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eventmesh-runtime-quickstart-with-docker.md

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Quick Start Instruction

This quick start instruction is a detailed guide of setting up EventMesh via docker. It takes RocketMQ as connector for example.

Alternative languages: English version, Chinese version.

Prerequisites

  1. 64bit Linux is recommended.
  2. Docker Engine is assumed installed. The installation procedure could be found on docker docs.
  3. Basic docker concepts and commands are highly recommended acquiring first, including registry, volume, etc. However, it's not a necessity for going through this instruction because every commands are listed.
  4. RocketMQ is running successfully and could be routed to through IP address.

Get EventMesh Image

First, you could open a terminal and use the following pull command to download latest EventMesh from Docker Hub - the default docker registry.

sudo docker pull eventmesh/eventmesh:v1.3.0

During and After downloading, the terminal will show the status such as:

ubuntu@VM-16-4-ubuntu:~$ sudo docker pull eventmesh/eventmesh:v1.3.0
v1.3.0: Pulling from eventmesh/eventmesh
2d473b07cdd5: Downloading [======>                                            ]  9.649MB/76.1MB
2b97b2e51c1a: Pulling fs layer
ccef593d4fe7: Pulling fs layer
70beb7ae51cd: Waiting
0a2cf32321af: Waiting
5d764ea8950d: Waiting
71d02dcd996d: Waiting
v1.3.0: Pulling from eventmesh/eventmesh
2d473b07cdd5: Pull complete
2b97b2e51c1a: Pull complete
ccef593d4fe7: Pull complete
70beb7ae51cd: Pull complete
0a2cf32321af: Pull complete
5d764ea8950d: Pull complete
71d02dcd996d: Pull complete
Digest: sha256:267a93a761e999790f8bd132b09541f0ffab551e8618097a4adce8e3e66bbe4e
Status: Downloaded newer image for eventmesh/eventmesh:v1.3.0
docker.io/eventmesh/eventmesh:v1.3.0

Next, you could list and check local images on your machine using command:

sudo docker images

And, the terminal will print all local images such as the following content. It could be found that EventMesh image has been successfully downloaded.

ubuntu@VM-16-4-ubuntu:~$ sudo docker images
REPOSITORY               TAG         IMAGE ID       CREATED        SIZE
eventmesh/eventmesh      v1.3.0      da0008c1d03b   7 days ago     922MB

Prepare Configuration Files

Before running the EventMesh container from downloaded image, you need to configure some files.

Here this instruction takes RocketMQ as connector for example, so that two configuration files should be created: eventmesh.properties and rocketmq-client.properties.

First, you may need to create such files, using following commands:

sudo mkdir -p /data/eventmesh/rocketmq/conf
cd /data/eventmesh/rocketmq/conf
sudo touch eventmesh.properties
sudo touch rocketmq-client.properties

eventmesh.properties

It contains properties of EventMesh runtime env and integrated plugins.

Use vi command to edit eventmesh.properties:

sudo vi eventmesh.properties

In the quick start step, you could directly copy content in https://github.com/apache/incubator-eventmesh/blob/1.3.0/eventmesh-runtime/conf/eventmesh.properties .

Some default key-values are listed below:

Configuration Key Default Value Remarks
eventMesh.server.http.port 10105 EventMesh http server port
eventMesh.server.tcp.port 10000 EventMesh tcp server port
eventMesh.server.grpc.port 10205 EventMesh grpc server port

rocketmq-client.properties

It contains properties of running RocketMQ nameserver.

Use vi command to edit rocketmq-client.properties:

sudo vi rocketmq-client.properties

In the quick start step, you could refer to https://github.com/apache/incubator-eventmesh/blob/1.3.0/eventmesh-runtime/conf/rocketmq-client.properties , and change the value to a running nameserver address.

The default key-value is listed below:

Configuration Key Default Value Remarks
eventMesh.server.rocketmq.namesrvAddr 127.0.0.1:9876;127.0.0.1:9876 RocketMQ namesrv default address

Make EventMesh Run

Now you are at the step of running an EventMesh container from downloaded docker image.

The main command is docker run, and two things need to be noted.

  1. binding the container port with host machine port: use -p option of docker run.
  2. mount the configuration files with host machine files: use -v option of docker run.

So that the command for running EventMesh is:

sudo docker run -d \
> -p 10000:10000 -p 10105:10105 \
> -v /data/eventmesh/rocketmq/conf/eventmesh.properties:/data/app/eventmesh/conf/eventmesh.properties \
> -v /data/eventmesh/rocketmq/conf/rocketmq-client.properties:/data/app/eventmesh/conf/rocketmq-client.properties \
> eventmesh/eventmesh:v1.3.0

After you executing it and seeing a string below it, the container is running successfully.

Next, you could use below command to check the status of the EventMesh container:

sudo docker ps

Successfully, you could see the terminal presenting container status such as:

CONTAINER ID   IMAGE                        COMMAND                  CREATED              STATUS              PORTS                                                                                          NAMES
d1e1a335d4a9   eventmesh/eventmesh:v1.3.0   "/bin/sh -c 'sh star…"   About a minute ago   Up About a minute   0.0.0.0:10000->10000/tcp, :::10000->10000/tcp, 0.0.0.0:10105->10105/tcp, :::10105->10105/tcp   focused_bartik

It tells you that container id is d1e1a335d4a9 and random name is focused_bartik. They are the identifier to this container when managing it. Note that they may be different in your machine.

Manage EventMesh Container

After correctly running EventMesh container, you could manage such container by entering container, checking logs, remove container, and so on.

enter container command example:

sudo docker exec -it [your container id or name] /bin/bash

checking logs command example inside container:

cd ../logs
tail -f eventmesh.out

remove container command example:

sudo docker rm -f [your container id or name]

Explore More

Since EventMesh is running, now you can write your own client code referring eventmesh-examples.

Hope you enjoy and explore more on EventMesh!