本文實例講述了php在linux下檢測mysql同步狀態的方法。分享給大家供大家參考。具體分析如下：
這裡通過兩個實例來介紹mysql同步狀態檢測實現方法。代碼如下:
復制代碼 代碼如下:#!/bin/sh
#check MySQL_Slave Status
#crontab time 00:10
MYSQL_USER="root"
MYSQL_PWD="123456"
MYSQL_SLAVE_LOG="/tmp/check_mysql_slave.log"
EMAIL="1351010****@139.com"
MYSQL_PORT=`netstat -na|grep "LISTEN"|grep "3306"|awk -F[:" "]+ '{print $5}'`
MYSQL_IP=`ifconfig eth0|grep "inet addr" | awk -F[:" "]+ '{print $4}'`
MYSQL_SLAVE_STATUS=$(/usr/local/webserver/mysql/bin/mysql -u root -psylc23hua -S /tmp/mysql.sock -e
"show slave statusG" | grep -i "running")
IO_ENV=`echo $MYSQL_SLAVE_STATUS | grep IO | awk ' {print $2}'`
SQL_ENV=`echo $MYSQL_SLAVE_STATUS | grep SQL | awk '{print $2}'`
NOW=$(date -d today +'%Y-%m-%d %H:%M:%S')
if [ "$MYSQL_PORT" = "3306" ];then
echo "mysql is running!"
else
mail -s "warn!server: $MYSQL_IP mysql is down" "$EMAIL"
fi
if [ "$IO_ENV" = "Yes" -a "$SQL_ENV" = "Yes" ];then
echo "Slave is running!"
else
echo "[ $NOW ] Slave is not running!" >> "$MYSQL_SLAVE_LOG"
cat "$MYSQL_SLAVE_LOG" | mail -s "WARN! ${MySQL_IP}_replicate_error" "$EMAIL"
fi
exit 0
php實例代碼,代碼如下:
check_rep.php：
復制代碼 代碼如下:if(emptyempty($_REQUEST["key"])) die(':) missing key');
if($_REQUEST["key"] != 'xupeng') die(':) error key');
include("mysql_instance.php");
include("check_status_api.php");
define("USERNAME", "用戶名");
define("PASSWORD", "密碼");
define("DEBUGMODE", false);
$instances = get_instances();
if($instances){
echo <<
<!-- 30分鐘自動刷新 -->
END;
echo "
n";
if(!DEBUGMODE){
echo "
n";
}else{
echo "
n";
}
foreach($instances as $host){
$res = check_mysql_replication_status($host, USERNAME, PASSWORD);
if(!DEBUGMODE){
switch($res["result"]){
case -4:
$memo = "未知異常";
break;
case -3:
$memo = "查詢失敗";
break;
case -2:
$memo = "無法連接端口";
break;
case -1:
$memo = "狀態未知";
break;
case 0:
$memo = "OK";
break;
case 1:
$memo = "同步失敗";
if($res["Slave_IO_Running"] <> "Yes"){
$memo .= $res["Last_IO_Error"] . "(" . $res
["Last_IO_Errno"] . ")";
}
if($res["Slave_SQL_Running"] <> "Yes"){
$memo .= $res["Last_SQL_Error"] . "(" . $res
["Last_SQL_Errno"] . ")";
}
break;
case 2:
$memo = "數據庫未設置同步";
break;
}
echo "
n";
}else{
echo "
n";
}
}
echo "
<table border="">
<tbody>
<tr>
<td>instance</td>
<td>result</td>
<td>Slave_IO_Running</td>
<td>Slave_SQL_Running</td>
<td>Master_Host</td>
<td>Master_Port</td>
<td>Replicate_Do_DB</td>
<td>memo</td>
</tr>
<tr>
<td>instance</td>
<td>result</td>
<td>Slave_IO_Running</td>
<td>Slave_SQL_Running</td>
<td>Master_Host</td>
<td>Master_Port</td>
<td>Replicate_Do_DB</td>
<td>Slave_IO_State</td>
<td>Last_IO_Errno</td>
<td>Last_IO_Error</td>
<td>Last_SQL_Errno</td>
<td>Last_SQL_Error</td>
</tr>
<tr>
<td>{$host}</td>
<td>{$res['result']}</td>
<td>{$res['Slave_IO_Running']}</td>
<td>{$res['Slave_SQL_Running']}</td>
<td>{$res['Master_Host']}</td>
<td>{$res['Master_Port']}</td>
<td>{$res['Replicate_Do_DB']}</td>
<td>{$memo}</td>
</tr>
<tr>
<td>{$host}</td>
<td>{$res['result']}</td>
<td>{$res['Slave_IO_Running']}</td>
<td>{$res['Slave_SQL_Running']}</td>
<td>{$res['Master_Host']}</td>
<td>{$res['Master_Port']}</td>
<td>{$res['Replicate_Do_DB']}</td>
<td>{$res['Slave_IO_State']}</td>
<td>{$res['Last_IO_Errno']}</td>
<td>{$res['Last_IO_Error']}</td>
<td>{$res['Last_SQL_Errno']}</td>
<td>{$res['Last_SQL_Error']}</td>
</tr>
</tbody>
</table>
n";
echo <<
END;
}else{
die("no mysql instances defined.");
}
check_status_api.php：
復制代碼 代碼如下:/*
* 檢查mysql服務器的同步狀態
*/
function check_mysql_replication_status($host, $username, $password)
{
//默認狀態未知
$r = array(
"result" => -1
);
try{
$dbh = @mysql_connect($host, $username, $password);
if(!$dbh){
//無法連接
$r["result"] = -2;
return($r);
}
$query = "SHOW SLAVE STATUS";
$res = @mysql_query($query, $dbh);
$err = @mysql_error();
if($err){
//無法連接
$r["result"] = -3;
return($r);
}
$row = mysql_fetch_array($res);
$r = $row;
if(($r["Slave_IO_Running"] == "Yes") && ($r["Slave_SQL_Running"] == "Yes"))
{
$r["result"] = 0;
}else{
if(!emptyempty($row)){
$r["result"] = 1;
}else{
$r["result"] = 2;
}
}
}catch(Exception $e){
$r["result"] = -4;
}
return($r);
}
mysql_instance.php：
復制代碼 代碼如下://GRANT REPLICATION CLIENT ON *.* TO '用戶名'@'監控主機ip' IDENTIFIED BY '密碼'; $mysql_instances =
array();
$mysql_instances[] = "遠程ip:端口";
function get_instances()
{
global $mysql_instances;
return $mysql_instances;
}
將以上三個PHP文件放在虛擬目錄中,然後通過URL訪問.
訪問方式：http://ip/check_repl.php?key=xupeng
希望本文所述對大家的php程序設計有所幫助。
