Mongos Install/Setup in Elastic Beanstalk

Question

Looking down the road at sharding, we would like to be able to have multiple mongos instances. The recommendation seems to be to put mongos on each application server. I was

Answer 1

I couldn't get @bobmarksie's solution to work, but thanks to anowak and avinci here for this .ebextensions/aws.config file:

files:
  "/home/ec2-user/install_mongo.sh" :
    mode: "0007555"
    owner: root
    group: root
    content: |
      #!/bin/bash
      echo "[MongoDB]
      name=MongoDB Repository
      baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/x86_64
      gpgcheck=0
      enabled=1" | tee -a /etc/yum.repos.d/mongodb.repo
      yum -y update
      yum -y install mongodb-org-server mongodb-org-shell mongodb-org-tools

commands:
  01install_mongo:
    command: ./install_mongo.sh
    cwd: /home/ec2-user
    test: '[ ! -f /usr/bin/mongo ] && echo "MongoDB not installed"'

services:
  sysvinit:
    mongod:
      enabled: true
      ensureRunning: true
      commands: ['01install_mongo']