【手动验证：任意2个节点间是否实现 双向 ssh免密登录】
弄懂通信原理和集群的容错性
任意2个节点间实现双向 ssh免密登录，默认在~目录下
【实现上步后，在其中任一节点安装\配置hadoop后，可以将整个安装目录scp复制到各个节点：：：：各个节点的文件内容是一样的！！！！】
[hadoop@bigdata-server-03 ~]$ jps
9217 SecondaryNameNode
9730 Jps
9379 ResourceManager
9497 NodeManager
8895 NameNode
9039 DataNode
[hadoop@bigdata-server-01 ~]$ ssh bigdata-server-01
Last login: Sat Nov 25 23:13:06 2017 from 120.178.18.4
[hadoop@bigdata-server-01 ~]$ jps
19035 Jps
18670 DataNode
[hadoop@bigdata-server-01 ~]$ sh bigdata-server-02
Last login: Sat Nov 25 23:14:03 2017 from 120.0.0.1
[hadoop@bigdata-server-01 ~]$ jps
19035 Jps
18670 DataNode
【BASE】
https://*.com/questions/26346277/scp-files-from-local-to-remote-machine-error-no-such-file-or-directory
http://www.tldp.org/LDP/lame/LAME/linux-admin-made-easy/removing-user-accounts.html $ whoami
user1
$ su - user2
Password:
$ whoami
user2
$ exit
logout http://www.binarytides.com/linux-command-shutdown-reboot-restart-system/ [2.9.0]
http://www.server-world.info/en/note?os=CentOS_7&p=hadoop
http://www.server-world.info/en/note?os=CentOS_7&p=jdk8
http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/ClusterSetup.html#Configuring_Environment_of_Hadoop_Daemons
http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/core-default.xml http://www.codecoffee.com/tipsforlinux/articles/22.html
the directory size
du ~ -s
3节点 spark-yarn 配置
【免密通信模块 】
su - hadoop;
ssh-keygen -t rsa;
cd /usr/hadoop/.ssh/;
cat /etc/hosts;
ssh bigdata-server-01;
ssh bigdata-server-02;
ssh bigdata-server-03;
# passwd hadoop;
ssh-copy-id bigdata-server-01;
ssh-copy-id bigdata-server-02;
ssh-copy-id bigdata-server-03;
cat /etc/ssh/sshd_config
阅读配置信息
【安装spark 】
【安装配置 hadoop】
[root@bigdata-server-02 ~]# cd /usr/local/hadoop
[root@bigdata-server-02 hadoop]# ll -as
total 208
4 drwxr-xr-x 9 bigdata bigdata 4096 Dec 9 03:42 .
4 drwxr-xr-x. 18 root root 4096 Dec 19 21:40 ..
4 drwxr-xr-x 2 bigdata bigdata 4096 Dec 9 03:42 bin
4 drwxr-xr-x 3 bigdata bigdata 4096 Dec 9 03:17 etc
4 drwxr-xr-x 2 bigdata bigdata 4096 Dec 9 03:42 include
4 drwxr-xr-x 3 bigdata bigdata 4096 Dec 9 03:42 lib
4 drwxr-xr-x 4 bigdata bigdata 4096 Dec 9 03:42 libexec
144 -rw-r--r-- 1 bigdata bigdata 147066 Nov 15 03:19 LICENSE.txt
24 -rw-r--r-- 1 bigdata bigdata 20891 Nov 15 03:19 NOTICE.txt
4 -rw-r--r-- 1 bigdata bigdata 1366 Jul 9 2016 README.txt
4 drwxr-xr-x 3 bigdata bigdata 4096 Dec 9 03:17 sbin
4 drwxr-xr-x 4 bigdata bigdata 4096 Dec 9 03:53 share
[root@bigdata-server-02 hadoop]# pwd
/usr/local/hadoop
[root@bigdata-server-02 hadoop]# mkdir mydatanode
[root@bigdata-server-02 hadoop]# mkdir mynamenode
[root@bigdata-server-02 hadoop]#
# add into <configuration> - </configuration> section
<configuration>
<property>
<name>dfs.replication</name>
<value>2</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:///usr/local/hadoop/mydatanode</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:///usr/local/hadoop/mynamenode</value>
</property>
</configuration>
vi etc/hadoop/hdfs-site.xml;
# add into <configuration> - </configuration> section
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://bigdata-server-02:8080/</value>
</property>
</configuration>
#Problem binding to [bigdata-server-01:9000] java.net.BindException: Cannot assign requested address;
#9001
vi etc/hadoop/core-site.xml;
# create new
<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
</configuration>
vi etc/hadoop/mapred-site.xml;
# add into <configuration> - </configuration> section
<configuration>
<property>
<name>yarn.resourcemanager.hostname</name>
<value>bigdata-server-02</value>
</property>
<property>
<name>yarn.nodemanager.hostname</name>
<value>bigdata-server-02</value>
</property>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
</configuration>
vi etc/hadoop/yarn-site.xml;
scp hadoop-3.0.0 root@bigdata-server-01:/usr/local;scp hadoop-3.0.0 root@bigdata-server-03:/usr/local;
【压缩，scp 复制，ssh 解压、创建软连接】
tar -cf hadoop-3.0.0.mycom.tar hadoop-3.0.0;
scp hadoop-3.0.0.mycom.tar root@bigdata-server-01:/usr/local;scp hadoop-3.0.0.mycom.tar root@bigdata-server-03:/usr/local;
ssh bigdata-server-03 "cd /usr/local;tar -xvf hadoop-3.0.0.mycom.tar;ln -s hadoop-3.0.0 hadoop;";
ssh bigdata-server-01 "cd /usr/local;tar -xvf hadoop-3.0.0.mycom.tar;ln -s hadoop-3.0.0 hadoop;";
Hadoop- datanode and node manager not running
https://*.com/questions/32753218/yarn-do-we-need-nodemanager-on-namenode
启动原理 pid
信息存储位置
旧有信息冲突
[root@bigdata-server-02 hadoop]# rm -rf mynamenode/*;rm -rf mydatanode/*;rm -rf /tmp/*hadoop*;rm -rf /tmp/*yarn*; rm -rf /tmp/*pid;
[root@bigdata-server-02 hadoop]# ssh bigdata-server-01 'cd /usr/local/hadoop;rm -rf mynamenode/*;rm -rf mydatanode/*;rm -rf /tmp/*hadoop*;rm -rf /tmp/*yarn*; rm -rf /tmp/*pid;';
[root@bigdata-server-02 hadoop]# ssh bigdata-server-03 'cd /usr/local/hadoop;rm -rf mynamenode/*;rm -rf mydatanode/*;rm -rf /tmp/*hadoop*;rm -rf /tmp/*yarn*; rm -rf /tmp/*pid;';
[root@bigdata-server-02 hadoop]#
ssh bigdata-server-01 'cd /usr/local/hadoop;rm -rf {mydataname,mynamenode}/*';
4 -rwxr-xr-x 1 root root 349 Dec 25 23:12 root_rm_logs_mydn-nn_roottmp.sh
4 -rwxr-xr-x 1 root root 349 Dec 25 23:14 root_rm_mydn-nn_roottmp.sh
4 drwxr-xr-x 2 20415 101 4096 Dec 16 09:12 sbin
4 drwxr-xr-x 4 20415 101 4096 Dec 16 09:12 share
[root@bigdata-server-02 hadoop]# cat root_rm_logs_mydn-nn_roottmp.sh
ssh bigdata-server-01 'cd /usr/local/hadoop;rm -rf {mydatanode,mynamenode}/*;rm -rf /tmp/*;rm -rf logs/*';
ssh bigdata-server-02 'cd /usr/local/hadoop;rm -rf {mydatanode,mynamenode}/*;rm -rf /tmp/*;rm -rf logs/*';
ssh bigdata-server-03 'cd /usr/local/hadoop;rm -rf {mydatanode,mynamenode}/*;rm -rf /tmp/*;rm -rf logs/*';
进一步提升，使用for精简代码
修改密码
passwd
192.268.3.102
192.268.3.103
root 123
192.268.2.40
root 123
2.40-->3.101 ifconfig enp2s0 192.168.3.101 netmask 255.255.254.0
【分析ssh-keygen 】
[root@hadoop3 ~]# rm -rf /root/.ssh
[root@hadoop3 ~]# ssh-keygen -t rsa;
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Created directory '/root/.ssh'.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:CCj5BZDUWU5pNK0kvlJz5VYnbjLYuFwnsMvqWrlgA/Y root@hadoop3
The key's randomart image is:
+---[RSA 2048]----+
|o+o +=o |
|.. *o=.o o . |
|o o *.X o o |
| o = B X + |
|..o * * S |
|o....= |
| +.E. |
|. +.. |
| .oo |
+----[SHA256]-----+
[root@hadoop3 ~]# ll -as /root/.ssh/
总用量 12
0 drwx------ 2 root root 38 7月 12 11:47 .
4 dr-xr-x---. 28 root root 4096 7月 12 11:47 ..
4 -rw------- 1 root root 1679 7月 12 11:47 id_rsa
4 -rw-r--r-- 1 root root 394 7月 12 11:47 id_rsa.pub
[root@hadoop3 ~]#
生成了2个文件
[root@hadoop3 ~]# cat /root/.ssh/id_rsa
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
[root@hadoop3 ~]# cat /root/.ssh/id_rsa.pub
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC8qqdIX6zERPKf7Ed4XUpRnKCaRxZTl4NMCRtI86NFrwIYroaDlSRrI1V3J/+GIdz49YbkPMt+a+RTgJ3KUvv3ZTzT6WGkUlJneyl3iWCHxzbSaXICDMnmmX+RhoDPlWQXu4wlZfrWDjo0NZII7au5ku5YQyTK1OHZFH0+OPKSnzR7mYMfMYHK5ukve6jWIe1+rtweUyWyJcF/3jF2KcgIm6bRJWD26wuuPVfUBLMJn12AbeEgK4EWWLt3886+7w0I4hSYDa09+CZ5vRFcckYMZKV2l6DTz7Mx3oSaeCfzOa703G/wS+YI9lM7G5D12vjRu6Yd4yG59lQRgXouxpkl root@hadoop3
[root@hadoop3 ~]#
[root@hadoop1 ~]# cat /root/.ssh/id_rsa.pub
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC/mSwq7gdDusAiW6gaA8ZAlCWOb9aCv4Bz/2L5JjpWwFPkZUQNpOtnfGRxi4X24Wrk4kq4Boj/mQ3U3sXIpeNz+ZyNVe3OPE3qKVDB2jve5pzeeM7qtWh4Ock30NzpznZFLeY9a+Ic8vDeXPPAEkgibgutibEqWyXuomSCIZGpPlh+HveY6Dtc/oRaoTEfxyLJS0FqyvzRdynCHgwiavbKFyzfL5IQVBRAqBYXLVdC6e4+gSUs1v9DAe/uEOtf5aw9AdScePSUY5AJ1fe2DTucXzci3zCIJoQ8bBedKFf0iIzWZZMLnlqLPG49E4tJCnI4qyyP6nyHv/mN6AEWk95t root@hadoop1
[root@hadoop1 ~]# cat /root/.ssh/id_rsa
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
[root@hadoop1 ~]#
+-----------------+
[root@hadoop2 ~]# cat /root/.ssh/id_rsa
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
[root@hadoop2 ~]# cat /root/.ssh/id_rsa.pub
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDJER6Bw2TXjwXCRyqkkqVnGIzXftkXjTNy7o0vS+0JDDl72niCOSbLGChzWDya/MoZ1SIgnYrkCoNznruEQqm0/4A3rjhSw5b4t6ruzT3r7Xu1X9pw6djAOMmTAdlfWX2jzsLn25cPRrJ1/rRn2U3Ncm+x52ROFK4l83mvSqrdxPPfa9gIBqM+YTC7inuXc80AHmS85MgKh6wv4HGyzLYlgHkVYIv5kppPCI/osuexnnh+F6OPgNmmS68+PoFQVws/yMxHCKt3uPHmVht35fm/BXBNuIbQ5MTWtlub2cF15YBkJEczuS8QJqPB21NAB4yq/+832kJQZXzR0mUPyM8/ root@hadoop2
[root@hadoop2 ~]#
hadoop1免密登录hadoop2，但hadoop2不能免密登录hadoop1
[root@hadoop1 ~]# ssh-copy-id hadoop2;
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
The authenticity of host 'hadoop2 (192.168.3.102)' can't be established.
ECDSA key fingerprint is SHA256:UqQuyu+TPvuGuwdiDAkmKSrjPfjqMFBas1OyTT6aRQg.
ECDSA key fingerprint is MD5:ed:b8:30:e2:0f:e5:0c:0f:bb:7c:86:2c:9f:72:e3:d0.
Are you sure you want to continue connecting (yes/no)? yes
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@hadoop2's password: Number of key(s) added: 1 Now try logging into the machine, with: "ssh 'hadoop2'"
and check to make sure that only the key(s) you wanted were added. [root@hadoop1 ~]# ssh hadoop2
Last login: Thu Jul 12 11:11:20 2018 from 192.168.3.99
[root@hadoop2 ~]# ssh hadoop1
The authenticity of host 'hadoop1 (192.168.3.101)' can't be established.
ECDSA key fingerprint is e0:19:b2:4b:1b:d1:4e:d4:21:73:9b:44:a7:2b:d7:8c.
Are you sure you want to continue connecting (yes/no)? ^C
[root@hadoop2 ~]#
hadoop1文件变化
[root@hadoop1 ~]# ll -as /root/.ssh/
总用量 16
0 drwx------ 2 root root 57 7月 12 11:54 .
4 dr-xr-x---. 16 root root 4096 7月 12 11:48 ..
4 -rw------- 1 root root 1679 7月 12 11:48 id_rsa
4 -rw-r--r-- 1 root root 394 7月 12 11:48 id_rsa.pub
4 -rw-r--r-- 1 root root 183 7月 12 11:54 known_hosts
[root@hadoop1 ~]# cat /root/.ssh/id_rsa
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
[root@hadoop1 ~]# cat /root/.ssh/id_rsa.pub
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC/mSwq7gdDusAiW6gaA8ZAlCWOb9aCv4Bz/2L5JjpWwFPkZUQNpOtnfGRxi4X24Wrk4kq4Boj/mQ3U3sXIpeNz+ZyNVe3OPE3qKVDB2jve5pzeeM7qtWh4Ock30NzpznZFLeY9a+Ic8vDeXPPAEkgibgutibEqWyXuomSCIZGpPlh+HveY6Dtc/oRaoTEfxyLJS0FqyvzRdynCHgwiavbKFyzfL5IQVBRAqBYXLVdC6e4+gSUs1v9DAe/uEOtf5aw9AdScePSUY5AJ1fe2DTucXzci3zCIJoQ8bBedKFf0iIzWZZMLnlqLPG49E4tJCnI4qyyP6nyHv/mN6AEWk95t root@hadoop1
[root@hadoop1 ~]# cat /root/.ssh/known_hosts
hadoop2,192.168.3.102 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBKwk4ldwjl9bHfulRh/Go9dRfR70PK+XYiFAgE8JuCgBzLjfShC3JQpZNq1uDcXTPSwwWGWxfTe5lWLzKnA6jXc=
[root@hadoop1 ~]#
hadoop2文件变化
[root@hadoop2 ~]# ssh hadoop1
The authenticity of host 'hadoop1 (192.168.3.101)' can't be established.
ECDSA key fingerprint is e0:19:b2:4b:1b:d1:4e:d4:21:73:9b:44:a7:2b:d7:8c.
Are you sure you want to continue connecting (yes/no)? ^C
[root@hadoop2 ~]# ll -as /root/.ssh/
总用量 16
0 drwx------ 2 root root 61 7月 12 11:52 .
4 dr-xr-x---. 25 root root 4096 7月 12 11:47 ..
4 -rw------- 1 root root 394 7月 12 11:52 authorized_keys
4 -rw------- 1 root root 1679 7月 12 11:47 id_rsa
4 -rw-r--r-- 1 root root 394 7月 12 11:47 id_rsa.pub
[root@hadoop2 ~]# cat /root/.ssh/id_rsa
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
[root@hadoop2 ~]# cat /root/.ssh/id_rsa.pub
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDJER6Bw2TXjwXCRyqkkqVnGIzXftkXjTNy7o0vS+0JDDl72niCOSbLGChzWDya/MoZ1SIgnYrkCoNznruEQqm0/4A3rjhSw5b4t6ruzT3r7Xu1X9pw6djAOMmTAdlfWX2jzsLn25cPRrJ1/rRn2U3Ncm+x52ROFK4l83mvSqrdxPPfa9gIBqM+YTC7inuXc80AHmS85MgKh6wv4HGyzLYlgHkVYIv5kppPCI/osuexnnh+F6OPgNmmS68+PoFQVws/yMxHCKt3uPHmVht35fm/BXBNuIbQ5MTWtlub2cF15YBkJEczuS8QJqPB21NAB4yq/+832kJQZXzR0mUPyM8/ root@hadoop2
[root@hadoop2 ~]# cat /root/.ssh/authorized_keys
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC/mSwq7gdDusAiW6gaA8ZAlCWOb9aCv4Bz/2L5JjpWwFPkZUQNpOtnfGRxi4X24Wrk4kq4Boj/mQ3U3sXIpeNz+ZyNVe3OPE3qKVDB2jve5pzeeM7qtWh4Ock30NzpznZFLeY9a+Ic8vDeXPPAEkgibgutibEqWyXuomSCIZGpPlh+HveY6Dtc/oRaoTEfxyLJS0FqyvzRdynCHgwiavbKFyzfL5IQVBRAqBYXLVdC6e4+gSUs1v9DAe/uEOtf5aw9AdScePSUY5AJ1fe2DTucXzci3zCIJoQ8bBedKFf0iIzWZZMLnlqLPG49E4tJCnI4qyyP6nyHv/mN6AEWk95t root@hadoop1
[root@hadoop2 ~]#
hadoop2新生成了文件authorized_keys ，而hadoop1新生成了文件known_hosts
hadoop2的authorized_keys 中添加了hadoop1的/root/.ssh/id_rsa.pub
进行An2次 hadoopM ssh-copy-id hadoopN后
再进行 hadoopM ssh-copy-id hadoopM
共执行An2+n次
最后各个节点的
.ssh/authorized_keys
.ssh/known_hosts
[root@hadoop2 ~]# cat /root/.ssh/authorized_keys
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC/mSwq7gdDusAiW6gaA8ZAlCWOb9aCv4Bz/2L5JjpWwFPkZUQNpOtnfGRxi4X24Wrk4kq4Boj/mQ3U3sXIpeNz+ZyNVe3OPE3qKVDB2jve5pzeeM7qtWh4Ock30NzpznZFLeY9a+Ic8vDeXPPAEkgibgutibEqWyXuomSCIZGpPlh+HveY6Dtc/oRaoTEfxyLJS0FqyvzRdynCHgwiavbKFyzfL5IQVBRAqBYXLVdC6e4+gSUs1v9DAe/uEOtf5aw9AdScePSUY5AJ1fe2DTucXzci3zCIJoQ8bBedKFf0iIzWZZMLnlqLPG49E4tJCnI4qyyP6nyHv/mN6AEWk95t root@hadoop1
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC8qqdIX6zERPKf7Ed4XUpRnKCaRxZTl4NMCRtI86NFrwIYroaDlSRrI1V3J/+GIdz49YbkPMt+a+RTgJ3KUvv3ZTzT6WGkUlJneyl3iWCHxzbSaXICDMnmmX+RhoDPlWQXu4wlZfrWDjo0NZII7au5ku5YQyTK1OHZFH0+OPKSnzR7mYMfMYHK5ukve6jWIe1+rtweUyWyJcF/3jF2KcgIm6bRJWD26wuuPVfUBLMJn12AbeEgK4EWWLt3886+7w0I4hSYDa09+CZ5vRFcckYMZKV2l6DTz7Mx3oSaeCfzOa703G/wS+YI9lM7G5D12vjRu6Yd4yG59lQRgXouxpkl root@hadoop3
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDJER6Bw2TXjwXCRyqkkqVnGIzXftkXjTNy7o0vS+0JDDl72niCOSbLGChzWDya/MoZ1SIgnYrkCoNznruEQqm0/4A3rjhSw5b4t6ruzT3r7Xu1X9pw6djAOMmTAdlfWX2jzsLn25cPRrJ1/rRn2U3Ncm+x52ROFK4l83mvSqrdxPPfa9gIBqM+YTC7inuXc80AHmS85MgKh6wv4HGyzLYlgHkVYIv5kppPCI/osuexnnh+F6OPgNmmS68+PoFQVws/yMxHCKt3uPHmVht35fm/BXBNuIbQ5MTWtlub2cF15YBkJEczuS8QJqPB21NAB4yq/+832kJQZXzR0mUPyM8/ root@hadoop2
[root@hadoop2 ~]# cat /root/.ssh/known_hosts
hadoop1,192.168.3.101 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBDVVW5cw8LXqZq6aJJ9tw4idIUa1qq79AQpRrRB3zsKKtN3I9jJPYfL5IU0KRh1OO4oSvU/RV/B+KEkLayC86dI=
hadoop3,192.168.3.103 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBKAfre/2chabtppEpNdzgtyA4M62VXCR6sNfU6z4+MWe0dx+m2tSo67F7JrPNJ/NQfXO3TbQxXRawOEu9AbjhHg=
hadoop2,192.168.3.102 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBKwk4ldwjl9bHfulRh/Go9dRfR70PK+XYiFAgE8JuCgBzLjfShC3JQpZNq1uDcXTPSwwWGWxfTe5lWLzKnA6jXc=
[root@hadoop2 ~]#
内容相同
配置细节参考官网文档，注意环境变量的JAVA_HOME正确
Apache > Hadoop > Apache Hadoop Project Dist POM > Apache Hadoop 2.9.1 > Hadoop Cluster Setup
http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/ClusterSetup.html
Apache Hadoop 2.9.1 – Hadoop Cluster Setup http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/ClusterSetup.html
在etc/hadoop/hadoop-env.sh中指明该节点的JAVA_HOME
At the very least, you must specify the JAVA_HOME so that it is correctly defined on each remote node. java -verbose 找到jdk安装目录
[Loaded java.lang.Shutdown$Lock from /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.171-8.b10.el7_5.x86_64/jre/lib/rt.jar] 写入环境变量
export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.102-4.b14.el7.x86_64 etc/hadoop/core-site.xml
Parameter Value Notes
fs.defaultFS NameNode URI hdfs://host:port/
io.file.buffer.size 131072 Size of read/write buffer used in SequenceFiles. <configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://hadoop1:9001/</value>
</property>
<property>
<name>io.file.buffer.size</name>
<value>131072</value>
</property>
</configuration> etc/hadoop/hdfs-site.xml
Configurations for NameNode:
Parameter Value Notes
dfs.namenode.name.dir Path on the local filesystem where the NameNode stores the namespace and transactions logs persistently. If this is a comma-delimited list of directories then the name table is replicated in all of the directories, for redundancy.
dfs.hosts / dfs.hosts.exclude List of permitted/excluded DataNodes. If necessary, use these files to control the list of allowable datanodes.
dfs.blocksize 268435456 HDFS blocksize of 256MB for large file-systems.
dfs.namenode.handler.count 100 More NameNode server threads to handle RPCs from large number of DataNodes.
Configurations for DataNode:
Parameter Value Notes
dfs.datanode.data.dir Comma separated list of paths on the local filesystem of a DataNode where it should store its blocks. If this is a comma-delimited list of directories, then data will be stored in all named directories, typically on different devices. 创建目录
mkdir -p /home/hadoop-2.9.1/mydata/namenode;mkdir -p /home/hadoop-2.9.1/mydata/datanode; <configuration>
<property>
<name>dfs.replication</name>
<value>2</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file://home/hadoop-2.9.1/mydata/datanode</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:///home/hadoop-2.9.1/mydata/namenode</value>
</property>
<property>
<name>dfs.blocksize</name>
<value>268435456</value>
</property>
<property>
<name>dfs.namenode.handler.count</name>
<value>100</value>
</property>
</configuration> etc/hadoop/yarn-site.xml
<configuration>
<property>
<name>yarn.resourcemanager.hostname</name>
<value>hadoop1</value>
</property>
<property>
<name>yarn.nodemanager.hostname</name>
<value>hadoop1</value>
</property>
</configuration> etc/hadoop/mapred-site.xml <configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
</configuration> Slaves File
List all slave hostnames or IP addresses in your etc/hadoop/slaves file, one per line. vim etc/hadoop/slaves
hadoop1
hadoop2
hadoop3 文件夹复制
scp -r /home/hadoop-2.9.1 hadoop2:/home/;
scp -r /home/hadoop-2.9.1 hadoop1:/home/; 效率
HADOOP_PREFIX=/home/hadoop-2.9.1;export HADOOP_PREFIX;
HADOOP_PREFIX=/home/hadoop-2.9.1;export HADOOP_PREFIX;
【
ssh hadoop2 "HADOOP_PREFIX=/home/hadoop-2.9.1;export HADOOP_PREFIX;";ssh hadoop1 "HADOOP_PREFIX=/home/hadoop-2.9.1;export HADOOP_PREFIX;";
没有生效】 $HADOOP_PREFIX/bin/hdfs namenode -format my_cluster_name
用printenv检查
HADOOP_CONF_DIR=$HADOOP_PREFIX/etc/hadoop;export HADOOP_CONF_DIR;
JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.171-8.b10.el7_5.x86_64/jre; export JAVA_HOME; $HADOOP_PREFIX/sbin/hadoop-daemon.sh --config $HADOOP_CONF_DIR --script hdfs start namenode HADOOP_YARN_HOME=$HADOOP_PREFIX/;export HADOOP_YARN_HOME;
集群id不存在
2018-07-18 09:11:32,098 WARN org.apache.hadoop.hdfs.server.common.Storage: Failed to add storage directory [DISK]file:/hadoop-2.9.1/mydata/datanode/
java.io.IOException: Incompatible clusterIDs in /hadoop-2.9.1/mydata/datanode: namenode clusterID = CID-a6680204-4513-4ebc-b1eb-88be2c9cf9bc; datanode clusterID = CID-180160f6-f2cf-44c4-83eb-66e8164d99b5
at org.apache.hadoop.hdfs.server.datanode.DataStorage.doTransition(DataStorage.java:760)
at org.apache.hadoop.hdfs.server.datanode.DataStorage.loadStorageDirectory(DataStorage.java:293)
at org.apache.hadoop.hdfs.server.datanode.DataStorage.loadDataStorage(DataStorage.java:409)
at org.apache.hadoop.hdfs.server.datanode.DataStorage.addStorageLocations(DataStorage.java:388)
at org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:556)
at org.apache.hadoop.hdfs.server.datanode.DataNode.initStorage(DataNode.java:1649)
at org.apache.hadoop.hdfs.server.datanode.DataNode.initBlockPool(DataNode.java:1610)
at org.apache.hadoop.hdfs.server.datanode.BPOfferService.verifyAndSetNamespaceInfo(BPOfferService.java:388)
at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.connectToNNAndHandshake(BPServiceActor.java:280)
at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:816)
at java.lang.Thread.run(Thread.java:748)
2018-07-18 09:11:32,101 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: Initialization failed for Block pool <registering> (Datanode Uuid f4b5087b-1763-4d99-88f8-cc934716fc1a) service to hadoop1/192.168.3.101:9001. Exiting.
java.io.IOException: All specified directories have failed to load.
at org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:557)
at org.apache.hadoop.hdfs.server.datanode.DataNode.initStorage(DataNode.java:1649)
at org.apache.hadoop.hdfs.server.datanode.DataNode.initBlockPool(DataNode.java:1610)
at org.apache.hadoop.hdfs.server.datanode.BPOfferService.verifyAndSetNamespaceInfo(BPOfferService.java:388)
at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.connectToNNAndHandshake(BPServiceActor.java:280)
at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:816)
at java.lang.Thread.run(Thread.java:748)
2018-07-18 09:11:32,101 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Ending block pool service for: Block pool <registering> (Datanode Uuid f4b5087b-1763-4d99-88f8-cc934716fc1a) service to hadoop1/192.168.3.101:9001
2018-07-18 09:11:32,202 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Removed Block pool <registering> (Datanode Uuid f4b5087b-1763-4d99-88f8-cc934716fc1a) ssh hadoop1 "rm -rf /home/hadoop-2.9.1/mydata/namenode/*;rm -rf /home/hadoop-2.9.1/mydata/datanode/*;";
ssh hadoop2 "rm -rf /home/hadoop-2.9.1/mydata/namenode/*;rm -rf /home/hadoop-2.9.1/mydata/datanode/*;";
ssh hadoop3 "rm -rf /home/hadoop-2.9.1/mydata/namenode/*;rm -rf /home/hadoop-2.9.1/mydata/datanode/*;";
检查文件
.bashrc .bash_profile
[root@d1 ~]# cat ~/.bash_profile
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/bin
export PATH
JAVA_HOME=/usr/local/jdk;export JAVA_HOME;
HADOOP_PREFIX=/home/hadoop-2.9.1;export HADOOP_PREFIX;HADOOP_CONF_DIR=$HADOOP_PREFIX/etc/hadoop;export HADOOP_CONF_DIR;HADOOP_HOME=/home/hadoop-2.9.1;export HADOOP_HOME;HADOOP_PREFIX=/home/hadoop-2.9.1;export HADOOP_PREFIX;HADOOP_CONF_DIR=$HADOOP_PREFIX/etc/hadoop;export HADOOP_CONF_DIR;HADOOP_HOME=/home/hadoop-2.9.1;export HADOOP_HOME;HADOOP_YARN_HOME=$HADOOP_PREFIX;export HADOOP_YARN_HOME;
[root@d1 ~]#
source ~/.bash_profile;
scp ~/.bashrc_profile root@d2:~/;
ssh d2 "source ~/.bash_profile";
[root@d1 ~]# cd $HADOOP_HOME
[root@d1 hadoop-2.9.1]# cat myCleanStart.sh
#【stop】
$HADOOP_PREFIX/sbin/hadoop-daemon.sh --config $HADOOP_CONF_DIR --script hdfs stop namenode; $HADOOP_PREFIX/sbin/hadoop-daemons.sh --config $HADOOP_CONF_DIR --script hdfs stop datanode;$HADOOP_PREFIX/sbin/stop-dfs.sh;$HADOOP_YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR stop resourcemanager;$HADOOP_YARN_HOME/sbin/yarn-daemons.sh --config $HADOOP_CONF_DIR stop nodemanager;$HADOOP_PREFIX/sbin/stop-yarn.sh;ssh d3 "rm -rf /home/hadoop-2.9.1/mydata/namenode/*;rm -rf /home/hadoop-2.9.1/mydata/datanode/*;";ssh d2 "rm -rf /home/hadoop-2.9.1/mydata/namenode/*;rm -rf /home/hadoop-2.9.1/mydata/datanode/*;";ssh d1 "rm -rf /home/hadoop-2.9.1/mydata/namenode/*;rm -rf /home/hadoop-2.9.1/mydata/datanode/*;";ssh d3 "rm -rf /home/hadoop-2.9.1/logs/*;rm -rf /home/hadoop-2.9.1/logs/*;";ssh d2 "rm -rf /home/hadoop-2.9.1/logs/*;rm -rf /home/hadoop-2.9.1/logs/*;";ssh d1 "rm -rf /home/hadoop-2.9.1/logs/*;rm -rf /home/hadoop-2.9.1/logs/*;"; #【del】
ssh d3 "rm -rf /home/hadoop-2.9.1/mydata/namenode/*;rm -rf /home/hadoop-2.9.1/mydata/datanode/*;";ssh d2 "rm -rf /home/hadoop-2.9.1/mydata/namenode/*;rm -rf /home/hadoop-2.9.1/mydata/datanode/*;";ssh d1 "rm -rf /home/hadoop-2.9.1/mydata/namenode/*;rm -rf /home/hadoop-2.9.1/mydata/datanode/*;";ssh d3 "rm -rf /home/hadoop-2.9.1/logs/*;rm -rf /home/hadoop-2.9.1/logs/*;";ssh d2 "rm -rf /home/hadoop-2.9.1/logs/*;rm -rf /home/hadoop-2.9.1/logs/*;";ssh d1 "rm -rf /home/hadoop-2.9.1/logs/*;rm -rf /home/hadoop-2.9.1/logs/*;"; #【start】
$HADOOP_PREFIX/bin/hdfs namenode -format mycluster_name;$HADOOP_PREFIX/sbin/hadoop-daemon.sh --config $HADOOP_CONF_DIR --script hdfs start namenode;$HADOOP_PREFIX/sbin/hadoop-daemons.sh --config $HADOOP_CONF_DIR --script hdfs start datanode;$HADOOP_PREFIX/sbin/start-dfs.sh;$HADOOP_YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR start resourcemanager;$HADOOP_YARN_HOME/sbin/yarn-daemons.sh --config $HADOOP_CONF_DIR start nodemanager; [root@d1 hadoop-2.9.1]#
1.1.1.182 cmd
1.1.1.88 hadoop-name
1.1.1.89 hadoop-data-a
1.1.1.90 hadoop-data-b 1.1.1.182
+*uu 1.1.1.88
1.1.1.89
1.1.1.90
dd scp /etc/hosts root@hadoop-name:/etc/;scp /etc/hosts root@hadoop-data-a:/etc/;scp /etc/hosts root@hadoop-data-b:/etc/; # cd ~;ssh-keygen -t rsa; ssh cmd "rm -rf ~/.ssh;ls ~/"; ssh hadoop-name "rm -rf ~/.ssh;ls ~/";ssh hadoop-data-a "rm -rf ~/.ssh;ls ~/";ssh hadoop-data-b "rm -rf ~/.ssh;ls ~/"; # TODO -->script
ssh hadoop-name;
hostname hadoop-name;cd ~;ssh-keygen -t rsa; scp ~/.ssh/id_rsa.pub root@cmd:~/.ssh/authorized_keys_`hostname`;
ssh hadoop-data-a;
hostname hadoop-data-a;cd ~;ssh-keygen -t rsa; scp ~/.ssh/id_rsa.pub root@cmd:~/.ssh/authorized_keys_`hostname`; ssh hadoop-data-b;
hostname hadoop-data-b;cd ~;ssh-keygen -t rsa; scp ~/.ssh/id_rsa.pub root@cmd:~/.ssh/authorized_keys_`hostname`; ssh cmd;
cd ~/.ssh/;cat authorized_keys_*>>authorized_keys; cat id_rsa.pub>>authorized_keys; chmod 400 authorized_keys;
scp authorized_keys root@hadoop-name:~/.ssh/;scp authorized_keys root@hadoop-data-a:~/.ssh/;scp authorized_keys root@hadoop-data-b:~/.ssh/;
scp known_hosts root@hadoop-name:~/.ssh/;scp known_hosts root@hadoop-data-a:~/.ssh/;scp known_hosts root@hadoop-data-b:~/.ssh/;
tail hadoop-hdp-datanode-hadoop-name.log
at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2799)
at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2714)
at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2756)
at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2900)
at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2924)
2019-11-07 13:14:44,477 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1: org.apache.hadoop.util.DiskChecker$DiskErrorException: Too many failed volumes - current valid volumes: 0, volumes configured: 1, volumes failed: 1, volume failures tolerated: 0
2019-11-07 13:14:44,482 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:
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