Nagios Core 上的 HTTP 监控

我正在尝试将主机添加到我的 Nagios Core 服务器 si 它检查其可用性的方式与您在 Nagios XI 上检查它的方式相同，因此我创建了我的.cfg文件，我添加了主机信息并尝试检查 .cfg 文件，但是每个我运行时/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg出现以下错误：

Website: https://www.nagios.org
Reading configuration data...
   Read main config file okay...
Error: Invalid max_check_attempts value for host 'myhost.com'
Error: Could not register host (config file '/usr/local/nagios/etc/objects/webpages.cfg', starting on line 7)
   Error processing object config files!


***> One or more problems were encountered while processing the config files...

     Check your configuration file(s) to ensure that they contain valid
     directives and data definitions.  If you are upgrading from a previous
     version of Nagios, you should be aware that some variables/definitions
     may have been removed or modified in this version.  Make sure to read
     the HTML documentation regarding the config files, as well as the
     'Whats New' section to find out what has changed.

我的webpages.cfg文件如下所示：

#########################################
#                                       #
#                Hosts                  #
#                                       #
#########################################

define host {
        use             generic-host
        host_name       myhost.com
        alias           myhost
        check_interval  1
        address         xxx.xxx.xxx.xxx
}

#########################################
#                                       #
#               Services                #
#                                       #
#########################################
define service {
            host_name                       myhost.com
            service_description             URL: myhost.com
            check_command                   check_http_url!http://myhost.com
            max_check_attempts              5
            check_interval                  3
            retry_interval                  1
            check_period                    24x7