Shell scripts to create a mongodb replica set and sharded cluster locally

start-mongo-replset.sh

#!/bin/bash

# shell script to create a simple mongodb replica set (tested on osx)
set -e

red=$(tput setaf 1)
green=$(tput setaf 2)
yellow=$(tput setaf 3)
default=$(tput sgr0)

function finish {
    pids=(`cat ~/mongosvr/rs-*.pid`)
    for pid in "${pids[@]}"
    do
        kill $pid
        wait $pid
    done
}
trap finish EXIT


mkdir -p ~/mongosvr/rs-0
mkdir -p ~/mongosvr/rs-1
mkdir -p ~/mongosvr/rs-2

mongod --shardsvr --dbpath ~/mongosvr/rs-0 --replSet set --rest --port 27091 \
    --config . --pidfilepath ~/mongosvr/rs-0.pid 2>&1 | sed "s/.*/$red&$default/" &

mongod --shardsvr --dbpath ~/mongosvr/rs-1 --replSet set --rest --port 27092 \
    --config . --pidfilepath ~/mongosvr/rs-1.pid 2>&1 | sed "s/.*/$green&$default/" &

mongod --shardsvr --dbpath ~/mongosvr/rs-2 --replSet set --rest --port 27093 \
    --config . --pidfilepath ~/mongosvr/rs-2.pid 2>&1 | sed "s/.*/$yellow&$default/" &

# wait a bit for the first server to come up
sleep 5

# call rs.initiate({...})
cfg="{
    _id: 'set',
    members: [
        {_id: 1, host: 'localhost:27091'},
        {_id: 2, host: 'localhost:27092'},
        {_id: 3, host: 'localhost:27093'}
    ]
}"
mongo localhost:27091 --eval "JSON.stringify(db.adminCommand({'replSetInitiate' : $cfg}))"

# sleep forever
cat

start-mongo-sharded-cluster.sh

#!/bin/bash

# shell script to create a simple mongodb sharded cluster locally.
# Requires a replica set to be already running, you can run
# start-mongo-replset.sh first to start a replica set.
set -e

red=$(tput setaf 1)
green=$(tput setaf 2)
default=$(tput sgr0)

function finish {
    pid=`cat ~/mongosvr/shard-config-0.pid`
    kill $pid
    wait $pid
}
trap finish EXIT


mkdir -p ~/mongosvr/config-0

# start up the mongodb config server for the shards 
mongod --configsvr --dbpath ~/mongosvr/config-0 --port 27019 \
    --config . --pidfilepath ~/mongosvr/shard-config-0.pid 2>&1 | sed "s/.*/$red&$default/" &

sleep 3

mongos --configdb localhost:27019 | sed "s/.*/$green&$default/" &

sleep 3

# add the first replica set instance as a shard, the others will be discovered automatically by mongos
mongo --eval "JSON.stringify(sh._adminCommand( { addShard : 'set/localhost:27091' } , true ))"

# enable sharding on the test database
mongo --eval "JSON.stringify(sh._adminCommand( { enableSharding : 'test' } ))"

# sleep forever
cat

nice script, thank you

Thank you for that script ;) It's perfect for my project!

Great script! Thank you for sharing.

Two questions,
1.Does it works also for mongo 3.x ?
2.Does it tested on ubuntu?

Thanks.

Hi Sir,
I am try to create mongo db replica set remotely as service .
kindly guide me step -by step .

Thanks for this! But this script does not support MongoDB 3.4 in its current form. (I am guessing it was written for 3.2.)

For MongoDB 3.4, each config server also needs to be a replicaset (CSRS).

I have published a similar script for MongoDB 3.4 here.

thx!

Great Script

Could it support mongodb 5.0 ? Thanks~

Write a shell script to install, start and initiate the Mongo dB replica set on your local machine with the below requirements.

1. The MongoDB version must be v5.0.
2. There must be 3 members in the replica set with port numbers 27017,27018 and 27019 respectively.
3. Replica set name should be rso.
4. The 3rd member should be an arbiter.
5. The WiredTiger cache for all the members should be 1GB
6. The configuration to disable javascript execution should be added.

please help me with this in 1 hr