說在前面的話

　　我的機器是總共4臺，分別為ubuntucmbigdata1、ubuntucmbigdata2、ubuntucmbigdata3和ubuntucmbigdata4。（注意啦，以下是針對Ubuntu系統的）

　　在ubuntucmbigdata1上執行了

sudo apt-get install cloudera-manager-daemons  cloudera-manager-server 


sudo apt-get install cloudera-manager-daemons  cloudera-manager-agent 

　　即，ubuntucmbigdata1是既做server，又做agent。

　　在ubuntucmbigdata2、ubuntucmbigdata3和ubuntucmbigdata4上執行了

sudo apt-get install cloudera-manager-daemons  cloudera-manager-agent 

　　即，ubuntucmbigdata2、3、和4是隻做agent。

　　在ubuntucmbigdata1、ubuntucmbigdata2、ubuntucmbigdata3、ubuntucmbigdata4上

新建檔案sudo vi /etc/apt/sources.list.d/cloudera-manager.list

# Packages for Cloudera Manager, Version 5, on Ubuntu 14.04 x86_64
deb [arch=amd64] http://archive.cloudera.com/cm5/ubuntu/trusty/amd64/cm trusty-cm5 contrib
deb-src http://archive.cloudera.com/cm5/ubuntu/trusty/amd64/cm trusty-cm5 contrib

　　並且在在ubuntucmbigdata1、ubuntucmbigdata2、ubuntucmbigdata3、ubuntucmbigdata4上

　　向apt新增cloudera源公鑰，在所有節點執行如下命令：

curl -s http://archive.cloudera.com/cm5/ubuntu/trusty/amd64/cm/archive.key | sudo apt-key add -

然後，再

sudo apt-get update

 　　問題詳情

解決辦法

　　思路1：

　　思路2：

 　　檢視cloudera-scm-agent的執行日誌

[email protected]:/opt/cm-5.6.0/log$ ll
total 20
drwxr-xr-x 5 bigdata bigdata 4096  2月 12  2016 ./
drwxr-xr-x 8 bigdata bigdata 4096  2月 12  2016 ../
drwxr-xr-x 2 bigdata bigdata 4096  6月 25 19:53 cloudera-scm-agent/
drwxr-xr-x 2 bigdata bigdata 4096  6月 25 19:52 cloudera-scm-server/
drwxr-xr-x 2 bigdata bigdata 4096  2月 12  2016 cmf/
[email protected]:/opt/cm-5.6.0/log$ cd cloudera-scm-agent/
[email protected]:/opt/cm-5.6.0/log/cloudera-scm-agent$ ll
total 40
drwxr-xr-x 2 bigdata bigdata  4096  6月 25 19:53 ./
drwxr-xr-x 5 bigdata bigdata  4096  2月 12  2016 ../
-rw-r--r-- 1 root    root    14757  6月 25 19:57 cloudera-scm-agent.log
-rw-r--r-- 1 root    root      935  6月 25 19:53 cloudera-scm-agent.out
-rw-r--r-- 1 root    root      202  6月 25 19:53 cmf_listener.log
-rw-r--r-- 1 root    root      539  6月 25 19:53 supervisord.log
-rw-r--r-- 1 root    root      449  6月 25 19:53 supervisord.out
[email protected]:/opt/cm-5.6.0/log/cloudera-scm-agent$ cat cloudera-scm-agent.out 
[25/Jun/2017 19:53:01 +0000] 9651 MainThread agent        INFO     SCM Agent Version: 5.6.0
[25/Jun/2017 19:53:01 +0000] 9651 MainThread util         INFO     Generating Agent UUID for the first time: '/opt/cm-5.6.0/lib/cloudera-scm-agent/uuid'
[25/Jun/2017 19:53:01 +0000] 9651 MainThread agent        INFO     Adding env vars that start with CMF_AGENT_
[25/Jun/2017 19:53:01 +0000] 9651 MainThread agent        INFO     explicitly passing env var to supervisee: MGMT_HOME: /opt/cm-5.6.0/share/cmf
[25/Jun/2017 19:53:01 +0000] 9651 MainThread agent        INFO     explicitly passing env var to supervisee: ROOT: /opt/cm-5.6.0/lib/cmf
[25/Jun/2017 19:53:01 +0000] 9651 MainThread agent        INFO     Logging to /opt/cm-5.6.0/log/cloudera-scm-agent/cloudera-scm-agent.log
Error: could not find config file /opt/cm-5.6.0/run/cloudera-scm-agent/supervisor/supervisord.conf
For help, use /opt/cm-5.6.0/lib/cmf/agent/src/cmf/agent.py -h
[email protected]:/opt/cm-5.6.0/log/cloudera-scm-agent$ 

　　當cloudera-scm-server、cloudera-scm-agent start啟動成功之後，可通過http://主節點IP:7180來訪問CM，使用者名稱密碼都為admin。剩下的就是一直點下一步和根據具體的需求來配置叢集了。

　注意，在此之前。

 　　注意，在此之前。

　　ubuntucmbigdata1機器上，則需要執行

[email protected]:~$ sudo /usr/share/cmf/schema/scm_prepare_database.sh mysql scm scm scm_password

[sudo] password for bigdata: 
Sorry, try again.
[sudo] password for bigdata: 
JAVA_HOME=/usr/java/jdk1.7.0_80
Verifying that we can write to /etc/cloudera-scm-server
Creating SCM configuration file in /etc/cloudera-scm-server
Executing:  /usr/java/jdk1.7.0_80/bin/java -cp /usr/share/java/mysql-connector-java.jar:/usr/share/java/oracle-connector-java.jar:/usr/share/cmf/schema/../lib/* com.cloudera.enterprise.dbutil.DbCommandExecutor /etc/cloudera-scm-server/db.properties com.cloudera.cmf.db.
[                          main] DbCommandExecutor              INFO  Successfully connected to database.
All done, your SCM database is configured correctly!

[email protected]ubuntucmbigdata1:~$ sudo service cloudera-scm-server start
[sudo] password for bigdata: 
Starting cloudera-scm-server: * cloudera-scm-server started

[email protected]:~$

[email protected]ubuntucmbigdata1:~$ sudo service cloudera-scm-agent start
[sudo] password for bigdata: 
Starting cloudera-scm-agent: * cloudera-scm-agent started

[email protected]:~$

　　然後，在ubuntucmbigdata2、ubuntucmbigdata3、ubuntucmbigdata4上

[email protected]ubuntucmbigdata2:~$ sudo service cloudera-scm-agent start
[sudo] password for bigdata: 
Starting cloudera-scm-agent: * cloudera-scm-agent started

[email protected]:~$

[email protected]ubuntucmbigdata3:~$ sudo service cloudera-scm-agent start
[sudo] password for bigdata: 
Starting cloudera-scm-agent: * cloudera-scm-agent started

[email protected]:~$

[email protected]ubuntucmbigdata4:~$ sudo service cloudera-scm-agent start
[sudo] password for bigdata: 
Starting cloudera-scm-agent: * cloudera-scm-agent started

[email protected]:~$

　　思路3：

　　關閉這臺機器的防火牆

[email protected]:/opt$ sudo ufw disable
Firewall stopped and disabled on system startup
[email protected]:/opt$ sudo ufw status
Status: inactive
[email protected]:/opt$ 

　　思路4：

[email protected]:/opt/cm-5.6.0/etc$ netstat -nltp
(No info could be read for "-p": geteuid()=1000 but you should be root.)
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      -               
tcp        0      0 127.0.0.1:631           0.0.0.0:*               LISTEN      -               
tcp        0      0 127.0.0.1:19001         0.0.0.0:*               LISTEN      -               
tcp        0      0 127.0.0.1:6010          0.0.0.0:*               LISTEN      -               
tcp        0      0 127.0.0.1:6011          0.0.0.0:*               LISTEN      -               
tcp        0      0 127.0.0.1:6012          0.0.0.0:*               LISTEN      -               
tcp        0      0 127.0.1.1:9000          0.0.0.0:*               LISTEN      -               
tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN      -               
tcp6       0      0 :::22                   :::*                    LISTEN      -               
tcp6       0      0 ::1:631                 :::*                    LISTEN      -               
tcp6       0      0 ::1:6010                :::*                    LISTEN      -               
tcp6       0      0 ::1:6011                :::*                    LISTEN      -               
tcp6       0      0 ::1:6012                :::*                    LISTEN      -               

　　　　思路5：

 　　　思路6：

　　　　時間同步

ntpdate pool.ntp.org

　　一般前面的6種思路是一定可以解決cloudera manager的7180 web介面訪問不了

　　思路7：（萬不得已）

　　最戳的辦法，就是

http://www.aboutyun.com/thread-8992-1-1.html （包含centos、ubuntu、debian和rehat各版本都有）

　　解除安裝它，重新來過。

正用得上，剛安裝好的CDH5的CM server啟不來，只好全部四節點解除安裝來過。

　　如在ubuntu系統下

[email protected]:/opt/softwares/cm-5.6.0$ sudo rm -Rf /usr/share/cmf /var/lib/cloudera* /var/cache/yum/cloudera*
[email protected]:/opt/softwares/cm-5.6.0$ sudo apt-get purge 'cloudera-manager-*'
[email protected]:/opt/softwares/cm-5.6.0$ sudo apt-get purge 'cloudera-manager-*' avro-tools crunch flume-ng hadoop-hdfs-fuse hadoop-hdfs-nfs3 hadoop-httpfs hbase-solr hive-hbase hive-webhcat hue-beeswax hue-hbase hue-impala hue-pig hue-plugins hue-rdbms hue-search hue-spark hue-sqoop hue-zookeeper impala impala-shell kite llama mahout oozie pig pig-udf-datafu search sentry solr-mapreduce spark-python sqoop sqoop2 whirr


[email protected]:/opt/softwares/cm-5.6.0$ sudo apt-get clean
[email protected]:/opt/softwares/cm-5.6.0$ sudo rm -Rf /usr/share/cmf /var/lib/cloudera* /var/cache/yum/cloudera* /var/log/cloudera* /var/run/cloudera*
[email protected]:/opt/softwares/cm-5.6.0$ sudo rm -Rf /var/cache/apt/archives/cloudera*

　　再進一步解除安裝徹底乾淨

　　見

1、通過管理平臺分別停止元件服務和Cloudera Management Service

2、通過管理平臺登出並移除Parcles （在控制檯登出並移除，無論是安裝的Parcles還是未安裝的Parcles）

3、停止後臺服務

　　sudo service cloudera-scm-agent stop

      sudo service cloudera-scm-server stop    

　　sudo service cloudera-scm-server-db stop

      sudo service mysqld stop

4、解除安裝Cloudera Manager Server

    執行命令：sudo /usr/share/cmf/uninstall-cloudera-manager.sh

5、清理配置和快取資訊

     在所有agent上執行：sudo umount -v /var/run/cloudera-scm-agent/process

     在所有主機上執行：sudo rm -rf /usr/share/cmf;

                              sudo rm -rf /var/lib/cloudera*;

　　　　　　　　　　  sudo rm -rf  /var/cache/yum/x86_64/6/cloudera*;

　　　　　　　　　　  sudo rm -rf  /var/log/cloudera*;

　　　　　　　　　　  sudo rm -rf  /var/run/cloudera*  /etc/cloudera* 

6、解除安裝rpm安裝包

　 1）檢視 rpm -qa | grep cloudera

    2）解除安裝 for f in `rpm -qa | grep cloudera `  ; do sudo rpm -e ${f} ; done

7、清理安裝檔案

　　sudo rm -rf /var/lib/hadoop-* /var/lib/impala /var/lib/solr /var/lib/zookeeper /var/lib/hue /var/lib/oozie  /var/lib/pgsql  /var/lib/sqoop2  /data/dfs/  /data/impala/ /data/yarn/  /dfs/ /impala/ /yarn/  /var/run/hadoop-*/ /var/run/hdfs-*/ /usr/bin/hadoop* /usr/bin/zookeeper* /usr/bin/hbase* /usr/bin/hive* /usr/bin/hdfs /usr/bin/mapred /usr/bin/yarn /usr/bin/sqoop* /usr/bin/oozie /etc/hadoop* /etc/zookeeper* /etc/hive* /etc/hue /etc/impala /etc/sqoop* /etc/oozie /etc/hbase* /etc/hcatalog 

     略過其它軟體，只刪除hadoop相關

　　sudo rm -rf ` find /var/lib/alternatives/* ! -name "mta" ! -name "print" ! -name "zlibrary-ui"  -mtime -3` 

8、如果有hadoop先關程序還在，則殺死

     for u in hdfs mapred cloudera-scm hbase hue zookeeper oozie hive impala flume; do sudo kill $(ps -u $u -o pid=); done

9、清理parcel

    sudo rm -rf /opt/cloudera/parcel-cache /opt/cloudera/parcels

10、清理元件使用者

     sudo userdel hue;sudo userdel impala;sudo userdel spark;sudo userdel sentry;sudo userdel sqoop2;sudo userdel hbase;sudo userdel oozie;sudo userdel yarn;sudo userdel mapred;sudo userdel zookeeper;sudo userdel httpfs;sudo userdel solr;sudo userdel kms;sudo userdel hive;sudo userdel flume;sudo userdel hdfs;sudo userdel sqoop;sudo userdel llama;sudo userdel cloudera-scm;sudo userdel postgres;

                              

　　然後，就可以繼續了。（這是針對bin方式來安裝）

 　　更多安裝方法，請見

　　也許，你在解除安裝中，會遇到如下問題

 　　最後成功！

同時，大家可以關注我的個人部落格：

   http://www.cnblogs.com/zlslch/   和     http://www.cnblogs.com/lchzls/      http://www.cnblogs.com/sunnyDream/   

   詳情請見：http://www.cnblogs.com/zlslch/p/7473861.html

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