Atlas日志里面报I have no server backend, closing

Question

大家好，我用Atlas连接mysql，大多数情况能正常读写数据库的。但是有时却有问题，日志里面报如下错误：

2015-08-25 16:43:40: (warning) (libevent) event_del: event has no event_base set.
2015-08-25 16:43:40: (critical) last message repeated 1 times
2015-08-25 16:43:40: (critical) proxy-plugin.c.1450: I have no server backend, closing connection
2015-08-25 16:43:40: (critical) network-mysqld.c.1387: plugin_call(CON_STATE_READ_QUERY) failed
2015-08-25 16:43:51: (warning) (libevent) event_del: event has no event_base set.
2015-08-25 16:43:51: (critical) last message repeated 1 times
2015-08-25 16:43:51: (critical) proxy-plugin.c.1450: I have no server backend, closing connection
2015-08-25 16:43:51: (critical) network-mysqld.c.1387: plugin_call(CON_STATE_READ_QUERY) failed
2015-08-25 16:44:05: (warning) (libevent) event_del: event has no event_base set.
2015-08-25 16:44:05: (critical) last message repeated 1 times
2015-08-25 16:44:05: (critical) proxy-plugin.c.1450: I have no server backend, closing connection
2015-08-25 16:44:05: (critical) network-mysqld.c.1387: plugin_call(CON_STATE_READ_QUERY) failed
2015-08-25 16:44:33: (warning) (libevent) event_del: event has no event_base set.
2015-08-25 16:44:33: (critical) last message repeated 1 times
2015-08-25 16:44:33: (critical) proxy-plugin.c.1450: I have no server backend, closing connection
2015-08-25 16:44:33: (critical) network-mysqld.c.1387: plugin_call(CON_STATE_READ_QUERY) failed
2015-08-25 16:46:13: (warning) (libevent) event_del: event has no event_base set.
2015-08-25 16:46:13: (critical) last message repeated 1 times
2015-08-25 16:46:13: (critical) proxy-plugin.c.1450: I have no server backend, closing connection
2015-08-25 16:46:13: (critical) network-mysqld.c.1387: plugin_call(CON_STATE_READ_QUERY) failed
2015-08-25 16:46:27: (warning) (libevent) event_del: event has no event_base set.
2015-08-25 16:46:27: (critical) last message repeated 1 times
2015-08-25 16:46:27: (critical) proxy-plugin.c.1450: I have no server backend, closing connection
2015-08-25 16:46:27: (critical) network-mysqld.c.1387: plugin_call(CON_STATE_READ_QUERY) failed
2015-08-25 17:05:48: (warning) (libevent) event_del: event has no event_base set.
2015-08-25 17:05:48: (critical) last message repeated 1 times
2015-08-25 17:05:48: (critical) proxy-plugin.c.1450: I have no server backend, closing connection
2015-08-25 17:05:48: (critical) network-mysqld.c.1387: plugin_call(CON_STATE_READ_QUERY) failed
2015-08-25 17:08:36: (warning) (libevent) event_del: event has no event_base set.
2015-08-25 17:08:36: (critical) last message repeated 1 times
2015-08-25 17:08:36: (critical) proxy-plugin.c.1450: I have no server backend, closing connection
2015-08-25 17:08:36: (critical) network-mysqld.c.1387: plugin_call(CON_STATE_READ_QUERY) failed
2015-08-25 17:08:39: (warning) (libevent) event_del: event has no event_base set.

我的后台情况：

mysql> SELECT * FROM backends;
+-------------+------------------+-------+------+
| backend_ndx | address          | state | type |
+-------------+------------------+-------+------+
|           1 | 10.70.26.39:3309 | up    | rw   |
|           2 | 127.0.0.1:3309   | up    | ro   |

Answer 1

原因定位了没？发现偶尔甚至会导致去写从库

Answer 2

也有可能是同一个用户，在master库和slave库上的用户名和密码不一样。我目前很少出现这种情况了，并在生产上使用。不过，我又遇到了一个问题，就是通过Atlas插入数据库的中文有的正常，有的乱码

Answer 3

感觉 和 不同网段有关系

Answer 4

我也遇到这个问题