Couchbase cluster can be set up on AWS EC2 instance as shown below.

Setup

The following configuration details are for Ubuntu distro.

  1. Setup EBS (EBS is recommended for better performance).

     # Mounting EBS to /mnt
 sudo mkfs.ext4 /dev/xvdf
 sudo mkdir /mnt
 sudo mount /dev/xvdf /mnt

 # Configure fstab
 # Add following line in /etc/fstab document
 # /dev/xvdf       /mnt    auto    defaults,nobootwait,comment=cloudconfig 0       2
 echo "/dev/xvdf       /mnt    auto    defaults,nobootwait,comment=cloudconfig 0       2" | sudo tee -a /etc/fstab

  2. Download Couchbase

     # Download the deb file from couchbase website
 wget http://packages.couchbase.com/releases/3.0.1/couchbase-server-enterprise_3.0.1-ubuntu12.04_amd64.deb

 # Copy the downloaded file into all nodes. Replace the IP XXX.XXX.XXX.XXX with actual IP.
 scp  couchbase-server-enterprise_3.0.1-ubuntu12.04_amd64.deb ubuntu@XXX.XXX.XXX.XXX:couchbase-server-enterprise_3.0.1-ubuntu12.04_amd64.deb

  3. Install and configure Couchbase on each node.

     # Install Couchbase & setup folder
 sudo dpkg -i couchbase-server-enterprise_3.0.1-ubuntu12.04_amd64.deb
 sudo mkdir /mnt/cb
 sudo chown couchbase:couchbase /mnt/cb

 # Configure all the Couchbase installations.
 /opt/couchbase/bin/couchbase-cli node-init -c 127.0.0.1:8091 \
         -u admin -p PASSWORD \
         --node-init-data-path=/mnt/cb/data \
         --node-init-index-path=/mnt/cb/index
  # PASSWORD replace with actual password (use a lengthy random string).

  4. Initialize the cluster in one of the nodes. Here, RAM is set as 15GB per node. Can be changed as required.

     /opt/couchbase/bin/couchbase-cli cluster-init -c 127.0.0.1:8091 \
         -u admin -p PASSWORD \
         --cluster-init-ramsize=15360

  5. Add all other nodes. Change the server-add IP address for all remaining nodes and execute.

     /opt/couchbase/bin/couchbase-cli rebalance -c 127.0.0.1:8091 -u admin -p PASSWORD \
         --server-add=XXX.XXX.XXX.XXX:8091 \
         --server-add-username=admin \
         --server-add-password=PASSWORD

  6. Now, create a Bucket. Finally..

     # Create a bucket `bucket-one` with quota 10GB per node.
 /opt/couchbase/bin/couchbase-cli bucket-create -c 127.0.0.1:8091 -u admin -p PASSWORD \
         --bucket=bucket-one \
         --bucket-type=couchbase \
         --bucket-password=BPASSWORD \
         --bucket-ramsize=10240 \
         --bucket-replica=1 \
         --wait
 # Replace BPASSWORD with password for the bucket.

Now, we can start using the bucket and so the Couchbase cluster.