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Scylladb/.gitignore
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standalone/data
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cluster/data-*
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Additional permission under GNU GPL version 3 section 7
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If you modify this Program, or any covered work, by linking or combining it with [name of library] (or a modified version of that library), containing parts covered by the terms of [name of library's license], the licensors of this Program grant you additional permission to convey the resulting work. Corresponding Source for a non-source form of such a combination shall include the source code for the parts of [name of library] used as well as that of the covered work.
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# ScyllaDB
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ScyllaDB is a NoSQL database management system that is compatible with Apache Cassandra.
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It is designed to scale linearly across multiple commodity servers, while maintaining low latency and high availability.
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ScyllaDB is written in C++ and uses the Seastar framework for concurrency and asynchronous I/O.
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## Prerequisites
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- Docker
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- Docker Compose
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## Running the Stack
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### Standalone
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Inside the `standalone` directory, run `docker-compose up` to start the connector.
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### Port Configurations
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- `9042` - ScyllaDB CQL port
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- `9160` - ScyllaDB Thrift port
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- `7004` - ScyllaDB Inter-node communication (RPC)
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- `7005` - ScyllaDB Inter-node communication (SSL)
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- `10000` - Scylla REST API
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### Cluster
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Inside the `cluster` directory, run `docker-compose up` to start the connector.
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#### Port Configurations
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Master
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- `9042` - ScyllaDB CQL port
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- `9160` - ScyllaDB Thrift port
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- `7004` - ScyllaDB Inter-node communication (RPC)
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- `7005` - ScyllaDB Inter-node communication (SSL)
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- `10000` - Scylla REST API
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Node 1
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- `9043` - ScyllaDB CQL port
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- `9161` - ScyllaDB Thrift port
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- `7006` - ScyllaDB Inter-node communication (RPC)
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- `7007` - ScyllaDB Inter-node communication (SSL)
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- `10001` - Scylla REST API
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**Cluster Status:**
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run `docker-compose exec scylladb-master nodetool status` to view the cluster status.
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```go
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Datacenter: datacenter1
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=======================
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Status=Up/Down
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|/ State=Normal/Leaving/Joining/Moving
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-- Address Load Tokens Owns Host ID Rack
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UN 172.27.0.3 2.07 MB 256 ? a899f085-0437-444a-80fe-158958a8796b rack1
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UN 172.27.0.2 2.02 MB 256 ? 2910746d-e5f2-4a28-a63d-a089cdcb0438 rack1
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Note: Non-system keyspaces don't have the same replication settings, effective ownership information is meaningless
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```
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**Cluster Topology:**
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run `docker-compose exec scylladb-master nodetool describecluster` to view the cluster topology.
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```go
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Cluster Information:
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Name: Test Cluster
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Snitch: org.apache.cassandra.locator.SimpleSnitch
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DynamicEndPointSnitch: disabled
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Partitioner: org.apache.cassandra.dht.Murmur3Partitioner
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Schema versions:
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f99fb55d-f298-30d6-bd75-31f9855362c2: [172.29.0.2, 172.29.0.3]
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```
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**Cluster Info:**
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run `docker-compose exec scylladb-master nodetool info` to view the cluster info.
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```go
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ID : eb720697-ac71-413c-a843-748527cff616
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Gossip active : true
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Thrift active : false
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Native Transport active: true
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Load : 524 KB
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Generation No : 1679584265
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Uptime (seconds) : 139
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Heap Memory (MB) : 14.16 / 247.50
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Off Heap Memory (MB) : 4.65
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Data Center : datacenter1
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Rack : rack1
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Exceptions : 0
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Key Cache : entries 0, size 0 bytes, capacity 0 bytes, 0 hits, 0 requests, 0.000 recent hit rate, 0 save period in seconds
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Row Cache : entries 13, size 13 bytes, capacity 154.2 KiB, 271 hits, 271 requests, 1.000 recent hit rate, 0 save period in seconds
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Counter Cache : entries 0, size 0 bytes, capacity 0 bytes, 0 hits, 0 requests, 0.000 recent hit rate, 0 save period in seconds
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Percent Repaired : 0.0%
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Token : (invoke with -T/--tokens to see all 256 tokens)
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```
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## CQLSH
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CQLSH is a command line tool for interacting with ScyllaDB.
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### Usage
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```go
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docker-compose exec <<scylladb-master | scylladb>> cqlsh
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```
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version: '3.9'
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services:
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scylladb-master:
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image: scylladb/scylla:latest
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container_name: scylladb-master
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ports:
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- '9042:9042'
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- '9160:9160'
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- '7004:7000'
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- '7005:7001'
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- '10000:10000'
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volumes:
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- ./data-master:/var/lib/scylla
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environment:
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- SCYLLA_ARGS=--developer-mode 1
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healthcheck:
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test: cqlsh -e 'SELECT now() FROM system.local' || exit -1
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start_period: 15s
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interval: 5s
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timeout: 10s
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retries: 10
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scylladb-node1:
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image: scylladb/scylla:latest
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container_name: scylladb-node1
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depends_on:
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scylladb-master:
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condition: service_healthy
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ports:
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- '9043:9042'
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- '9161:9160'
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- '7006:7000'
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- '7007:7001'
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- '10001:10000'
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volumes:
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- ./data-node1:/var/lib/scylla
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environment:
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- SCYLLA_ARGS=--developer-mode 1
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command: --seeds=scylladb-master
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healthcheck:
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test: cqlsh -e 'SELECT now() FROM system.local' || exit -1
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start_period: 15s
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interval: 5s
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timeout: 10s
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retries: 10
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version: '3.9'
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services:
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scylladb:
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image: scylladb/scylla:latest
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container_name: scylladb
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ports:
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- '9042:9042'
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- '9160:9160'
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- '7004:7000'
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- '7005:7001'
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- '10000:10000'
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volumes:
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- ./data:/var/lib/scylla
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environment:
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- SCYLLA_ARGS=--developer-mode 1
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healthcheck:
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test: cqlsh -e 'SELECT now() FROM system.local' || exit -1
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start_period: 15s
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interval: 5s
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timeout: 10s
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retries: 5
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