오랜만에 서버 들어가서 데몬 체크하는데 이상한 게 있어서 확인

[root@host-10-101-0-10 log]# netstat -nlpt
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name   
tcp        0      0 0.0.0.0:3306            0.0.0.0:*               LISTEN      768/mysqld         
tcp        0      0 0.0.0.0:5355            0.0.0.0:*               LISTEN      24069/systemd-resol
tcp        0      0 0.0.0.0:587             0.0.0.0:*               LISTEN      856/sendmail: accep
tcp        0      0 0.0.0.0:143             0.0.0.0:*               LISTEN      855/dovecot        
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      750/nginx: master p
tcp        0      0 0.0.0.0:53              0.0.0.0:*               LISTEN      912/pdns_server    
tcp        0      0 0.0.0.0:25              0.0.0.0:*               LISTEN      856/sendmail: accep
tcp        0      0 0.0.0.0:53690           0.0.0.0:*               LISTEN      644/svnserve       
tcp        0      0 0.0.0.0:443             0.0.0.0:*               LISTEN      750/nginx: master p
tcp        0      0 0.0.0.0:5022            0.0.0.0:*               LISTEN      630/sshd           
tcp6       0      0 :::5355                 :::*                    LISTEN      24069/systemd-resol  

확인해보니까 systemd-resolved 데몬이 구동되어 있던 상황. 아마 얼마전에 yum update 영향을 받은 듯.

설정을 수정하려면 /etc/systemd/resolve.conf을 건드려야 하는 듯. 매뉴얼은 man resolved.conf 명령어를 이용하여 확인.

일단 나는 안쓰므로 해제.

systemctl disable systemd-resolved

systemctl stop systemd-resolved