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用php编写Nagios插件-创新互联

最近写了一个检测网站是否能正常登陆的php脚本，并可以作为Nagios插件使用
Nagios插件是Nagios提供的一种可通过扩展方式部署的组件，该插件支持Java、C\C++、php等多种语言开发，操作员通过修改配置文件和相应参数，就能很方便地将该插件集成到Nagios中，实现对目标系统的监控。
Nagios插件程序可以提供两个返回值，一个是插件的退出状态码，一个是插件在控制台打印的第一行数据。退出状态码可以被Nagios主程序作为判断被监控系统服务状态的依据，控制台打印的第一行数据可以被Nagios主程序作为被监控系统服务状态的补充说明。
Nagios主程序可识别的状态码和说明如下：
状态码   说明
0   OK
1   WARNING
2   CRITICAL
3   UNKOWN

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********下面是php脚本的内容***********
#!/usr/bin/php
if($argc < 3){
echo 'php '.$argv[0].'  ‘.PHP_EOL;
exit(1);
}
class http{
  private $_curl;
  private $_user_agent;
  private $_cookie;
  private $_getopt = array();
  private $_postopt = array();
  function __construct(){
    $this->_user_agent = ‘Mozilla/5.0 (Windows NT 6.1; rv:15.0) Gecko/20100101 Firefox/15.0.1′;
    $this->_cookie = ‘/tmp/cookie.txt’;
  }
  public function get($url){
    $this->_getopt = array(CURLOPT_CONNECTTIMEOUT => 20,
               CURLOPT_URL => $url,
               CURLOPT_HEADER => 0,
               CURLOPT_NOBODY => 1,
               //CURLOPT_COOKIEJAR => $this->_cookie,
               //CURLOPT_COOKIEFILE => $this->_cookie,
               CURLOPT_USERAGENT => $this->_user_agent,
               CURLOPT_RETURNTRANSFER => 1);
    $this->_curl = curl_init();
    curl_setopt_array($this->_curl, $this->_getopt);
    $data = curl_exec($this->_curl);
    $http_code = curl_getinfo($this->_curl, CURLINFO_HTTP_CODE);
    $time_total = curl_getinfo($this->_curl, CURLINFO_TOTAL_TIME);
    $retval = $http_code.’,’.$time_total;
    curl_close($this->_curl);
    return $retval;
  }
  public function post($url,Array $post){
    $this->_postopt = array(CURLOPT_CONNECTTIMEOUT => 20,
                CURLOPT_URL => $url,
                CURLOPT_HEADER => 0,
                  CURLOPT_COOKIEJAR => $this->_cookie,
                CURLOPT_POST => 1,
                CURLOPT_POSTFIELDS => http_build_query($post),
                CURLOPT_USERAGENT => $this->_user_agent,
                CURLOPT_RETURNTRANSFER => 1);
    $this->_curl = curl_init();
    curl_setopt_array($this->_curl, $this->_postopt);
    $data = curl_exec($this->_curl);
    curl_close($this->_curl);
    return $data;
  }

  public function rpost($url){
    $this->_postopt = array(CURLOPT_CONNECTTIMEOUT => 20,
                                CURLOPT_URL => $url,
                                CURLOPT_HEADER => 1,
                                CURLOPT_NOBODY => 1,
                                CURLOPT_COOKIEFILE => $this->_cookie,
                                CURLOPT_USERAGENT => $this->_user_agent,
                                CURLOPT_RETURNTRANSFER => 1);
    $this->_curl = curl_init();
    curl_setopt_array($this->_curl, $this->_postopt);
    $data = curl_exec($this->_curl);
    $http_code = curl_getinfo($this->_curl, CURLINFO_HTTP_CODE);
    $time_namelookup = curl_getinfo($this->_curl, CURLINFO_NAMELOOKUP_TIME);
    $time_connect = curl_getinfo($this->_curl, CURLINFO_CONNECT_TIME);
    $time_starttransfer = curl_getinfo($this->_curl, CURLINFO_STARTTRANSFER_TIME);
    $time_total = curl_getinfo($this->_curl, CURLINFO_TOTAL_TIME);
    $size_download = curl_getinfo($this->_curl, CURLINFO_SIZE_DOWNLOAD);
    $speed_download = curl_getinfo($this->_curl, CURLINFO_SPEED_DOWNLOAD);
    curl_close($this->_curl);
    //$retval = date(‘Y-m-d_H:i:s’).’,’.$http_code.’,’.$time_namelookup.’,’.$time_connect.’,’.$time_starttransfer.’,’.$time_total.’,’.$size_download.’,’.$speed_download.’,’.$url;
    $retval = $http_code.’,’.$time_total;
    return $retval;
  }
}

class ciwong{
private $_username;
private $_passwd;
private $_http;
private $_sid;
function __construct($username = ’3sdf’, $passwd = ‘dfser’){
$this->_username = $username;
$this->_passwd = $passwd;
$this->_http = new http();
}
public function postLogin($url){
$post_url = ‘http://passport.ciwong.com/signin’;
$post['username'] = $this->_username;
$post['password'] = $this->_passwd;
$post['returnUrl'] = $url;
$data = $this->_http->post($post_url, $post);
$data = $this->_http->rpost($url);
return $data;
}
public function getUrl($url){
$data = $this->_http->get($url);
return $data;
}
}

$type = $argv[1];
$url = $argv[2];
$username = ’3244′;
$passwd = ’3423′;
$status_ok = 0;
$status_warning = 1;

$cw = new ciwong($username, $passwd);
switch($type){
case ‘get’:
$retval = $cw->getUrl($url);
    list($http_status, $time_total) = explode(‘,’, $retval);
    if ($http_status==200 || $http_status==301 || $http_status==302){
      echo “HTTP OK: Status line output is \”$http_status\” – $time_total second response time\n”;
      exit($status_ok);
    }else{
      echo “HTTP WARNING: Status line output is \”$http_status\” – $time_total second response time\n”;
      exit($status_warning);
    }
break;
case ‘post’:
$retval = $cw->postLogin($url);
    list($http_status, $time_total) = explode(‘,’, $retval);
    if($http_status==200 || $retval==301 || $retval==302){
      echo “HTTP OK: Status line output is \”$http_status\” – $time_total second response time\n”;
      exit($status_ok);
    }else{
      echo “HTTP WARNING: Status line output is \”$http_status\” – $time_total second response time\n”;
      exit($status_warning);
    }
break;
default:
    echo ‘php ‘.$argv[0].’  ‘.PHP_EOL;
    exit(1);
}

***********************over*******************************

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