MongoDB Replica

install.sh

rpm --import https://www.mongodb.org/static/pgp/server-3.2.asc

cat > /etc/yum.repos.d/mongodb-org-3.2.repo << EOF
[mongodb-org-3.2]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.2/x86_64/
gpgcheck=1
enabled=1
gpgkey=https://www.mongodb.org/static/pgp/server-3.2.asc
EOF

yum install -y mongodb-org

chkconfig mongod on
/etc/init.d/mongod start

# update mongod config
vim /etc/mongod.conf
#> bind_ip 0.0.0.0
#> replSet=set

# update /etc/hosts so each node can refer to other using hostname

# on primary node only
mongod
#> rs.initiate();
#> rs.conf();
#> rs.add('node-2'); // replace with nodes to be added
#> rs.add('node-3'); // replace with nodes to be added