CDH-节点扩展

扩展步骤：

1. 准备环境：jdk-1.8、python-2.7、修改hosts环境、安装ntp、关闭防火墙
2. 建目录，并将parcel-repo的包拷贝过来

| --/opt
      |--/cloudera
                 |--/parcels
                 |--/parcel-repo
                               |--/CDH-5.15.1-1.cdh5.15.1.p0.4-xenial.parcel
                               |--/CDH-5.15.1-1.cdh5.15.1.p0.4-xenial.parcel.sha
                               |--/manifest.json
      |--/cm-5.15.1

3. 拷贝压缩包cloudera-manager-xenial-cm5.15.1_amd64.tar.gz，解压：tar -zxf cloudera-manager-xenial-cm5.15.1_amd64.tar.gz -C /opt
   注意：此处不能偷懒直接用线上已解压好的，不然CDH界面会出现节点相互替换显示的情况。始终不会显示全部节点
4. 保险起见我还是安装了下面包（暂不知作用）

apt-get install libmysqlclient-dev

# pip install mysql-python

apt-get install python-lxml

apt-get install apache2

5. 安装mysql-connector-java包：apt-get install libmysql-java
6. 软连接：ln -s /usr/share/java/mysql-connector-java.jar /opt/cm-5.15.1/share/cmf/lib/mysql-connector-java.jar
7. 创建用户cloudera-scm
   sudo useradd --system --home=/opt/cloudera-manager/cm-5.15.1/run/cloudera-scm-server --no-create-home --shell=/bin/false --comment "Cloudera SCM User" cloudera-scm
8. 启动节点

cd /opt/cm-5.15.1/etc/init.d
./cloudera-scm-agent start

9.界面安装
主机 -> 向集群添加新主机

---

问题1：

ProtocolError: 
[01/Dec/2018 20:23:29 +0000] 30267 MainThread agent ERROR Failed to connect to newly launched supervisor. Agent will exit
[01/Dec/2018 20:23:29 +0000] 30267 MainThread agent INFO Stopping agent...
[01/Dec/2018 20:23:29 +0000] 30267 MainThread agent INFO No extant cgroups; unmounting any cgroup roots
[01/Dec/2018 20:23:29 +0000] 30267 Dummy-1 daemonize WARNING Stopping daemon.

问题1解决办法1：

[root@dip001 ~]# ps -ef | grep supervisord
root 24491 1 0 11月30 ? 00:00:34 /usr/lib64/cmf/agent/build/env/bin/python /usr/lib64/cmf/agent/build/env/bin/supervisord
root 30335 30312 0 20:27 pts/0 00:00:00 grep --color=auto supervisord

[root@dip001 ~]# kill -9 24491
[root@dip001 ~]# ps -ef | grep supervisord
root 30338 30312 0 20:27 pts/0 00:00:00 grep --color=auto supervisord

问题1解决办法2：
解决方法1对我无效，在尝试多次后，重启了节点网络后生效了
sudo /etc/init.d/networking restart 注意，此处是针对ubuntu系统的命令