OpenStack Mysql 1040, ' Too many connections ' problem

[email protected] ~]# Nova List

Error:an unexpected error prevented the server from fulfilling your request. (Operationalerror) (1040, ' Too many connections ') None None (HTTP 500)

Workaround:

Key_buffer = 64M

Max_allowed_packet = 16M

Thread_stack = 192K

Thread_cache_size = 8

Myisam-recover = BACKUP

Query_cache_limit = 1M

query_cache_size = 64M

Log_error =/var/log/mysqld.log

Expire_logs_days = 10

Max_binlog_size = 100M

max_connections = +

[email protected] ~]# Nova List

+--------------------------------------+---------------------------------------------------+--------+---------- --+-------------+-----------------------------------------+

| ID | Name | Status | Task State | Power State | Networks |

+--------------------------------------+---------------------------------------------------+--------+---------- --+-------------+-----------------------------------------+

| d4965275-f152-482c-9669-a54c90e0ec9b | 2222 | ACTIVE | -          | Running | publics=10.14.22.21; private=10.14.8.21 |

| 966aee59-3b6c-44b5-bccb-ee671dd8b999 | 3-windows-cn-966aee59-3b6c-44b5-bccb-ee671dd8b999 | ACTIVE | -          | Running | publics=10.14.22.5; private=10.14.8.6 |

| da60e9f7-009a-43c0-bf69-7999692d81ed | 333-da60e9f7-009a-43c0-bf69-7999692d81ed | ACTIVE | -          | Running | publics=10.14.22.8; private=10.14.8.8 |

| b936d13d-d28a-45b7-880e-dfadac17f0b9 | 3333 | ACTIVE | -          | Running | publics=10.14.22.11; private=10.14.8.11 |

| 08f5e6c2-d49a-4ded-a901-7bc21d474b2a | ASF | ACTIVE | -          | Running | publics=10.14.22.9; private=10.14.8.9 |

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