CDH5.16.1集群企业真正离线部署

⼀.准备⼯作

1.离线部署大纲

• MySQL离线部署
• CM离线部署
• Parcel⽂件离线源部署

2.规划

linux版本:CentOS 7.2

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3.下载源

• CM
  cloudera-manager-centos7-cm5.16.1x8664.tar.gz

• Parcel
  CDH-5.16.1-1.cdh6.16.1.p0.3-el7.parcel
  CDH-5.16.1-1.cdh6.16.1.p0.3-el7.parcel.sha1
  manifest.json

• JDK
  JDK8
  下载jdk-8u202-linux-x64.tar.gz

• MySQL
  MYSQL5.7
  下载mysql-5.7.26-el7-x86_64.tar.gz

• MySQL JDBC jar
  mysql-connector-java-5.1.47.jar
  下载完成后要重命名去掉版本号

  mv mysql-connector-java-5.1.47.jar mysql-connector-java.jar  

⼆.集群节点初始化

1.阿里云购买3台虚拟机

(最低配置 2core 8G)，选择按量付费

CentOS7.2

2.当前笔记本(win)hosts配置文件

路径: C:\Windows\System32\drivers\etc\hosts

39.97.188.249   hadoop001   hadoop001
39.97.225.112   hadoop002   hadoop002
39.97.224.68    hadoop003   hadoop003

注意：IP是你虚拟机公网IP

3.设置所有节点的hosts文件

echo '172.17.144.104 hadoop001' >> /etc/hosts
echo '172.17.144.103 hadoop002' >> /etc/hosts
echo '172.17.144.105 hadoop003' >> /etc/hosts
#检查
cat /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

172.17.144.104 hadoop001
172.17.144.103 hadoop002
172.17.144.105 hadoop003

注意:IP为内网IP

4.关闭所有节点防火墙及清空规则

云主机

我们使用的云主机，无论阿里云还是腾讯云的防火墙都是关闭的，所以我们不需要关闭服务器的防火墙。但是，我们需要检查下是否自动开启了web访问端口，如果没有，则自己添加

(1)打开安全组配置

进入之后点击配置规则

(2)添加安全组规则

注意:

1.点击蓝色感叹号会有规则说明

2.授权对象如果在公司内需要设置网段，就按照上图，将ip网段规定好。不限制的话就直接0.0.0.0/0

内网服务器

最好在内部服务器部署时就将防火墙关闭，如果不行就暂时关闭，等部署成功再开启

systemctl stop firewalld

systemctl disable firewalld

iptables -F   

5.关闭所有节点selinux

阿里云服务器已经将selinux关闭了，所以不用配置

自己的服务器很可能会开启selinux，这样就需要关闭了

将SELINUX=disabled设置进去，之后重启才会生效

vim /etc/selinux/config 
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of three two values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected. 
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted

6.设置所有节点时区一致及时钟同步

阿里云已经将节点时区和时间做了同步

我们实操下公司环境的时区时间同步

6.1时区

[root@hadoop001 ~]# timedatectl
      Local time: Tue 2019-05-28 15:37:53 CST
  Universal time: Tue 2019-05-28 07:37:53 UTC
        RTC time: Tue 2019-05-28 15:37:53
       Time zone: Asia/Shanghai (CST, +0800)
     NTP enabled: yes
NTP synchronized: yes
 RTC in local TZ: yes
      DST active: n/a
#查看命令帮助，学习⾄关重要，⽆需百度，太low
[root@hadoop001 ~]# timedatectl --help
timedatectl [OPTIONS...] COMMAND ...
Query or change system time and date settings.
-h --help Show this help message
--version Show package version
--no-pager Do not pipe output into a pager
--no-ask-password Do not prompt for password
-H --host=[USER@]HOST Operate on remote host
-M --machine=CONTAINER Operate on local container
--adjust-system-clock Adjust system clock when changing local RTC mode
Commands:
status Show current time settings
set-time TIME Set system time
set-timezone ZONE Set system time zone
list-timezones Show known time zones
set-local-rtc BOOL Control whether RTC is in local time
set-ntp BOOL Control whether NTP is enabled
#查看哪些时区
[root@hadoop001 ~]# timedatectl list-timezones
Africa/Abidjan
Africa/Accra
Africa/Addis_Ababa
Africa/Algiers
Africa/Asmara
Africa/Bamako
#所有节点设置亚洲上海时区
[root@hadoop001 ~]# timedatectl set-timezone Asia/Shanghai
[root@hadoop002 ~]# timedatectl set-timezone Asia/Shanghai
[root@hadoop003 ~]# timedatectl set-timezone Asia/Shanghai

6.2.时间

#所有节点安装ntp
[root@hadoop001 ~]# yum install -y ntp
#选取hadoop001为ntp的主节点
[root@hadoop001 ~]# vi /etc/ntp.conf
#time
server 0.asia.pool.ntp.org
server 1.asia.pool.ntp.org
server 2.asia.pool.ntp.org
server 3.asia.pool.ntp.org
#当外部时间不可用时，可使用本地硬件时间
server 127.127.1.0 iburst local clock
#允许哪些网段的机器来同步时间   修改成自己的内网网段
restrict 172.17.144.0 mask 255.255.255.0 nomodify notrap
#开启ntpd及查看状态
[root@hadoop001 ~]# systemctl start ntpd
[root@hadoop001 ~]# systemctl status ntpd
● ntpd.service - Network Time Service
Loaded: loaded (/usr/lib/systemd/system/ntpd.service; enabled; vendor preset: d
isabled)
Active: active (running) since Sat 2019-05-11 10:15:00 CST; 11min ago
Main PID: 18518 (ntpd)
CGroup: /system.slice/ntpd.service
!"18518 /usr/sbin/ntpd -u ntp:ntp -g
May 11 10:15:00 hadoop001 systemd[1]: Starting Network Time Service...
May 11 10:15:00 hadoop001 ntpd[18518]: proto: precision = 0.088 usec
May 11 10:15:00 hadoop001 ntpd[18518]: 0.0.0.0 c01d 0d kern kernel time sync enabl
ed
May 11 10:15:00 hadoop001 systemd[1]: Started Network Time Service.
#验证
[root@hadoop001 ~]# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
LOCAL(0) .LOCL. 10 l 726 64 0 0.000 0.000 0.000
#其他从节点停⽌禁⽤ntpd服务
[root@hadoop002 ~]# systemctl stop ntpd
[root@hadoop002 ~]# systemctl disable ntpd
Removed symlink /etc/systemd/system/multi-user.target.wants/ntpd.service.
[root@hadoop002 ~]# /usr/sbin/ntpdate hadoop001
11 May 10:29:22 ntpdate[9370]: adjust time server 172.19.7.96 offset 0.000867 sec
#每天凌晨同步hadoop001节点时间[root@hadoop002 ~]# crontab -e
00 00 * * * /usr/sbin/ntpdate hadoop001
[root@hadoop003 ~]# systemctl stop ntpd
[root@hadoop004 ~]# systemctl disable ntpd
Removed symlink /etc/systemd/system/multi-user.target.wants/ntpd.service.
[root@hadoop005 ~]# /usr/sbin/ntpdate hadoop001
11 May 10:29:22 ntpdate[9370]: adjust time server 172.19.7.96 offset 0.000867 sec
#每天凌晨同步hadoop001节点时间
[root@hadoop003 ~]# crontab -e
00 00 * * * /usr/sbin/ntpdate hadoop001

7.JDK部署

mkdir /usr/java
tar -xzvf jdk-8u45-linux-x64.tar.gz -C /usr/java/
#切记必须修正所属⽤户及⽤户组
chown -R root:root /usr/java/jdk1.8.0_45
[root@hadoop001 cdh6.16.1]# vim /etc/profile
export JAVA_HOME=/usr/java/jdk1.8.0_45
export PATH=${JAVA_HOME}/bin:${PATH}
source /etc/profile
which java

如果节点过多，那么就只做一台镜像模板，将基础工作完成之后，分发克隆。。（最好请运维小哥哥做~）

8.hadoop001节点离线部署MySQL5.7

（按照生产标准）

8.1 解压及创建文件夹

#解压
[root@hadoop001 cdh6.16.1]# tar xzvf mysql-5.7.11-linux-glibc2.5-x86_64.tar.gz -C /usr/local/
#切换目录
[root@hadoop001 cdh6.16.1]# cd /usr/local/
#修改mysql名称
[root@hadoop001 local]# mv mysql-5.7.11-linux-glibc2.5-x86_64/ mysql
#创建文件夹
[root@hadoop001 local]# mkdir mysql/arch mysql/data mysql/tmp

8.2 创建my.cnf

rm /etc/my.cnf

vim /etc/my.cnf

[client]
port            = 3306
socket          = /usr/local/mysql/data/mysql.sock
default-character-set=utf8mb4

[mysqld]
port            = 3306
socket          = /usr/local/mysql/data/mysql.sock

skip-slave-start

skip-external-locking
key_buffer_size = 256M
sort_buffer_size = 2M
read_buffer_size = 2M
read_rnd_buffer_size = 4M
query_cache_size= 32M
max_allowed_packet = 16M
myisam_sort_buffer_size=128M
tmp_table_size=32M

table_open_cache = 512
thread_cache_size = 8
wait_timeout = 86400
interactive_timeout = 86400
max_connections = 600

# Try number of CPU's*2 for thread_concurrency
#thread_concurrency = 32 

#isolation level and default engine 
default-storage-engine = INNODB
transaction-isolation = READ-COMMITTED

server-id  = 1739
basedir     = /usr/local/mysql
datadir     = /usr/local/mysql/data
pid-file     = /usr/local/mysql/data/hostname.pid

#open performance schema
log-warnings
sysdate-is-now

binlog_format = ROW
log_bin_trust_function_creators=1
log-error  = /usr/local/mysql/data/hostname.err
log-bin = /usr/local/mysql/arch/mysql-bin
expire_logs_days = 7

innodb_write_io_threads=16

relay-log  = /usr/local/mysql/relay_log/relay-log
relay-log-index = /usr/local/mysql/relay_log/relay-log.index
relay_log_info_file= /usr/local/mysql/relay_log/relay-log.info

log_slave_updates=1
gtid_mode=OFF
enforce_gtid_consistency=OFF

# slave
slave-parallel-type=LOGICAL_CLOCK
slave-parallel-workers=4
master_info_repository=TABLE
relay_log_info_repository=TABLE
relay_log_recovery=ON

#other logs
#general_log =1
#general_log_file  = /usr/local/mysql/data/general_log.err
#slow_query_log=1
#slow_query_log_file=/usr/local/mysql/data/slow_log.err

#for replication slave
sync_binlog = 500

#for innodb options 
innodb_data_home_dir = /usr/local/mysql/data/
innodb_data_file_path = ibdata1:1G;ibdata2:1G:autoextend

innodb_log_group_home_dir = /usr/local/mysql/arch
innodb_log_files_in_group = 4
innodb_log_file_size = 1G
innodb_log_buffer_size = 200M

#根据生产需要，调整pool size 
innodb_buffer_pool_size = 2G
#innodb_additional_mem_pool_size = 50M #deprecated in 5.6
tmpdir = /usr/local/mysql/tmp

innodb_lock_wait_timeout = 1000
#innodb_thread_concurrency = 0
innodb_flush_log_at_trx_commit = 2

innodb_locks_unsafe_for_binlog=1

#innodb io features: add for mysql5.5.8
performance_schema
innodb_read_io_threads=4
innodb-write-io-threads=4
innodb-io-capacity=200
#purge threads change default(0) to 1 for purge
innodb_purge_threads=1
innodb_use_native_aio=on

#case-sensitive file names and separate tablespace
innodb_file_per_table = 1
lower_case_table_names=1

[mysqldump]
quick
max_allowed_packet = 128M

[mysql]
no-auto-rehash
default-character-set=utf8mb4

[mysqlhotcopy]
interactive-timeout

[myisamchk]
key_buffer_size = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M

8.3 创建用户组及用户

[root@hadoop001 local]# groupadd -g 101 dba
[root@hadoop001 local]# useradd -u 514 -g dba -G root -d /usr/local/mysql mysqladmin

[root@hadoop001 local]# id mysqladmin
uid=514(mysqladmin) gid=101(dba) groups=101(dba),0(root)

## 一般不需要设置mysqladmin的密码，直接从root或者LDAP用户sudo切换

8.4 copy 环境变量配置文件

copy 环境变量配置文件(隐藏文件)至mysqladmin用户的home目录中,为了以下步骤配置个人环境变量

cp /etc/skel/.* /usr/local/mysql  

8.5 配置环境变量

[root@hadoop001 local]# vi mysql/.bash_profile

# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi
# User specific environment and startup programs
export MYSQL_BASE=/usr/local/mysql
export PATH=${MYSQL_BASE}/bin:$PATH

unset USERNAME

#stty erase ^H
set umask to 022
umask 022
PS1=`uname -n`":"'$USER'":"'$PWD'":>"; export PS1

8.6 赋权限和用户组 切换用户mysqladmin 安装

[root@hadoop001 local]# chown  mysqladmin:dba /etc/my.cnf 
[root@hadoop001 local]# chmod  640 /etc/my.cnf  
[root@hadoop001 local]# chown -R mysqladmin:dba /usr/local/mysql
[root@hadoop001 local]# chmod -R 755 /usr/local/mysql 

8.7 配置服务及开机自启动

[root@hadoop001 local]#  cd /usr/local/mysql
#将服务文件拷贝到init.d下，并重命名为mysql
[root@hadoop001 mysql]# cp support-files/mysql.server /etc/rc.d/init.d/mysql 
#赋予可执行权限
[root@hadoop001 mysql]# chmod +x /etc/rc.d/init.d/mysql
#删除服务
[root@hadoop001 mysql]# chkconfig --del mysql
#添加服务
[root@hadoop001 mysql]# chkconfig --add mysql
[root@hadoop001 mysql]# chkconfig --level 345 mysql on

8.8 安装libaio及安装mysql的初始db

[root@hadoop001 mysql]# yum -y install libaio

[root@hadoop001 mysql]# su - mysqladmin
Last login: Tue May 28 17:04:49 CST 2019 on pts/0
hadoop001:mysqladmin:/usr/local/mysql:>bin/mysqld \
> --defaults-file=/etc/my.cnf \
> --user=mysqladmin \
> --basedir=/usr/local/mysql/ \
> --datadir=/usr/local/mysql/data/ \
> --initialize

在初始化时如果加上 –initial-insecure，则会创建空密码的 root@localhost 账号，否则会创建带密码的 root@localhost 账号，密码直接写在 log-error 日志文件中（在5.6版本中是放在 ~/.mysql_secret 文件里，更加隐蔽，不熟悉的话可能会无所适从）

8.9 查看临时密码

#查看密码
hadoop001:mysqladmin:/usr/local/mysql/data:>cat hostname.err |grep password
2019-05-28T09:28:40.447701Z 1 [Note] A temporary password is generated for root@localhost: J=

hadoop001:mysqladmin:/usr/local/mysql:>/usr/local/mysql/bin/mysqld_safe --defaults-file=/etc/my.cnf &
[1] 21740
hadoop001:mysqladmin:/usr/local/mysql:>2019-05-28T09:38:16.127060Z mysqld_safe Logging to '/usr/local/mysql/data/hostname.err'.
2019-05-28T09:38:16.196799Z mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
#按两次回车

##退出mysqladmin用户
##查看mysql进程号
[root@hadoop001 mysql]#ps -ef|grep mysql
mysqlad+ 21740     1  0 17:38 pts/0    00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --defaults-file=/etc/my.cnf
mysqlad+ 22557 21740  0 17:38 pts/0    00:00:00 /usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --log-error=/usr/local/mysql/data/hostname.err --pid-file=/usr/local/mysql/data/hostname.pid --socket=/usr/local/mysql/data/mysql.sock --port=3306
root     22609  9194  0 17:39 pts/0    00:00:00 grep --color=auto mysql
##通过mysql进程号查看mysql端口号
[root@hadoop001 mysql]# netstat -nlp|grep 22557
#切换成mysqladmin
[root@hadoop001 mysql]# su - mysqladmin
Last login: Tue May 28 17:24:45 CST 2019 on pts/0
hadoop001:mysqladmin:/usr/local/mysql:>
##查看mysql是否运行
hadoop001:mysqladmin:/usr/local/mysql:>service mysql status
MySQL running (22557)[  OK  ]

#初始密码
hadoop001:mysqladmin:/usr/local/mysql:>mysql -uroot -p'J= alter user root@localhost identified by 'ruozedata123';
mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'ruozedata123' ;
#刷权限
mysql> flush privileges;

mysql> CREATE DATABASE `cmf`  DEFAULT CHARACTER SET utf8;

mysql> GRANT ALL PRIVILEGES ON cmf.* TO 'cmf'@'%' IDENTIFIED BY 'ruozedata123' ;

mysql> create database amon default character set utf8;

mysql> GRANT ALL PRIVILEGES ON amon.* TO 'amon'@'%' IDENTIFIED BY 'ruozedata123' ;

--刷权限
mysql> flush privileges;

[root@hadoop001 cdh6.16.1]# mkdir -p /usr/share/java
[root@hadoop001 cdh6.16.1]# ls -lh
total 3.5G
-rw-r--r-- 1 root root 2.0G May 15 10:01 CDH-5.16.1-1.cdh6.16.1.p0.3-el7.parcel
-rw-r--r-- 1 root root   41 May 14 20:17 CDH-5.16.1-1.cdh6.16.1.p0.3-el7.parcel.sha1
-rw-r--r-- 1 root root 803M May 15 09:38 cloudera-manager-centos7-cm5.16.1_x86_64.tar.gz
-rw-r--r-- 1 root root 166M May 14 20:21 jdk-8u45-linux-x64.gz
-rw-r--r-- 1 root root  65K May 14 20:17 manifest.json
-rw-r--r-- 1 root root 523M May 15 09:28 mysql-5.7.11-linux-glibc2.5-x86_64.tar.gz
-rw-r--r-- 1 root root 984K May 15 09:10 mysql-connector-java-5.1.47.jar
#mysql的jar包一定要去掉版本号~，有坑
[root@hadoop001 cdh6.16.1]# cp mysql-connector-java-5.1.47.jar /usr/share/java/mysql-connector-java.jar

mkdir /opt/cloudera-manager
tar -zxvf cloudera-manager-centos7-cm5.16.1_x86_64.tar.gz -C /opt/cloudera-manager
/
sed -i "s/server_host=localhost/server_host=hadoop001/g" /opt/cloudera-manager/cm-5.16.1/etc/cloudera-scm-agent/config.ini

sed -i "s/server_host=localhost/server_host=hadoop001/g" /opt/cloudera-manager/cm-5.16.1/etc/cloudera-scm-agent/config.ini

vi /opt/cloudera-manager/cm-5.16.1/etc/cloudera-scm-server/db.properties

com.cloudera.cmf.db.type=mysql
com.cloudera.cmf.db.host=hadoop001
com.cloudera.cmf.db.name=cmf
com.cloudera.cmf.db.user=cmf
com.cloudera.cmf.db.password=ruozedata123
com.cloudera.cmf.db.setupType=EXTERNAL

#创建cloudera-scm
useradd --system --home=/opt/cloudera-manager/cm-5.16.1/run/cloudera-scm-server/ --no-create-home --shell=/bin/false --comment "Cloudera SCM User" cloudera-scm
#修改cloudera-manager的权限
chown -R cloudera-scm:cloudera-scm /opt/cloudera-manager

chown -R cloudera-scm:cloudera-scm /opt/cloudera-manager

mkdir -p /opt/cloudera/parcel-repo

[root@hadoop001 opt]# cd ~/cdh6.16.1/
[root@hadoop001 cdh6.16.1]# ls -lh
total 3.5G
-rw-r--r-- 1 root root 2.0G May 15 10:01 CDH-5.16.1-1.cdh6.16.1.p0.3-el7.parcel
-rw-r--r-- 1 root root   41 May 14 20:17 CDH-5.16.1-1.cdh6.16.1.p0.3-el7.parcel.sha1
-rw-r--r-- 1 root root 803M May 15 09:38 cloudera-manager-centos7-cm5.16.1_x86_64.tar.gz
-rw-r--r-- 1 root root 166M May 14 20:21 jdk-8u45-linux-x64.gz
-rw-r--r-- 1 root root  65K May 14 20:17 manifest.json
-rw-r--r-- 1 root root 523M May 15 09:28 mysql-5.7.11-linux-glibc2.5-x86_64.tar.gz
-rw-r--r-- 1 root root 984K May 15 09:10 mysql-connector-java-5.1.47.jar

[root@hadoop001 cdh6.16.1]# mv CDH-5.16.1-1.cdh6.16.1.p0.3-el7.parcel.sha1 /opt/cloudera/parcel-repo/CDH-5.16.1-1.cdh6.16.1.p0.3-el7.parcel.sha

#切记mv时，重命名去掉1，不然在部署过程CM认为如上⽂件下载未完整，会持续下载

[root@hadoop001 cdh6.16.1]# mv CDH-5.16.1-1.cdh6.16.1.p0.3-el7.parcel /opt/cloudera/parcel-repo/

[root@hadoop001 cdh6.16.1]# mv manifest.json  /opt/cloudera/parcel-repo/

[root@hadoop001 parcel-repo]# cat CDH-5.16.1-1.cdh6.16.1.p0.3-el7.parcel.sha
703728dfa7690861ecd3a9bcd412b04ac8de7148
#计算下载文件的值，进行对比
[root@hadoop001 parcel-repo]# sha1sum CDH-5.16.1-1.cdh6.16.1.p0.3-el7.parcel
703728dfa7690861ecd3a9bcd412b04ac8de7148  CDH-5.16.1-1.cdh6.16.1.p0.3-el7.parcel
#相同，可以正常使用

chown -R cloudera-scm:cloudera-scm /opt/cloudera/parcel-repo/

mkdir -p /opt/cloudera/parcels
chown -R cloudera-scm:cloudera-scm /opt/cloudera/

4.1 启动server
/opt/cloudera-manager/cm-5.16.1/etc/init.d/cloudera-scm-server start
4.2 阿⾥云web界⾯，设置该hadoop001节点防⽕墙放开7180端⼝
4.3 等待1min，打开 http://hadoop001:7180 账号密码:admin/admin
4.4 假如打不开，去看server的log，根据错误仔细排查错误 
    log路径在/opt/cloudera-manager/cm-5.16.1/log/cloudera-scm-server

/opt/cloudera-manager/cm-5.16.1/etc/init.d/cloudera-scm-agent start

13.1.建议将/proc/sys/vm/swappiness设置为最⼤值10。
swappiness值控制操作系统尝试交换内存的积极；
swappiness=0：表示最⼤限度使⽤物理内存，之后才是swap空间；
swappiness=100：表示积极使⽤swap分区，并且把内存上的数据及时搬迁到swap空间；
如果是混合服务器，不建议完全禁⽤swap，可以尝试降低swappiness。
临时调整：
sysctl vm.swappiness=10
永久调整：
cat << EOF >> /etc/sysctl.conf
# Adjust swappiness value
vm.swappiness=10
EOF
13.2.已启⽤透明⼤⻚⾯压缩，可能会导致重⼤性能问题，建议禁⽤此设置。
临时调整：
echo never > /sys/kernel/mm/transparent_hugepage/defrag
echo never > /sys/kernel/mm/transparent_hugepage/enabled
永久调整：
cat << EOF >> /etc/rc.d/rc.local
# Disable transparent_hugepage
echo never > /sys/kernel/mm/transparent_hugepage/defrag
echo never > /sys/kernel/mm/transparent_hugepage/enabled
EOF
# centos7.x系统，需要为"/etc/rc.d/rc.local"⽂件赋予执⾏权限
chmod +x /etc/rc.d/rc.local

ERROR 226616765@scm-web-17:com.cloudera.server.web.common.JsonResponse:
JsonResponse created with throwable: com.cloudera.server.web.cmf.MessageException:
A package was not selected.