Meet Minimum System Requirements
To run the Hortonworks Data Platform, your system must meet minimum requirements.
Hardware Recommendations
Although there is no single hardware requirement for installing HDP, there are some basic guidelines. A complete installation of HDP 2.3 will take up about 2.5 GB of disk space. For more information about HDP hardware recommendations, see the "HDP Cluster Planning Guide."
Operating System Requirements
The following operating systems are supported:
64-bit CentOS 6
64-bit CentOS 7
64-bit Red Hat Enterprise Linux (RHEL) 6
64-bit Red Hat Enterprise Linux (RHEL) 7
64-bit Oracle Linux 6
64-bit Oracle Linux 7
64-bit SUSE Linux Enterprise Server (SLES) 11, SP3/SP4
64-bit Debian 6 - supported in first maintenance release of HDP 2.3
64-bit Ubuntu Precise (12.04) - supported in first maintenance release of HDP 2.3
Windows Server 2008, 2012
Software Requirements
Install the following software on each of your hosts:
yum(for RHEL or CentOS)zypper(for SLES)php_curl(for SLES)reposync(may not be installed by default on all SLES hosts)rpm(for RHEL, CentOS, or SLES)scpcurlwgetunziptar
In addition, if you are creating local mirror repositories as part of the installation process (see Deploying HDP in Production Data Centers with Firewalls, and you are using RHEL/CentOS/SLES, then on the mirror repo server you will need:
yum-utilscreatereporeposync
JDK Requirements
Your system must have the correct JDK installed on all cluster nodes. HDP supports the following JDKs:
Oracle JDK 1.7 64-bit update 67 or higher
Oracle JDK 1.8 64-bit update 40 or higher
OpenJDK 1.8 64-bit update 51 or higher
OpenJDK 1.7 64-bit (latest stable version recommended)
![[Important]](../common/images/admon/important.png) | Important |
|---|---|
Before enabling Kerberos in the cluster, you must deploy the Java Cryptography Extension (JCE) security policy files on all hosts in the cluster. See Installing the JCE for more information. |
The following sections describe how to install and configure the JDK.
Oracle JDK 1.7 or 1.8
Use the following instructions to manually install JDK 1.7 or JDK 1.8:
Verify that you have a
/usr/javadirectory. If not, create one:mkdir /usr/javaDownload the Oracle 64-bit JDK (jdk-7u67-linux-x64.tar.gz or jdk-8u51-linux-x64.tar.gz) from the Oracle download site. Open a web browser and navigate to http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html or http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html.
Copy the downloaded
jdk.tar.gzfile to the/usr/javadirectory.Navigate to the
/usr/javadirectory and extract the jdk.tar.gz file.cd /usr/java && tar zxvf jdk-7u67-linux-x64.tar.gz or cd /usr/java tar zxvf jdk-8u51-linux-x64.tar.gzThe JDK files will be extracted into a
/usr/java/jdk1.7.0_67directory or a/usr/java/jdk1.8.0_51directory.Create a symbolic link (symlink) to the JDK:
ln -s /usr/java/jdk1.7.0_67 /usr/java/defaultor
ln -s /usr/java/jdk1.8.0_51 /usr/java/defaultSet the JAVA_HOME and PATH environment variables.
export JAVA_HOME=/usr/java/default export PATH=$JAVA_HOME/bin:$PATH
Verify that Java is installed in your environment by running the following command:
java -versionYou should see output similar to the following:
java version "1.7.0_67" Java(TM) SE Runtime Environment (build 1.7.0_67-b01) Java HotSpot(TM) 64-Bit Server VM (build 24.67-b01, mixed mode)
OpenJDK 1.7
OpenJDK7 on HDP 2.3 does not work if you are using SLES as your OS. Use the following instructions to manually install OpenJDK 1.7 on a Linux OS other than SLES:
Check the version. From a terminal window, type:
java -version(Optional) Uninstall the Java package if the JDK version is less than 7. For example, if you are using Centos:
rpm -qa | grep javayum remove {java-1.*}(Optional) Verify that the default Java package is uninstalled.
which java(Optional) Download OpenJDK 1.7 RPMs. From the command-line, run:
RedHat/CentOS/Oracle Linux:
yum install java-1.7.0-openjdk java-1.7.0-openjdk-devel(Optional) Create symbolic links (symlinks) to the JDK.
mkdir /usr/javaln -s /usr/hdp/current/jvm/java-1.7.0-openjdk-1.7.0.51.x86_64 /usr/java/defaultln -s /usr/java/default/bin/java /usr/bin/java(Optional) Set up your environment to define JAVA_HOME to put the Java Virtual Machine and the Java compiler on your path.
export JAVA_HOME=/usr/java/default export PATH=$JAVA_HOME/bin:$PATH
(Optional) Verify if Java is installed in your environment. Execute the following from the command-line console:
java -versionYou should see output similar to the following:
openjdk version "1.7.0" OpenJDK Runtime Environment (build 1.7.0) OpenJDK Client VM (build 20.6-b01, mixed mode)
Installing the JCE
Before enabling Kerberos in the cluster, you must deploy the Java Cryptography Extension (JCE) security policy files on all hosts in the cluster.
| Important |
|---|---|
If you are using Oracle JDK, you must distribute and install the JCE on all hosts. If you are using OpenJDK, some distributions of the OpenJDK come with unlimited strength JCE automatically and therefore, installation of JCE is not required. |
Obtain the JCE policy file appropriate for the JDK version in your cluster.
Save the policy file archive in a temporary location.
On each host in the cluster, add the unlimited security policy JCE jars to
$JAVA_HOME/jre/lib/security/.For example, run the following to extract the policy jars into the JDK installed on your host:
unzip -o -j -q jce_policy-8.zip -d /usr/jdk64/jdk1.8.0_60/jre/lib/security/
Metastore Database Requirements
If you are installing Hive and HCatalog or installing Oozie, you must install a database to store metadata information in the metastore. You can either use an existing database instance or install a new instance manually. HDP supports the following databases for the metastore:
Postgres 8.x, 9.3+
MySQL 5.6
Oracle 11g r2
SQL Server 2008 R2+
The following sections describe how to install and configure the Metastore database.
Metastore Database Prerequisites
The database administrator must create the following users and specify the following values:
For Hive: hive_dbname, hive_dbuser, and hive_dbpasswd.
For Oozie: oozie_dbname, oozie_dbuser, and oozie_dbpasswd.
![[Note]](../common/images/admon/note.png)
Note By default, Hive uses the Derby database for the metastore. However, Derby is not supported for production systems.
Installing and Configuring PostgreSQL
The following instructions explain how to install PostgreSQL as the metastore database. See your third-party documentation for instructions on how to install other supported databases.
RHEL/CentOS/Oracle Linux
To install a new instance of PostgreSQL:
Connect to the host machine where you plan to deploy PostgreSQL instance.
At a terminal window, enter:
yum install postgresql-serverStart the instance.
/etc/init.d/postgresql startNote For some newer versions of PostgreSQL, you might need to execute the command:
/etc/init.d/postgresql initdbReconfigure PostgreSQL server:
Edit the
/var/lib/pgsql/data/postgresql.conffile.Change the value of
#listen_addresses = 'localhost'tolisten_addresses = '*'Edit the
/var/lib/pgsql/data/postgresql.conffile.Uncomment the "port = " line and specify the port number (default is 5432)
Edit the
/var/lib/pgsql/data/pg_hba.conffileAdd the following:
host all all 0.0.0.0/0 trustOptional: If you are using PostgreSQL v9.1 or later, add the following to the
/var/lib/pgsql/data/postgresql.conffile:standard_conforming_strings = off
Create users for PostgreSQL server.
Log in as the root user and enter:
echo "CREATE DATABASE $dbname;" | sudo -u $postgres psql -U postgres echo "CREATE USER $user WITH PASSWORD '$passwd';" | sudo -u $postgres psql -U postgres echo "GRANT ALL PRIVILEGES ON DATABASE $dbname TO $user;" | sudo -u $postgres psql -U postgres
Where:
$postgres is the postgres user
$user is the user you want to create
$dbname is the name of your PostgreSQL database
Note For access to the Hive metastore, create hive_dbuser after Hive has been installed, and for access to the Oozie metastore, create oozie_dbuser after Oozie has been installed.
On the Hive Metastore host, install the connector:
yum install postgresql-jdbc*Confirm that the .jar is in the Java share directory.
ls -l /usr/share/java/postgresql-jdbc.jar
SUSE Linux Enterprise Server (SLES)
To install a new instance of PostgreSQL:
Connect to the host machine where you plan to deploy the PostgreSQL instance.
At a terminal window, enter:
zypper install postgresql-serverStart the instance.
/etc/init.d/postgresql startNote For some newer versions of PostgreSQL, you might need to execute the command:
/etc/init.d/postgresql initdbReconfigure the PostgreSQL server:
Edit the
/var/lib/pgsql/data/postgresql.conffile.Change the value of
#listen_addresses = 'localhost'tolisten_addresses = '*'Edit the
/var/lib/pgsql/data/postgresql.conffile.Change the port setting
#port = 5432toport = 5432Edit the
/var/lib/pgsql/data/pg_hba.conffile.Add the following:
host all all 0.0.0.0/0 trustOptional: If you are using PostgreSQL v9.1 or later, add the following to the
/var/lib/pgsql/data/postgresql.conffile:standard_conforming_strings = off
Create users for PostgreSQL server.
Log in as the root and enter:
echo "CREATE DATABASE $dbname;" | sudo -u $postgres psql -U postgres echo "CREATE USER $user WITH PASSWORD '$passwd';" | sudo -u $postgres psql -U postgres echo "GRANT ALL PRIVILEGES ON DATABASE $dbname TO $user;" | sudo -u $postgres psql -U postgres
Where:
$postgres is the postgres user
$user is the user you want to create
$dbname is the name of your PostgresSQL database
Note For access to the Hive metastore, create hive_dbuser after Hive has been installed, and for access to the Oozie metastore, create oozie_dbuser after Oozie has been installed.
On the Hive Metastore host, install the connector.
zypper install -y postgresql-jdbcCopy the connector .jar file to the Java share directory.
cp /usr/share/pgsql/postgresql-*.jdbc3.jar /usr/share/java/postgresql-jdbc.jarConfirm that the .jar is in the Java share directory.
ls /usr/share/java/postgresql-jdbc.jarChange the access mode of the .jar file to 644.
chmod 644 /usr/share/java/postgresql-jdbc.jar
Installing and Configuring MySQL
This section describes how to install MySQL as the metastore database. For instructions on how to install other supported databases, see your third-party documentation.
| Important |
|---|---|
When you use MySQL as your Hive metastore, you must use
|
RHEL/CentOS
To install a new instance of MySQL:
Connect to the host machine you plan to use for Hive and HCatalog.
Install MySQL server.
From a terminal window, enter:
yum install mysql-server(for CentOS6)yum install mysql-community-releaseFor CentOS7, install MySQL server from the HDP-Utils repository.Start the instance.
/etc/init.d/mysqld startSet the root user password using the following command format:
mysqladmin -u root password $mysqlpasswordFor example, to set the password to "root":
mysqladmin -u root password rootRemove unnecessary information from log and STDOUT.
mysqladmin -u root 2>&1 >/dev/nullLog in to MySQL as the root user:
mysql -u root -prootwhere "root" is the root user password.
Log in as the root user and create the “dbuser” and grant it adequate privileges.
This user provides access to the Hive metastore. Use the following series of commands (shown here with the returned responses) to create dbuser with password dbuser.
[root@c6402 /]# mysql -u root -proot Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 11 Server version: 5.1.73 Source distribution Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> CREATE USER 'dbuser'@'localhost' IDENTIFIED BY 'dbuser'; Query OK, 0 rows affected (0.00 sec) mysql> GRANT ALL PRIVILEGES ON *.* TO 'dbuser'@'localhost'; Query OK, 0 rows affected (0.00 sec) mysql> CREATE USER 'dbuser'@'%' IDENTIFIED BY 'dbuser'; Query OK, 0 rows affected (0.00 sec) mysql> GRANT ALL PRIVILEGES ON *.* TO 'dbuser'@'%'; Query OK, 0 rows affected (0.00 sec) mysql> FLUSH PRIVILEGES; Query OK, 0 rows affected (0.00 sec) mysql> GRANT ALL PRIVILEGES ON *.* TO 'dbuser'@'localhost' WITH GRANT OPTION; Query OK, 0 rows affected (0.00 sec) mysql> GRANT ALL PRIVILEGES ON *.* TO 'dbuser'@'%' WITH GRANT OPTION; Query OK, 0 rows affected (0.00 sec) mysql>
Use the exit command to exit MySQL.
You should now be able to reconnect to the database as "dbuser" using the following command:
mysql -u dbuser -pdbuserAfter testing the dbuser login, use the exit command to exit MySQL.
Install the MySQL connector JAR file.
yum install mysql-connector-java*
SUSE Linux Enterprise Server (SLES)
To install a new instance of MySQL:
Connect to the host machine you plan to use for Hive and HCatalog.
Install MySQL server.
From a terminal window, enter:
zypper install mysql-serverStart the instance.
/etc/init.d/mysqld startSet the root user password using the following command format:
mysqladmin -u root password $mysqlpasswordFor example, to set the password to "root":
mysqladmin -u root password rootRemove unnecessary information from log and STDOUT.
mysqladmin -u root 2>&1 >/dev/nullLog in to MySQL as the root user:
mysql -u root -prootLog in as the root user, create dbuser, and grant it adequate privileges.
This user provides access to the Hive metastore. Use the following series of commands (shown here with the returned responses) to create dbuser with password dbuser.
[root@c6402 /]# mysql -u root -proot Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 11 Server version: 5.1.73 Source distribution Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> CREATE USER 'dbuser'@'localhost' IDENTIFIED BY 'dbuser'; Query OK, 0 rows affected (0.00 sec) mysql> GRANT ALL PRIVILEGES ON *.* TO 'dbuser'@'localhost'; Query OK, 0 rows affected (0.00 sec) mysql> CREATE USER 'dbuser'@'%' IDENTIFIED BY 'dbuser'; Query OK, 0 rows affected (0.00 sec) mysql> GRANT ALL PRIVILEGES ON *.* TO 'dbuser'@'%'; Query OK, 0 rows affected (0.00 sec) mysql> FLUSH PRIVILEGES; Query OK, 0 rows affected (0.00 sec) mysql> GRANT ALL PRIVILEGES ON *.* TO 'dbuser'@'localhost' WITH GRANT OPTION; Query OK, 0 rows affected (0.00 sec) mysql> GRANT ALL PRIVILEGES ON *.* TO 'dbuser'@'%' WITH GRANT OPTION; Query OK, 0 rows affected (0.00 sec) mysql>
Use the exit command to exit MySQL.
You should now be able to reconnect to the database as dbuser, using the following command:
mysql -u dbuser -pdbuserAfter testing the dbuser login, use the exit command to exit MySQL.
Install the MySQL connector JAR file.
zypper install mysql-connector-java*
Configuring Oracle as the Metastore Database
You can select Oracle as the metastore database. For instructions on how to install the databases, see your third-party documentation. To configure Oracle as the Hive Metastore, install HDP and Hive, then follow the instructions in "Set up Oracle DB for use with Hive Metastore" in this guide.