os: centos 7.6.1810
db: hbase 2.3.x
hadoop 2.10.x
zookeeper 3.6
jdk 1.8
hbase 是运行在 hadoop 之上，hadoop 又是运行在 jvm 之上。
索引 hbase、hadoop、jdk 的版本选择就得考虑兼容性
https://hbase.apache.org/book.html#java
https://hbase.apache.org/book.html#hadoop
节点规划，实验用
192.168.56.221 hb1
192.168.56.222 hb2
192.168.56.223 hb3
版本
# cat /etc/centos-release
CentOS Linux release 7.6.1810 (Core)
hadoop 2.10.x
所有节点创建用户，保持 id 一致
# groupadd -g 600 hadoop;
useradd -u 600 -g hadoop -G hadoop hadoop;
# passwd hadoop
所有节点 hadoop 用户下配置到其余节点 ssh 信任
# su - hadoop
$ ssh-keygen -t rsa
$ cd /home/hadoop/.ssh/
$ ls -l
total 8
-rw------- 1 hadoop hadoop 1675 Aug 19 15:21 id_rsa
-rw-r--r-- 1 hadoop hadoop 392 Aug 19 15:21 id_rsa.pub
$ touch authorized_keys;
chmod 600 authorized_keys;
$ ssh-copy-id hadoop@hb1;
$ ssh-copy-id hadoop@hb2;
$ ssh-copy-id hadoop@hb3;
$ chmod 700 ../.ssh/
# vi /etc/ssh/sshd_config
RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile .ssh/authorized_keys
# service sshd restart
所有节点下载安装 hadoop(也可以从一台机器下载，然后拷贝到其余节点)
# cd /usr/local/
# wget https://downloads.apache.org/hadoop/common/hadoop-2.10.1/hadoop-2.10.1.tar.gz
# tar -zxvf ./hadoop-2.10.1.tar.gz
# chown -R hadoop:hadoop ./hadoop-2.10.1
# ln -s ./hadoop-2.10.1 hadoop-2.10
所有节点 /etc/profile 最后面追加环境变量
# vi /etc/profile
export HADOOP_HOME=/usr/local/hadoop-2.10
export PATH=.:${HADOOP_HOME}/bin:${HADOOP_HOME}/sbin:${PATH}
所有节点重新登录，或者 source 下环境变量文件
# source /etc/profile
所有节点创建一些必要的目录
# su - hadoop
$
$ mkdir -p /home/hadoop/{data,tmp,name,journal}
hadoop 2.10.x 参数配置
仅在 hb1 节点下编辑如下文件。
- hadoop-env.sh 、yarn-env.sh 配置JAVA_HOME
$ vi ./etc/hadoop/hadoop-env.sh
export JAVA_HOME=/usr/lib/jvm/java-1.8.0
$ vi ./etc/hadoop/yarn-env.sh
export JAVA_HOME=/usr/lib/jvm/java-1.8.0
2．core-site.xml
不同节点需要适当调整下
$ vi ./etc/hadoop/core-site.xml
<property>
<name>fs.defaultFS</name>
<value>hdfs://hadoop-ha</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/home/hadoop/tmp</value>
</property>
<property>
<name>ha.zookeeper.quorum</name>
<value>hb1:2181,hb2:2181,hd3:2181</value>
</property>
3．hdfs-site.xml
$ vi ./etc/hadoop/hdfs-site.xml
<property>
<name>dfs.nameservices</name>
<value>hadoop-ha</value>
</property>
<property>
<name>dfs.ha.namenodes.hadoop-ha</name>
<value>name-1,name-2</value>
</property>
<property>
<name>dfs.namenode.rpc-address.hadoop-ha.name-1</name>
<value>hb1:9000</value>
</property>
<property>
<name>dfs.namenode.http-address.hadoop-ha.name-1</name>
<value>hb1:50070</value>
</property>
<property>
<name>dfs.namenode.rpc-address.hadoop-ha.name-2</name>
<value>hb2:9000</value>
</property>
<property>
<name>dfs.namenode.http-address.hadoop-ha.name-2</name>
<value>hb2:50070</value>
</property>
<property>
<name>dfs.namenode.shared.edits.dir</name>
<value>qjournal://hb1:8485;hb2:8485;hb3:8485/hadoop-ha</value>
</property>
<property>
<name>dfs.journalnode.edits.dir</name>
<value>/home/hadoop/journal</value>
</property>
<property>
<name>dfs.ha.automatic-failover.enabled</name>
<value>true</value>
</property>
<property>
<name>dfs.client.failover.proxy.provider.hadoop-ha</name>
<value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
</property>
<property>
<name>dfs.ha.fencing.methods</name>
<value>sshfence</value>
</property>
<property>
<name>dfs.ha.fencing.ssh.private-key-files</name>
<value>/home/hadoop/.ssh/id_rsa</value>
</property>
<property>
<name>dfs.ha.fencing.ssh.connect-timeout</name>
<value>30000</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>/home/hadoop/name</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>/home/hadoop/data</value>
</property>
<property>
<name>dfs.replication</name>
<value>2</value>
</property>
4．mapred-site.xml
$ cp ./etc/hadoop/mapred-site.xml.template ./etc/hadoop/mapred-site.xml
$ vi ./etc/hadoop/mapred-site.xml
<!-- mapreduce运行在yarn上 -->
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
5．yarn-site.xml
$ vi ./etc/hadoop/yarn-site.xml
<property>
<name>yarn.resourcemanager.ha.enabled</name>
<value>true</value>
</property>
<property>
<name>yarn.resourcemanager.cluster-id</name>
<value>yarn-ha</value>
</property>
<property>
<name>yarn.resourcemanager.ha.rm-ids</name>
<value>resource-1,resource-2</value>
</property>
<property>
<name>yarn.resourcemanager.hostname.resource-1</name>
<value>hb1</value>
</property>
<property>
<name>yarn.resourcemanager.hostname.resource-2</name>
<value>hb2</value>
</property>
<property>
<name>yarn.resourcemanager.zk-address</name>
<value>hb1:2181,hb2:2181,hb3:2181</value>
</property>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
6．编辑 slaves 文件(所有数据节点)
$ vi ./etc/hadoop/slaves
hb1
hb2
hb3
hb1 节点上本地备份
cp /usr/local/hadoop-2.10/etc/hadoop/core-site.xml /home/hadoop/tmp_peiyb/core-site.xml;
cp /usr/local/hadoop-2.10/etc/hadoop/hdfs-site.xml /home/hadoop/tmp_peiyb/hdfs-site.xml;
cp /usr/local/hadoop-2.10/etc/hadoop/mapred-site.xml /home/hadoop/tmp_peiyb/mapred-site.xml;
cp /usr/local/hadoop-2.10/etc/hadoop/slaves /home/hadoop/tmp_peiyb/slaves;
cp /usr/local/hadoop-2.10/etc/hadoop/yarn-site.xml /home/hadoop/tmp_peiyb/yarn-site.xml;
cp /usr/local/hadoop-2.10/etc/hadoop/hadoop-env.sh /home/hadoop/tmp_peiyb/hadoop-env.sh;
cp /usr/local/hadoop-2.10/etc/hadoop/yarn-env.sh /home/hadoop/tmp_peiyb/yarn-env.sh;
hb1 节点上参数文件同步到 hb2、hb3 节点上
scp /usr/local/hadoop-2.10/etc/hadoop/core-site.xml hadoop@hb2:/usr/local/hadoop-2.10/etc/hadoop/core-site.xml;
scp /usr/local/hadoop-2.10/etc/hadoop/hdfs-site.xml hadoop@hb2:/usr/local/hadoop-2.10/etc/hadoop/hdfs-site.xml;
scp /usr/local/hadoop-2.10/etc/hadoop/mapred-site.xml hadoop@hb2:/usr/local/hadoop-2.10/etc/hadoop/mapred-site.xml;
scp /usr/local/hadoop-2.10/etc/hadoop/slaves hadoop@hb2:/usr/local/hadoop-2.10/etc/hadoop/slaves;
scp /usr/local/hadoop-2.10/etc/hadoop/yarn-site.xml hadoop@hb2:/usr/local/hadoop-2.10/etc/hadoop/yarn-site.xml;
scp /usr/local/hadoop-2.10/etc/hadoop/hadoop-env.sh hadoop@hb2:/usr/local/hadoop-2.10/etc/hadoop/hadoop-env.sh;
scp /usr/local/hadoop-2.10/etc/hadoop/yarn-env.sh hadoop@hb2:/usr/local/hadoop-2.10/etc/hadoop/yarn-env.sh;
scp /usr/local/hadoop-2.10/etc/hadoop/core-site.xml hadoop@hb3:/usr/local/hadoop-2.10/etc/hadoop/core-site.xml;
scp /usr/local/hadoop-2.10/etc/hadoop/hdfs-site.xml hadoop@hb3:/usr/local/hadoop-2.10/etc/hadoop/hdfs-site.xml;
scp /usr/local/hadoop-2.10/etc/hadoop/mapred-site.xml hadoop@hb3:/usr/local/hadoop-2.10/etc/hadoop/mapred-site.xml;
scp /usr/local/hadoop-2.10/etc/hadoop/slaves hadoop@hb3:/usr/local/hadoop-2.10/etc/hadoop/slaves;
scp /usr/local/hadoop-2.10/etc/hadoop/yarn-site.xml hadoop@hb3:/usr/local/hadoop-2.10/etc/hadoop/yarn-site.xml;
scp /usr/local/hadoop-2.10/etc/hadoop/hadoop-env.sh hadoop@hb3:/usr/local/hadoop-2.10/etc/hadoop/hadoop-env.sh;
scp /usr/local/hadoop-2.10/etc/hadoop/yarn-env.sh hadoop@hb3:/usr/local/hadoop-2.10/etc/hadoop/yarn-env.sh;
格式化
hb1、hb2、hb3 节点依次启动JN。
$ hadoop-daemon.sh start journalnode
hb1 主节点执行,对HDFS进行格式化
$ hdfs namenode -format
hb1节点执行，启动NN
$ hadoop-daemon.sh start namenode
hb2节点执行，启动申请 standby 文件
$ hdfs namenode -bootstrapStandby
hb1 主节点执行,主节点切换控制信息进行格式化(仅执行一次)
$ hdfs zkfc -formatZK
启动 hadoop
hb1 主节点执行
$ start-dfs.sh
$ jps
hb1 主节点执行
$ start-yarn.sh
$ jps
849 JournalNode
2626 ResourceManager
2805 NodeManager
2470 DFSZKFailoverController
1063 NameNode
2108 DataNode
3213 Jps
查看 hdfs
$ hdfs dfsadmin -report
Configured Capacity: 151298519040 (140.91 GB)
Present Capacity: 126000730112 (117.35 GB)
DFS Remaining: 126000717824 (117.35 GB)
DFS Used: 12288 (12 KB)
DFS Used%: 0.00%
Under replicated blocks: 0
Blocks with corrupt replicas: 0
Missing blocks: 0
Missing blocks (with replication factor 1): 0
Pending deletion blocks: 0
-------------------------------------------------
Live datanodes (3):
Name: 192.168.56.221:50010 (hb1)
Hostname: hb1
Decommission Status : Normal
Configured Capacity: 50432839680 (46.97 GB)
DFS Used: 4096 (4 KB)
Non DFS Used: 8434872320 (7.86 GB)
DFS Remaining: 41997963264 (39.11 GB)
DFS Used%: 0.00%
DFS Remaining%: 83.28%
Configured Cache Capacity: 0 (0 B)
Cache Used: 0 (0 B)
Cache Remaining: 0 (0 B)
Cache Used%: 100.00%
Cache Remaining%: 0.00%
Xceivers: 1
Last contact: Tue Aug 24 11:09:44 CST 2021
Last Block Report: Tue Aug 24 11:07:50 CST 2021
Name: 192.168.56.222:50010 (hb2)
Hostname: hb2
Decommission Status : Normal
Configured Capacity: 50432839680 (46.97 GB)
DFS Used: 4096 (4 KB)
Non DFS Used: 8430780416 (7.85 GB)
DFS Remaining: 42002055168 (39.12 GB)
DFS Used%: 0.00%
DFS Remaining%: 83.28%
Configured Cache Capacity: 0 (0 B)
Cache Used: 0 (0 B)
Cache Remaining: 0 (0 B)
Cache Used%: 100.00%
Cache Remaining%: 0.00%
Xceivers: 1
Last contact: Tue Aug 24 11:09:44 CST 2021
Last Block Report: Tue Aug 24 11:07:50 CST 2021
Name: 192.168.56.223:50010 (hb3)
Hostname: hb3
Decommission Status : Normal
Configured Capacity: 50432839680 (46.97 GB)
DFS Used: 4096 (4 KB)
Non DFS Used: 8432136192 (7.85 GB)
DFS Remaining: 42000699392 (39.12 GB)
DFS Used%: 0.00%
DFS Remaining%: 83.28%
Configured Cache Capacity: 0 (0 B)
Cache Used: 0 (0 B)
Cache Remaining: 0 (0 B)
Cache Used%: 100.00%
Cache Remaining%: 0.00%
Xceivers: 1
Last contact: Tue Aug 24 11:09:44 CST 2021
Last Block Report: Tue Aug 24 11:07:50 CST 2021
http://192.168.56.221:8088 查看资源
验证 hdfs
$ hadoop fs -mkdir -p /peiyb/tmp
$ hadoop fs -ls -R /
drwxr-xr-x - hadoop supergroup 0 2021-08-23 15:21 /peiyb
drwxr-xr-x - hadoop supergroup 0 2021-08-23 15:21 /peiyb/tmp
验证 mapreduce
$ hadoop jar /usr/local/hadoop-2.10/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.10.1.jar pi 2 1000
参考:
http://hadoop.apache.org/docs/r3.1.0/hadoop-project-dist/hadoop-common/SingleCluster.html
http://hadoop.apache.org/docs/r3.1.0/hadoop-project-dist/hadoop-common/ClusterSetup.html
https://blog.csdn.net/qq_37823605/article/details/90477863