Intro Mongo with NodeJS

REQ

Software must install before reading

1. Docker
2. Docker-compse

Run mongo

1. Run docker-compose.yml

docker-compose up --detach

2. To check status replica

docker exec -it mongo_mongodb-primary_1 mongo -u root

• Password in docker-compose.yml with MONGODB_ROOT_PASSWORD field, you can change it
• mongo_mongodb-primary_1 it's name docker container, you can change it with field container_name in docker-compose file

After that, enter code at below to terminal docker

replicaset:PRIMARY> rs.status();

you will see all config of replica set of cluster

More

1. That shut-down the replica set

docker-compose down

2. Remove network if you remove images don't use docker-compose down

docker network prune

3. Restart or rebuild

docker-compose up --detach --build

Mongo Shell

• rs.status(): checks status of the Replica set
• rs.initiate(): initiates set with default settings
• rs.conf(): get the current configuration object
• rs.add(hostportstr): add a new member to the set
• rs.remove(hostportstr): remove a host from the replica set
• rs.printReplicationInfo(): check oplog size and time range
• rs.printSecondaryReplicationInfo(): check replica set members and replication lag
• db.isMaster(): check who is primary
• db.hello(): check who is primary

Handle when Error

1. Every change, you must remove or edit config mongodb
2. You should change file host

127.0.0.1 mongodb-primary

• mongodb-primary if you change it in docker-compose.yml with MONGODB_ADVERTISED_HOSTNAME field, then you must change it's

2. mkdir: cannot create directory '/bitnami/mongodb/data': Operation not permitted

sudo chown -R 1001 /data/mongo

• /data/mongo:

Continue

Read file link

REF

Producer

1. https://hub.docker.com/r/bitnami/mongodb