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Ippevent "Regarde les instances tomber"

{:toc}

Requirements

  • Docker
  • Java 8
  • Maven 3

MongoDB

Build docker container

    cd mongo/docker/
    docker build -t vberetti/ippevent-mongo .

Start a cluster

    docker run -d --name <name> --privileged vberetti/ippevent-mongo

Note : '--privileged' option is required if you want to configure IPTables.

Example : 5 nodes replicatSet

Docker instances

    docker run -d --name node1 --privileged vberetti/ippevent-mongo
    docker run -d --name node2 --privileged vberetti/ippevent-mongo
    docker run -d --name node3 --privileged vberetti/ippevent-mongo
    docker run -d --name node4 --privileged vberetti/ippevent-mongo
    docker run -d --name node5 --privileged vberetti/ippevent-mongo

By default, docker should allocate IP address on 172.17.0.*. Check this with :

    docker inspect node1 | grep 'IPAddress'

We should have :

  • node 1 on IP : 172.17.0.2
  • node 2 on IP : 172.17.0.3
  • node 3 on IP : 172.17.0.4
  • node 4 on IP : 172.17.0.5
  • node 5 on IP : 172.17.0.6

Configure replicaSet

Connect on node 1 and configure the replicaSet with the file 5-nodes-cluster.txt contained in mongo directory of this repository :

    mongo 172.17.0.2 < mongo/5-nodes-replica-set.txt

This file contains the initialisation of the replicaSet

    rs.initiate()
    conf = rs.conf()
    conf.members[0].host="172.17.0.2:27017"
    rs.reconfig(conf)
    rs.add('172.17.0.3')
    rs.add('172.17.0.4')
    rs.add('172.17.0.5')
    rs.add('172.17.0.6')

Note : the IP adress is changed after the rs.initiate() to provide externall IP address.

Stop and reuse docker instances

Stop all instances

    docker stop node1 node2 node3 node4 node5

Restart instances Note : before starting the cluster, make sure no other docker container is running on expected IPs 172.17.0.[2-6].

    docker start node1
    docker start node2
    docker start node3
    docker start node4
    docker start node5

MongoDB Rest API

Configure mongo seeds

Edit file located in mongodb-rest-api/src/main/resources/mongo.properties

Start the Rest API

    cd mongodb-rest-api
    mvn spring-boot:run

After startup, api is available at http://localhost:8080/users

Cassandra

Build docker container

    cd mongo/docker/
    docker build -t vberetti/ippevent-cassandra .

Start a cluster

    docker run -d --name <name> --privileged vberetti/ippevent-cassandra

Note : '--privileged' option is required if you want to configure IPTables.