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Lab Config

Resources allocated / accessible in the B203 lab.

Go Setup

Installing Go Locally

Grab a local copy of the Go compiler

mkdir -p $HOME/local/go1.7.4
cp /seng/seng462/group3/local/go1.7.4/* $HOME/local/go1.7.4/

Set up your workspace

mkdir $HOME/go

Export the workspace. Add this to your .bashrc

GOROOT=$HOME/local/go1.7.4
GOPATH=$HOME/go

export GOROOT
export GOPATH

PATH=$PATH:$GOROOT/bin
export PATH

Make a test file hello.go

mkdir -p $GOPATH/src/github.com/YOUR_GH/hello
touch $GOPATH/src/github.com/YOUR_GH/hello/hello.go
package main

import "fmt"

func main() {
  fmt.Println("Hello world!")
}

Compile, install and run

go install github.com/YOUR_GH/hello
$GOPATH/bin/hello

VMs

We'll (eventually) be deploying this to the lab inside a VM with docker. Workflow is to clone a pre-configured VM and do all work inside the clone. This creates a standard deployment environment. The master VM is a minimal installation of CentOS with networking, Vim and Docker installed.

Local VMs

To work on a VM you'll have to clone an appropriate base image. The base_with_batteries image is the current master. It includes:

  • Permissive networking
  • Vim
  • Docker 1.12.5
  • git 1.8.3.1
  • golang 1.7.4 ($GOPATH = /go)
  • redis-cli 3.2

The login:pass is root:seng462.

GUI

  1. Go to /seng/seng462/group3/VMs/
  2. Open ./${VM_base}/${VM_base}.vbox. VirtualBox Manager will open.
  3. On the base image: Right-click > Clone
  • Rename the machine, Next >
  • Choose "Full clone", Clone
  • New VM lives at $YOUR_VB_HOME/${whatever you called the clone}
  1. Remove the base image from VirtualBox Manager
  • Right click > Remove > Remove only
  1. (Optional) Move the image to the local machine. This is good for performance but not portability.
  2. On cloned VM: Right-click > Remove > Remove only
  3. Copy $YOUR_VB_HOME/${whatever you called the clone} to /seng/scratch/group3
  4. Open the migrated .vbox file.

CLI

# Log in to the machine where the VM will run
ssh netlinkID@bXXX.seng.uvic.ca

# Check if a base VM is present
VBoxManage list vms

# (Optional) Register (not copy) the base image if it's not present
VBoxManage registervm /seng/seng462/group3/VMs/${BASE_VM}/${BASE_VM}.vbox

# Clone the base to the local machine
VBoxManage clonevm ${BASE_VM} --name ${VM_NAME} --basefolder /seng/scratch/group3 --register

# Default is for SSH only on localhost; we want it available over the network
# Standard SSH port is 44439
VBoxManage modifyvm ${VM_NAME} --natpf1 delete ssh
VBoxManage modifyvm ${VM_NAME} --natpf1 "ssh,tcp,142.104.91.${MACHINE},${SSH_PORT},,22"

# Set up RMQ while we're at it
# Standard RMQ port is 44430
VBoxManage modifyvm ${VM_NAME} --natpf1 "RMQ,tcp,142.104.91.${MACHINE},${RMQ_PORT},,${RMQ_PORT}"
# Expose any other ports you want

# Start the VM
VBoxManage startvm ${VM_NAME} --type headless

# After ~5sec you can SSH into the VM
ssh -p ${SSH_PORT} root@b${MACHINE}.seng.uvic.ca

# When finished, gracefully shut down the VM
VBoxManage controlvm ${VM_NAME} acpipowerbutton

VM setup is automated with this script.

Remote operation

  1. Sending workloads into redis for multiple workers

Resources

Port Assignments

  • Inter machine communication: 444430 -> 444439
  • Quote server: quoteserve.seng.uvic.ca:4443

Network Storage

Can do local installs for software here. Has a 2TB capacity.

  • /seng/seng462/group3
    • Private network storage. Installers, VM masters live here.
  • /seng/scratch/group3
    • The physical disk of the machine you're logged in to.
    • If you're logged in to B142 then you can't see /seng/scratch/group3 on B143
    • Install location for VMs.