Justin Silver Blog

Fix pkg on FreeNAS 11.2

I upgraded to FreeNAS 11.2, and then was unable to run pkg with an error about being unable to find the local repo file. pkg: Repository local load error: access repo file(/var/db/pkg/repo-local.sqlite) failed: No...

Wildcard SSL Certs: Let’s Encrypt & Cloudflare

My servers have been using free Let’s Encrypt SSL certificates for some time now, but I was really excited to hear about support for wildcard SSL certificates in 2018. Wildcards are now available thus...

Syscoin + ZMQ + Node.js = Realtime Blockchain Updates!

Realtime Updates from the Syscoin Blockchain You can use the ZMQ topic message queues in Syscoin to receive realtime updates for your application. Using in conjunction with syscoin-core to blockchain-enable your applications in no...

Syscoin + Node.js = Blockchain Apps!

Getting Started You will need to have syscoind or Syscoin Core Qt running on your system and have node/npm installed. If you don’t have Node.js I recommend installing it via nvm. Syscoin Configuration First...

Syscoin 3 Alias Creation

Or, How I Learned To Stop Worrying and Love the Command Line Before we start – please read this post fully! It will only take a few minutes, and you will feel much more...

MongoDB Clustering for CentOS 7

A quick guide to installing a MongoDB cluster on CentOS 7 hosts. Network Configuration Install MongoDB First make sure the system is up to date and install the MongoDB binaries via the Mongo yum...