我一直在试图找出导致我脚本中出现间歇性错误的原因。错误是:SQLSTATE [HY000]:常规错误:2006 MySQL服务器已经消失。
下面的脚本是执行curl的函数的一部分,从JSON响应中获取一些值,然后将它们写入表中。我说80%的时间它工作正常,然后另外20%我得到服务器消失错误。我无法确定任何导致它出错的趋势,它似乎是随机的。任何想法为什么我可能会收到此错误?谢谢你查看这个
...
//post via cURL
$ch = curl_init( $url );
$timeout = 500;
curl_setopt( $ch, CURLOPT_POST, 1);
curl_setopt( $ch, CURLOPT_POSTFIELDS, $myvars);
curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt( $ch, CURLOPT_CONNECTTIMEOUT, $timeout);
curl_setopt( $ch, CURLOPT_HEADER, 0);
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1);
$this->response = curl_exec( $ch );
$this->json_decoded = json_decode($this->response);
$this->full = print_r($this->json_decoded, true);
$client_leadid = $this->json_decoded->Parameters->lead_id;
$client_status = $this->json_decoded->Status;
$length = curl_getinfo($ch);
curl_close($ch);
//record in DB
$insert = $this->full.' | '.$url.' | '.$myvars.' | '.$this->date . ' | Time Taken: '.$length['total_time'];
$db->exec("UPDATE table SET client_resp = '$insert' WHERE global_id = '$this->leadid' LIMIT 1");
$db->exec("UPDATE table SET client_leadid = '$client_leadid' WHERE global_id = '$this->leadid' LIMIT 1");
答案 0 :(得分:4)
这可能是因为你的CURL请求比mysql连接超时
花费的时间更长任一 1)为CURL设置一个请求超时,以便它在错误时更快死亡(CURLOPT_CONNECTTIMEOUT仅用于连接 - CURLOPT_TIMEOUT用于请求的总长度,如果服务器没有及时响应,它将停止) 2)调高mysql空闲超时时间,防止服务器因不发送查询而断开连接 3)检测错误并自动重新连接到mysql
mysql> show variables like "%timeout%";
+--------------------------+-------+
| Variable_name | Value |
+--------------------------+-------+
| connect_timeout | 5 |
| delayed_insert_timeout | 300 |
| innodb_lock_wait_timeout | 50 |
| interactive_timeout | 28800 |
| net_read_timeout | 30 |
| net_write_timeout | 60 |
| slave_net_timeout | 3600 |
| table_lock_wait_timeout | 50 |
| wait_timeout | 28800 |
+--------------------------+-------+
9 rows in set (0.00 sec)
wait_timeout和interactive_timeout是你关心的两个