Using Docker to run Tinode

All images are available at https://hub.docker.com/r/tinode/

Install Docker 1.8 or above. The provided dockerfiles are dependent on Docker networking which may not work with the older Docker.
Create a bridge network. It's used to connect Tinode container with the database container.
```
$ docker network create tinode-net
```
Decide which database backend you want to use: RethinkDB, MySQL or MongoDB. Run the selected database container, attaching it to tinode-net network:
1. RethinkDB: If you've decided to use RethinkDB backend, run the official RethinkDB Docker container:
```
$ docker run --name rethinkdb --network tinode-net --restart always -d rethinkdb:2.3
```
See instructions for more options.
1. MySQL: If you've decided to use MySQL backend, run the official MySQL Docker container:
```
$ docker run --name mysql --network tinode-net --restart always --env MYSQL_ALLOW_EMPTY_PASSWORD=yes -d mysql:5.7
```
See instructions for more options. MySQL 5.7 or above is required.
1. MongoDB: If you've decided to use MongoDB backend, run the official MongoDB Docker container and initialise it as single node replica set (you can change "rs0" if you wish):
```
$ docker run --name mongodb --network tinode-net --restart always -d mongo:latest --replSet "rs0"
$ docker exec -it mongodb mongo

# And inside mongo shell:
> rs.initiate( {"_id": "rs0", "members": [ {"_id": 0, "host": "mongodb:27017"} ]} )
> quit()
```
See instructions for more options. MongoDB 4.2 or above is required.

The name rethinkdb, mysql or mongodb in the --name assignment is important. It's used by other containers as a database's host name.
Run the Tinode container for the appropriate database:
1. RethinkDB:
```
$ docker run -p 6060:6060 -d --name tinode-srv --network tinode-net tinode/tinode-rethinkdb:latest
```
1. MySQL:
```
$ docker run -p 6060:6060 -d --name tinode-srv --network tinode-net tinode/tinode-mysql:latest
```
1. MongoDB:
```
$ docker run -p 6060:6060 -d --name tinode-srv --network tinode-net tinode/tinode-mongodb:latest
```
You can also run Tinode with the tinode/tinode image (which has all of the above DB adapters compiled in). You will need to specify the database adapter via STORE_USE_ADAPTER environment variable. E.g. for mysql, the command line will look like
```
$ docker run -p 6060:6060 -d -e STORE_USE_ADAPTER mysql --name tinode-srv --network tinode-net tinode/tinode:latest
```
See below for more options.

The port mapping -p 5678:1234 tells Docker to map container's port 1234 to host's port 5678 making server accessible at http://localhost:5678/. The container will initialize the database with test data on the first run.

You may replace :latest with a different tag. See all all available tags here:
- MySQL tags
- RethinkDB tags
- MongoDB tags
- All bundle tags (comming soon)
Test the installation by pointing your browser to http://localhost:6060/.

Optional

External config file

The container comes with a built-in config file which can be customized with values from the environment variables (see Supported environment variables below). If changes are extensive it may be more convenient to replace the built-in config file with a custom one. In that case map the config file located on your host (e.g. /users/jdoe/new_tinode.conf) to container (e.g. /tinode.conf) using Docker volumes --volume /users/jdoe/new_tinode.conf:/tinode.conf then instruct the container to use the new config --env EXT_CONFIG=/tinode.conf:

$ docker run -p 6060:6060 -d --name tinode-srv --network tinode-net \
		--volume /users/jdoe/new_tinode.conf:/tinode.conf \
		--env EXT_CONFIG=/tinode.conf \
		tinode/tinode-mysql:latest

If you set EXT_CONFIG all other environment variables except RESET_DB, FCM_SENDER_ID, FCM_VAPID_KEY are ignored.

Resetting or upgrading the database

The database schema may change from time to time. An error Invalid database version 101. Expected 103 means the schema has changed and needs to be updated, in this case from version 101 to version 103. You need to either reset or upgrade the database to continue:

Shut down the Tinode container and remove it:

$ docker stop tinode-srv && docker rm tinode-srv

then repeat step 4 adding --env RESET_DB=true to reset or --env UPGRADE_DB=true to upgrade.

Also, the database is automatically created if missing.

Enable push notifications

Tinode uses Google Firebase Cloud Messaging (FCM) to send pushes. Follow instructions for obtaining the required FCM credentials.

Download and save the FCM service account credentials file.
Obtain values for apiKey, messagingSenderId, projectId, appId, messagingVapidKey. Assuming your Firebase credentials file is named myproject-1234-firebase-adminsdk-abc12-abcdef012345.json and it's saved at /Users/jdoe/, web API key is AIRaNdOmX4ULR-X6ranDomzZ2bHdRanDomq2tbQ, Sender ID 141421356237, Project ID myproject-1234, App ID 1:141421356237:web:abc7de1234fab56cd78abc, VAPID key (a.k.a. "Web Push certificates") is 83_Or_So_Random_Looking_Characters, start the container with the following parameters (using MySQL container as an example):

$ docker run -p 6060:6060 -d --name tinode-srv --network tinode-net \
		-v /Users/jdoe:/fcm \
		--env FCM_CRED_FILE=/fcm/myproject-1234-firebase-adminsdk-abc12-abcdef012345.json \
		--env FCM_API_KEY=AIRaNdOmX4ULR-X6ranDomzZ2bHdRanDomq2tbQ \
		--env FCM_APP_ID=1:141421356237:web:abc7de1234fab56cd78abc \
		--env FCM_PROJECT_ID=myproject-1234 \
		--env FCM_SENDER_ID=141421356237 \
		--env FCM_VAPID_KEY=83_Or_So_Random_Looking_Characters \
		tinode/tinode-mysql:latest

Run the chatbot

See instructions.

The chatbot password is generated only when the database is initialized or reset. It's saved to /botdata directory in the container. If you want to keep the data available between container changes, such as image upgrades, make sure the /botdata is a mounted volume (i.e. you always launch the container with --volume botdata:/botdata option).

Supported environment variables

You can specify the following environment variables when issuing docker run command:

Variable	Type	Default	Function
`AUTH_TOKEN_KEY`	string	`wfaY2RgF2S1OQI/ZlK+LSrp1KB2jwAdGAIHQ7JZn+Kc=`	base64-encoded 32 random bytes used as salt for authentication tokens.
`AWS_ACCESS_KEY_ID`	string		AWS Access Key ID when using `s3` media handler
`AWS_CORS_ORIGINS`	string	`["*"]`	Allowed origins (CORS) URL for downloads. Generally use your server URL and its aliases.
`AWS_REGION`	string		AWS Region when using `s3` media handler
`AWS_S3_BUCKET`	string		Name of the AWS S3 bucket when using `s3` media handler
`AWS_SECRET_ACCESS_KEY`	string		AWS Secret Access Key when using `s3` media handler
`CLUSTER_SELF`	string		Node name if the server is running in a Tinode cluster
`CLUSTER_NUM_PROXY_EVENT_GOROUTINES`	int	0	Number of goroutines used for processing topic master to proxy responses

A convenient way to generate a desired number of random bytes and base64-encode them on Linux and Mac:

$ openssl rand -base64 <desired length>

Metrics Exporter

See monitoring/exporter/README for information on the Exporter. Container is also available as a part of the Tinode docker distribution: tinode/exporter. Run it with

$ docker run -p 6222:6222 -d --name tinode-exporter --network tinode-net \
		--env SERVE_FOR=<prometheus|influxdb> \
		--env TINODE_ADDR=<tinode metrics endpoint> \
		... <monitoring service specific vars> \
		tinode/exporter:latest

Available variables:

Variable	Type	Default	Function
`SERVE_FOR`	string	``	Monitoring service: `prometheus` or `influxdb`
`TINODE_ADDR`	string	`http://localhost/stats/expvar/`	Tinode metrics path
`INFLUXDB_VERSION`	string	`1.7`	InfluxDB version (`1.7` or `2.0`)
`INFLUXDB_ORGANIZATION`	string	`org`	InfluxDB organization
`INFLUXDB_PUSH_INTERVAL`	int	`60`	Exporter metrics push interval in seconds
`INFLUXDB_PUSH_ADDRESS`	string	`https://mon.tinode.co/intake`	InfluxDB backend url
`INFLUXDB_AUTH_TOKEN`	string	``	InfluxDB auth token
`PROM_NAMESPACE`	string	`tinode`	Prometheus namespace
`PROM_METRICS_PATH`	string	`/metrics`	Exporter webserver path that Prometheus server scrapes

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README.md

README.md

Using Docker to run Tinode

Optional

External config file

Resetting or upgrading the database

Enable push notifications

Run the chatbot

Supported environment variables

Metrics Exporter

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Using Docker to run Tinode

Optional

External config file

Resetting or upgrading the database

Enable push notifications

Run the chatbot

Supported environment variables

Metrics Exporter