http://site.clairvoyantsoft.com/migrate-cloudera-scm-database-from-postgresql-to-mysql/

http://node0:7180/api/v14/cm/deployment ——–正確網址。

1.停止服務；

1.在UI界面，停止集群； 2.在UI界面，停止cm的service，monitor等全部服務； 3.在Linux，停止agent服務：service cloudera-scm-agent stop

2.備份CM配置，通過API ——

$ curl -v -u admin:admin http://node0:7180/api/<version>/cm/deployment > /home/user/deployment 本機： $ curl -v -u admin:admin http://node0:7180/api/v14/cm/deployment > /home/user/deployment

注意：這個文件被保留和保護至關重要,因為它將需要重新導入功能配置到新數據庫中。（v14）
Obtain version with: http://manager_host:7180/api/version

3.對postgre的db和server目錄做備份。

#cd /var/lib/cloudera-scm-server-db/ #tar -cvf /home/user/cloudera-scm-server-db.tar . #cd /etc/cloudera-scm-server/ #tar -cvf /home/user/cloudera-scm-server.tar .

文件歸檔在 /home/user/ 下。

4.在server端，停止server，停止server-db，拋棄server-db off

$ sudo service cloudera-scm-server stop $ sudo service cloudera-scm-server-db stop $ sudo chkconfig cloudera-scm-server-db off

5.保證mysql server正確安裝。——————–[1]

6.安裝、配置mysql軟件——[2]

7.創建”temp” db 并且賦權限，記錄“示例1:運行腳本當MySQL安裝在另一個主機”[3]

#mysql -h mysql_hostname -u user -p mysql> create database temp; mysql> grant all on *.* to 'temp'@'%' identified by 'temp' with grant option;

8.執行/usr/share/cmf/schema/scm_prepare_database.sh(可重置)

$/usr/share/cmf/schema/scm_prepare_database.sh mysql -h mysql_hostname -u user -p --scm-host manager_host <scm_db_name> <scm_user> <scm_password>

Note: run $ /usr/share/cmf/schema/scm_prepare_database.sh
with no arguments to get syntax assistance

9.開啟server服務。

service httpd start $ sudo service cloudera-scm-server start

10.Cloudera Manager web用戶界面登錄和上傳企業許可證密鑰。

11.重啟scm-server

$ sudo service cloudera-scm-server restart

12.修復CM配置（step2），通過API—

$ curl --upload-file /home/user/deployment -u admin:admin http://node0:7180/api/v14/cm/deployment?deleteCurrentDeployment=true -H "Content-Type: application/json" //add http header option（恢復集群的命令）： -H "Content-Type: application/json" ..if required //verify that there are no errors, the command prints the api even on connection failure.

13.登錄CM，驗證當前的配置選項。所有服務現在應該可用但是停止狀態。

嘗試，所有主機-重新運行升級向導。

14.cleanup:

$ yum erase cloudera-manager-server-sb

15.如果scm-agent啟動失敗，你必須刪除或者一出pid ./var/lib/cloudera-scm-agent/ 并且重啟agent。

參考網址

[1] http://www.cloudera.com/documentation/enterprise/latest/topics/cm_ig_mysql.html#cmig_topic_5_5_2
[2] http://dev.mysql.com/downloads/mysql/
[3] http://www.cloudera.com/documentation/enterprise/latest/topics/cm_ig_installing_configuring_dbs.html#concept_i2r_m3m_hn__example_fsj_cyp_bm
[4] ref: https://gist.github.com/gwenshap/7044525
[5] http://site.clairvoyantsoft.com/migrate-cloudera-scm-database-from-postgresql-to-mysql/【譯】
http://cwiki.apachecn.org/pages/viewpage.action?pageId=2888090

參考網址1—–配置mysql server和jdbc driver：
1.

參考網址3：在另一臺主機配置mysql2，連接mysql1。

---

3、 查看postgresql 的scm用戶的密碼
grep password /etc/cloudera-scm-server/db.properties
會得到如下信息：
[root@hadoop1 /]# grep password /etc/cloudera-scm-server/db.properties
com.cloudera.cmf.db.password=pfxlUudKJo

4、 登陸postgresql 數據庫
psql -h localhost -p 7432 -U scm
輸入第三步查到的密碼

/usr/share/cmf/schema/scm_prepare_database.sh postgresql scm scm scm

/etc/init.d/cloudera-manager-server-db restart

http://blog.csdn.net/dracotianlong/article/details/7907633
http://blog.csdn.net/mirabelle521/article/details/71169631

guid刪除，重新運行升級向導
/var/lib/cloudera-scm-agent/cm_guid 刪除guid–主機狀況不良（由于原集群的guid存在唯一性，過時）
—http://blog.csdn.net/wonder4/article/details/58585180
—http://blog.csdn.net/u011031430/article/details/74057601
—https://www.cloudera.com/documentation/enterprise/release-notes/topics/cm_rn_known_issues.html#rn_OPSAPS-34847

—重新運行升級向導

—parcel沒有分發，但是是活動的

取消parcel異常分發狀態–激活卡主

use curl -X POST with Cloudera API.
http://node0:7180/api/v14/cm/deployment中找到相應的配置。
格式API文檔：http://node0:7180/static/apidocs/

curl -u admin:admin -X POST http://node0:7180/api/v14/clusters/cluster/parcels/products/KAFKA/versions/2.0.2-1.2.0.2.p0.5/commands/deactivatecurl -u admin:admin -X POST http://node0:7180/api/v14/clusters/cluster/parcels/products/CDH/versions/5.8.0-1.cdh5.8.0.p0.42/commands/deactivate

http://community.cloudera.com/t5/Cloudera-Manager-Installation/Parcel-not-distributed-but-have-active-state-ACTIVATING/m-p/32474/highlight/true
ctrl + B

拒絕連接– /etc/hosts

官方文檔

https://www.cloudera.com/documentation/enterprise/latest/topics/installation.html

總結

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