Looker : Docker : Docker Compose : Staging

__bin__docker-entrypoint.sh

#!/usr/bin/env bash

setHostname() {
    # If we're in ECS land, lets get host name from the meta data on the ec2 node
    if [[ ! -z "${ECS_CONTAINER_METADATA_FILE}" ]]; then
        _HOSTNAME=$(curl -s -XGET http://169.254.169.254/latest/meta-data/local-hostname)
    else
        _HOSTNAME=${HOSTNAME:-$(hostname)}
    fi

    sudo hostname ${_HOSTNAME}
}

_HOSTNAME=""
setHostname

echo "hostname:[${_HOSTNAME}]"

# dynamic looker args created at run time for the container.
# this is needed for proper clustering.
if [[ "$(cat /home/looker/looker/lookerstart.cfg)" != *"--hostname"* ]]; then
    echo "[Appending hostname]::[${_HOSTNAME}]::[/home/looker/looker/lookerstart.cfg]"
    echo "" >> /home/looker/looker/lookerstart.cfg
    echo "LOOKERARGS=\"\${LOOKERARGS} --hostname=${_HOSTNAME}\"" >> /home/looker/looker/lookerstart.cfg
fi

# the exit process isn't cleaning itself up, so we'll purge these if we see them.
if [[ -f "/home/looker/looker/.deploying" ]]; then
    echo "Removing [/home/looker/looker/.deploying] file"
    rm /home/looker/looker/.deploying
fi

if [[ -f "/home/looker/looker/.starting" ]]; then
    echo "Removing [/home/looker/looker/.starting] file"
    rm /home/looker/looker/.starting
fi

echo "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"
echo "starting up container for [looker] service"

echo "[startup args configured]++++++++++++++++++++++++++++++++++++++"
cat /home/looker/looker/lookerstart.cfg

exec $@

__config__database.yml

dialect: mysql
host: mysql
username: looker
password: passwordsareyourenemy
database: looker
port: 3306

__config__lookerstart.cfg

#
# Custom docker runtime options.
#
LOOKERARGS=""
LOOKERARGS="${LOOKERARGS} --no-daemonize"
LOOKERARGS="${LOOKERARGS} --log-level=debug"
LOOKERARGS="${LOOKERARGS} --internal-db-creds=/home/looker/looker/database.yml"
LOOKERARGS="${LOOKERARGS} --shared-storage-dir=/srv/data/looker"
LOOKERARGS="${LOOKERARGS} --disable-db-log"
LOOKERARGS="${LOOKERARGS} --error-emails-to=happy@go.lucky"
LOOKERARGS="${LOOKERARGS} --unlimited-scheduler-threads=0 --scheduler-threads=0 --scheduler-query-limit=0 --scheduler-query-timeout=1"
LOOKERARGS="${LOOKERARGS} --clustered"
LOOKERARGS="${LOOKERARGS} --no-ssl"
LOOKERARGS="${LOOKERARGS} --staging"

JAVAMEM="4096m"

__config__provision.yml

license_key: "USEA-STAG-ELIC-ENCE-HERE"
host_url: "https://looker.oh.yeah"
user:
  first_name: "jane"
  last_name: "mc jane"
  email: "janes@here.now"
  password: "supernotsecurepasswordherehuh"

README.md

Looker Docker

Description

This is meant and used for local development environment for looker; not really designed for production. (though the image is the same one we use) The files listed in here with the __config__ prefix should exist in a config directory off the root. (Github doesn't allow slashes in the name) This configuration has a load balancer service that automatically discoveres new looker containers, so you can just scale up once you let a single container get started and fully configured.

Directory structure

models will be saved in data/looker/model*

bin/docker-entrypoint.sh
config/database.yml
config/lookerstart.cfg
config/provision.yml
data/looker
data/mysql
Dockerfile
Dockerfile.mysql
docker-compose.yml

Run looker

docker-compose up -d 
docker-compose logs -f --tail 100

Scale looker

docker-compose scale looker=2

Mysql

Do you need to Seed your database? Forget everything above (ish)

in order to seed your database you'll need to do some manual work to get your data into the database, before running looker container. If you don't do this, looker will generate it's database on it's own.

start up mysql and do your import first

docker-compose up -d mysql 

start up the remaining services, after you've seeded the database

docker-compose up -d lb looker
docker-compose logs -f --tail 100 

Links / References

• docker-compose
• looker ports
• looker jvm
• looker startup
• looker cluster
• looker docker

docker-compose.yml

version: '2.1'

services:

  lb:
    image: dockercloud/haproxy:latest
    links:
      - looker
    ports:
     - "80:80"
     - "443:443"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock

  looker:
    image: hey/looker:latest
    build:
      context: .
      dockerfile: Dockerfile
    volumes:
      - ./data/looker:/srv/data/looker
    links:
      - "mysql"
    depends_on:
      - mysql

  #
  # Need to build in order to remap the user ids for mounted volumes.
  #
  mysql:
    image: ue/looker-mysql:latest
    build:
      context: .
      dockerfile: Dockerfile.mysql
    ports:
      - "3306:3306"
    volumes:
      - ./data/mysql/data:/var/lib/mysql:rw
    environment:
      MYSQL_ROOT_PASSWORD: blahblahblah
      MYSQL_DATABASE: looker
      MYSQL_USER: looker
      MYSQL_PASSWORD: bleepbloop
      MYSQL_ALLOW_EMPTY_PASSWORD: 0

Dockerfile

FROM ubuntu:16.04

RUN echo "[INFO]::[installing]::[base packages]" \
    && apt-get update \
    && apt-get install -y --no-install-recommends --no-install-suggests \
        software-properties-common libssl-dev libmcrypt-dev openssl ca-certificates \
        git ntp curl tzdata bzip2 libfontconfig1 phantomjs mysql-client sudo jq \
    && apt-get autoclean && apt-get clean && apt-get autoremove -y && apt-get clean && rm -rf /var/lib/apt/lists/*

RUN echo "[INFO]::[installing]::[java packages]" \
    && apt-get update \
    && add-apt-repository -y ppa:webupd8team/java \
    && apt-get update \
    && echo oracle-java8-installer shared/accepted-oracle-license-v1-1 boolean true | debconf-set-selections \
    && echo oracle-java8-installer shared/present-oracle-license-v1-1 note | debconf-set-selections \
    && yes | DEBIAN_FRONTEND=noninteractive apt-get install -y  --force-yes --no-install-recommends --no-install-suggests oracle-java8-installer \
    && apt-get remove -y software-properties-common && apt-get remove -y software-properties-common && apt-get autoclean && apt-get clean && apt-get autoremove -y && apt-get clean && rm -rf /var/lib/apt/lists/*

ARG LOOKER_VERSION="5.0"

RUN echo "[INFO]::[configure]::[misc]" \
    && cp /etc/sysctl.conf /etc/sysctl.conf.dist \
    && echo "net.ipv4.tcp_keepalive_time=200" | tee -a /etc/sysctl.conf \
    && echo "net.ipv4.tcp_keepalive_intvl=200" | tee -a /etc/sysctl.conf \
    && echo "net.ipv4.tcp_keepalive_probes=5" | tee -a /etc/sysctl.conf \
    && groupadd -g 1002 "looker" ||  true \
    && useradd -m  -u 1002 -g "looker" "looker" || true\
    && cp /etc/launchd.conf /etc/launchd.conf.dist || true \
    && echo "limit      maxfiles 8192 8192"     | tee -a /etc/launchd.conf \
    && echo "looker     soft     nofile     8192" | tee -a /etc/launchd.conf \
    && echo "looker     hard     nofile     8192" | tee -a /etc/launchd.conf \
    && echo '%looker ALL=(ALL) NOPASSWD:ALL' | tee -a /etc/sudoers

#
# insecure download should be validated.
#
RUN echo "[INFO]::[install]::[looker]" \
    && mkdir -p /home/looker/looker \
    && curl -o /home/looker/looker/looker.jar https://s3.amazonaws.com/download.looker.com/aeHee2HiNeekoh3uIu6hec3W/looker-${LOOKER_VERSION}-latest.jar \
    && curl -o /home/looker/looker/looker-service https://raw.githubusercontent.com/looker/customer-scripts/master/startup_scripts/looker

COPY ./config /tmp/build-configs
RUN echo "[INFO]::[configure]::[looker]" \
    && chmod 0750 /home/looker/looker/looker-service \
    && mv /tmp/build-configs/lookerstart.cfg /home/looker/looker/lookerstart.cfg \
    && mv /tmp/build-configs/database.yml /home/looker/looker/database.yml \
    && mv /tmp/build-configs/provision.yml /home/looker/looker/provision.yml \
    && chown -R looker:looker /home/looker/looker

#
# Move in standard entrypoint script and configure to run through TINI for safety.
#
COPY bin/docker-entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh

ARG TINI_VERSION="v0.14.0"
ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini /tini
RUN chmod +x /tini

USER looker

EXPOSE 9999

ENTRYPOINT ["/tini", "--"]

CMD ["/entrypoint.sh", "/home/looker/looker/looker-service", "start"]

Dockerfile.mysql

FROM percona:5.7

RUN usermod -u 1000 mysql \
    && groupmod -g 1002 staff \
    && groupmod -g 50 mysql