持久化存储与 ConfigMap

Doris-Operator 支持 Doris 各个组件的 pod 挂载 PV（Persistent Volume）。

PV 一般由 kubernetes 系统管理员创建，Doris-Operator 部署 Doris 服务的时候不直接使用 PV，而是通过 PVC 声明一组资源来向 kubernetes 集群申请 PV。当 PVC 被创建时，Kubernetes 将尝试将其与符合要求的可用 PV 进行绑定。 StorageClass 屏蔽了管理员手动创建 PV 的过程，对于没有现成的 PV 满足 PVC 需求时，可以根据 StorageClass 动态分配 PV。 PV 提供多种存储类型，主要分为两大类：网络存储、本地存储。两者基于各自原理和实现，为用户提供不同的性能和使用方式的体验，用户可以依据自己的容器化的服务类型和自身需求选择。

如果部署时未对 PVC 进行配置，Doris-Operator 默认使用 emptyDir 模式来存储元数据数据文件和运行日志。当 pod 重新启动时，相关数据将会丢失。

建议持久化存储的节点目录类型：

FE：doris-meta、log
BE：storage、log
CN：storage、log
BROKER：log

Doris-Operator 同时将日志输出到 console 和指定目录下。如果用户的 Kubernetes 系统有完整的日志收集能力，可通过 console 输出来收集 Doris INFO 级别（默认）的日志信息。但是这里仍然推荐配置 PVC 来持久化日志文件，因为除了 INFO 级别日志还会有诸如 fe.out、be.out、audit.log 以及垃圾回收日志，便于快速定位问题和审计日志回溯。

ConfigMap 是 Kubernetes 中用于存储配置文件的资源对象，它允许动态挂载配置文件，并将配置文件与应用程序解耦，使得配置的管理更加灵活和可维护。像 PVC 一样 ConfigMap 可以被 Pod 引用，以便在应用程序中使用配置数据。

StorageClass

Doris-Operator 提供了使用 Kubernetes 默认 StorageClass 模式来支持 FE 和 BE 数据存储，其中存储路径（mountPath）使用镜像里的默认配置。如果用户需要自己指定 StorageClass 则需要在 spec.feSpec.persistentVolumes 内修改 persistentVolumeClaimSpec.storageClassName，参考如下：

apiVersion: doris.selectdb.com/v1
kind: DorisCluster
metadata:
  labels:
    app.kubernetes.io/name: doriscluster
  name: doriscluster-sample-storageclass1
spec:
  feSpec:
    replicas: 3
    image: selectdb/doris.fe-ubuntu:2.0.2
    limits:
      cpu: 8
      memory: 16Gi
    requests:
      cpu: 8
      memory: 16Gi
    persistentVolumes:
    - mountPath: /opt/apache-doris/fe/doris-meta
      name: storage0
      persistentVolumeClaimSpec:
        # when use specific storageclass, the storageClassName should reConfig, example as annotation.
        storageClassName: ${your_storageclass}
        accessModes:
        - ReadWriteOnce
        resources:
          # notice: if the storage size less 5G, fe will not start normal.
          requests:
            storage: 100Gi
    - mountPath: /opt/apache-doris/fe/log
      name: storage1
      persistentVolumeClaimSpec:
        # when use specific storageclass, the storageClassName should reConfig, example as annotation.
        storageClassName: ${your_storageclass}
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 100Gi
  beSpec:
    replicas: 3
    image: selectdb/doris.be-ubuntu:2.0.2
    limits:
      cpu: 8
      memory: 16Gi
    requests:
      cpu: 8
      memory: 16Gi
    persistentVolumes:
    - mountPath: /opt/apache-doris/be/storage
      name: storage2
      persistentVolumeClaimSpec:
        # when use specific storageclass, the storageClassName should reConfig, example as annotation.
        storageClassName: ${your_storageclass}
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 100Gi
    - mountPath: /opt/apache-doris/be/log
      name: storage3
      persistentVolumeClaimSpec:
        # when use specific storageclass, the storageClassName should reConfig, example as annotation.
        storageClassName: ${your_storageclass}
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 100Gi

定制化 ConfigMap

Doris 在 Kubernetes 使用 ConfigMap 实现配置文件和服务解耦。在部署 doriscluster 之前需要提前在同 namespace 下部署想要使用的 ConfigMap，以下样例展示了 FE 使用名称为 fe-configmap 的 ConfigMap， BE 使用名称为 be-configmap 的 ConfigMap 的集群相关 yaml:

FE 的 ConfigMap 样例

apiVersion: v1
kind: ConfigMap
metadata:
  name: fe-configmap
  labels:
    app.kubernetes.io/component: fe
data:
  fe.conf: |
    CUR_DATE=`date +%Y%m%d-%H%M%S`
 
    # the output dir of stderr and stdout
    LOG_DIR = ${DORIS_HOME}/log
 
    JAVA_OPTS="-Djavax.security.auth.useSubjectCredsOnly=false -Xss4m -Xmx8192m -XX:+UseMembar -XX:SurvivorRatio=8 -XX:MaxTenuringThreshold=7 -XX:+PrintGCDateStamps -XX:+PrintGCDetails -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSClassUnloadingEnabled -XX:-CMSParallelRemarkEnabled -XX:CMSInitiatingOccupancyFraction=80 -XX:SoftRefLRUPolicyMSPerMB=0 -Xloggc:$DORIS_HOME/log/fe.gc.log.$CUR_DATE"
 
    # For jdk 9+, this JAVA_OPTS will be used as default JVM options
    JAVA_OPTS_FOR_JDK_9="-Djavax.security.auth.useSubjectCredsOnly=false -Xss4m -Xmx8192m -XX:SurvivorRatio=8 -XX:MaxTenuringThreshold=7 -XX:+CMSClassUnloadingEnabled -XX:-CMSParallelRemarkEnabled -XX:CMSInitiatingOccupancyFraction=80 -XX:SoftRefLRUPolicyMSPerMB=0 -Xlog:gc*:$DORIS_HOME/log/fe.gc.log.$CUR_DATE:time"
 
    # INFO, WARN, ERROR, FATAL
    sys_log_level = INFO
 
    # NORMAL, BRIEF, ASYNC
    sys_log_mode = NORMAL
 
    # Default dirs to put jdbc drivers,default value is ${DORIS_HOME}/jdbc_drivers
    # jdbc_drivers_dir = ${DORIS_HOME}/jdbc_drivers
 
    http_port = 8030
    rpc_port = 9020
    query_port = 9030
    edit_log_port = 9010
    
    enable_fqdn_mode = true

注意，使用 FE 的 ConfigMap ，必须为 fe.conf 添加 enable_fqdn_mode = true，具体原因可参考此处文档 (opens in a new tab)

BE 的 ConfigMap 样例

apiVersion: v1
kind: ConfigMap
metadata:
  name: be-configmap
  labels:
    app.kubernetes.io/component: be
data:
  be.conf: |
    CUR_DATE=`date +%Y%m%d-%H%M%S`
 
    PPROF_TMPDIR="$DORIS_HOME/log/"
 
    JAVA_OPTS="-Xmx1024m -DlogPath=$DORIS_HOME/log/jni.log -Xloggc:$DORIS_HOME/log/be.gc.log.$CUR_DATE -Djavax.security.auth.useSubjectCredsOnly=false -Dsun.java.command=DorisBE -XX:-CriticalJNINatives -DJDBC_MIN_POOL=1 -DJDBC_MAX_POOL=100 -DJDBC_MAX_IDLE_TIME=300000 -DJDBC_MAX_WAIT_TIME=5000"
 
    # For jdk 9+, this JAVA_OPTS will be used as default JVM options
    JAVA_OPTS_FOR_JDK_9="-Xmx1024m -DlogPath=$DORIS_HOME/log/jni.log -Xlog:gc:$DORIS_HOME/log/be.gc.log.$CUR_DATE -Djavax.security.auth.useSubjectCredsOnly=false -Dsun.java.command=DorisBE -XX:-CriticalJNINatives -DJDBC_MIN_POOL=1 -DJDBC_MAX_POOL=100 -DJDBC_MAX_IDLE_TIME=300000 -DJDBC_MAX_WAIT_TIME=5000"
 
    # since 1.2, the JAVA_HOME need to be set to run BE process.
    # JAVA_HOME=/path/to/jdk/
 
    # https://github.com/apache/doris/blob/master/docs/zh-CN/community/developer-guide/debug-tool.md#jemalloc-heap-profile
    # https://jemalloc.net/jemalloc.3.html
    JEMALLOC_CONF="percpu_arena:percpu,background_thread:true,metadata_thp:auto,muzzy_decay_ms:15000,dirty_decay_ms:15000,oversize_threshold:0,lg_tcache_max:20,prof:false,lg_prof_interval:32,lg_prof_sample:19,prof_gdump:false,prof_accum:false,prof_leak:false,prof_final:false"
    JEMALLOC_PROF_PRFIX=""
 
    # INFO, WARNING, ERROR, FATAL
    sys_log_level = INFO
 
    # ports for admin, web, heartbeat service
    be_port = 9060
    webserver_port = 8040
    heartbeat_service_port = 9050
    brpc_port = 8060

使用以上两个 ConfigMap 的 doriscluster 部署样例:

apiVersion: doris.selectdb.com/v1
kind: DorisCluster
metadata:
  labels:
    app.kubernetes.io/name: doriscluster
  name: doriscluster-sample-configmap
spec:
  feSpec:
    replicas: 3
    image: selectdb/doris.fe-ubuntu:2.0.2
    limits:
      cpu: 8
      memory: 16Gi
    requests:
      cpu: 8
      memory: 16Gi
    configMapInfo:
      # use kubectl create configmap fe-configmap --from-file=fe.conf
      configMapName: fe-configmap
      resolveKey: fe.conf
  beSpec:
    replicas: 3
    image: selectdb/doris.be-ubuntu:2.0.2
    limits:
      cpu: 8
      memory: 16Gi
    requests:
      cpu: 8
      memory: 16Gi
    configMapInfo:
      # use kubectl create configmap be-configmap --from-file=be.conf
      configMapName: be-configmap
      resolveKey: be.conf
  brokerSpec:
    replicas: 3
    image: selectdb/doris.broker-ubuntu:2.0.2
    limits:
      cpu: 2
      memory: 4Gi
    requests:
      cpu: 2
      memory: 4Gi
    configMapInfo:
      # use kubectl create configmap broker-configmap --from-file=apache_hdfs_broker.conf
      configMapName: broker-configmap
      resolveKey: apache_hdfs_broker.conf

这里的 resolveKey 是传入配置文件名（必须是fe.conf，be.conf 或 apache_hdfs_broker.conf，cn 节点也是 be.conf）用以解析传入的 Doris 集群配置的文件，doris-operator 会去解析该文件去指导 doriscluster 的定制化部署。

为 conf 目录添加特殊配置文件

本段落用来供参考需要在 Doris 节点的 conf 目录放置配置其他文件的容器化部署方案。比如常见的数据湖联邦查询 (opens in a new tab) 的 hdfs 配置文件映射。

这里以 BE 的 ConfigMap 和需要添加的 core-site.xml 文件为例：

apiVersion: v1
kind: ConfigMap
metadata:
  name: be-configmap
  labels:
    app.kubernetes.io/component: be
data:
  be.conf: |
    be_port = 9060
    webserver_port = 8040
    heartbeat_service_port = 9050
    brpc_port = 8060
  core-site.xml: |
    <?xml version="1.0" encoding="UTF-8"?>
    <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
    <configuration>
      <property>
      <name>hadoop.security.authentication</name>
        <value>kerberos</value>
      </property>
    </configuration>
    ...

注意，data 内数据结构如下键值对映射：

data:
 文件名_1:
   文件文本内容_1
 文件名_2:
   文件文本内容_2
 文件名_3:
   文件文本内容_3

BE 多盘配置

Doris 的 BE 服务支持多盘挂载，在服务器时代能够很好满足一个计算资源和存储资源不匹配的问题，同时使用多盘也能够很好提高 Doris 的存储效率。在 Kubernetes 上 Doris 同样可以挂载多盘来实现存储效益最大化。在 Kubernetes 上使用多盘需要配合配置文件一起使用。为实现服务和配置解耦，Doris 采用 ConfigMap 来作为配置的承载，实现配置文件动态挂载给服务使用。以下为 BE 服务使用 ConfigMap 来承载配置文件，挂载两块盘供BE使用的 doriscluster 配置：

apiVersion: doris.selectdb.com/v1
kind: DorisCluster
metadata:
  labels:
    app.kubernetes.io/name: doriscluster
  name: doriscluster-sample-storageclass1
spec:
  feSpec:
    replicas: 3
    image: selectdb/doris.fe-ubuntu:2.0.2
    limits:
      cpu: 8
      memory: 16Gi
    requests:
      cpu: 8
      memory: 16Gi
    persistentVolumes:
    - mountPath: /opt/apache-doris/fe/doris-meta
      name: storage0
      persistentVolumeClaimSpec:
        # when use specific storageclass, the storageClassName should reConfig, example as annotation.
        #storageClassName: openebs-jiva-csi-default
        accessModes:
        - ReadWriteOnce
        resources:
          # notice: if the storage size less 5G, fe will not start normal.
          requests:
            storage: 100Gi
    - mountPath: /opt/apache-doris/fe/log
      name: storage1
      persistentVolumeClaimSpec:
        # when use specific storageclass, the storageClassName should reConfig, example as annotation.
        #storageClassName: openebs-jiva-csi-default
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 100Gi
  beSpec:
    replicas: 3
    image: selectdb/doris.be-ubuntu:2.0.2
    limits:
      cpu: 8
      memory: 16Gi
    requests:
      cpu: 8
      memory: 16Gi
    configMapInfo:
      configMapName: be-configmap
      resolveKey: be.conf
    persistentVolumes:
    - mountPath: /opt/apache-doris/be/storage
      name: storage2
      persistentVolumeClaimSpec:
        # when use specific storageclass, the storageClassName should reConfig, example as annotation.
        #storageClassName: openebs-jiva-csi-default
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 100Gi
    - mountPath: /opt/apache-doris/be/storage1
      name: storage3
      persistentVolumeClaimSpec:
        # when use specific storageclass, the storageClassName should reConfig, example as annotation.
        #storageClassName: openebs-jiva-csi-default
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 100Gi
    - mountPath: /opt/apache-doris/be/log
      name: storage4
      persistentVolumeClaimSpec:
        # when use specific storageclass, the storageClassName should reConfig, example as annotation.
        #storageClassName: openebs-jiva-csi-default
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 100Gi

与默认样例相比增加了 configMapInfo 的配置，同时也增加了一个 persistentVolumeClaimSpec 的配置，persistentVolumeClaimSpec (opens in a new tab) 完全遵循 Kubernetes 原生资源 PVC spec 的定义格式。样例中 configMapInfo 标识 BE 部署后使用同 namespace 下哪一个 ConfigMap 以及哪一个 key 对应的内容作为配置文件启动，其中 key 为必须为 be.conf。以下为需要预先部署的配合上述 doriscluster ConfigMap 样例：

apiVersion: v1
kind: ConfigMap
metadata:
  name: be-configmap
  labels:
    app.kubernetes.io/component: be
data:
  be.conf: |
    CUR_DATE=`date +%Y%m%d-%H%M%S`
 
    PPROF_TMPDIR="$DORIS_HOME/log/"
 
    JAVA_OPTS="-Xmx1024m -DlogPath=$DORIS_HOME/log/jni.log -Xloggc:$DORIS_HOME/log/be.gc.log.$CUR_DATE -Djavax.security.auth.useSubjectCredsOnly=false -Dsun.java.command=DorisBE -XX:-CriticalJNINatives -DJDBC_MIN_POOL=1 -DJDBC_MAX_POOL=100 -DJDBC_MAX_IDLE_TIME=300000 -DJDBC_MAX_WAIT_TIME=5000"
 
    # For jdk 9+, this JAVA_OPTS will be used as default JVM options
    JAVA_OPTS_FOR_JDK_9="-Xmx1024m -DlogPath=$DORIS_HOME/log/jni.log -Xlog:gc:$DORIS_HOME/log/be.gc.log.$CUR_DATE -Djavax.security.auth.useSubjectCredsOnly=false -Dsun.java.command=DorisBE -XX:-CriticalJNINatives -DJDBC_MIN_POOL=1 -DJDBC_MAX_POOL=100 -DJDBC_MAX_IDLE_TIME=300000 -DJDBC_MAX_WAIT_TIME=5000"
 
    # since 1.2, the JAVA_HOME need to be set to run BE process.
    # JAVA_HOME=/path/to/jdk/
 
    # https://github.com/apache/doris/blob/master/docs/zh-CN/community/developer-guide/debug-tool.md#jemalloc-heap-profile
    # https://jemalloc.net/jemalloc.3.html
    JEMALLOC_CONF="percpu_arena:percpu,background_thread:true,metadata_thp:auto,muzzy_decay_ms:15000,dirty_decay_ms:15000,oversize_threshold:0,lg_tcache_max:20,prof:false,lg_prof_interval:32,lg_prof_sample:19,prof_gdump:false,prof_accum:false,prof_leak:false,prof_final:false"
    JEMALLOC_PROF_PRFIX=""
 
    # INFO, WARNING, ERROR, FATAL
    sys_log_level = INFO
 
    # ports for admin, web, heartbeat service
    be_port = 9060
    webserver_port = 8040
    heartbeat_service_port = 9050
    brpc_port = 8060
    
    storage_root_path = /opt/apache-doris/be/storage,medium:ssd;/opt/apache-doris/be/storage1,medium:ssd

在使用多盘时，ConfigMap 中 storage_root_path 对应值中的路径要与 doriscluster 中 persistentVolume 各个挂载路径对应。storage_root_path (opens in a new tab) 对应的书写规则请参考链接中文档。在使用云盘的情形下，介质统一使用 SSD。

访问 Doris 集群服务扩缩容

持久化存储 与 ConfigMap

StorageClass

定制化 ConfigMap

为 conf 目录添加特殊配置文件

BE 多盘配置

持久化存储与 ConfigMap