目前Druid集群版本为0.11.0，新版本0.12.1已支持Druid SQL和Redis，考虑到Druid新特性以及性能的提升，因此需要将Druid从0.11.0版本升级到0.12.1版本，下面将对Druid升级步骤做详细的介绍，升级时请严格按照此步骤进行升级，以免出现一些不可预知的问题。
Druid官网下载druid-0.12.1-bin.tar.gz和mysql-metadata-storage-0.12.1.tar.gz
- 解压druid-0.12.1-bin.tar.gz
[work@druid]$ tar -zxvf druid-0.12.1-bin.tar.gz [work@druid]$ rm -rf druid-0.12.1-bin.tar.gz- 解压mysql-metadata-storage-0.12.1.tar.gz
[work@druid]$ tar -zxvf mysql-metadata-storage-0.12.1.tar.gz -C druid-0.12.1/extensions/ [work@druid]$ rm -rf mysql-metadata-storage-0.12.1.tar.gz[work@druid druid-0.11.0]$ cd conf/druid/_common [work@druid _common]$ vi common.runtime.properties# If you specify `druid.extensions.loadList=[]`, Druid won‘t load any extension from file system. # If you don‘t specify `druid.extensions.loadList`, Druid will load all the extensions under root extension directory. # More info: http://druid.io/docs/latest/operations/including-extensions.html druid.extensions.loadList=["druid-kafka-eight", "druid-hdfs-storage", "druid-histogram", "druid-datasketches", "druid-lookups-cached-global", "mysql-metadata-storage"] # If you have a different version of Hadoop, place your Hadoop client jar files in your hadoop-dependencies directory # and uncomment the line below to point to your directory. #druid.extensions.hadoopDependenciesDir=/my/dir/hadoop-dependencies # # Logging # # Log all runtime properties on startup. Disable to avoid logging properties on startup: druid.startup.logging.logProperties=true # # Zookeeper # druid.zk.service.host=172.16.XXX.XXX:2181 druid.zk.paths.base=/druid # # Metadata storage # # For Derby server on your Druid Coordinator (only viable in a cluster with a single Coordinator, no fail-over): #druid.metadata.storage.type=derby #druid.metadata.storage.connector.connectURI=jdbc:derby://localhost:1527/var/druid/metadata.db;create=true #druid.metadata.storage.connector.host=localhost #druid.metadata.storage.connector.port=1527 # For MySQL: druid.metadata.storage.type=mysql druid.metadata.storage.connector.connectURI=jdbc:mysql://172.16.XXX.XXX:3306/druid druid.metadata.storage.connector.user=root druid.metadata.storage.connector.password=123456 # For PostgreSQL: #druid.metadata.storage.type=postgresql #druid.metadata.storage.connector.connectURI=jdbc:postgresql://db.example.com:5432/druid #druid.metadata.storage.connector.user=... #druid.metadata.storage.connector.password=... # # Deep storage # # For local disk (only viable in a cluster if this is a network mount): #druid.storage.type=local #druid.storage.storageDirectory=var/druid/segments # For HDFS: druid.storage.type=hdfs druid.storage.storageDirectory=/druid/segments # For S3: #druid.storage.type=s3 #druid.storage.bucket=your-bucket #druid.storage.baseKey=druid/segments #druid.s3.accessKey=... #druid.s3.secretKey=... # # Indexing service logs # # For local disk (only viable in a cluster if this is a network mount): #druid.indexer.logs.type=file #druid.indexer.logs.directory=var/druid/indexing-logs # For HDFS: druid.indexer.logs.type=hdfs druid.indexer.logs.directory=/druid/indexing-logs # For S3: #druid.indexer.logs.type=s3 #druid.indexer.logs.s3Bucket=your-bucket #druid.indexer.logs.s3Prefix=druid/indexing-logs # # Service discovery # druid.selectors.indexing.serviceName=druid/overlord druid.selectors.coordinator.serviceName=druid/coordinator # # Monitoring # druid.monitoring.monitors=["io.druid.java.util.metrics.JvmMonitor"] druid.emitter=logging druid.emitter.logging.logLevel=info # Storage type of double columns # ommiting this will lead to index double as float at the storage layer druid.indexing.doubleStorage=double[work@druid _common]$ cp core-site.xml /alidata/server/druid-0.12.1/conf/druid/_common/ [work@druid _common]$ cp hdfs-site.xml /alidata/server/druid-0.12.1/conf/druid/_common/ [work@druid _common]$ cp mapred-site.xml /alidata/server/druid-0.12.1/conf/druid/_common/ [work@druid _common]$ cp yarn-site.xml /alidata/server/druid-0.12.1/conf/druid/_common/[work@druid broker]$ vi runtime.propertiesdruid.service=druid/broker druid.host=172.16.XXX.XXX druid.port=8082 # HTTP server threads druid.broker.http.numConnections=5 druid.server.http.numThreads=9 # Processing threads and buffers druid.processing.buffer.sizeBytes=256000000 druid.processing.numThreads=2 # Query cache (we use a small local cache) druid.broker.cache.useCache=true druid.broker.cache.populateCache=true druid.cache.type=local druid.cache.sizeInByte=2000000000 # enable druid sql and http druid.sql.enable=true druid.sql.avatica.enable=true druid.sql.http.enable=true备注：broker、overlord、coordinator、historical、middleManager等目录下的runtime.properties新增属性druid.host=ipAddress
work@druid middleManager]$ vi runtime.propertiesdruid.service=druid/middleManager druid.host=172.16.XXX.XXX druid.port=8091 # Number of tasks per middleManager druid.worker.capacity=20 # Task launch parameters druid.indexer.runner.javaOpts=-server -Xmx2g -Duser.timezone=UTC -Dfile.encoding=UTF-8 -Djava.util.logging.manager=org.apache.logging.log4j.jul.LogManager druid.indexer.task.baseTaskDir=var/druid/task # HTTP server threads druid.server.http.numThreads=9 # Processing threads and buffers on Peons druid.indexer.fork.property.druid.processing.buffer.sizeBytes=256000000 druid.indexer.fork.property.druid.processing.numThreads=2 # Hadoop indexing druid.indexer.task.hadoopWorkingPath=var/druid/hadoop-tmp druid.indexer.task.defaultHadoopCoordinates=["org.apache.hadoop:hadoop-client:2.7.3"][work@druid druid-0.12.1]$ nohup >> nohuphistorical.out java `cat conf/druid/historical/jvm.config | xargs` -cp conf/druid/_common:conf/druid/historical:lib/* io.druid.cli.Main server historical &[work@druid druid-0.12.1]$ nohup >> logs/nohupoverlord.out java `cat conf/druid/overlord/jvm.config | xargs` -cp conf/druid/_common:conf/druid/overlord:lib/* io.druid.cli.Main server overlord &- 禁止Overlor再向指定服务的MiddleManager分配任务
http://<MiddleManager_IP:PORT>/druid/worker/v1/disable- 查看指定MiddleManager任务列表
http://<MiddleManager_IP:PORT>/druid/worker/v1/tasks- 启动MiddleManager
[work@druid druid-0.12.1]$ nohup >> logs/nohupmiddleManager.out java `cat conf/druid/middleManager/jvm.config | xargs` -cp conf/druid/_common:conf/druid/middleManager:lib/* io.druid.cli.Main server middleManager &- 启用Overlord向指定MiddleManager分配任务
http://<MiddleManager_IP:PORT>/druid/worker/v1/enable[work@druid druid-0.12.1]$ nohup >> nohupbroker.out java `cat conf/druid/broker/jvm.config | xargs` -cp conf/druid/_common:conf/druid/broker:lib/* io.druid.cli.Main server broker &[work@druid druid-0.12.1]$ nohup >> nohupcoordinator.out java `cat conf/druid/coordinator/jvm.config | xargs` -cp conf/druid/_common:conf/druid/coordinator:lib/* io.druid.cli.Main server coordinator &至此，Druid就完成从0.11.0版本升级到0.12.1版本。
原文：https://www.cnblogs.com/yinghun/p/9265195.html