Hello,

Please kindly check through process that I copy from my two vps(vps for running DNS-Only.)
Server 1

PID USER PR NI VIRT RES SHR S CPU MEM TIME COMMAND
1 root 15 0 10364 732 612 S 0.0 0.1 0:41.37 init Kill Process
1135 root 15 -4 12632 676 356 S 0.0 0.1 0:00.00 udevd Kill Process
1229 root 24 0 38868 612 480 S 0.0 0.1 0:00.00 brcm_iscsiuio Kill Process
1501 root 15 0 5924 616 492 S 0.0 0.1 0:05.86 syslogd Kill Process
1555 root 15 0 62652 1216 652 S 0.0 0.2 0:00.00 sshd Kill Process
1567 root 25 0 65952 1388 1148 S 0.0 0.3 0:00.00 mysqld_safe Kill Process
1631 mysql 15 0 146m 19m 4852 S 0.0 3.9 6:38.88 mysqld Kill Process
1947 root 15 0 74864 1160 580 S 0.0 0.2 0:05.50 crond Kill Process
2027 root 33 18 23872 2548 680 S 0.0 0.5 0:01.74 cpanellogd Kill Process
13856 root 15 0 36392 5616 1664 S 0.0 1.1 0:00.38 cphulkd Kill Process
17537 root 15 0 42464 8052 2056 S 0.0 1.5 0:09.31 tailwatchd Kill Process
17892 mailnull 15 0 64288 3284 2616 S 0.0 0.6 0:00.17 exim Kill Process
17971 root 15 0 140m 48m 2756 S 0.0 9.6 1:31.21 spamd Kill Process
18027 root 18 0 140m 47m 1020 S 0.0 9.2 0:00.02 spamd Kill Process
18028 root 18 0 140m 47m 1000 S 0.0 9.2 0:00.00 spamd Kill Process
18256 root 15 0 34940 5984 1368 S 0.0 1.1 0:07.80 queueprocd Kill Process
18327 root 15 0 87648 11m 1392 S 0.0 2.2 1:13.78 cpsrvd-ssl Kill Process
21511 root 18 0 124m 22m 1404 S 0.0 4.3 0:02.87 lfd Kill Process
26017 root 18 0 12620 1080 840 R 0.0 0.2 0:00.00 top Kill Process
26330 named 20 0 91300 6140 2052 S 0.0 1.2 0:01.29 named Kill Process


Server 2

PID USER PR NI VIRT RES SHR S CPU MEM TIME COMMAND
1 root 15 0 10364 728 612 S 0.0 0.1 0:46.76 init Kill Process
1124 root 15 -4 12632 680 356 S 0.0 0.1 0:00.00 udevd Kill Process
1222 root 20 0 38868 608 480 S 0.0 0.1 0:00.00 brcm_iscsiuio Kill Process
1527 root 15 0 5924 620 492 S 0.0 0.1 0:05.29 syslogd Kill Process
1591 root 15 0 62652 1216 652 S 0.0 0.2 0:00.00 sshd Kill Process
1602 root 15 0 21660 928 716 S 0.0 0.2 0:00.00 xinetd Kill Process
1614 root 25 0 11944 1420 1168 S 0.0 0.3 0:00.00 mysqld_safe Kill Process
1685 mysql 15 0 147m 19m 4852 S 0.0 3.9 4:59.51 mysqld Kill Process
1987 root 15 0 20888 1176 580 S 0.0 0.2 0:06.05 crond Kill Process
3086 root 33 18 23876 2552 680 S 0.0 0.5 0:02.02 cpanellogd Kill Process
7648 root 18 0 73512 22m 1392 S 0.0 4.3 0:07.96 lfd Kill Process
14088 root 15 0 36384 5616 1664 S 0.0 1.1 0:00.21 cphulkd Kill Process
19533 root 15 0 42440 8044 2056 S 0.0 1.5 0:08.67 tailwatchd Kill Process
19900 mailnull 15 0 64280 3276 2612 S 0.0 0.6 0:00.15 exim Kill Process
19986 root 18 0 140m 48m 2756 S 0.0 9.6 0:56.44 spamd Kill Process
20024 root 18 0 140m 47m 1020 S 0.0 9.2 0:00.01 spamd Kill Process
20025 root 18 0 140m 47m 1000 S 0.0 9.2 0:00.01 spamd Kill Process
20205 root 15 0 34944 5984 1368 S 0.0 1.1 0:10.05 queueprocd Kill Process
20275 root 18 0 87648 11m 1392 S 0.0 2.2 0:58.48 cpsrvd-ssl Kill Process
24227 root 18 0 12620 1076 840 R 0.0 0.2 0:00.00 top Kill Process
26326 named 18 0 89984 5584 2044 S 0.0 1.1 0:01.08 named Kill Process


I would like to ask for idea that. I wonder why DNS-Only need to start service like exim, spamd, and mysqld?

does anyone help me to answer this question?

thanks for your answer and explaination.

Best Regards,
Steve.

I wonder why DNS-Only need to start service like exim, spamd, and mysqld?

Because thats all needed for DNSONLY to work, However you can disable MYSQL and save some Ram :)

Hello,

Many thanks for sharing your best knowledge.

Regards,
Steve.