VMware ESXi 6.5 – Replacing the default SSL/TLS certificates

One of my weird hobbies is installing legitimate SSL certificates EVERYWHERE. Here’s steps for replacing the default self-signed garbage SSL certificates you get out of the box with VMware ESXi:

Steps

  1. Get your SSL cert, obviously. You’ll need a .key file and a .crt. (If you need help at this stage, take a look at my SSL cert management scripts on github.)
  2. Enable SSH access to your ESXi box. Login as root over ssh. (If you don’t know about this, perhaps this whole process is not for you at this time)
  3. From your root ssh session to your ESXi box, follow these steps:

    cd /etc/vmware/ssl
    mv rui.crt orig.rui.crt
    mv rui.key orig.rui.key
  4. Use vi to open new rui.key and rui.crt files and paste in your own crt and key files.
  5. Restart services so your certs are in-play:

    /etc/init.d/hostd restart
    /etc/init.d/vpxa restart

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DeltaFlyer Episode II: Prime Line Rollers

DeltaFlyer Episode II was originally posted to hackaday.io. I’ve mirrored it here for my own purposes.

For the Delta Flyer’s maiden voyage, I opted to go cheap and use Prime Line rollers (referenced in an earlier log). They’re fairly inexpensive and I didn’t have much grief finding them at a couple different local stores. They definitely have slop in them, so they’re not really a good choice and probably go from rough to terrible as print speed is increased. Episode II here is to illustrate how well these actually work.

I found that I could get passable motion. I ultimately replaced the Prime Line rollers with Delrin rollers. I was stunned to find the first prints out of the Delrin’s looked exactly the same as the Prime Line wheels. This led to eventually find my main source of error was my print bed could move during the print. Therefore, I’m not really sure what the quality limit on the Prime Line rollers really is. My guess is you could get pretty damn good but if you tried to print fast, the slop in the bearings would become intolerable.

My Photo Album for Episode II is here.