Centos7使用CDH6.3.0安装大数据集群

修改网络和主机名

cdh6-master

[root@cdh6-master ~]# hostnamectl set-hostname cdh6-master[root@cdh6-master ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33TYPE=EthernetPROXY_METHOD=noneBROWSER_ONLY=noBOOTPROTO=staticDEFROUTE=yesIPV4_FAILURE_FATAL=noIPV6INIT=yesIPV6_AUTOCONF=yesIPV6_DEFROUTE=yesIPV6_FAILURE_FATAL=noIPV6_ADDR_GEN_MODE=stable-privacyNAME=ens33UUID=bdf6fb11-50f4-403a-8ba6-b9dca61a591eDEVICE=ens33ONBOOT=yesIPADDR=192.168.200.125NETMASK=255.255.255.0GATEWAY=192.168.200.2DNS1=8.8.8.8

cdh6-slave1

[root@cdh6-slave1 ~]# hostnamectl set-hostname cdh6-slave1[root@cdh6-slave1 ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33TYPE=EthernetPROXY_METHOD=noneBROWSER_ONLY=noBOOTPROTO=staticDEFROUTE=yesIPV4_FAILURE_FATAL=noIPV6INIT=yesIPV6_AUTOCONF=yesIPV6_DEFROUTE=yesIPV6_FAILURE_FATAL=noIPV6_ADDR_GEN_MODE=stable-privacyNAME=ens33UUID=e2b4e53e-5a4d-4b20-b6ff-39a67539214aDEVICE=ens33ONBOOT=yesIPADDR=192.168.200.126NETMASK=255.255.255.0GATEWAY=192.168.200.2DNS1=8.8.8.8

cdh6-slave2

[root@cdh6-slave2 ~]# hostnamectl set-hostname cdh6-slave2[root@cdh6-slave2 ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33TYPE=EthernetPROXY_METHOD=noneBROWSER_ONLY=noBOOTPROTO=staticDEFROUTE=yesIPV4_FAILURE_FATAL=noIPV6INIT=yesIPV6_AUTOCONF=yesIPV6_DEFROUTE=yesIPV6_FAILURE_FATAL=noIPV6_ADDR_GEN_MODE=stable-privacyNAME=ens33UUID=a15136a1-c83b-4750-9ff3-2ca779e39818DEVICE=ens33ONBOOT=yesIPADDR=192.168.200.127NETMASK=255.255.255.0GATEWAY=192.168.200.2DNS1=8.8.8.8

关闭防火墙和SELinux

vi /etc/hosts：

192.168.200.125        cdh6-master192.168.200.126        cdh6-slave1192.168.200.127        cdh6-slave2

# 关闭防火墙systemctl stop firewalld# 禁止防火墙开机自启systemctl disable firewalld# 临时生效setenforce 0# 永久生效修改 /etc/selinux/config 下的 SELINUX=disabled

SSH免密登陆

在cdh6-master节点(只需要主节点能免密登陆其它节点以及自己就可以了)：

# 输入之后一直回车ssh-keygen    # 赋值秘钥到其它节点包括自己ssh-copy-id   cdh6-masterssh-copy-id   cdh6-slave1ssh-copy-id   cdh6-slave2

注意事项：如果出现 ssh-copy-id: command not found 需要执行该命令（yum -y install openssh-clients）

集群时间同步

#全部节点安装ntprpm -qa |grep ntpd###没有安装ntp,则需要安装此服务yum install -y ntp

cdh6-master

vi /etc/ntp.conf###去掉这个注释，将地址改成网段地址restrict 192.168.200.2 mask 255.255.255.0 nomodify notrap###注释掉这几个#server 0.centos.pool.ntp.org iburst#server 1.centos.pool.ntp.org iburst#server 2.centos.pool.ntp.org iburst#server 3.centos.pool.ntp.org iburst###添加一下内容server 127.127.1.0fudge  127.127.1.0  stratum  10vi /etc/sysconfig/ntpd###加入下面一句话，用于配置boot时间和系统时间同步SYNC_HWCLOCK=yes###可选，选择上海时区ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

cdh6-slave1和cdh6-slave2

输入 crontab -e 命令进入编辑状态，然后输入一下内容（该任务保存在目录/var/spool/cron　下，必须用root用户才能看到  ）* * * * * /usr/sbin/ntpdate        cdh6-master

启动所有节点的ntp

service ntpd startchkconfig ntpd on

安装repo、GPG key、jdk

所有节点。

# 安装repo，如果没有wget就yum install -y wgetwget https://archive.cloudera.com/cm6/6.3.0/redhat7/yum/cloudera-manager.repo -P /etc/yum.repos.d/# 导入GPG keyrpm --import https://archive.cloudera.com/cm6/6.3.0/redhat7/yum/RPM-GPG-KEY-cloudera

# 安装jdkyum install -y oracle-j2sdk1.8# 配置java环境变量vi /etc/profile# 最后面加上export JAVA_HOME=/usr/java/jdk1.8.0_141-clouderaexport PATH=$PATH:$JAVA_HOME/bin# 生效环境变量source /etc/profile

上传cdh资源包到cdh6-master节点

在cdh6-slave1安装MySQL

cdh-slave1节点。

wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpmrpm -ivh mysql-community-release-el7-5.noarch.rpmyum updateyum install -y mysql-serversystemctl start mysqldsystemctl enable mysqld###初始化Mysql/usr/bin/mysql_secure_installation[...]Enter current password for root (enter for none):OK, successfully used password, moving on...[...]Set root password? [Y/n] YNew password:Re-enter new password:Remove anonymous users? [Y/n] Y[...]Disallow root login remotely? [Y/n] N[...]Remove test database and access to it [Y/n] Y[...]Reload privilege tables now? [Y/n] YAll done!

安装MySQL JDBC Driver

所有节点。

wget https://dev.mysql.com/get/Downloads/Connector-J/mysql-connector-java-5.1.46.tar.gztar -zxvf mysql-connector-java-5.1.46.tar.gzmkdir -p /usr/share/java/cd mysql-connector-java-5.1.46cp mysql-connector-java-5.1.46-bin.jar /usr/share/java/mysql-connector-java.jar

一定要将mysql-connector-java-5.1.46-bin.jar改名为mysql-connector-java.jar，不然初始化cm的时候无法识别。

创建数据库

在安装MySQL数据库的cdh6-slave1节点。

需要建的库有scm、amon、rman、hue、metastore、sentry、nav、navms、oozie

CREATE DATABASE scm DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;CREATE DATABASE amon DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;CREATE DATABASE rman DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;CREATE DATABASE hue DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;CREATE DATABASE metastore DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;CREATE DATABASE sentry DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;CREATE DATABASE nav DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;CREATE DATABASE navms DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;CREATE DATABASE oozie DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;CREATE DATABASE hive DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;

开放远程权限：

mysql> use mysql;mysql> grant all privileges on *.* to 'root'@'%' identified by '123456' with grant option;mysql> grant all privileges on *.* to 'scm'@'master.cdh6' identified by '123456' with grant option;mysql> flush privileges;

离线安装cdh

下载安装包

# 创建文件夹mkdir -p /opt/cloudera/parcel-repo/

# 将CHD6相关的Parcel包放到主节点的/opt/cloudera/parcel-repo/目录中，如果没有此目录，可以自己创建。CDH-6.3.0-1.cdh6.3.0.p0.537114-el7.parcelCDH-6.3.0-1.cdh6.3.0.p0.537114-el7.parcel.sha256manifest.json

cloudera-manager的rpm安装包就直接rpm -ivh安装即可，先解压cloudera-manager-daemons-6.3.0-1281944.el7.x86_64.rpm。

CDH-6.3.0-1.cdh6.3.0.p0.1279813-el7.parcel.sha256重命名为CDH-6.3.0-1.cdh6.3.0.p0.1279813-el7.parcel.sha，这点必须注意否则，系统会重新下载。

https://archive.cloudera.com/cdh6/6.3.0/parcels/manifest.json中有所有版本的秘钥，

然后，CDH-6.3.0-1.cdh6.3.0.p0.1279813-el7.parcel.sha中的秘钥修改为对应版本的秘钥。

我选的这个版本的秘钥：https://archive.cloudera.com/cdh6/6.3.0/parcels/CDH-6.3.0-1.cdh6.3.0.p0.1279813-el7.parcel.sha1。

解压CM安装包

环境依赖安装：

yum install -y perlyum install -y bind-utils psmisc libxslt cyrus-sasl-plain cyrus-sasl-gssapi fuse portmap fuse-libs httpd mod_ssl openssl-devel python-psycopg2 MySQL-python /lib/lsb/init-functions libpq.so.5

所有节点：

rpm -ivh cloudera-manager-daemons-6.3.0-1281944.el7.x86_64.rpmrpm -ivh cloudera-manager-agent-6.3.0-1281944.el7.x86_64.rpm

仅仅在master节点：

rpm -ivh cloudera-manager-server-6.3.0-1281944.el7.x86_64.rpm

修改所有节点的CM主机指向

vi /etc/cloudera-scm-agent/config.ini# 将server_host修改为CM-Server所在的主机名server_host=cdh6-master

初始化数据库

我这里MySQL安装在cdh6-slave1节点，cm-server安装在cdh6-master节点。

/opt/cloudera/cm/schema/scm_prepare_database.sh mysql -h cdh6-slave1 --scm-host cdh6-master scm scm

注意事项，如果MySQL和cm-server在一台服务器上：

/opt/cloudera/cm/schema/scm_prepare_database.sh mysql scm scm

启动cdh6-master节点的cloudera-scm-server：

systemctl start cloudera-scm-server

等待server启动完毕之后，再启动所有节点的cloudera-scm-agent：

systemctl start cloudera-scm-agent

安装大数据组件

可能会遇到的问题

虚拟内存设置

Cloudera 建议将 /proc/sys/vm/swappiness 设置为 0。当前设置为 60。使用 sysctl 命令在运行时更改该设置并编辑 /etc/sysctl.conf 以在重启后保存该设置。您可以继续进行安装，但可能会遇到问题，Cloudera Manager 报告您的主机由于交换运行状况不佳。以下主机受到影响：

通过echo 0 > /proc/sys/vm/swappiness即可解决。

sysctl -w vm.swappiness=0echo vm.swappiness = 0 >> /etc/sysctl.conf

大内存设置

大内存页禁用

echo never>/sys/kernel/mm/transparent_hugepage/defragecho never>/sys/kernel/mm/transparent_hugepage/enabled

升级软件依赖版本

Starting with CDH 6, PostgreSQL-backed Hue requires the Psycopg2 version to be at least 2.5.4, see the documentation for more information. This warning can be ignored if hosts will not run CDH 6, or will not run Hue with PostgreSQL. The following hosts have an incompatible Psycopg2 version of '2.5.1'

解决方法：可以忽略。

yum install python-pippip install --upgrade psycopg2

安装Parcel提示主机运行状况不良

删除agent目录下面的cm_guid文件，并重启失败节点的agent服务恢复。

find / -name cm_guid/var/lib/cloudera-scm-agent/cm_guid删除它/var/lib/cloudera-scm-agent/cm_guid###重启agentsystemctl cloudera-scm-agent restart