php在linux下检测mysql同步状态的方法_php技巧

本文实例讲述了php在linux下检测mysql同步状态的方法。分享给大家供大家参考。具体分析如下：

这里通过两个实例来介绍mysql同步状态检测实现方法。代码如下:
代码如下:#!/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实例代码,代码如下:
check_rep.php：
代码如下: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", "用户名");
define("PASSWORD", "密码");
define("DEBUGMODE", false);

$instances = get_instances();

if($instances){
echo <<



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 = "未知异常";
break;
case -3:
$memo = "查询失败";
break;
case -2:
$memo = "无法连接端口";
break;
case -1:
$memo = "状态未知";
break;
case 0:
$memo = "OK";
break;
case 1:
$memo = "同步失败";
if($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 = "数据库未设置同步";
break;
}
echo "

n";
}else{
echo "

n";
}
}
echo "

instance	result	Slave_IO_Running	Slave_SQL_Running	Master_Host	Master_Port	Replicate_Do_DB	memo
instance	result	Slave_IO_Running	Slave_SQL_Running	Master_Host	Master_Port	Replicate_Do_DB	Slave_IO_State	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error
{$host}	{$res['result']}	{$res['Slave_IO_Running']}	{$res['Slave_SQL_Running']}	{$res['Master_Host']}	{$res['Master_Port']}	{$res['Replicate_Do_DB']}	{$memo}
{$host}	{$res['result']}	{$res['Slave_IO_Running']}	{$res['Slave_SQL_Running']}	{$res['Master_Host']}	{$res['Master_Port']}	{$res['Replicate_Do_DB']}	{$res['Slave_IO_State']}	{$res['Last_IO_Errno']}	{$res['Last_IO_Error']}	{$res['Last_SQL_Errno']}	{$res['Last_SQL_Error']}

n";
echo <<

END;
}else{
die("no mysql instances defined.");
}
check_status_api.php：
代码如下:/*
* 检查mysql服务器的同步状态
*/
function check_mysql_replication_status($host, $username, $password)
{
//默认状态未知
$r = array(
"result" => -1
);
try{
$dbh = @mysql_connect($host, $username, $password);
if(!$dbh){
//无法连接
$r["result"] = -2;
return($r);
}
$query = "SHOW SLAVE STATUS";
$res = @mysql_query($query, $dbh);
$err = @mysql_error();
if($err){
//无法连接
$r["result"] = -3;
return($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：
代码如下://GRANT REPLICATION CLIENT ON *.* TO '用户名'@'监控主机ip' IDENTIFIED BY '密码'; $mysql_instances =

array();
$mysql_instances[] = "远程ip:端口";

function get_instances()
{
global $mysql_instances;
return $mysql_instances;
}
将以上三个PHP文件放在虚拟目录中,然后通过URL访问.

访问方式：http://ip/check_repl.php?key=xupeng

希望本文所述对大家的php程序设计有所帮助。