enable the event script with "set event-options event-script file check_jdhcpd.slax"

check_jdhcpd.slax

version 1.1;

ns junos = "http://xml.juniper.net/junos/*/junos";
ns xnm = "http://xml.juniper.net/xnm/1.1/xnm";
ns jcs = "http://xml.juniper.net/junos/commit-scripts/1.0";


import "../import/junos.xsl";

var $event-definition = {
        <event-options> {
                <generate-event> {
                        <name> "check_jdhcpd_event";
                        <time-interval> "60";
                        <no-drift>;
                }
                <policy> {
                        <name> "check_jdhcpd";
                        <events> "check_jdhcpd_event";
                        <then> {
                                <event-script> {
                                        <name> "check_jdhcpd.slax";
                                }
                        }
                }
        }
}


template exit($slvl, $msg) {
        expr jcs:syslog("external." _ $slvl, $script _ ": ", $msg);
        terminate;
}


match / {
        <event-script-results> {

                var $con = jcs:open();

                if (not($con)) {
                        call exit($slvl = "error", $msg = "unable to connect to local mgd");
                }

                var $grep_jdhcpd_rpc := {
                        <request-shell-execute> {
                                <command> "ps ax | grep '[j]dhcpd'";
                        }
                }
                var $grep_jdhcpd_result = jcs:execute($con, $grep_jdhcpd_rpc);

                if ( ! $grep_jdhcpd_result ) {
                        var $restart_jdhcpd_rpc := {
                                <command> "restart dhcp-service";
                        }
                        var $restart_jdhcpd_result = jcs:execute($con, $restart_jdhcpd_rpc);
                        call exit($slvl = "warning", $msg = "jdhcpd was not running; restarted");
                }
        }
}