如何使用 运行 PredictionIo Engine 以 MYSQL 作为数据源？
How to run PredictionIo Engine with MYSQL as a data source?
我使用第一种方法从以下link安装了PredictionIo引擎。现在我想 运行 引擎使用 MYSQL 作为 数据源。
所以我已经配置了 env.sh 文件，如下所述：
#!/usr/bin/env bash
#
# Copy this file as pio-env.sh and edit it for your site's configuration.
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# PredictionIO Main Configuration
#
# This section controls core behavior of PredictionIO. It is very likely that
# you need to change these to fit your site.
# SPARK_HOME: Apache Spark is a hard dependency and must be configured.
# SPARK_HOME=$PIO_HOME/vendors/spark-2.0.2-bin-hadoop2.7
SPARK_HOME=$PIO_HOME/vendors/spark-2.1.1-bin-hadoop2.6
POSTGRES_JDBC_DRIVER=$PIO_HOME/lib/postgresql-42.0.0.jar
MYSQL_JDBC_DRIVER=$PIO_HOME/lib/mysql-connector-java-8.0.11.jar
# PredictionIO Storage Configuration
#
# This section controls programs that make use of PredictionIO's built-in
# storage facilities. Default values are shown below.
#
# For more information on storage configuration please refer to
# http://predictionio.apache.org/system/anotherdatastore/
# Storage Repositories
# Default is to use PostgreSQL
PIO_STORAGE_REPOSITORIES_METADATA_NAME=pio_meta
PIO_STORAGE_REPOSITORIES_METADATA_SOURCE=MYSQL
PIO_STORAGE_REPOSITORIES_EVENTDATA_NAME=pio_event
PIO_STORAGE_REPOSITORIES_EVENTDATA_SOURCE=MYSQL
PIO_STORAGE_REPOSITORIES_MODELDATA_NAME=pio_model
PIO_STORAGE_REPOSITORIES_MODELDATA_SOURCE=MYSQL
# Storage Data Sources
# PostgreSQL Default Settings
# Please change "pio" to your database name in PIO_STORAGE_SOURCES_PGSQL_URL
# Please change PIO_STORAGE_SOURCES_PGSQL_USERNAME and
# PIO_STORAGE_SOURCES_PGSQL_PASSWORD accordingly
PIO_STORAGE_SOURCES_PGSQL_TYPE=jdbc
PIO_STORAGE_SOURCES_PGSQL_URL=jdbc:postgresql://localhost/pio
PIO_STORAGE_SOURCES_PGSQL_USERNAME=pio
PIO_STORAGE_SOURCES_PGSQL_PASSWORD=pio
# MySQL Example
PIO_STORAGE_SOURCES_MYSQL_TYPE=jdbc
PIO_STORAGE_SOURCES_MYSQL_URL=jdbc:mysql://localhost:3306/pio
PIO_STORAGE_SOURCES_MYSQL_USERNAME=root
PIO_STORAGE_SOURCES_MYSQL_PASSWORD=root
我还将 mysql-java-connector jar 放在 pio_home/lib 目录中。
但是，当我使用 运行 pio status 命令时，出现以下错误：
[INFO] [Management$] PredictionIO 0.12.1 is installed at /home/oodles/predictionio/PredictionIO-0.12.1
[INFO] [Management$] Inspecting Apache Spark...
[INFO] [Management$] Apache Spark is installed at /home/oodles/predictionio/PredictionIO-0.12.1/vendors/spark-2.1.1-bin-hadoop2.6
[INFO] [Management$] Apache Spark 2.1.1 detected (meets minimum requirement of 1.3.0)
[INFO] [Management$] Inspecting storage backend connections...
[INFO] [Storage$] Verifying Meta Data Backend (Source: MYSQL)...
[ERROR] [Management$] Unable to connect to all storage backends successfully.
The following shows the error message from the storage backend.
No suitable driver found for jdbc:mysql://localhost:3306/pio (java.sql.SQLException)
Dumping configuration of initialized storage backend sources.
Please make sure they are correct.
Source Name: MYSQL; Type: jdbc; Configuration: PASSWORD -> root, URL -> jdbc:mysql://localhost:3306/pio, TYPE -> jdbc, USERNAME -> root
有人可以帮我解决这个问题吗？
在 env.sh 文件中将 jdbc:mysql://localhost:3306/pio 更改为 jdbc:mysql://localhost/pio
我遇到了同样的问题，这是因为 JDBC 驱动程序没有安装，虽然你会认为它来自 pio-env.sh 说有某种 jar 文件。您要做的是转到此站点 https://dev.mysql.com/downloads/connector/j/，然后选择 "Platform Independent" 选项，然后单击下载按钮。这个 Oracle 网站试图让您注册某些东西，但不要这样做。转到显示 "No thanks, just start my download" 的页面底部，然后右键单击并保存 link。您现在可以使用 "wget" 命令获取文件，然后在 linux/ubuntu 环境中解压缩该文件。我忘记解压命令文件是什么了。我对 linux/unix 环境一窍不通，但这对我来说确实适用于 PIO。
我使用第一种方法从以下link安装了PredictionIo引擎。现在我想 运行 引擎使用 MYSQL 作为 数据源。
所以我已经配置了 env.sh 文件，如下所述：
#!/usr/bin/env bash
#
# Copy this file as pio-env.sh and edit it for your site's configuration.
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# PredictionIO Main Configuration
#
# This section controls core behavior of PredictionIO. It is very likely that
# you need to change these to fit your site.
# SPARK_HOME: Apache Spark is a hard dependency and must be configured.
# SPARK_HOME=$PIO_HOME/vendors/spark-2.0.2-bin-hadoop2.7
SPARK_HOME=$PIO_HOME/vendors/spark-2.1.1-bin-hadoop2.6
POSTGRES_JDBC_DRIVER=$PIO_HOME/lib/postgresql-42.0.0.jar
MYSQL_JDBC_DRIVER=$PIO_HOME/lib/mysql-connector-java-8.0.11.jar
# PredictionIO Storage Configuration
#
# This section controls programs that make use of PredictionIO's built-in
# storage facilities. Default values are shown below.
#
# For more information on storage configuration please refer to
# http://predictionio.apache.org/system/anotherdatastore/
# Storage Repositories
# Default is to use PostgreSQL
PIO_STORAGE_REPOSITORIES_METADATA_NAME=pio_meta
PIO_STORAGE_REPOSITORIES_METADATA_SOURCE=MYSQL
PIO_STORAGE_REPOSITORIES_EVENTDATA_NAME=pio_event
PIO_STORAGE_REPOSITORIES_EVENTDATA_SOURCE=MYSQL
PIO_STORAGE_REPOSITORIES_MODELDATA_NAME=pio_model
PIO_STORAGE_REPOSITORIES_MODELDATA_SOURCE=MYSQL
# Storage Data Sources
# PostgreSQL Default Settings
# Please change "pio" to your database name in PIO_STORAGE_SOURCES_PGSQL_URL
# Please change PIO_STORAGE_SOURCES_PGSQL_USERNAME and
# PIO_STORAGE_SOURCES_PGSQL_PASSWORD accordingly
PIO_STORAGE_SOURCES_PGSQL_TYPE=jdbc
PIO_STORAGE_SOURCES_PGSQL_URL=jdbc:postgresql://localhost/pio
PIO_STORAGE_SOURCES_PGSQL_USERNAME=pio
PIO_STORAGE_SOURCES_PGSQL_PASSWORD=pio
# MySQL Example
PIO_STORAGE_SOURCES_MYSQL_TYPE=jdbc
PIO_STORAGE_SOURCES_MYSQL_URL=jdbc:mysql://localhost:3306/pio
PIO_STORAGE_SOURCES_MYSQL_USERNAME=root
PIO_STORAGE_SOURCES_MYSQL_PASSWORD=root
我还将 mysql-java-connector jar 放在 pio_home/lib 目录中。 但是，当我使用 运行 pio status 命令时，出现以下错误：
[INFO] [Management$] PredictionIO 0.12.1 is installed at /home/oodles/predictionio/PredictionIO-0.12.1
[INFO] [Management$] Inspecting Apache Spark...
[INFO] [Management$] Apache Spark is installed at /home/oodles/predictionio/PredictionIO-0.12.1/vendors/spark-2.1.1-bin-hadoop2.6
[INFO] [Management$] Apache Spark 2.1.1 detected (meets minimum requirement of 1.3.0)
[INFO] [Management$] Inspecting storage backend connections...
[INFO] [Storage$] Verifying Meta Data Backend (Source: MYSQL)...
[ERROR] [Management$] Unable to connect to all storage backends successfully.
The following shows the error message from the storage backend.
No suitable driver found for jdbc:mysql://localhost:3306/pio (java.sql.SQLException)
Dumping configuration of initialized storage backend sources.
Please make sure they are correct.
Source Name: MYSQL; Type: jdbc; Configuration: PASSWORD -> root, URL -> jdbc:mysql://localhost:3306/pio, TYPE -> jdbc, USERNAME -> root
有人可以帮我解决这个问题吗？
在 env.sh 文件中将 jdbc:mysql://localhost:3306/pio 更改为 jdbc:mysql://localhost/pio
我遇到了同样的问题，这是因为 JDBC 驱动程序没有安装，虽然你会认为它来自 pio-env.sh 说有某种 jar 文件。您要做的是转到此站点 https://dev.mysql.com/downloads/connector/j/，然后选择 "Platform Independent" 选项，然后单击下载按钮。这个 Oracle 网站试图让您注册某些东西，但不要这样做。转到显示 "No thanks, just start my download" 的页面底部，然后右键单击并保存 link。您现在可以使用 "wget" 命令获取文件，然后在 linux/ubuntu 环境中解压缩该文件。我忘记解压命令文件是什么了。我对 linux/unix 环境一窍不通，但这对我来说确实适用于 PIO。