Jenkins系列

虚幻0516

1.环境说明
　　操作系统：win7旗舰版64bit
　　jdk:sun JDK1.7.0_80 64bit
　　tomcat:apache-tomcat-8.0.41
　　jenkins：2.32.3LST

　　本系列教程如果没有特殊说明，都会默认采用此环境。

2.定时构建的写法
　　勾选『Poll SCM』,点击输入框右边的帮助图标：

　　弹出的内容中详细解释了定时构建的用法，并给出了几个例子：
　　

This field follows the syntax of cron (with minor differences). Specifically, each line consists of 5 fields separated by TAB or whitespace:　　
MINUTE HOUR DOM MONTH DOW
　　
MINUTE    Minutes within the hour (
0–59)　　
HOUR    The hour of the day (
0–23)　　
DOM    The day of the month (
1–31)　　
MONTH    The month (
1–12)　　
DOW    The day of the week (
0–7) where 0 and 7 are Sunday.　　
To specify multiple values
for one field, the following operators are available. In the order of precedence,　　

　　

* specifies all valid values　　
M
-N specifies a range of values　　
M
-N/X or */X steps by intervals of X through the specified range or whole valid range　　
A,B,...,Z enumerates multiple values
　　
To allow periodically scheduled tasks to produce even load on the system, the symbol H (
for “hash”) should be used wherever possible. 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.　　

　　
The H symbol can be used with a range. For example, H H(
0-7) * * * means some time between 12:00 AM (midnight) to 7:59 AM. You can also use step intervals with H, with or without ranges.　　

　　
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.　　

　　
Beware that
for the day of month field, short cycles such as */3 or H/3 will not work consistently near the end of most months, due to variable month lengths. For example, */3 will run on the 1st, 4th, …31st days of a long month, then again the next day of the next month. Hashes are always chosen in the 1-28 range, so H/3 will produce a gap between runs of between 3 and 6 days at the end of a month. (Longer cycles will also have inconsistent lengths but the effect may be>
　　
Empty lines and lines that start with # will be ignored as comments.
　　

　　
In addition, @yearly, @annually, @monthly, @weekly, @daily, @midnight, and @hourly are supported as convenient aliases. These use the hash system
for automatic balancing. For example, @hourly is the same as H * * * * and could mean at any time during the hour. @midnight actually means some time between 12:00 AM and 2:59 AM.　　

　　
Examples:
　　

　　
# every fifteen minutes (perhaps at :
07, :22, :37, :52)　　
H
/15 * * * *　　
# every ten minutes
in the first half of every hour (three times, perhaps at :04, :14, :24)　　
H(
0-29)/10 * * * *　　
# once every two hours at
45 minutes past the hour starting at 9:45 AM and finishing at 3:45 PM every weekday.　　

45 9-16/2 * * 1-5　　
# once
in every two hours slot between 9 AM and 5 PM every weekday (perhaps at 10:38 AM, 12:38 PM, 2:38 PM, 4:38 PM)　　
H H(
9-16)/2 * * 1-5　　
# once a day on the 1st and 15th of every month except December
　　


3.示例
　　在22:21新建的项目，希望在22:22触发构建。