使用Nagios check_http监控Web服务

Question

我正在尝试使用Nagios的check_http插件监视Web服务.

我试图监控的网址包括url参数.

事实证明check_http插件在检查时会忽略url参数.

这是我的配置.

'check_http'命令定义

define command{
    command_name    check_http
    command_line    $USER1$/check_http -I $HOSTADDRESS$ $ARG1$
    }


define service{
    use                             local-service         ; Name of service template to use
    host_name                       pear
    service_description             HTTP
    check_command                   check_http!-u http://pear.com/total?eId=12345&env=abcde
    notifications_enabled           0
    }

Answer 1

尝试-u使用相对路径而不是完整URL 替换传入的值.

在此示例中,-H将提供hostname(),该主机名$HOSTADDRESS$取自主机定义的address字段pear.传递给-u参数的值应该是相对路径,例如:/total?eId=12345&env=abcde.我们将添加-u到check_http_with_args命令定义中,因此我们不必将它作为我们的服务定义中的参数的一部分传递.

define host {
        host_name                       pear
        alias                           pear
        address                         pear.com
        use                             linux-server
        contact_groups                  admins
        notification_interval           0
        notification_period             24x7
        notifications_enabled           1
        register                        1
}

define command{
    command_name    check_http_with_args
    command_line    $USER1$/check_http -H $HOSTADDRESS$ -u $ARG1$
}

define service {
        service_description             pear_total_http
        use                             generic-service
        check_command                   check_http_with_args!/total?eId=12345&env=abcde
        host_name                       pear
        contact_groups                  admins
        notification_interval           0
        notification_period             24x7
        notifications_enabled           1
        flap_detection_enabled          1
        register                        1
}

最后,Nagios执行的命令应该转换成如下所示的内容:

/usr/local/nagios/libexec/check_http -H pear.com -u /total?eId=12345&env=abcde

您可以尝试从命令行执行上述操作,以确保它适合您.

注意:将路径替换为check_httpNagios服务器上与安装位置对应的实际路径.

check_http我们引用的手册页的相关部分:

-H, --hostname=ADDRESS
    Host name argument for servers using host headers (virtual host)
    Append a port to include it in the header (eg: example.com:5000) 
...
-u, --url=PATH
    URL to GET or POST (default: /)

资料来源:https://www.monitoring-plugins.org/doc/man/check_http.html

编辑:

要从评论中回答您的问题,-k或者--header=将允许您传入标题.

-k, --header=STRING
    Any other tags to be sent in http header. Use multiple times for additional headers

资料来源:https://www.monitoring-plugins.org/doc/man/check_http.html

因此,要指定Accept标头,我将修改以下内容:

define command{
    command_name    check_http_with_args
    command_line    $USER1$/check_http -H $HOSTADDRESS$ -u "$ARG1$" -k "$ARG2$"
}

define service {
        service_description             pear_total_http
        use                             generic-service
        check_command                   check_http_with_args!/total?eId=12345&env=abcde!Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
        host_name                       pear
        contact_groups                  admins
        notification_interval           0
        notification_period             24x7
        notifications_enabled           1
        flap_detection_enabled          1
        register                        1
}

...添加-k "$ARG2$"到command_line所述的command定义和添加Accept: <MIME types>(例如Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8)与check_command所述的service定义.

另外,我包$ARG1$的-u "$ARG1$"部分command_line用双引号,因为我怀疑&的eId=12345&env=abcde是使shell认为命令结束前刚刚被终止&.用双引号括起参数应该使整个字符串看作一个完整的参数.