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https://github.com/ab70/mongodb-replicaset-docker
https://github.com/ab70/mongodb-replicaset-docker
docker mongodb replica-set
Last synced: about 2 months ago
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- Host: GitHub
- URL: https://github.com/ab70/mongodb-replicaset-docker
- Owner: ab70
- Created: 2024-02-04T05:52:24.000Z (11 months ago)
- Default Branch: master
- Last Pushed: 2024-07-13T03:59:34.000Z (6 months ago)
- Last Synced: 2024-07-13T19:11:39.160Z (6 months ago)
- Topics: docker, mongodb, replica-set
- Language: Shell
- Homepage: https://medium.com/@nurulabrar2369/setup-mongodb-replica-set-using-docker-1e8f304b2a55
- Size: 15.6 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
## mongodb-replicaset
## 1. Run setup.sh
```
bash setup.sh
```
## 2. Start Docker containers
```
docker compose down
docker compose up -d
```
## 3. Execute commands inside mongo1 container
```
docker exec -it mongo1 bash
```
## 4. Connect to MongoDB shell
```
mongosh -u root -p example
```
### 4.1 If authentication is not enabled by the docker compose then you have to initialize manulally
### 4.1.1 Connect to shell without authentication
```
mongosh
```
### 4.1.2 Switch to admin db (it will also creat ethe db)
```
db.createUser({
user: "root",
pwd: "example",
roles: [{ role: "root", db: "admin" }]
})
```
#### Now it will create root user (This step can also be done after rs.initiste, sometimes rs.initiate wont allow without authentication)
## 5. Initialize replica set
```
rs.initiate(
{
_id: "rs0",
version: 1,
members: [
{ _id: 0, host: "mongo1:27017", priority: 3 },
{ _id: 1, host: "mongo2:27018", priority: 2 },
{ _id: 2, host: "mongo3:27019", priority: 1 }
]
}
)
```
## 6. Check replica set status
```
rs.status()
```
## Connect using compass
## Url
```
mongodb://root:example@localhost:27017,localhost:27018,localhost:27019/?replicaSet=rs0&authSource=admin
```
If youu can't connect and it keeps loading then for Linux :
```
sudo nano /etc/hosts
```
Add or modify 127.0.0.1 localhost , then add container name for example:
```
127.0.0.1 localhost mongo1
```
Then save & exit. Now with the url it is accessable.
## Automate Full Deployment
#### This will work if if have initialized the whole process once (Initially it fails for delay issue which can vary from matchine to matchine).
```
sudo bash deploy.sh
```
#### Or just run the dcker once its been initialized, no need to initiate whole process again, just run
```
sudo docker compose up -d
```
#### To remove all volume at once
```
docker volume rm $(docker volume ls -q)
```
## Backup db (manual)
#### To backup a db if a url is present:
```
#It will backup the whole db in that current irectory(full cluster)
mongodump --uri "mongodb+srv://username:[email protected]" --out .
```
#### To restore a db if url is present:
```
# This will restore with the url frombackup directtory(current):(this will merge data without deleting previous data)
mongorestore --uri "mongodb+srv://username:[email protected]" .
# This will restore with the url frombackup directtory(current):(this will replace or delete previous data and keep current only)
mongorestore --uri "mongodb+srv://username:[email protected]" --drop .
```
### To restore a cluster from inside the docker of that db
```
#Copy the db to the dockers a directory /tmp
docker cp /home/abrar/niamCluster mongo1:/tmp
#Get into the db docker
docker exec -it mongo1
#Inside the docker go to that /tmp folder and the cluster directory
cd /tmp/foldername
#now from here sync DB using this
mongorestore --username root --password example --authenticationDatabase admin .
```