BretFisher

Teams

HR Analysis, by team Spectre

• Web visualizations of HR road accident data using Google Maps and D3 over the last 5 years
• Data from github, not sure of source

NOAH, by team Haxton

• Map visualizations of "overflow incidents" of storm and sewer processing systems
• Some data from data.gov, some from HRSD, but didn't all line up to their desired data around nitrogen content due to overflow.

BretFisher

Code for Hampton Roads - Code4HR.org

What We Are

• https://www.codeforamerica.org
• http://brigade.codeforamerica.org/brigade
• https://d.pr/aU2+ - My Favorite CfA Quotes

What We Do

• https://d.pr/4J4T+ - What We Do
• https://hrtb.us - find your bus

BretFisher

Hack to Help 2015 Winners Original Proposal

Team

TOL DWS Explore Hampton Roads

Product

HRQLS "An easy-to-use tool for visualizing quality of life by regions in Hampton Roads.

Overall Vision & Functionality

EHR weights and merges QoL factors such as crime, cost, health, schools, transportation, sanitation, recreation, and others to produce a map representing QoL in regions within Hampton Roads. The user adjusts sliders for each factor to find the optimal location in which to live based on their input.

BretFisher

FROM selenium/standalone-chrome

# lets install node 6.x then cleanup
# install build-essential and leave in case npm needs it
# we have to sudo because selenium defaults to seluser
WORKDIR /tmp
ADD https://deb.nodesource.com/setup_6.x nodesource_setup.sh 
RUN sudo bash nodesource_setup.sh \
    && sudo apt-get install -y nodejs build-essential \
    && sudo rm -rf /var/lib/apt/lists/*

BretFisher

CONTAINER ID        IMAGE                                    COMMAND                  CREATED              STATUS              PORTS               NAMES
0ed57993dc33        alpine:latest                            "top"                    About a minute ago   Up About a minute                       c1m.26887.6hhpgf6e0ceh44u9m77o6ua5o
34bbec457d3f        alpine:latest                            "top"                    About a minute ago   Up About a minute                       c1m.24871.6sz0rw4sinx057q460rbryi9t
509cc29a7aac        alpine:latest                            "top"                    2 minutes ago        Up 2 minutes                            c1m.23778.6fodlsp1gfb11z4zc3ht7nvfl
e2e852a5c42f        alpine:latest                            "top"                    3 minutes ago        Up 3 minutes                            c1m.20352.epp244g73mt4s76wph31ixizl
0ef9694c621a        alpine:latest                            "top"                    5 minutes ago        Up 5 minutes                    

BretFisher

Oct 28 14:37:18 ip-172-31-63-55 dockerd[26165]: time="2016-10-28T14:37:18.308189347Z" level=info msg="2016/10/28 14:37:18 [INFO] memberlist: Marking ip-172-31-59-92-7b438b1188a3 as failed, suspect timeout reached\n"
Oct 28 14:37:18 ip-172-31-63-55 dockerd[26165]: time="2016-10-28T14:37:18.753674582Z" level=info msg="2016/10/28 14:37:18 [INFO] memberlist: Marking ip-172-31-21-186-3dcc744b686c as failed, suspect timeout reached\n"
Oct 28 14:37:18 ip-172-31-63-55 dockerd[26165]: time="2016-10-28T14:37:18.842625022Z" level=info msg="2016/10/28 14:37:18 [INFO] memberlist: Suspect ip-172-31-23-36-12bf3bd381ff has failed, no acks received\n"

BretFisher

#option 1: copy and paste this into ssh to install docker engine
# NOTE: update --label=owner=YOURNAME below if you want to easily identify yours

apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D && \
mkdir -p /etc/apt/sources.list.d && \
echo deb https://apt.dockerproject.org/repo ubuntu-xenial main > /etc/apt/sources.list.d/docker.list && \
printf 'net.ipv4.neigh.default.gc_thresh1 = 30000\nnet.ipv4.neigh.default.gc_thresh2 = 32000\nnet.ipv4.neigh.default.gc_thresh3 = 32768' >> /etc/sysctl.conf && \
sysctl -p && \
service lxcfs stop && apt-get remove -y -q lxc-common lxcfs lxd lxd-client && \
apt-get update -q && apt-get install -y -q linux-image-extra-$(uname -r) linux-image-extra-virtual && \

BretFisher

Docker Swarm Mode Ports

Starting with 1.12 in July 2016, Docker Swarm Mode is a built-in solution with built-in key/value store. Easier to get started, and fewer ports to configure.

Inbound Traffic for Swarm Management

• TCP port 2377 for cluster management & raft sync communications
• TCP and UDP port 7946 for "control plane" gossip discovery communication between all nodes
• UDP port 4789 for "data plane" VXLAN overlay network traffic
• IP Protocol 50 (ESP) if you plan on using overlay network with the encryption option

AWS Security Group Example

BretFisher

# NOT FOR SHELL SCRIPT, but rather just for quick copy paste 
# this is a copy-paste version with defaults of the full shell script docker-xenial.sh which is below this one in gist.

apt-get -y install apt-transport-https ca-certificates curl && \
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add - && \
add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" && \
service lxcfs stop && apt-get remove -y -q lxc-common lxcfs lxd lxd-client && \
apt-get update -q && \
apt-get install -y -q docker-ce && \
printf '{ "userns-remap" : "default" , "storage-driver" : "overlay2" }' > /etc/docker/daemon.json && \

BretFisher

Docker Cli Tips and Tricks

• bret@bretfisher.com
• https://twitter.com/BretFisher
• http://bretfisher.com

My favorite command line options and best practices

• Bash/zsh completion
• use Tab to populate command line, narrows down options as you go, fills in container names, ID's, images, volumes. Huge time saver.