一、Docker安装Hadoop集群
Hadoop是一个分布式计算框架,可以分布式处理大量数据,因此安装Hadoop通常需要安装多个节点并进行集群化。使用Docker进行Hadoop集群安装可以方便快捷地完成这一过程。
以下是一个简单的Docker-compose文件,用于安装一个具有一个NameNode和两个DataNode的Hadoop集群。
version: '3'
services:
namenode:
image: sequenceiq/hadoop-docker:2.7.1
container_name: namenode
hostname: namenode
domainname: hadoop
ports:
- "2222:22"
- "50070:50070"
environment:
- CLUSTER_NAME=test
- NODE_TYPE=NAMENODE
datanode1:
image: sequenceiq/hadoop-docker:2.7.1
container_name: datanode1
hostname: datanode1
domainname: hadoop
environment:
- CLUSTER_NAME=test
- NODE_TYPE=DATANODE
links:
- namenode
ports:
- "50075"
datanode2:
image: sequenceiq/hadoop-docker:2.7.1
container_name: datanode2
hostname: datanode2
domainname: hadoop
environment:
- CLUSTER_NAME=test
- NODE_TYPE=DATANODE
links:
- namenode
ports:
- "50075"
以上配置文件中,定义了一个名为test的集群,包括一个NameNode(容器名为namenode),和两个DataNode(容器名为datanode1和datanode2)。每个容器都映射了必要的端口,并设置了环境变量和容器之间的链接关系。
二、Docker安装Hadoop Hive Spark
Hive是一个数据仓库,允许开发人员使用SQL查询分析大数据集,并将查询转化为MapReduce任务。Spark是一个快速、通用的大数据处理引擎,具有内存计算的优势。
以下是一个使用Docker-compose安装Hadoop、Hive、Spark环境的示例。
version: '3'
services:
namenode:
image: sequenceiq/hadoop-docker:2.7.1
container_name: namenode
hostname: namenode
domainname: hadoop
ports:
- "2222:22"
- "50070:50070"
environment:
- CLUSTER_NAME=test
- NODE_TYPE=NAMENODE
datanode1:
image: sequenceiq/hadoop-docker:2.7.1
container_name: datanode1
hostname: datanode1
domainname: hadoop
environment:
- CLUSTER_NAME=test
- NODE_TYPE=DATANODE
links:
- namenode
ports:
- "50075"
datanode2:
image: sequenceiq/hadoop-docker:2.7.1
container_name: datanode2
hostname: datanode2
domainname: hadoop
environment:
- CLUSTER_NAME=test
- NODE_TYPE=DATANODE
links:
- namenode
ports:
- "50075"
hive:
image: sequenceiq/hadoop-docker:2.6.0
container_name: hive
hostname: hive
domainname: hadoop
environment:
- CLUSTER_NAME=test
- NODE_TYPE=HIVE
links:
- namenode
ports:
- "10000:10000"
spark:
image: sequenceiq/spark:1.6.0
container_name: spark
hostname: spark
environment:
- ENABLE_INIT_DAEMON=false
- INIT_DAEMON_BASE_URI=http://init-daemon:8080
- SPARK_MASTER_URL=spark://spark:7077
- SPARK_DRIVER_MEMORY=1g
- SPARK_EXECUTOR_MEMORY=1g
- SPARK_EXECUTOR_CORES=1
init-daemon:
image: sequenceiq/init
container_name: init-daemon
三、Docker安装Hadoop单机
如果您只需要在单个容器中运行Hadoop,则可以使用以下Dockerfile创建镜像:
FROM sequenceiq/hadoop-docker:2.7.1
MAINTAINER Your Name "your.name@example.com"
ADD core-site.xml /etc/hadoop/core-site.xml
ADD hdfs-site.xml /etc/hadoop/hdfs-site.xml
ADD yarn-site.xml /etc/hadoop/yarn-site.xml
ADD mapred-site.xml /etc/hadoop/mapred-site.xml
RUN mkdir -p /opt/hadoop/logs \
&& chown -R hdfs /opt/hadoop/logs \
&& chmod -R 755 /opt/hadoop/logs
以上Dockerfile做了以下操作:
- 继承Hadoop镜像
- 添加必要的核心配置文件
- 建立/opt/hadoop/logs目录,并确保hdfs用户可以访问该目录。
四、Docker安装Hadoop命令
如果您只需要在多个容器中运行Hadoop命令,则可以使用以下Dockerfile创建镜像:
FROM sequenceiq/hadoop-docker:2.7.1
MAINTAINER Your Name "your.name@example.com"
ADD start-hadoop.sh /start-hadoop.sh
CMD ["/bin/bash", "/start-hadoop.sh"]
以上Dockerfile做了以下操作:
- 继承Hadoop镜像
- 添加一个名为start-hadoop.sh的脚本
- 在容器启动时运行start-hadoop.sh。
五、Docker安装Hadoop Hive
以下是使用Docker-compose安装Hadoop Hive的示例。
version: '3'
services:
namenode:
image: sequenceiq/hadoop-docker:2.7.1
container_name: namenode
hostname: namenode
domainname: hadoop
ports:
- "2222:22"
- "50070:50070"
environment:
- CLUSTER_NAME=test
- NODE_TYPE=NAMENODE
datanode1:
image: sequenceiq/hadoop-docker:2.7.1
container_name: datanode1
hostname: datanode1
domainname: hadoop
environment:
- CLUSTER_NAME=test
- NODE_TYPE=DATANODE
links:
- namenode
ports:
- "50075"
datanode2:
image: sequenceiq/hadoop-docker:2.7.1
container_name: datanode2
hostname: datanode2
domainname: hadoop
environment:
- CLUSTER_NAME=test
- NODE_TYPE=DATANODE
links:
- namenode
ports:
- "50075"
hive:
image: sequenceiq/hadoop-docker:2.6.0
container_name: hive
hostname: hive
domainname: hadoop
environment:
- CLUSTER_NAME=test
- NODE_TYPE=HIVE
links:
- namenode
ports:
- "10000:10000"
六、Docker安装Hadoop3.1.3
以下是使用Docker-compose安装Hadoop-3.1.3的示例。
version: "3"
services:
namenode:
image: bde2020/hadoop-namenode:1.1.0-hadoop3.1.3-java8
restart: always
container_name: namenode
hostname: namenode
environment:
- CLUSTER_NAME=test
ports:
- "9870:9870"
- "9000:9000"
- "9820:9820"
datanode:
image: bde2020/hadoop-datanode:1.1.0-hadoop3.1.3-java8
restart: always
container_name: datanode
hostname: datanode
environment:
- CLUSTER_NAME=test
links:
- namenode
ports:
- "9864:9864"
- "9866:9866"
七、Docker安装HomeAssistant
以下是一个简单的Docker-compose文件,用于安装HomeAssistant。
version: '3'
services:
homeassistant:
image: homeassistant/raspberrypi3-homeassistant:0.101.3
container_name: homeassistant
ports:
- "8123:8123"
volumes:
- ./config:/config
八、Docker安装MySQL
以下是使用Docker-compose安装MySQL的示例。
version: '3'
services:
db:
image: mysql
container_name: mysql
ports:
- "3306:3306"
environment:
MYSQL_ROOT_PASSWORD: example
MYSQL_DATABASE: example_database
volumes:
- ./data:/var/lib/mysql
九、Docker搭建Hadoop集群
以下是使用Docker-compose搭建Hadoop集群的示例(3个NodeManager,1个ResourceManager,1个NameNode和一个DataNode)。
version: '3'
services:
node-manager-1:
image: sequenceiq/hadoop-docker:2.7.1
environment:
- NODE_TYPE=NODEMANAGER
- "SERVICE_PRECONDITION=node-master:8040"
hostname: node-manager-1
container_name: node-manager-1
node-manager-2:
image: sequenceiq/hadoop-docker:2.7.1
environment:
- NODE_TYPE=NODEMANAGER
- "SERVICE_PRECONDITION=node-master:8040"
hostname: node-manager-2
container_name: node-manager-2
node-manager-3:
image: sequenceiq/hadoop-docker:2.7.1
environment:
- NODE_TYPE=NODEMANAGER
- "SERVICE_PRECONDITION=node-master:8040"
hostname: node-manager-3
container_name: node-manager-3
resource-manager:
image: sequenceiq/hadoop-docker:2.7.1
environment:
- NODE_TYPE=RESOURCEMANAGER
hostname: resource-manager
container_name: resource-manager
name-node:
image: sequenceiq/hadoop-docker:2.7.1
environment:
- NODE_TYPE=NAMENODE
- "YARN_NODEMANAGER_CONTAINER_EXECUTOR_EXECUTION_THREAD_SLEEP_MS=5000"
- "HDFS_REPLICATION=1"
hostname: name-node
container_name: name-node
data-node:
image: sequenceiq/hadoop-docker:2.7.1
environment:
- NODE_TYPE=DATANODE
- "SERVICE_PRECONDITION=name-node:8020"
hostname: data-node
container_name: data-node
links:
- name-node