high CPU on domain mapping plugin

I have a very high CPU from the domein mapping plugin.

85.17.252.206 - - [23/Nov/2016:10:29:38 +0100] "GET /wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=ab5a1e95d9e0232d793af51dcd7c50bf78a0692e HTTP/1.1" 500 - "http://bimql.org/wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=ab5a1e95d9e0232d793af51dcd7c50bf78a0692e" "WordPress/4.6.1; http://bimql.org"
85.17.252.206 - - [23/Nov/2016:10:29:42 +0100] "GET /wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=b7519a2e41ab6f886f7c9f18806c4fada1186d42 HTTP/1.1" 500 - "http://bimql.org/wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=b7519a2e41ab6f886f7c9f18806c4fada1186d42" "WordPress/4.6.1; http://bimql.org"
85.17.252.206 - - [23/Nov/2016:10:29:42 +0100] "GET /wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=60db3ac206195b232e6d15cec6ac7aaeaa4d03bb HTTP/1.1" 500 - "http://bimql.org/wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=60db3ac206195b232e6d15cec6ac7aaeaa4d03bb" "WordPress/4.6.1; http://bimql.org"
85.17.252.206 - - [23/Nov/2016:10:29:39 +0100] "GET /wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=64cb45128fb37fc9bb471cc4b462da535f769b1e HTTP/1.1" 500 - "http://bimql.org/wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=64cb45128fb37fc9bb471cc4b462da535f769b1e" "WordPress/4.6.1; http://bimql.org"
85.17.252.206 - - [23/Nov/2016:10:29:40 +0100] "GET /wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=f2e04797ed9b422cefe261906832c10f1083bc25 HTTP/1.1" 500 - "http://bimql.org/wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=f2e04797ed9b422cefe261906832c10f1083bc25" "WordPress/4.6.1; http://bimql.org"
85.17.252.206 - - [23/Nov/2016:10:29:36 +0100] "GET /wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=b7c0ffe4b3e8c2b574f34a2f9fcd277cf4d88a77 HTTP/1.1" 500 - "http://bimql.org/wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=b7c0ffe4b3e8c2b574f34a2f9fcd277cf4d88a77" "WordPress/4.6.1; http://bimql.org"
85.17.252.206 - - [23/Nov/2016:10:29:37 +0100] "GET /wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=b7c0ffe4b3e8c2b574f34a2f9fcd277cf4d88a77 HTTP/1.1" 500 - "http://bimql.org/wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=b7c0ffe4b3e8c2b574f34a2f9fcd277cf4d88a77" "WordPress/4.6.1; http://bimql.org"
85.17.252.206 - - [23/Nov/2016:10:29:43 +0100] "GET /wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=b7519a2e41ab6f886f7c9f18806c4fada1186d42 HTTP/1.1" 500 - "http://bimql.org/wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=b7519a2e41ab6f886f7c9f18806c4fada1186d42" "WordPress/4.6.1; http://bimql.org"
85.17.252.206 - - [23/Nov/2016:10:29:33 +0100] "GET /wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=ff48ae5557f5ecde2a9a79d33664d2d98c683950 HTTP/1.1" 500 - "http://bimql.org/wp-admin/admin-ajax.php?action=domainmapping_heartbeat_check&check=ff48ae5557f5ecde2a9a79d33664d2d98c683950" "WordPress/4.6.1; http://bimql.org"

Had the same issue 4 weeks ago on some domains that where invalid. I removed those domains and the issue was fixed. The bimql.org domain was valid back then. It seemed to be unvalid now causing the high traffic and CPU use on the domain.

  • Predrag Dubajic

    Hey Leon,

    Hope you're doing well today :slight_smile:

    I tried to check your network and the troubling mapped domain and I was unable to access any of those, have you checked that your server is working properly and that there are no hiccups going on?

    Could you try going to your Network admin, and under Settings > Domain Mapping try disabling "Verify domain's DNS settings" option to see if the CPU loads drops to you after that.

    Best regards,
    Predrag

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