mysql - Zabbix 数据库升级失败。无法添加或更新子行: a foreign key constraint fails

Question

更改内容:

看起来Zabbix在数据库升级期间创建了一个TMP表，将数据从原始表复制到TMP表，删除原始表，使用约束创建一个新表，尝试将数据从tmp表复制到新表并失败了。我删除了trigger_discovery表的对比，它被更新，然后它跳转到graph_discovery并失败。我将重新添加约束，但为什么会失败以及需要做什么？

Zabbix 日志:

query:   [create table graph_discovery_tmp (graphid bigint unsigned not null,parent_graphid bigint unsigned not null) engine=innodb]
query:   [update dbversion set mandatory=2030012,optional=2030012]
query:   [insert into graph_discovery_tmp (select graphid,parent_graphid from graph_discovery)]
query:   [update dbversion set mandatory=2030013,optional=2030013]
query:   [drop table graph_discovery]
query:   [update dbversion set mandatory=203001,optional=203001]
query:   [create table graph_discovery (graphid bigint unsigned not null,parent_graphid bigint unsigned not null,primary key (graphid)) engine=innodb]
query:   [update dbversion set mandatory=2030015,optional=2030015]
query:   [create index graph_discovery_1 on graph_discovery (parent_graphid)]
query:   [ update dbversion set mandatory=2030016,optional=2030016]
query:   [alter table graph_discovery add constraint c_graph_discovery_1 foreign key (graphid) references graphs (graphid) on delete cascade]
query:   [update dbversion set mandatory=2030017,optional=2030017]
query:   [alter table graph_discovery add constraint c_graph_discovery_2 foreign key (parent_graphid) references graphs (graphid)]
query:   [update dbversion set mandatory=2030018,optional=2030018]
query:   [insert into graph_discovery (select graphid,parent_graphid from graph_discovery_tmp)]
query failed:   [1452] Cannot add or update a child row: a foreign key constraint fails (`zabbix`.`graph_discovery`, CONSTRAINT `c_graph_discovery_1` FOREIGN KEY (`graphid`) REFERENCES `graphs` (`graphid`) ON DELETE CASCADE) [insert into graph_discovery (select graphid,parent_graphid from graph_discovery_tmp)]
query:   [insert into graph_discovery (select graphid,parent_graphid from graph_discovery_tmp)] failed, setting transaction as failed
   database upgrade failed
   End of DBcheck_version():FAIL

Answer 1

Zabbix 2.2 至 2.4

/var/log/zabbix-server/zabbix_server.log

[Z3005]查询失败:[1452]无法添加或更新子行:外键约束失败(zabbix.graph_discovery，CONSTRAINT c_graph_discovery_1 外键 (graphid) 引用 graphs (graphid) 删除级联) [插入 graph_discovery (从 graph_discovery_tmp 中选择 graphid,parent_graphid) ]

use zabbix; 
DROP TABLE graph_discovery;
CREATE TABLE `graph_discovery` (
        `graphid` bigint unsigned NOT NULL,
        `parent_graphid` bigint unsigned NOT NULL,
        PRIMARY KEY (graphid)
) ENGINE=InnoDB;