本文操作的vps是美国的buyvm.net购买的，特点就是不限带宽，不限流量，要干啥你可以猜到，购买链接。
只有1G内存的vps的情况下，还要启动mysql，默认的参数会占用大量的内存，需要优化缩减：
默认情况下的配置：
mysql> show variables like '%performance_schema_max_table_instances%';
+----------------------------------------+-------+
| Variable_name | Value |
+----------------------------------------+-------+
| performance_schema_max_table_instances | -1 |
+----------------------------------------+-------+
1 row in set (0.04 sec)
mysql> show variables like '%table_definition_cache%';
+------------------------+-------+
| Variable_name | Value |
+------------------------+-------+
| table_definition_cache | 1400 |
+------------------------+-------+
1 row in set (0.01 sec)
mysql> show variables like '%table_open_cache%';
+----------------------------+-------+
| Variable_name | Value |
+----------------------------+-------+
| table_open_cache | 2000 |
| table_open_cache_instances | 16 |
+----------------------------+-------+
2 rows in set (0.00 sec)
修改my.cnf参数重的配置：
innodb_buffer_pool_size = 10M
performance_schema_max_table_instances = 200
table_definition_cache = 100
table_open_cache = 100
重启mysql
systemctl restart mysql
