https://github.com/minghsu0107/mongo-sharded-cluster-quickstart
A minimal MongoDB sharded cluster using docker-compose.
https://github.com/minghsu0107/mongo-sharded-cluster-quickstart
docker-compose mongodb sharded-cluster
Last synced: about 2 months ago
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A minimal MongoDB sharded cluster using docker-compose.
- Host: GitHub
- URL: https://github.com/minghsu0107/mongo-sharded-cluster-quickstart
- Owner: minghsu0107
- Created: 2022-11-02T14:22:02.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2022-11-02T14:28:20.000Z (over 3 years ago)
- Last Synced: 2025-04-04T02:11:26.868Z (about 1 year ago)
- Topics: docker-compose, mongodb, sharded-cluster
- Language: JavaScript
- Homepage:
- Size: 9.77 KB
- Stars: 2
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# MongoDB Sharded Cluster Quickstart
Set up a minimal MongoDB sharded cluster with a replication factor of 2 using docker-compose (development only).
### Components
- Config Server (3-member replica set): `config01`,`config02`,`config03`
- 3 Shards (each a 2 member replica set):
- `shard01a`,`shard01b`
- `shard02a`,`shard02b`
- `shard03a`,`shard03b`
- 1 Router (mongos): `router`
### Initialization
```bash
docker-compose up -d
```
Initialize the config server, shards, and router:
```bash
sh init.sh
```
This script has a `sleep 20` to wait for the config server and shards to elect the primaries of their replica sets respectively before initializing the router.
Create the first user `admin` on database `admin` and verify the status of the sharded cluster:
```bash
docker-compose exec -it router mongosh --host localhost --port 27017
mongos> admin = db.getSiblingDB("admin")
mongos> admin.createUser(
{
user: "admin",
pwd: "mypass",
roles: [
{ role: "userAdminAnyDatabase", db: "admin" },
{ role: "clusterAdmin", db: "admin" }
]
}
)
mongos> admin.auth('admin', 'mypass')
mongos> sh.status()
shardingVersion
{
_id: 1,
minCompatibleVersion: 5,
currentVersion: 6,
clusterId: ObjectId("636276b5aabddd36d3cee9e6")
}
---
shards
[
{
_id: 'shard01',
host: 'shard01/shard01a:27018,shard01b:27018',
state: 1,
topologyTime: Timestamp({ t: 1667397315, i: 4 })
},
{
_id: 'shard02',
host: 'shard02/shard02a:27019,shard02b:27019',
state: 1,
topologyTime: Timestamp({ t: 1667397315, i: 12 })
},
{
_id: 'shard03',
host: 'shard03/shard03a:27020,shard03b:27020',
state: 1,
topologyTime: Timestamp({ t: 1667397315, i: 17 })
}
]
---
active mongoses
[ { '6.0.2': 1 } ]
---
autosplit
{ 'Currently enabled': 'yes' }
---
balancer
{
'Currently enabled': 'yes',
'Currently running': 'no',
'Failed balancer rounds in last 5 attempts': 0,
'Migration Results for the last 24 hours': { '247': 'Success' }
}
---
databases
[
{
database: { _id: 'config', primary: 'config', partitioned: true },
collections: {
'config.system.sessions': {
shardKey: { _id: 1 },
unique: false,
balancing: true,
chunkMetadata: [
{ shard: 'shard01', nChunks: 777 },
{ shard: 'shard02', nChunks: 124 },
{ shard: 'shard03', nChunks: 123 }
],
chunks: [
'too many chunks to print, use verbose if you want to force print'
],
tags: []
}
}
}
]
```
Test client connection with user authentication:
```bash
docker-compose exec -it router mongosh --host localhost --port 27017 -u admin -p mypass --authenticationDatabase "admin"
```
For programming clients, you can use the following connection string URI:
```
mongodb://admin:mypass@router:27017/?authSource=admin
```