Hi folks! I am having trouble with the mongoDB tutorial to create replica sets. I want to create a replicaSet with a single node (don’t ask) and I am not sure what I am doing wrong so I thought I would post. Even when I tried with tutorial with 3 replicaSet nodes it failed. (I also had someone else follow my same steps and the error was the same on their end)
My goal here is to deploy a replica set with one node. (ie no replicas) According to [the mongodb documentation](https://docs.mongodb.com/manual/administration/replica-set-deployment/ there are two tutorials that seem relevant [Deploy A Replica Set] and [Convert a Standalone to a Replica Set]. But after reading the purpose of “Convert a Standalone to a Replica Set” it seems that “Deploy A Replica Set” is more along the lines of what I need. (since I don’t already have an instance running)
Ubuntu: 20.04
MongoDB 5.0
First I create a new multipass instance so I have a clean machine
multipass launch -n replica-tutorial
multipass shell replica-tutorial
According to the documentation for Deploy A Replica Set I performed the following steps:
[Requirements]
wget -qO - https://www.mongodb.org/static/pgp/server-5.0.asc | sudo apt-key add -
echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu focal/mongodb-org/5.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-5.0.list
sudo apt-get update
sudo apt-get install -y mongodb-org
[Hostnames]
I add my hostname to dns
sudo vim /etc/hosts
192.168.184.26 mongodb0.example.net
Note this ip is from the ip a command
[Connectivity]
sudo ufw enable
sudo ufw allow ssh
sudo ufw allow 27017/tcp
[Configuration]
sudo mkdir -p /data/db
sudo chown -R mongodb:mongodb /data/db
sudo chmod -R 777 /data/db
Add the following changes to the config file
sudo vi /etc/mongod.conf
storage:
dbPath: /data/db
….
replication:
replSetName: "rs0"
net:
bindIp: localhost,192.168.184.26
[Start Member of Replica Set]
mongod --replSet "rs0" --bind_ip localhost,192.168.184.26 --dbpath /data/db
Note I add * --dbpath and the ip address listed here was retrieved from the command *ip a
At this point I get an error saying:
"NotYetInitialized: Replication has not yet been configured"
But initiation doesn’t happen until after [steps 2] and [3] in the tutorial so I am not sure why it can’t start until I initialize since according to the tutorial you are supposed to start the mongod instance and then initialize. What step am I missing
