Can I disable Nameservers?

Discussion in 'Linux VPS/Dedicated - cPanel' started by richard_s, Aug 12, 2018.

  1. richard_s

    richard_s New Member

    DNS for all my domains is though Cloudlfare and it's been working without any issues for the better part of a year. Do I need nameservers and DNS zones?

    Email is handled through the hostname for all domains. I don't use any of the mail., ftp. etc. subdomains so the records are pretty simple.


    Sample record on Cloudflare for the main domain used in the hostname. my1.hostname.com is the host name and the IP is 0.0.0.1 for the purposes of posting it here.
    Code:
    A my1 points to 0.0.0.1
    A hostname.com points to 0.0.0.1
    CNAME www is an alias of hostname.com
    MX hostname.com  mail handled by my1.hostname.com
    TXT cp1 v=spf1 mx a ip4:0.0.0.1 -all
    TXT default._domainkeyv=DKIM1; k=rsa;.............
    TXT hostname.com v=spf1 mx ip4:0.0.0.1 mx:my1.hostname.com -all
    
    Different domain on another IP:
    Code:
    A otherdomain.com points to 0.0.0.2
    CNAME www is an alias of otherdomain.com
    MX otherdomain.com  mail handled by my1.hostname.com
    TXT otherdomain.com v=spf1 mx ip4:0.0.0.1 mx:my1.hostname.com -all
    TXT default._domainkey v=DKIM1; k=rsa.........
    

    Have I assumed correctly I only need the A record on the server for the hostname and that is handled separately? Any gotchas such as DKIM?
     
  2. richard_s

    richard_s New Member

    Just to clarify... on the server. One reason I want to disable them is because named is consuming about 30MB of RAM and I'd like to free it up.
     
  3. KH-JonathanKW

    KH-JonathanKW Technical Support Staff Member

    I wouldn't disable named. 30mb is minuscule compared to the other services such as clamd (100-300mb), spamd(100-300mb).

    If this is an MVPS service; named is semi-required as it handles local caching which cPanel and CentOS Repos rely on in order for it to poll and receive the updates as initiated by the cPanel upcp service.

    Other low-footprint options such as mydns or nds are unavailable. Our MVPS line enforces resolve.conf, any changes to it would be reverted upon reboot.

    This is correct; everything else looks good.
     
  4. richard_s

    richard_s New Member

    My mistake, that should be 300MB. It's right behind clamd in resources which uses the most. This is a VPS2 with a little extra memory, I'm upgrading to SSD shortly.

    Still required for VPS2?
     
  5. KH-JonathanKW

    KH-JonathanKW Technical Support Staff Member

    It's for all VPS lines of service, legacy and current.
     
  6. Doug Ryan

    Doug Ryan New Member

    30mb is minuscule compared to the other services such as clamd (100-300mb), spamd(100-300mb)

    I don't even get this. clamd and spamd are email service blockers. I'd like to disable named, and email altogether. I don't need the headache of email anything. All of my clients use gmail anyways, and, I use cloudflare as well.

    After 20 years of working this mess, I'd like to see a real answer on dealing with this specific issue. Eliminate bs services that take up server resources for no reason.
     
  7. Dan

    Dan Moderator

    Hey @Doug Ryan!

    If you don't have anyone using email from your server why don't you just uninstall spamd and clamd? As you said that's a lot of resources being eaten up and if there's no active email accounts...
     

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