不多说，直接上干货！

　　Hue配置文件里，提及到，提供有postgresql_psycopg2, mysql, sqlite3 or oracle。

　　 注意：Hue本身用到的是sqlite3。

　　在哪里呢，怎么看呢？

　　desktop.db这个就是Hue用的 sqlite3数据库。

https://www.cloudera.com/documentation/enterprise/latest/topics/cdh_ig_hue_config.html#concept_ezg_b2s_hl

　　　　首先，看下官网的参考步骤

http://archive.cloudera.com/cdh5/cdh/5/hue-3.9.0-cdh5.5.0/manual.html

一、以下是默认的配置文件

 # Configuration options for specifying the Desktop Database. For more info,# see http://docs.djangoproject.com/en/1.4/ref/settings/#database-engine# ------------------------------------------------------------------------[[database]]# Database engine is typically one of:# postgresql_psycopg2, mysql, sqlite3 or oracle.## Note that for sqlite3, 'name', below is a path to the filename. For other backends, it is the database name.# Note for Oracle, options={"threaded":true} must be set in order to avoid crashes.# Note for Oracle, you can use the Oracle Service Name by setting "port=0" and then "name=<host>:<port>/<service_name>".# Note for MariaDB use the 'mysql' engine.## engine=sqlite3## host=## port=## user=## password=## name=desktop/desktop.db## options={}

###########################################################################
# Settings for the RDBMS application
###########################################################################[librdbms]# The RDBMS app can have any number of databases configured in the databases# section. A database is known by its section name# (IE sqlite, mysql, psql, and oracle in the list below).[[databases]]# sqlite configuration.## [[[sqlite]]]# Name to show in the UI.## nice_name=SQLite# For SQLite, name defines the path to the database.## name=/tmp/sqlite.db# Database backend to use.## engine=sqlite# Database options to send to the server when connecting.# https://docs.djangoproject.com/en/1.4/ref/databases/## options={}# mysql, oracle, or postgresql configuration.## [[[mysql]]]# Name to show in the UI.## nice_name="My SQL DB"# For MySQL and PostgreSQL, name is the name of the database.# For Oracle, Name is instance of the Oracle server. For express edition# this is 'xe' by default.## name=mysqldb# Database backend to use. This can be:# 1. mysql# 2. postgresql# 3. oracle## engine=mysql# IP or hostname of the database to connect to.## host=localhost# Port the database server is listening to. Defaults are:# 1. MySQL: 3306# 2. PostgreSQL: 5432# 3. Oracle Express Edition: 1521## port=3306# Username to authenticate with when connecting to the database.## user=example# Password matching the username to authenticate with when# connecting to the database.## password=example# Database options to send to the server when connecting.# https://docs.djangoproject.com/en/1.4/ref/databases/## options={}

二、以下是跟我机器集群匹配的配置文件（非HA集群下怎么配置Hue的database模块）

###########################################################################
# Settings for the RDBMS application
###########################################################################[librdbms]# The RDBMS app can have any number of databases configured in the databases# section. A database is known by its section name# (IE sqlite, mysql, psql, and oracle in the list below).[[databases]]# sqlite configuration.[[[sqlite]]]# Name to show in the UI.nice_name=SQLite# For SQLite, name defines the path to the database.name=/home/hadoop/app/hue/desktop/desktop.db# Database backend to use.engine=sqlite

    # mysql, oracle, or postgresql configuration.[[[mysql]]]# Name to show in the UI.nice_name="My SQL DB"# For MySQL and PostgreSQL, name is the name of the database.# For Oracle, Name is instance of the Oracle server. For express edition# this is 'xe' by default.name=test# Database backend to use. This can be:# 1. mysql# 2. postgresql# 3. oracleengine=mysql# IP or hostname of the database to connect to.host=bigdatamaster# Port the database server is listening to. Defaults are:# 1. MySQL: 3306# 2. PostgreSQL: 5432# 3. Oracle Express Edition: 1521port=3306# Username to authenticate with when connecting to the database.user=root# Password matching the username to authenticate with when# connecting to the database.password=rootroot# Database options to send to the server when connecting.# https://docs.djangoproject.com/en/1.4/ref/databases/## options={}

　　

　　当然，这里，也可以用hive里安装的mysql里的数据库hive（命名）。（我一般用这种）

　　

hive> show databases;
OK
default
hive
Time taken: 0.074 seconds, Fetched: 2 row(s)
hive> 

    # mysql, oracle, or postgresql configuration.[[[mysql]]]# Name to show in the UI.nice_name="My SQL DB"# For MySQL and PostgreSQL, name is the name of the database.# For Oracle, Name is instance of the Oracle server. For express edition# this is 'xe' by default.name=hive# Database backend to use. This can be:# 1. mysql# 2. postgresql# 3. oracleengine=mysql# IP or hostname of the database to connect to.host=bigdatamaster# Port the database server is listening to. Defaults are:# 1. MySQL: 3306# 2. PostgreSQL: 5432# 3. Oracle Express Edition: 1521port=3306# Username to authenticate with when connecting to the database.user=hive# Password matching the username to authenticate with when# connecting to the database.password=hive# Database options to send to the server when connecting.# https://docs.djangoproject.com/en/1.4/ref/databases/## options={}

　　最后的界面，如下

三、以下是跟我机器集群匹配的配置文件（HA集群下怎么配置Hue的database模块）

　

<configuration><property><name>javax.jdo.option.ConnectionURL</name><value>jdbc:mysql://bigdata-pro01.kfk.com:3306/metastore?createDatabaseIfNotExist=true</value></property><property><name>javax.jdo.option.ConnectionDriverName</name><value>com.mysql.jdbc.Driver</value></property><property><name>javax.jdo.option.ConnectionUserName</name><value>root</value></property><property><name>javax.jdo.option.ConnectionPassword</name><value>root</value></property><property><name>hive.cli.print.header</name><value>true</value><description>Whether to print the names of the columns in query output.</description></property><property><name>hive.cli.print.current.db</name><value>true</value><description>Whether to include the current database in the Hive prompt.</description></property><property><name>hbase.zookeeper.quorum</name><value>bigdata-pro01.kfk.com,bigdata-pro02.kfk.com,bigdata-pro03.kfk.com</value></property>
</configuration>

　　所以，我这里设置如下：

###########################################################################
# Settings for the RDBMS application
###########################################################################[librdbms]# The RDBMS app can have any number of databases configured in the databases# section. A database is known by its section name# (IE sqlite, mysql, psql, and oracle in the list below).[[databases]]# sqlite configuration.[[[sqlite]]]# Name to show in the UI.nice_name=SQLite# For SQLite, name defines the path to the database.name=/opt/modules/hue-3.9.0-cdh5.5.0/desktop/desktop.db# Database backend to use.engine=sqlite# Database options to send to the server when connecting.# https://docs.djangoproject.com/en/1.4/ref/databases/## options={}# mysql, oracle, or postgresql configuration.[[[mysql]]]# Name to show in the UI.nice_name="My SQL DB"# For MySQL and PostgreSQL, name is the name of the database.# For Oracle, Name is instance of the Oracle server. For express edition# this is 'xe' by default.name=metastore# Database backend to use. This can be:# 1. mysql# 2. postgresql# 3. oracleengine=mysql# IP or hostname of the database to connect to.host=bigdata-pro01.kfk.com# Port the database server is listening to. Defaults are:# 1. MySQL: 3306# 2. PostgreSQL: 5432# 3. Oracle Express Edition: 1521port=3306# Username to authenticate with when connecting to the database.user=root# Password matching the username to authenticate with when# connecting to the database.password=root# Database options to send to the server when connecting.# https://docs.djangoproject.com/en/1.4/ref/databases/## options={}

　　然后，关闭mysql，再重启mysql，重启一下hue。

　再，停掉mysql，重启mysql和hue

[kfk@bigdata-pro01 conf]$ sudo service mysqld restart
Stopping mysqld:                                           [  OK  ]
Starting mysqld:                                           [  OK  ]
[kfk@bigdata-pro01 conf]$ 







[kfk@bigdata-pro01 hue-3.9.0-cdh5.5.0]$ ./build/env/bin/supervisor
[INFO] Not running as root, skipping privilege drop
starting server with options:
{'daemonize': False,'host': 'bigdata-pro01.kfk.com','pidfile': None,'port': 8888, 'server_group': 'hue', 'server_name': 'localhost', 'server_user': 'hue', 'ssl_certificate': None, 'ssl_cipher_list': 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA', 'ssl_private_key': None, 'threads': 40, 'workdir': None}












总结：


　　　　即，Hue的服务器（名字为My SQL DB，一般是mysql, oracle, or postgresql）。通常用mysql。


　　　　　　那么，它的数据库是metastore，是在hive里新建的mysql来充当它的元数据库。




 <property><name>javax.jdo.option.ConnectionURL</name><value>jdbc:mysql://master:3306/metastore?createDatabaseIfNotExist=true</value></property>


　　　　Hue的服务器（名字为SQLite），那么它的数据库是/opt/modules/hue-3.9.0-cdh5.5.0/desktop/desktop.db





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转载于:https://www.cnblogs.com/zlslch/p/6818229.html
												


											

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