1、创建一个存储过程让定时任务Event调用：
打开Navicat查询界面：
在上述存储过程中将自定义的sql语句填写到BEGIN与END之间。
2、查看并打开event_scheduler调度事件：
再上图查询窗口执行查看：
show variables like '%sche%';
注：如果event_scheduler值为OFF则使用set global event_scheduler =1;打开。
3、创建Event调度任务：
保存完毕，则在1中定义的存储过程scheduler_sync()将会被每隔10秒执行一次！
二、使用纯SQL语句创建定时任务Event。
1、进入到mysql ，并开启event_schduler：
set global event_scheduler =1; show variables like '%event%'; |
2、进入wishstack创建存储过程（本次测试数据库为wishstack）：
CREATE PROCEDURE sync_date_2_monitor() BEGIN /*-- 下述加入自定义的mysql处理逻辑 --*/ /*-- ---------------------------- -- 先删除 alert_msg 数据库表数据 -- 再同步 alert_msg 更新相关数据 -- ----------------------------*/ DELETE FROM monitor_screen.alarm_msg; INSERT INTO monitor_screen.alarm_msg(id, alarm_id, resource_type, alarm_type, created_time, content, `level`) SELECT UUID() AS id, id AS alarm_id, "2" AS resource_type, CASE alarm_type WHEN "state" THEN "状态告警" END AS "alarm_type", created_time, description AS content, CASE `level` WHEN "general" THEN "1" WHEN "serious" THEN "2" WHEN "general" THEN "3" END AS "level" FROM alarm; /*-- ---------------------------- -- 先删除 overall_statistic 数据库表数据 -- 再同步 overall_statistic 更新相关数据 -- ----------------------------*/ DELETE FROM monitor_screen.overall_statistic; INSERT INTO monitor_screen.overall_statistic(id, user_num_online, user_num_all, tenant_num, business_num, vm_num) select a.id, b.user_num_online, c.user_num_all, d.tenant_num, e.business_num, f.vm_num FROM (SELECT UUID() AS id) AS a join (SELECT COUNT(id) AS user_num_online from `user` WHERE login_state=0 AND deleted=0) AS b join (SELECT COUNT(id) AS user_num_all from `user` WHERE deleted=0) AS c join (SELECT COUNT(id) AS tenant_num FROM `tenant` WHERE deleted=0 ) AS d join (SELECT COUNT(id) AS business_num FROM `business` WHERE deleted=0 ) AS e join (SELECT COUNT(id) AS vm_num FROM `instance` WHERE deleted=0 ) AS f ; /*-- ---------------------------- -- 先删除 tenant_res_spnd_t5 数据库表数据 -- 再同步 tenant_res_spnd_t5 更新相关数据 -- ----------------------------*/ DELETE FROM monitor_screen.tenant_res_spnd_t5; INSERT INTO monitor_screen.tenant_res_spnd_t5 SELECT UUID() AS id,tenant.`name` AS tenant_name, vm_num FROM ( (SELECT tenant_id, COUNT(id) AS vm_num FROM instance WHERE instance.deleted != 1 GROUP BY tenant_id) AS a LEFT JOIN tenant ON a.tenant_id=tenant.id AND tenant.deleted != 1 ); /*-- ---------------------------- -- 先删除 resource_spending 数据库表数据 -- 再同步 resource_spending 更新相关数据 -- ----------------------------*/ DELETE FROM monitor_screen.resource_spending; INSERT INTO monitor_screen.resource_spending(id, created_time, `hour`, cpu_use_ratio, memory_use_ratio) SELECT UUID() AS id, created_time, date_format(created_time, '%H') AS `hour`, AVG(cpu_rate) AS cpu_use_ratio, AVG(memory_rate) AS memory_use_ratio FROM instance GROUP BY date_format(created_time, '%Y-%m-%d %H'); /*-- ---------------------------- -- 先删除 cloud_tenant 数据库表数据 -- 再同步 cloud_tenant 更新相关数据 -- ----------------------------*/ DELETE FROM monitor_screen.cloud_tenant; INSERT INTO monitor_screen.cloud_tenant SELECT UUID() AS id, tenant.`id` AS tenant_id, tenant.`name` AS tenant_name, NULL AS lon, NULL AS lat, COUNT(DISTINCT CASE WHEN `user`.login_state = 0 AND `user`.deleted != 1 THEN `user`.id END) AS online_user_num, COUNT(DISTINCT CASE WHEN instance.`status` = 'active' AND instance.deleted != 1 THEN instance.id END) AS online_vm_num, COUNT(DISTINCT CASE WHEN `user`.deleted != 1 THEN `user`.id END) AS user_num, COUNT(DISTINCT CASE WHEN `business`.deleted != 1 THEN business.id END) AS business_num, COUNT(DISTINCT CASE WHEN instance.deleted != 1 THEN instance.id END) AS vm_num, COUNT(DISTINCT CASE WHEN alarm.`status` != 'fix' THEN alarm.id END) AS sec_alarm_num, AVG( instance.cpu_rate) AS vcpu_use_ratio, AVG( instance.memory_rate) AS memory_use_ratio FROM tenant LEFT JOIN tenant_user ON tenant_user.tenant_id = tenant.id LEFT JOIN `user` ON tenant_user.user_id = `user`.id LEFT JOIN business ON business.tenant_id = tenant.id LEFT JOIN alarm ON alarm.tenant_uuid = tenant.uuid LEFT JOIN instance ON instance.tenant_id = tenant.id GROUP BY tenant.id; /*-- ---------------------------- -- 先删除 data_center 数据库表数据 -- 再同步 data_center 更新相关数据 -- ----------------------------*/ DELETE FROM monitor_screen.data_center; INSERT INTO monitor_screen.data_center SELECT UUID() AS id, provider.id AS provider_id, provider.`name` AS provider_name, NULL AS lon, NULL AS lat, COUNT(DISTINCT virtual_server.id) AS computing_server_num, COUNT(DISTINCT storage_device.id) AS storage_server_num, COUNT(DISTINCT network_device.id) AS net_server_num, COUNT(DISTINCT instance.id) AS visual_machine_num, SUM(flavor.vcpus) AS visual_cpu_num, SUM(flavor.memory_mb) AS visual_memory_capacity, SUM(flavor.disk) AS visual_disc_capacity FROM provider LEFT JOIN virtual_server ON provider.id = virtual_server.provider_id LEFT JOIN storage_device ON provider.id = storage_device.provider_id LEFT JOIN network_device ON provider.id = network_device.provider_id LEFT JOIN instance ON provider.id = instance.provider_id LEFT JOIN flavor ON instance.flavor_uuid = flavor.uuid LEFT JOIN physical_resource ON provider.id = physical_resource.provider_id GROUP BY provider.id; /*-- ---------------------------- -- 先删除 link 数据库表数据 -- 再同步 link 更新相关数据 -- ----------------------------*/ DELETE FROM monitor_screen.link; INSERT INTO monitor_screen.link SELECT UUID() AS id, tenant_id, provider_id FROM tenant_provider; /*-- ---------------------------- -- 先删除 vm_resource_statistic 数据库表数据 -- 再同步 vm_resource_statistic 更新相关数据 -- ----------------------------*/ DELETE FROM monitor_screen.vm_resource_statistic; INSERT INTO monitor_screen.vm_resource_statistic SELECT UUID() AS id, SUM(vcpu_used) AS `assigned_vcpu_num`, SUM(memory_used) AS `assigned_vmemory_capacity`, SUM(storage_used) AS `assigned_vdisc_capacity`, SUM(memory) AS `vmemory_capacity`, SUM(`storage`) AS `vdisk_capacity` FROM physical_resource; END |
上述绿色内容请填入相应的存储过程逻辑代码！！！
3、测试当前存储过程是否正确（没有报错则说明存储过程创建成功）：
4、创建Event事件：
CREATE EVENT `My_Sync_Event` /*-- Event事件名称 --*/ ON SCHEDULE EVERY 10 SECOND /*-- 每隔10秒调度一次--*/ ON COMPLETION PRESERVE /*-- 当本次event到期了,event会被disable,但是该event还是会存在--*/ ENABLE /*-- 开启Event调度--*/ DO CALL scheduler_sync(); /*-- 调度任务调用上述创建的存储过程，周期执行任务--*/ |
5、对于Event的常用操作：
查看：SHOW EVENTS;
开启事件：
ALTER EVENT My_Sync_EventON COMPLETION PRESERVE ENABLE;
关闭事件：
ALTER EVENT My_Sync_EventON COMPLETION PRESERVE DISABLE;
删除事件：DROP EVENT IF EXISTS my_scheduler_event;
也可以在linux下用脚本实现：
#//usr/bin/sh
mysql -uroot -p123456 -e "source ./monitor_screen.sql"
mysql -uroot -p123456 -e "source ./monitor_screen_sync.sql"
mysql -uroot -p123456 -e "source ./monitor_screen.sql"
mysql -uroot -p123456 -e "source ./monitor_screen_sync.sql"