secrets/dataops/redis_cluster_connection.md

# Redis Cluster Connection Guide

## Cluster Nodes
- **Node 1**: localhost:18010
- **Node 2**: localhost:18011  
- **Node 3**: localhost:18012

## Connection Details
- **Protocol**: Redis Cluster
- **Max Memory**: 20GB per node
- **Persistence**: AOF + RDB
- **Cluster Enabled**: Yes

## Redis-CLI Examples
```bash
# Connect to cluster
redis-cli -c -p 18010

# Cluster info
redis-cli -p 18010 cluster info

# Cluster nodes
redis-cli -p 18010 cluster nodes
```

## Python Client Example
```python
import redis
from redis.cluster import RedisCluster

# Connect to Redis Cluster
cluster = RedisCluster(
    startup_nodes=[
        {"host": "localhost", "port": 18010},
        {"host": "localhost", "port": 18011},
        {"host": "localhost", "port": 18012}
    ],
    decode_responses=True
)

# Cluster operations
cluster.set('cluster:key', 'cluster_value')
value = cluster.get('cluster:key')
print(f"Cluster value: {value}")
```

## Health Checks
```bash
# Check cluster health
redis-cli -p 18010 cluster info | grep cluster_state

# Check all nodes
redis-cli -p 18010 ping  # Should return PONG
redis-cli -p 18011 ping
redis-cli -p 18012 ping

# Memory usage
redis-cli -p 18010 info memory | grep used_memory_human

# Persistence status
redis-cli -p 18010 info persistence | grep aof_enabled
```

## Configuration Notes
- **Data Directory**: `/data/redis/node*/data/`
- **Append Only File**: Enabled for durability
- **Max Memory**: 20GB per node
- **Cluster Replication**: Each node has replicas

## Security
- ❗ Localhost binding only
- ❗ No authentication required
- ❗ Monitor cluster state regularly
- ❗ Verify AOF persistence working
- ❗ Regular backup of RDB files recommended

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**Last Updated:** September 4, 2025