mjuric

Setting up Docker with user namespaces on CentOS 7.4

The procedure below has been tested on a Digital Ocean VM with CentOS 7.4

# Install docker from RHEL’s standard repos
yum install -y docker

#
# We’ll activate the ‘user namespaces’ feature that defends against

mjuric

Utilities you'll care about

All these are already installed on epyc.

• kafkacat (conda install -c conda-forge kafkacat)

• kt (grab it from https://github.com/fgeller/kt/releases)

• kafka-* (come with kafka, if you yum install if from Confluent's repo, or via Docker if you're so inclined). Warning -- JVM based and dreadfully slow.

• jq (conda install -c conda-forge jq or use your favorite package manager)

mjuric

# Using gource to visualize a repository's git history
#
# You'll need gource and ffmpeg (available through homebrew on OS X)
#
# Run this frim within a repository

gource \
	--key --background 000000 --logo MEDLogoBLK.jpg --file-idle-time 30 --max-file-lag 1 \
	--title "lsst.afw: making of a library" --colour-images -a .1 --user-scale 1 \
	--multi-sampling --bloom-multiplier 1 --bloom-intensity 0.75 --highlight-all-users \

mjuric

Making your own (editable) clone of the SSSC conda environment and Jupyter kernel

This gist describes how to clone the SSSC conda environment (and jupyter kernel) on epyc into your own directory where you can install your own packages into.

This will continue using the LSST stack from the SSSC directory, but you will be able to override (i.e., setup, in the EUPS sense) individual packages by editing your copy of env-setup.sh (see below).

##
## make sure you're using bash, and bring conda to your path
##

mjuric

Conda packaged binaries of the LSST software stack

Video tutorial?

Click here.

Installing and using

No root privileges are required to install or use this code.

mjuric

#!/bin/bash
#
# From $EUPS_DIR, run as:
#     (git reset --hard && git checkout master && ./configure --prefix=$PWD --with-eups=$PWD/stack) && ./testUserTag.sh
#
set -e

export EUPS_DIR=$(cd $(dirname $0); pwd)

rm -rf ~/.eups

mjuric

Verify the ordering is not buggy:

In [1]: from conda.resolve import normalized_version as nv

In [2]: a = nv('master_gac1855abae.0125')

In [3]: b = nv('master.20150626170402.post157')

In [4]: c = nv('master.20150928224422.post8')

mjuric

##########################################
# Cleanup of the environment for the demo
rm -f ~/.eups/default
rm -rf ~/demo
rm -rf ~/miniconda

#####################################################
# Demo of miniconda
#