![docker install mongo docker install mongo](https://phoenixnap.com/kb/wp-content/uploads/2021/04/check-status-docker-service-mongodb.png)
You can see that the cluster is still running by using rs.status() on the mongo2 container. To verify that your replica set is working, you can try stopping one of the containers with docker stop and try to read from your database again. Note that the data is created inside the container storage and will be destroyed when the containers are removed from the host system. You can also connect to your cluster using MongoDB Compass to create a database and add some documents. docker exec -it mongo1 mongosh -eval "rs.status()" This will provide you with the status of your replica set, including the list of members. If you want to verify that everything was configured correctly, you can use the mongosh CLI tool to evaluate the rs.status() instruction. You should now have a running replica set. docker exec -it mongo1 mongosh -eval "rs.initiate( Test and Verify the Replica Set However, if you don’t have the tool installed on your laptop, it is possible to use mongosh available inside containers with the docker exec command. This CLI (command-line interface) tool is available with the default MongoDB installation or installed independently. To do so, you will need to use the MongoDB Shell.
![docker install mongo docker install mongo](https://www.wisdomjobs.com/tutorials/dockerpullcommandformongo.jpg)
The next step is to create the actual replica set with the three members. You can use docker ps to validate that they are running. You now have three containers running MongoDB. docker run -d -rm -p 27018:27017 -name mongo2 -network mongoCluster mongo:5 mongod -replSet myReplicaSet -bind_ip localhost,mongo2ĭocker run -d -rm -p 27019:27017 -name mongo3 -network mongoCluster mongo:5 mongod -replSet myReplicaSet -bind_ip localhost,mongo3 You will need to use a different name and a different port for those two. If the command was successfully executed, you should see a long hexadecimal string representing the container id.
![docker install mongo docker install mongo](https://www.code4it.dev/static/345e07cacbb45f8633e80f65cb09096e/dd45a/mongo-exposed-port.png)
![docker install mongo docker install mongo](https://schwabencode.com/contents/2018/2018-07-22_2-Load-MongoDB-Image-From-Registry.png)
This command creates a new mongod instance ready for a replica set. The rest of this instruction is the command that will be executed once the container is started. You could also use a MongoDB Enterprise custom image. This image is the MongoDB Community server version 5 ( maintained by Docker). mongo:5 is the image that will be used by Docker.All containers in the same network can see each other. -network indicates which Docker network to use.This will become the hostname of this machine. -name indicates the name of the container.Any incoming request on port 27017 on your machine will be redirected to port 27017 in the container. -d indicates that this container should run in detached mode (in the background).In here, you tell docker to start a container with the following parameters: docker run -d -rm -p 27017:27017 -name mongo1 -network mongoCluster mongo:5 mongod -replSet myReplicaSet -bind_ip localhost,mongo1 To start the container, use the docker run command. You are now ready to start your first container with MongoDB. If you restart your containers afterwards, you won’t need to recreate this network. Note that this command only needs to run once. The mongoCluster parameter here is the network’s name you can pick one that is appropriate for your setup.Īfter executing the command, you should see the id of the network you just created. To create a network, run the docker network create command. This network will let each of your containers running in this network see each other. The first step is to create a Docker network. You can find the installation instructions for your operating system on the Docker official website. Prerequisitesįor this tutorial, you will need to have a runtime for containers. Once you have a MongoDB cluster up and running, you will be able to experiment with it. The steps to create a docker cluster are as follows.