CentOS7檢視和關閉防火牆
阿新 • • 發佈：2018-12-15
CentOS 7.0預設使用的是firewall作為防火牆
檢視防火牆狀態
firewall-cmd --state停止firewall
systemctl stop firewalld.service禁止firewall開機啟動
systemctl disable firewalld.service 關閉selinux 進入到/etc/selinux/config檔案
vi /etc/selinux/config將SELINUX=enforcing改為SELINUX=disabled
配製免密登入的命令
ssh-keygen -t rsa
ssh-copy-id [email protected] scp -P 22 /Users/che/Downloads/jdk-8u161-linux-x64.rpm [email protected]:/software/
安裝: yum install -y jdk-8u161-linux-x64.rpm
設定環境變數
cd /usr/java/
/usr/java/jdk1.8.0_161
vi /etc/profile
export JAVA_HOME=/usr/java/jdk1.8.0_161
export PATH=$JAVA_HOME/bin:$PATH
安裝hadoop 下載安裝包 hadoop-26.5.tar.gz
cd /usr/ mv /software/hadoop-2.6.5.tar.gz ./ 解壓 tar -xzvf ./hadoop-2.6.5.tar.gz 建立目錄 namenode目錄：/data/hadoop/namenode data目錄： /data/hadoop/data tmp目錄： /data/hadoop/tmp mkdir -p /data/hadoop/namenode 配製 core-site.xml hdfs-site.xml mapred-site.xml.template mapred-site.xml cp mapred-site.xml.template mapred-site.xml yarn-site.xml slaves (slave1,slave2) masters (master) hadoop-env.sh export JAVA_HOME=/usr/java/jdk1.8.0_161 將master的配製copy到slave1、slave2 scp -r ./*[email protected]:/software/hadoop-2.6.5/etc/hadoop/ 格式化 cd hadoop-2.6.5/bin ./hdfs namenode -format 啟動 cd ../sbin/ ./start-dfs.sh ssh-copy-id [email protected] jps(檢查一下) ./start-yarn.sh cd ../bin hadoop fs -ls / hadoop fs -mkdir /user /software/hadoop-2.6.5/bin vi/etc/profile export HADOOP_HOME=/software/hadoop-2.6.5 export PATH=$JAVA_HOME/bin:$HADOOP_HOME/bin:$PATH source /etc/profile hadoop fs -put /software/hadoop-2.6.5.tar.gz /user 測試2： cd share/hadoop/mapreduce hadoop jar ./hadoop-mapreduce-examples-2.6.5.jar pi 5 10 192.168.1.100:50070 192.168.1.100:8088 修改ssh埠 vim /etc/ssh/sshd_config
設定ntp時間同步服務 1、安裝ntp yum install -y ntp 2、設定NTP服務開機啟動 chkconfig ntpd on service nptd start