Config and install MS

MS is the abbreviation of Meta Service, the Compute-storage decoupled component of Doris, which provides metadata management and query services. The configuration field in DorisDisaggregatedMetaService is MS.

Simplest configuration

MS service is a stateless service and is usually deployed in active-standby mode. The simplest configuration is as follows:

spec:
  ms:
    image: {msImage}
    replicas: 2

Among them, {msImage} is the version of the MS service you want to deploy.

Configure resources

Add resource usage restrictions for the MS service. Take the 4c 4Gi configuration as an example:

spec:
  ms:
    image: {msImage}
    replicas: 2
    requests:
      cpu: 4
      memory: 4Gi
    limits:
      cpu: 4
      memory: 4Gi

Update the modified configuration to the [metadata management resources](/docs/dev/install/cluster-deployment/k8s-deploy/compute-storage-decoupled/install-quickstart#Install DorisDisaggregatedMetaService). for Compute-storage decoupled that need to be deployed.

Customized configuration file

Configuration files are mounted on K8s through ConfigMap. Doris-Operator automates the configuration of mutual perception between Compute-storage decoupled components. When deploying MS services using customized configuration files, please do not configure FDB related configuration.

ConfigMap:

apiVersion: v1
data:
  doris_cloud.conf: |
    # // meta_service
    brpc_listen_port = 5000
    brpc_num_threads = -1
    brpc_idle_timeout_sec = 30
    http_token = greedisgood9999

    # // doris txn config
    label_keep_max_second = 259200
    expired_txn_scan_key_nums = 1000

    # // logging
    log_dir = ./log/
    # info warn error
    log_level = info
    log_size_mb = 1024
    log_filenum_quota = 10
    log_immediate_flush = false
    # log_verbose_modules = *

    # //max stage num
    max_num_stages = 40
kind: ConfigMap
metadata:
  name: doris-metaservice
  namespace: default

The MS configuration using the above ConfigMap is as follows:

spec:
  ms:
    image: {msImage}
    configMaps:
    - name: doris-metaservice
      mountPath: /etc/doris

In actual deployment, configure the name and namespace of ConfigMap as needed, and configure the configuration information in the [Compute-storage decoupled metadata management resource](/docs/dev/install/cluster-deployment/k8s-deploy/compute-storage-decoupled/install-quickstart#Install DorisDisaggregatedMetaService) to be deployed according to the above sample format. The startup configuration file used by the MS service is named doris_cloud.conf, so the key of the ConfigMap for mounting the startup configuration must also be doris_cloud.conf. The startup configuration must be mounted to the /etc/doris directory, that is, the mountPath is /etc/doris.

Tip

MS service needs to use FDB as the backend metadata storage, and the FDB service must be deployed when deploying MS service.