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Greetings from a Debian user

Discussion in 'Introductions' started by Tracy Perry, Aug 25, 2014.

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  1. Tracy Perry

    Tracy Perry Active Member

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    I use Debian on all my VPS's (I have a dedicated server running ProxMox) and decided to give centOS a try to see how it compares on my Linux forum. Just moved it over, and compared to Debian this is going to be a a learning experience. Performance between the centOS install and my Debian one is about the same (even with pagespeed enabled) but I will probably keep the forum on centOS since I get several requests to help people out and they happen to use centOS instead of Debian.
     
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  2. eva2000

    eva2000 Administrator Staff Member

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  3. Tracy Perry

    Tracy Perry Active Member

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    Who me? I'm just a lurker that is a Linux illiterate. ;)

    I've been running it for a while (started back when I was with ServerComplete for my dedicated server). Ended up getting a decent deal on a dual L5620 with 96GB RAM and 8 1TB SATA enterprise HD's in RAID 10 so I moved it over to there now.

    Originally I installed it one the VPS I had set up... but saw did not see that Centmin Mod was stable for it so I removed it and regressed back to 6.5 (wasn't happy about doing that but I needed the site to be stable since it is a live site).
     
  4. eva2000

    eva2000 Administrator Staff Member

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    Yeah CentOS 7.0 has too many minor and major changes to it that really make it hard to go live production usage. Well until we all figure out those changes that is :)

    Linux illiterate huh, so you won't find yourself at home in Web hosting & System Administration hehe
     
  5. Tracy Perry

    Tracy Perry Active Member

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    Main reason I needed to do it was I get a lot of help requests from people, and they are on centOS.
    The one thing I will NOT do is install cPanel on anything I own. I don't (and won't) administer a server from cPanel. I like getting my hands dirty and to often I see those that use it at a total loss when something it can't control goes wrong.

    I'll be one of the first to tell you I'm a neophyte at this aspect of it. I've only been doing it about a year (at this level - before I had exposure to an intranet with a LOT of linux work and even more AS/400 in there). I'm fairly lucky in that I can pick this type of stuff up pretty quickly. :bookworm:
     
  6. eva2000

    eva2000 Administrator Staff Member

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    Yeah I remember your love for Cpanel :D I use Cpanel/WHM and Centmin Mod and that's it. 3 out of 20 servers = Cpanel/WHM and 17 out of 20 = Centmin Mod Nginx :)

    More of my clients are on WHM/Cpanel and CentOS though. But some are starting to use Centmin Mod :)

    Promox or any virtualization environment definitely helps with learning Linux stuff. I use Virtualbox and VMWare on local PCs and range of Xen, KVM, OpenVZ for online VPSes.
     
  7. Tracy Perry

    Tracy Perry Active Member

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    I played with ProxMox and really fell in love with it, so much so that I do the yearly 2 processor community subscription.
    VirtualBox is used sometimes on my Mac - but I have the benefit of having (now) 4 true servers sitting in my computer room (about to get a 5th' that I'm probably going to colo with Quadranet in Dallas). Nothing like having a real box to play with.
    I can deal with WHM/cPanel, but prefer not to. I hate how it dumbs everything down. All my Debian boxes are controlled via SSH logins and Centmin Mod is installed on one of the centOS boxes and OLS (OpenLiteSpeed) on the other. Right now I'm burning out a centOS 7 VPS to play with, but I doubt I'll move my site over to it yet.
     
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  8. eva2000

    eva2000 Administrator Staff Member

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  9. Matt

    Matt Moderator Staff Member

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    Yeah, just got my first Proxmox server set up last night. Only did it because I've got a new dedi for my own sites, and means I can use my VPS cpanel licence for my shared hosting (and spin up a few smaller VPSs to play with).
     
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  10. Tracy Perry

    Tracy Perry Active Member

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    Oh well @eva2000, you forced me into it. I just moved my Linux site over to centOS 7 using the Centmin Mod BETA. So far - so good. Only thing is I really HATE having to do all the openDKIM stuff all over again.:banghead:
     
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  11. eva2000

    eva2000 Administrator Staff Member

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    nice, you move fast (y)
     
  12. Tracy Perry

    Tracy Perry Active Member

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    Had to play some Battlefield 4 with my son online or I would have had it done sooner.:p
     
  13. eva2000

    eva2000 Administrator Staff Member

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    well Centmin Mod includes 3rd party repos with updated OpenDKIM which should help

    CentOS 6.5
    Code:
    yum -q list opendkim --enablerepo=epel-testing --disableplugin=priorities        
    Available Packages
    opendkim.x86_64   2.9.2-2.el6   epel-testing
    
    CentOS 7
    Code:
     yum -q list opendkim --disableplugin=priorities
    Available Packages
    opendkim.x86_64   2.9.2-2.el7   epel
    

    haha :)
     
  14. Tracy Perry

    Tracy Perry Active Member

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    Oh, it's already up and fully running (IPV6 included) and the mail stuff is working just fine (installed dovecot to use for local bounce checking by XenForo). We'll see how it does. I still have my Debian VPS setting turned off in the background if problems arise (but they would have to be serious ones as I like fixing problems :nailbiting: ).
    Biggest slow down I get is from all the facebook/google/twitter crud that I have enabled - along with a few sidebar add-ons that use js to perform functions with. Just a "smidgen" faster than my Debian setup (which did not use PageSpeed on it).

    It's not the "getting" of the openDKIM related stuff.. it's the stinking configuring of it. I ALWAYS forget something (I have a checklist, but forget to use it normally - do it from my memory).
     
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  15. eva2000

    eva2000 Administrator Staff Member

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    Yeah looked at the list of steps for configuring opendkim - quite long indeed. My forums mail is via Mandrill so they have DKIM configuration all done already just need the DNS changes at my end = much easier :)

    As to Centmin Mod ngx_pagespeed and Xenforo might want to check out some pagespeed.conf tuning at Nginx PageSpeed - This forum's pagespeed.conf | Centmin Mod Community and for troubleshooting Nginx PageSpeed - Nginx Pagespeed Troubleshooting steps | Centmin Mod Community

    The ngx_pagespeed image optimisation filters are disabled out of the box for Centmin Mod Nginx ngx_pagespeed, so the above pagespeed.conf has settings to enable them. Some of the benefits Nginx PageSpeed - Benefits of ngx_pagespeed | Centmin Mod Community
     
  16. Tracy Perry

    Tracy Perry Active Member

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    Where's the fun in easier.. the gritty,dirty work is the fun stuff. :p
    I've got my local systems set up to deliver mail, and none get marked as SPAM that I can see now. It took a while - the biggest headache was Hotmail. Contacted them via email and their reply was "Everything looks fine and your mail should be going through". Told 'em no poop Sherlock - but it's not. They finally added an exception in for my CIDR and even those go fine now.

    Have reviewed (and am using) most of what I found in reference to it and XenForo. I'm just not seeing that much of an increase overall - but I had tweaked the Debian install over a period of 6 months so maybe as I tweak the CentOS one it will improve.
     
  17. eva2000

    eva2000 Administrator Staff Member

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    Hehe, I just use Google App emails + SPF for perfect delivery heh.

    For ngx_pagespeed enabling the console and message log as per Nginx PageSpeed - Nginx Pagespeed Troubleshooting steps | Centmin Mod Community will allow you to see if pagespeed is working as intended. But it also depends on your style used with your forum.

    If you really want to compare differences use webpagetest.org and check your speedindex sources for your site - see Speed Index - WebPagetest Documentation

    Gtmetrix equivalent is enabling create video function, so you can generate the filmstrip view to see where you initial percieved visual render time is. This is also semi equivalent to Google Analytics's metric for Avg Document Interactive Page Load time (DomInteractive).

    Using the naked eye for comparisons won't do much.

    For example

    webpagetest_chacha20.png
    webpagetest_chacha20_2.png

    GA

    ga_dashboard_avpagedom_trends_02.png
     
  18. Tracy Perry

    Tracy Perry Active Member

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    Here is what I get (gtmetrix)
    Screen Shot 2014-08-25 at 11.46.29 PM.png
    WebPageTest
    Screen Shot 2014-08-26 at 12.00.37 AM.png

    Like I said... still got to do some more tweaking, especially considering I'm running on HTTPS for the site.
     
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  19. eva2000

    eva2000 Administrator Staff Member

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    yeah just keep on documentation the gtmetrix and webpagetest results as you tweak and tune :D
     
  20. Tracy Perry

    Tracy Perry Active Member

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    Texas
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    Amazing what just ONE line change will do (the Cache Static Content is the dang Google/Twitter/Facebook crud):


    Screen Shot 2014-08-26 at 12.11.15 AM.png