DigitalOcean: Puma 서비스가 더 이상 systemctl에서 작동하지 않습니다.

내 DigitalOcean 환경이 뚜렷한 이유 없이 충돌했습니다. 안타깝게도 서비스를 시작할 수 없어 pumaRails 앱이 완전히 실패합니다.

서비스를 시작하는 데 사용하는 명령은 다음과 같습니다.

systemctl start puma

내가 잘 모르는 신비한 오류가 있습니다.

Job for puma.service failed because a configured resource limit was exceeded. See "systemctl status puma.service" and "journalctl -xe" for details.

systemctl status puma.service

생산하다:

● puma.service - Puma HTTP Server
   Loaded: loaded (/etc/systemd/system/puma.service; enabled; vendor preset: enabled)
   Active: inactive (dead) (Result: resources) since Wed 2018-04-11 17:45:20 EDT; 6min ago

sudo journalctl -xe:

Subject: Unit puma.service has failed
Defined-By: systemd
Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel

Unit puma.service has failed.

Apr 11 17:56:30 app-master sshd[1124]: Invalid user wp from <some ip>
Apr 11 17:56:30 app-master sshd[1124]: input_userauth_request: invalid user wp [preauth]
Apr 11 17:56:30 app-master sshd[1124]: pam_unix(sshd:auth): check pass; user unknown
Apr 11 17:56:30 app-master sshd[1124]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=<some ip>
Apr 11 17:56:32 app-master sshd[1124]: Failed password for invalid user wp from 114.32.120.181 port 39504 ssh2
Apr 11 17:56:33 app-master sshd[1124]: Received disconnect from <some ip> port 39504:11: Normal Shutdown, Thank you for playing [preauth]
Apr 11 17:56:33 app-master sshd[1124]: Disconnected from <some ip> port 39504 [preauth]
Apr 11 17:56:37 app-master sshd[1126]: Connection closed by <some ip> port 49964 [preauth]
Apr 11 17:56:41 app-master sshd[1128]: Did not receive identification string from 103.89.91.78
Apr 11 17:56:48 app-master sshd[1129]: fatal: Unable to negotiate with 103.89.91.78 port 51781: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1 [preauth]
Apr 11 17:56:49 app-master sshd[1131]: Did not receive identification string from 103.89.91.78
Apr 11 17:56:50 app-master sshd[1132]: fatal: Unable to negotiate with 103.89.91.78 port 55251: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1 [preauth]
Apr 11 17:56:53 app-master sshd[1134]: fatal: Unable to negotiate with 103.89.91.78 port 60600: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1 [preauth]
Apr 11 17:56:54 app-master sshd[1136]: Did not receive identification string from 103.89.91.78
Apr 11 17:57:06 app-master sshd[1137]: Invalid user wp from <some ip>
Apr 11 17:57:06 app-master sshd[1137]: input_userauth_request: invalid user wp [preauth]
Apr 11 17:57:06 app-master sshd[1137]: pam_unix(sshd:auth): check pass; user unknown
Apr 11 17:57:06 app-master sshd[1137]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=<some ip>
Apr 11 17:57:08 app-master sshd[1137]: Failed password for invalid user wp from 114.32.120.181 port 41202 ssh2
Apr 11 17:57:08 app-master sshd[1137]: Received disconnect from <some ip>port 41202:11: Normal Shutdown, Thank you for playing [preauth]
Apr 11 17:57:08 app-master sshd[1137]: Disconnected from <some ip> port 41202 [preauth]
Apr 11 17:57:10 app-master sshd[1139]: Connection closed by <some ip> port 34578 [preauth]
Apr 11 17:57:15 app-master sshd[1141]: Did not receive identification string from 103.89.91.78
Apr 11 17:57:42 app-master sshd[1142]: Invalid user wp from <some ip>
Apr 11 17:57:42 app-master sshd[1142]: input_userauth_request: invalid user wp [preauth]
Apr 11 17:57:42 app-master sshd[1142]: pam_unix(sshd:auth): check pass; user unknown
Apr 11 17:57:42 app-master sshd[1142]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=<some ip>
Apr 11 17:57:44 app-master sshd[1142]: Failed password for invalid user wp from 114.32.120.181 port 42864 ssh2
Apr 11 17:57:44 app-master sshd[1142]: Received disconnect from <some ip> port 42864:11: Normal Shutdown, Thank you for playing [preauth]
Apr 11 17:57:44 app-master sshd[1142]: Disconnected from <some ip> port 42864 [preauth]
Apr 11 17:58:11 app-master sshd[1144]: Did not receive identification string from <some ip>
Apr 11 17:58:17 app-master sudo[1147]:   <hidden> : TTY=pts/0 ; PWD=/home/<hidden> ; USER=root ; COMMAND=/bin/journalctl -xe
Apr 11 17:58:17 app-master sudo[1147]: pam_unix(sudo:session): session opened for user root by <hidden>(uid=0)

여기서 문제가 무엇인지 전혀 모르겠습니다. 나는 평생 사용자를 본 적이 없어서 wp그것이 무엇인지조차 모릅니다. 왜 갑자기 DigitalOcean Droplet에서 퓨마를 더 이상 실행할 수 없는지 이해가 되지 않습니다.