milvus/configs/milvus.yaml

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# Related configuration of etcd, used to store Milvus metadata.
etcd:
  endpoints:
    - localhost:2379
  rootPath: by-dev # The root path where data is stored in etcd
  metaSubPath: meta # metaRootPath = rootPath + '/' + metaSubPath
  kvSubPath: kv # kvRootPath = rootPath + '/' + kvSubPath

# Related configuration of minio, which is responsible for data persistence for Milvus.
minio:
  address: localhost # Address of MinIO/S3
  port: 9000   # Port of MinIO/S3
  accessKeyID: minioadmin # accessKeyID of MinIO/S3
  secretAccessKey: minioadmin # MinIO/S3 encryption string
  useSSL: false # Access to MinIO/S3 with SSL
  bucketName: "a-bucket" # Bucket name in MinIO/S3
  rootPath: files # The root path where the message is stored in MinIO/S3

# Related configuration of pulsar, used to manage Milvus logs of recent mutation operations, output streaming log, and provide log publish-subscribe services.
pulsar:
  address: localhost # Address of pulsar
  port: 6650 # Port of pulsar
  maxMessageSize: 5242880 # 5 * 1024 * 1024 Bytes, Maximum size of each message in pulsar.

rocksmq:
  path: /var/lib/milvus/rdb_data # The path where the message is stored in rocksmq
  rocksmqPageSize: 2147483648 # 2 GB, 2 * 1024 * 1024 * 1024 bytes, The size of each page of messages in rocksmq
  retentionTimeInMinutes: 10080 # 7 days, 7 * 24 * 60 minutes, The retention time of the message in rocksmq.
  retentionSizeInMB: 8192 # 8 GB, 8 * 1024 MB, The retention size of the message in rocksmq.

# Related configuration of rootCoord, used to handle data definition language (DDL) and data control language (DCL) requests
rootCoord:
  address: localhost
  port: 53100

  grpc:
    serverMaxRecvSize: 2147483647 # math.MaxInt32, Maximum data size received by the server
    serverMaxSendSize: 2147483647 # math.MaxInt32, Maximum data size sent by the server
    clientMaxRecvSize: 104857600 # 100 MB, Maximum data size received by the client
    clientMaxSendSize: 104857600 # 100 MB, Maximum data size sent by the client

  dmlChannelNum: 256 # The number of dml channels created at system startup
  maxPartitionNum: 4096 # Maximum number of partitions in a collection
  minSegmentSizeToEnableIndex: 1024 # It's a threshold. When the segment size is less than this value, the segment will not be indexed

# Related configuration of proxy, used to validate client requests and reduce the returned results.
proxy:
  port: 19530

  grpc:
    serverMaxRecvSize: 536870912 # 512 MB, 512 * 1024 * 1024 Bytes
    serverMaxSendSize: 536870912 # 512 MB, 512 * 1024 * 1024 Bytes
    clientMaxRecvSize: 104857600 # 100 MB, 100 * 1024 * 1024
    clientMaxSendSize: 104857600 # 100 MB, 100 * 1024 * 1024

  timeTickInterval: 200 # ms, the interval that proxy synchronize the time tick
  msgStream:
    timeTick:
      bufSize: 512
  maxNameLength: 255  # Maximum length of name for a collection or alias
  maxFieldNum: 256     # Maximum number of fields in a collection
  maxDimension: 32768 # Maximum dimension of a vector
  maxShardNum: 256 # Maximum number of shards in a collection
  maxTaskNum: 1024 # max task number of proxy task queue
  bufFlagExpireTime: 3600 # second, the time to expire bufFlag from cache in collectResultLoop
  bufFlagCleanupInterval: 600 # second, the interval to clean bufFlag cache in collectResultLoop


# Related configuration of queryCoord, used to manage topology and load balancing for the query nodes, and handoff from growing segments to sealed segments.
queryCoord:
  address: localhost
  port: 19531
  autoHandoff: true # Enable auto handoff
  autoBalance: true # Enable auto balance
  overloadedMemoryThresholdPercentage: 90 # The threshold percentage that memory overload
  balanceIntervalSeconds: 60
  memoryUsageMaxDifferencePercentage: 30

  grpc:
    serverMaxRecvSize: 2147483647 # math.MaxInt32
    serverMaxSendSize: 2147483647 # math.MaxInt32
    clientMaxRecvSize: 104857600 # 100 MB, 100 * 1024 * 1024
    clientMaxSendSize: 104857600 # 100 MB, 100 * 1024 * 1024

# Related configuration of queryNode, used to run hybrid search between vector and scalar data.
queryNode:
  cacheSize: 32 # GB, default 32 GB, `cacheSize` is the memory used for caching data for faster query. The `cacheSize` must be less than system memory size.
  gracefulTime: 0 # Minimum time before the newly inserted data can be searched (in ms)
  port: 21123

  grpc:
    serverMaxRecvSize: 2147483647 # math.MaxInt32
    serverMaxSendSize: 2147483647 # math.MaxInt32
    clientMaxRecvSize: 104857600 # 100 MB, 100 * 1024 * 1024
    clientMaxSendSize: 104857600 # 100 MB, 100 * 1024 * 1024

  stats:
    publishInterval: 1000 # Interval for querynode to report node information (milliseconds)
  dataSync:
    flowGraph:
      maxQueueLength: 1024 # Maximum length of task queue in flowgraph
      maxParallelism: 1024 # Maximum number of tasks executed in parallel in the flowgraph
  msgStream:
    search:
      recvBufSize: 512 # msgPack channel buffer size
      pulsarBufSize: 512 # pulsar channel buffer size
    searchResult:
      recvBufSize: 64 # msgPack channel buffer size
  # Segcore will divide a segment into multiple chunks.
  segcore:
    chunkRows: 32768 # The number of vectors in a chunk.


indexCoord:
  address: localhost
  port: 31000

  grpc:
    serverMaxRecvSize: 2147483647 # math.MaxInt32
    serverMaxSendSize: 2147483647 # math.MaxInt32
    clientMaxRecvSize: 104857600 # 100 MB, 100 * 1024 * 1024
    clientMaxSendSize: 104857600 # 100 MB, 100 * 1024 * 1024

indexNode:
  port: 21121

  grpc:
    serverMaxRecvSize: 2147483647 # math.MaxInt32
    serverMaxSendSize: 2147483647 # math.MaxInt32
    clientMaxRecvSize: 104857600 # 100 MB, 100 * 1024 * 1024
    clientMaxSendSize: 104857600 # 100 MB, 100 * 1024 * 1024

dataCoord:
  address: localhost
  port: 13333

  grpc:
    serverMaxRecvSize: 2147483647 # math.MaxInt32
    serverMaxSendSize: 2147483647 # math.MaxInt32
    clientMaxRecvSize: 104857600 # 100 MB, 100 * 1024 * 1024
    clientMaxSendSize: 104857600 # 100 MB, 100 * 1024 * 1024
  enableCompaction: true # Enable data segment compression
  enableGarbageCollection: false

  segment:
    maxSize: 512 # Maximum size of a segment in MB
    sealProportion: 0.75 # It's the minimum proportion for a segment which can be sealed
    assignmentExpiration: 2000 # The time of the assignment expiration in ms 

  compaction:
    enableAutoCompaction: true

  gc:
    interval: 3600 # gc interval in seconds
    missingTolerance: 86400 # file meta missing tolerance duration in seconds, 60*24
    dropTolerance: 86400 # file belongs to dropped entity tolerance duration in seconds, 60*24


dataNode:
  port: 21124

  grpc:
    serverMaxRecvSize: 2147483647 # math.MaxInt32
    serverMaxSendSize: 2147483647 # math.MaxInt32
    clientMaxRecvSize: 104857600 # 100 MB, 100 * 1024 * 1024
    clientMaxSendSize: 104857600 # 100 MB, 100 * 1024 * 1024

  dataSync:
    flowGraph:
      maxQueueLength: 1024 # Maximum length of task queue in flowgraph
      maxParallelism: 1024 # Maximum number of tasks executed in parallel in the flowgraph
  flush:
    # Max buffer size to flush for a single segment.
    insertBufSize: 16777216 # Bytes, 16 MB

# Configure whether to store the vector and the local path when querying/searching in Querynode.
localStorage:
  path: /var/lib/milvus/data/
  enabled: true

# Configures the system log output.
log:
  level: debug # info, warn, error, panic, fatal
  file:
    rootPath: "" # default to stdout, stderr
    maxSize: 300 # MB
    maxAge: 10 # Maximum time for log retention in day.
    maxBackups: 20
  format: text # text/json

msgChannel:
  # Channel name generation rule: ${namePrefix}-${ChannelIdx}
  chanNamePrefix:
    cluster: "by-dev"
    rootCoordTimeTick: "rootcoord-timetick"
    rootCoordStatistics: "rootcoord-statistics"
    rootCoordDml: "rootcoord-dml"
    rootCoordDelta: "rootcoord-delta"
    search: "search"
    searchResult: "searchResult"
    proxyTimeTick: "proxyTimeTick"
    queryTimeTick: "queryTimeTick"
    queryNodeStats: "query-node-stats"
    # Cmd for loadIndex, flush, etc...
    cmd: "cmd"
    dataCoordInsertChannel: "insert-channel-"
    dataCoordStatistic: "datacoord-statistics-channel"
    dataCoordTimeTick: "datacoord-timetick-channel"
    dataCoordSegmentInfo: "segment-info-channel"
  # skip replay query channel under failure recovery
  skipQueryChannelRecovery: "false"

  # Sub name generation rule: ${subNamePrefix}-${NodeID}
  subNamePrefix:
    rootCoordSubNamePrefix: "rootCoord"
    proxySubNamePrefix: "proxy"
    queryNodeSubNamePrefix: "queryNode"
    dataNodeSubNamePrefix: "dataNode"
    dataCoordSubNamePrefix: "dataCoord"

common:
  defaultPartitionName: "_default"  # default partition name for a collection
  defaultIndexName: "_default_idx"  # default index name
  retentionDuration: 432000 # 5 days in seconds

knowhere:
  # Default value: auto
  # Valid values: [auto, avx512, avx2, avx, sse4_2]
  # This configuration is only used by querynode and indexnode, it selects CPU instruction set for Searching and Index-building.
  simdType: auto