☰

(Aviso) O endereço IP 'XXX.XXX.XX.XXX' não pôde ser resolvido: Nome ou serviço desconhecido

tag-icon • tag-icon mysql mariadb
(Aviso) O endereço IP 'XXX.XXX.XX.XXX' não pôde ser resolvido: Nome ou serviço desconhecido

Eu uso Mariadb-10.3 em 127.0.0.1:3310. Os sites estão funcionando corretamente, está tudo bem. Mas notei essas conexões nos logs:

200812 21:16:31 [Warning] IP address '195.54.167.225' could not be resolved: Name or service not known
200813  1:44:22 [Warning] IP address '177.156.63.4' has been resolved to the host name '177.156.63.4.dynamic.adsl.gvt.net.br', which resembles IPv4-address itself.
200813  3:03:27 [Warning] IP address '51.103.146.73' could not be resolved: Name or service not known
200813  3:24:40 [Warning] IP address '20.52.50.38' could not be resolved: Name or service not known
200813 15:01:29 [Note] Hostname 'worker-13.sfj.censys-scanner.com' does not resolve to '192.35.168.220'.
200813 15:01:29 [Note] Hostname 'worker-13.sfj.censys-scanner.com' has the following IP addresses:
200813 15:01:29 [Note]  - 192.35.168.208

200813 18:14:01 [Warning] IP address '170.130.187.30' could not be resolved: Name or service not known
200813 21:14:05 [Warning] IP address '64.227.86.82' could not be resolved: Name or service not known
200813 21:39:55 [Note] Hostname '186-210-095-134.xd-dynamic.algarnetsuper.com.br' does not resolve to '186.210.95.134'.
200813 21:39:55 [Note] Hostname '186-210-095-134.xd-dynamic.algarnetsuper.com.br' has the following IP addresses:
200813 21:39:55 [Note]  - 195.85.231.19

200813 23:11:43 [Warning] IP address '92.63.194.76' could not be resolved: Name or service not known
200814  1:17:00 [Warning] IP address '79.152.33.82' has been resolved to the host name '82.red-79-152-33.dynamicip.rima-tde.net', which resembles IPv4-address itself.
200814 13:18:19 [Warning] IP address '118.193.28.58' could not be resolved: Name or service not known
200814 18:47:42 [Note] Hostname '3c2e01.rederatural.com' does not resolve to '104.140.188.10'.
200814 18:47:42 [Note] Hostname '3c2e01.rederatural.com' has the following IP addresses:
200814 18:47:42 [Note]  - 212.32.237.101

200814 20:25:51 [Note] Hostname '683b217.rederatural.com' does not resolve to '104.140.188.6'.
200814 20:25:51 [Note] Hostname '683b217.rederatural.com' has the following IP addresses:
200814 20:25:51 [Note]  - 212.32.237.90

200814 22:43:46 [Note] Hostname 'zg-0708b-125.stretchoid.com' does not resolve to '192.241.238.224'.
200814 22:43:46 [Note] Hostname 'zg-0708b-125.stretchoid.com' has the following IP addresses:
200814 22:43:46 [Note]  - 178.210.89.119

200814 23:08:48 [Note] Hostname 'zg-0708a-49.stretchoid.com' does not resolve to '192.241.212.195'.
200814 23:08:48 [Note] Hostname 'zg-0708a-49.stretchoid.com' has the following IP addresses:
200814 23:08:48 [Note]  - 178.210.89.119

200814 23:40:20 [Warning] IP address '80.82.78.85' could not be resolved: Name or service not known
200815  2:01:33 [Warning] IP address '183.136.225.44' could not be resolved: Name or service not known

Depois disso, o servidor mysql está desabilitado e tenho que reiniciá-lo. você pode me dizer o que é isso? Tentativa de hacking ou algo mais?

Eu li em algum lugar e em /etc/my.cnf adicionei skip_name_resolve = 1. Ajuda?

Responder1

Para cada conexão recebida, o MariaDB está tentando fazer uma pesquisa de DNS. Como você escreveu na pergunta, adicionar skip-name-resolve = onimpedirá /etc/my.cnfa pesquisa.

O fato de você estar recebendo essas tentativas de conexão significa que seu banco de dados está exposto à Internet. Seria altamente recomendado não permitir o acesso público a essa porta, por exemplo, limitar a interface de loopback e/ou usar o firewall para permitir apenas IPs da lista branca.

informação relacionada