Linux

A collection of 44 posts
DevOps

Remote Docker Instance

I'm building a multi node Docker Swarm cluster and want to connect to it from my local desktop. I'd like to use my local development tools to build all of my Docker related files and push them up to the cluster. Note, this is an unauthenticated, full access, http (not https) configuration. It is to show a remote setup. I'm starting simple. The next post will be about securing this config. First my setup: * 3 docker nodes, docker1.example.com, docker2.example.com and docker3.example.com. * T
2 min read
Operations

Wake-on-lan, windows 10 and Linux

Well, after having wake-on-lan running and working great (other than the stupid sleeping after a couple minutes issue) I decided I would do a quick post on how I got it working and my setup, it was actually very easy once I found the right package. First, my overall setup. Linux/Ubuntu firewall, running iptables. 2 VLans, one for everything else. My desktop is on the client VLAN and the linux firewall acts as the gateway between both VLans and the internet. My solution, SSH into the firewall
1 min read
Raspberry Pi

Raspberry Pi 2 Cross Compile kernel on Ubuntu

Since a step by step guide for cross compiling a kernel and installing it on the pi2 is pretty much non-existent, here is my guide. Ok, first step, install Ubuntu. You will need to be able to mount the SD card for the Pi, so doing it in HyperV isn't going to work, you can't mount SD Cards as block devices. I didn't try VMWare or VirtualBox, I just used an old laptop, worked great as it had an SD Card slot in it. Once you have Ubuntu installed and set up, update it to the latest and greatest, n
3 min read
Linux

ZFS, 3ware 9650 and performance

Hey everyone, here's the plan, migrate all of my VM's to a data store on my NFS server, I've been wanting to do this for a while, to get off of the dedicated local storage, and move to shared. Big benefits of doing so, one of which is multiple hosts can access the same VM's for redundancy. But, I initially set up using ZFS. I went with ZFS for compression and data deduping. Turns out, deduping is a huge memory hog. Compression is a huge CPU hog (not a shocker). So, when I first created them, doi
1 min read
Linux

"no network provider accepted the given network path"

I ran into a problem where I had one 2003r2 server that couldn't access the Linux samba servers but it could access the other windows server with no problems. I was using share level security in the smb.conf file. This worked fine up until about a month ago, only found out today because we needed to get something off of the backup server, which, well, since it couldn't access it, there is no backups...besides the point. Anyways. Here's the steps that DID NOT WORK * Reboot (should always be eve
1 min read