this will do the job : */5 * * * *
如果您希望每天8h安排构建,这将完成工作:0 8 * * *
If you want to schedule your build every day at 8h00, this will do the job : 0 8 * * *
在过去的几个版本(2014年)中,詹金斯有一个新参数H
(摘录自
For the past few versions (2014), Jenkins have a new parameter, H
(extract from the Jenkins code documentation):
为使定期执行的任务在系统上产生均匀的负载,应尽可能使用符号
H
(用于哈希").
To allow periodically scheduled tasks to produce even load on the system, the symbol
H
(for "hash") should be used wherever possible.
例如,使用0 0 * * *
进行许多日常工作将导致午夜时分大幅增加.相比之下,使用H H * * *
仍然可以每天执行一次每个作业,但不能同时执行所有作业,最好使用有限的资源.
For example, using 0 0 * * *
for a dozen daily jobs will cause a large spike at midnight. In contrast, using H H * * *
would still execute each job once a day, but not all at the same time, better using limited resources.
还请注意:
可以将
H
符号视为一个范围内的随机值,但实际上它是作业名称的哈希,而不是随机函数,因此该值对于任何给定的项目都保持稳定.
The
H
symbol can be thought of as a random value over a range, but it actually is a hash of the job name, not a random function, so that the value remains stable for any given project.
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