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render-ws-docker.md

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Render Web Services Docker Instructions

The render web services can be built and deployed within Docker. You'll need to first install Docker for your OS.

Building Images

To build the full render-ws image:

# cd to root directory of render repo (where Dockerfile is located) 
docker build -t render-ws:latest --target render-ws .

You can speed up future builds by building and tagging the build environment:

# cd to root directory of render repo (where Dockerfile is located) 
docker build -t render-ws-build-environment:latest --target build_environment .

To build just the web service JARs without deploying into a Jetty container:

# cd to root directory of render repo (where Dockerfile is located) 
# saves JAR and WAR files in /root/render-lib 
docker build -t render-ws:latest-build --target builder .

Running Images

To run the full render-ws image:

# with database running on same host at default port and no authentication
docker run -p 8080:8080 -e "MONGO_HOST=localhost" --rm render-ws:latest

# with customized environment variables in a file (named dev.env)
docker run -p 8080:8080 --env-file dev.env --rm render-ws:latest

You must explicitly specify either the MONGO_HOST or MONGO_CONNECTION_STRING environment variables when running a container based upon the full render-ws image.

The full render-ws image supports the following set of environment variables (specified values are defaults):

Environment Variables

# ---------------------------------
# Docker Environment Variables File
# 
# NOTE: don't use quotes around values - details here:
#       https://docs.docker.com/engine/reference/commandline/run/#set-environment-variables--e---env---env-file

# ---------------------------------
# Database Connection Parameters 

# if a connection string is specified, other mongo connection variables are ignored
# format details are here: https://docs.mongodb.com/manual/reference/connection-string
# example: mongodb://<user>:<password>@replRender/render-mongodb2.int.janelia.org,render-mongodb3.int.janelia.org/admin
MONGO_CONNECTION_STRING=  

# should be 'y' if you are using a connection string that includes username and password 
MONGO_CONNECTION_STRING_USES_AUTH=n

MONGO_HOST=
MONGO_PORT=

# if authentication is not needed (or you are using a connection string), leave these empty
MONGO_USERNAME=                            
MONGO_PASSWORD=
MONGO_AUTH_DB=

# ---------------------------------
# Web Service JVM Parameters
 
JAVA_OPTIONS=-Xms3g -Xmx3g -server -Djava.awt.headless=true

# ---------------------------------
# Web Service Threadpool Parameters (leave these alone unless you really know what you are doing)

JETTY_THREADPOOL_MIN_THREADS=10
JETTY_THREADPOOL_MAX_THREADS=200

# ---------------------------------
# Web Service Logging Parameters

# appender options are 'STDOUT', 'FILE', or 'NONE'
LOG_ACCESS_ROOT_APPENDER=STDOUT
LOG_JETTY_ROOT_APPENDER=STDOUT

# log level options are: 'OFF', 'ERROR', 'WARN', 'INFO', 'DEBUG', or 'TRACE'
LOG_JETTY_ROOT_LEVEL=WARN 
LOG_JETTY_JANELIA_LEVEL=WARN 

# ---------------------------------
# Web Service Rendering Parameters

# use this to improve dynamic rendering speed for zoomed-out views,
# views that contain more than this number of tiles will have bounding boxes rendered instead of actual tile content 
WEB_SERVICE_MAX_TILE_SPECS_TO_RENDER=20          
                                             
# if left empty, the image processor cache will be sized at half of the memory allocated to the JVM
WEB_SERVICE_MAX_IMAGE_PROCESSOR_GB= 

# ---------------------------------
# Viewing Tools Parameters

NDVIZHOST=                                
NDVIZPORT=

# use the url parameter if you need https (overrides host and port parameters)
NDVIZ_URL=

# specify without protocol (assumes http) like: 'renderer-catmaid:8080'
VIEW_CATMAID_HOST_AND_PORT=                
VIEW_DYNAMIC_RENDER_HOST_AND_PORT=

VIEW_RENDER_STACK_OWNER=
VIEW_RENDER_STACK_PROJECT=
VIEW_RENDER_STACK=

VIEW_MATCH_OWNER=
VIEW_MATCH_COLLECTION=

Entrypoints

The following entrypoints are provided:

Exporting JETTY_BASE for External Use

If you'd like to run the render-ws application on an external jetty server (outside of Docker), you can use /render-docker/render-export-jetty-entrypoint.sh to configure a container within Docker and then export the configured JETTY_BASE to a mounted volume for external use.

# export files to <working-directory>/jetty_base_<run-time> (change or drop --env-file as needed)
docker run -it --mount type=bind,source="$(pwd)",target=/render-export \
               --env-file ./env.janelia.prod \
               --entrypoint /render-docker/render-export-jetty-entrypoint.sh \
               --rm \
               render-ws:latest

Other Useful Docker Commands

To open a Bourne shell on the latest running render-ws container:

docker exec -it $(docker ps --latest --quiet) /bin/sh

To open a Bourne shell on a new render-ws container without running jetty (and remove the container on exit):

docker run -it --entrypoint /bin/sh --rm render-ws:latest

To remove all stopped containers:

docker rm $(docker ps --all --quiet)

To remove all untagged (<none>) images (including the large build artifacts image if you did not tag it):

docker image rm $(docker images --filter "dangling=true" -q --no-trunc)