Schedule Jenkins job using Jenkins Rest API

You can use the Build Triggers -> Build periodically job configuration option. Use that to specify the exact time for starting a new build.

If you need to change that time, use the Jenkins REST API to...

1. programmatically retrieve the job configuration in XML format, then
2. modify the scheduling time in that configuration (see below)
3. re-post the new job configuration

In bash, this can be done with a one-liner (using curl and sed) to modify the XML section below (the example schedules a run for noon, Feb 29):

[...]<triggers><hudson.triggers.TimerTrigger><spec>00 12 29 02 * </spec></hudson.triggers.TimerTrigger></triggers>[...]

Note:

• as a plus you wouldn't depend on any supplementary plugins
• caveat: you cannot specify a year in the schedule -- so if you need to schedule builds more than one year in advance then you need some magic on top.

I can't get it to work, but the source code for the plugin references a "schedule" url action and a "date" param.

I tried something like:

http://localhost:8080/job/jobname/job/develop/schedule?date=2020-02-20

Which it didn't reject but I can't see a build.

below is the source code of the action performed when the button is pressed to schedule:

var newRequest = function() {    if (window.XMLHttpRequest) {        return new XMLHttpRequest();    } else {        return new ActiveXObject("Microsoft.XMLHTTP");    }}var sumbitScheduleRequest = function(absoluteUrl, quietPeriodInSeconds, isJobParameterized){    if(isJobParameterized){        // if job has parameters, redirect to build page, so user can set parameters         window.location = absoluteUrl + "build?delay=" + quietPeriodInSeconds + "sec";    }else{        // if job has NO parameters, submit build directly        var csrfCrumb;        var csrfRequest = newRequest();        csrfRequest.onreadystatechange = function() {            if (csrfRequest.readyState === 4) {                if (csrfRequest.status === 200 || csrfRequest.status === 201) {                    csrfCrumb = JSON.parse(csrfRequest.responseText);                } else {                    // csrf might be deactivated                }                // do the actual submit                 var xmlhttp = newRequest();                xmlhttp.onreadystatechange = function() {                    if (xmlhttp.readyState === 4) {                        if (xmlhttp.status === 200 || xmlhttp.status === 201) {                            window.location = absoluteUrl;                            return false;                        } else {                            window.location = absoluteUrl;                            return false;                        }                    }                };                xmlhttp.open("POST", absoluteUrl + "build?delay=" + quietPeriodInSeconds + "sec", true);                if (csrfCrumb) {                    xmlhttp.setRequestHeader(csrfCrumb.crumbRequestField, csrfCrumb.crumb)                }                xmlhttp.send();            }        };        csrfRequest.open('GET', rootURL + '/crumbIssuer/api/json', false);        csrfRequest.send();     }}