Advanced TechniquesPaths, Docker Containers, etc.

Grape Server Basics

Paths /data/grape/

config/

config.yml - configuration not relevant for application (docker registry credentials etc.) (used only by grape command)

settings.yml - configuration for proxy/application/sentry (used only by grape command)

sub directories for proxy/sentry/application, will be created by web setup

proxy/docker-compose.yml

sentry/docker-compose.yml

application/docker-compose.yml

data/ - persistent data (database, static, media, …)

setup/ – contains the symlinks current and next which point to the respective installed and to-be-upgraded grape versions

logs/ - logs from all services

bin/

websetup/

docker-compose.yml

some configuration files

/home/grape/.local/bin/grape - “grape” command

• grape user must be in the docker group • /data/grape must belong to grape user • Please don’t change the username

Paths

Containers

Grape Server / VM

Grape Web Setup

HTTP Port 80 → redirect HTTPS HTTPS Port 443 WS Port 443 HTTPS Port 8888 (Web Setup)

Grape Docker Compose Sentry Docker Compose

proxy_nginx

websetup_nginx

websetup_django

websetup_redis

application_nginx

application_grape-runtime

application_elasticsearch

application_postgresql

application_redis-transientapplication_redis-persistentapplication_redis-pubsub

sentry_grapesentry-sentry

sentry_grapesentry-redis

sentry_grapesentry-celery1

sentry_grapesentry-postgresql

sentry_grapesentry-celery-beat

application_nignx-elasticsearch

application_pgbouncer

Docker Compose PackagesDocker Containers

Databases

PostgreSQL

• Organization Data • Memberships • User Data • Channels Metadata (Private

Conversation / Groups and their Memberships)

• everything in grape.example.com/admin

• Messages • Data for Grape Search

Elasticsearch

• Cache • User Online Status • PubSub Channels for Realtime

Event Dispatching

Redis

Application Container

Websocket Service (grape-ws)

Handles websocket connections with gunicorn and gevent. All actions from the core chat like sending/updating/deleting a message as well as opening channels are handled over this service (RPC API).

Managed by Supervisor (http://supervisord.org/)

HTTP Request Response Service (grape-rr)

Handles request/response requests over HTTP like image up/download, delivering the webclient on initial call and the web settings pages.

General Purpose Worker for Asynchronous Operations (chatgrape_celery-worker_{n})

Processes asynchronous tasks like cronjobs, syncing user directory or labeling messages with NLP.

Async Worker for Notifications (worker-notifications_{n})

Processes notifications asynchronously to be closer to realtime and does not get blocked by log running “general purpose” tasks and syncs.

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