Meeting Minimum System Requirements
To run 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 2.5.0 consumes about 6.5 GB of disk space. For more information about HDP hardware recommendations, see the HDP Cluster Planning Guide.
Operating System Requirements
Refer to the HDP 2.5.0 Release Notes for information on supported operating systems.
Software Requirements
You must install the following software on each of your hosts:
apt-get(for Ubuntu and Debian)chkconfig(Ubuntu and Debian)curlphp_curl(for SLES)reposync(might not be installed by default on all SLES hosts)rpm(for RHEL, CentOS, or SLES)scptarunzipwgetyum(for RHEL or CentOS)zypper(for SLES)
In addition, if you are creating local mirror repositories as part of the installation process and you are using RHEL, CentOS, or SLES), then on the mirror repo server you need the following utilities:
createreporeposyncyum-utils
See Deploying HDP in Production Data Centers with Firewalls.
JDK Requirements
Your system must have the correct Java Development Kit (JDK) installed on all cluster nodes. Refer to the HDP 2.5.0 Release Notes for information on supported JDKs.
![[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.
Manually Installing Oracle JDK
Use the following instructions to manually install Oracle JDK:
If you do not have a
/usr/javadirectory, create one:mkdir /usr/javaDownload the Oracle 64-bit JDK (
jdk-7u67-linux-x64.tar.gzorjdk-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 thejdk.tar.gzfile: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 are 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_HOMEandPATHenvironment variables:export JAVA_HOME=/usr/java/default export PATH=$JAVA_HOME/bin:$PATH
Verify that Java is installed in your environment:
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)
Manually Installing OpenJDK 7
OpenJDK7 on HDP 2.5.0 does not work if you are using SLES as your OS. Use the following instructions to manually install OpenJDK 7 on a Linux OS other than SLES:
Check your currently installed version from a terminal window:
java -versionIf the JDK version is earlier than 7, uninstall it, as in the following example using CentOS:
rpm -qa | grep javayum remove {java-1.*}If you followed Step 2, verify that Java is uninstalled:
which java(Optional) Download OpenJDK 7 RPMs from the appropriate command line:
RedHat, CentOS, or Oracle Linux:
yum install java-1.7.0-openjdk java-1.7.0-openjdk-develUbuntu or Debian:
apt-get install openjdk-7-jdk(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 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 that Java is installed in your environment by running the following command 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)
Manually Installing the JCE
Unless you are using OpenJDK with unlimited-strength JCE, you must manually install the Java Cryptography Extension (JCE) security policy files on all hosts in the cluster:
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 command 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 Apache projects Hive and HCatalog, Oozie, Hue, or Ranger, 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.
Refer to the HDP 2.5.0 Release Notes for information on supported metastore databases.
Metastore Database Prerequisites
The database administrator must create the following users and specify the following values:
For Apache Hive: hive_dbname, hive_dbuser, and hive_dbpasswd.
For Apache 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.
For Hue: Hue user name and Hue user password
For Apache Ranger: RANGER_ADMIN_DB_NAME
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.
Installing PostgreSQL on RHEL, CentOS, and Oracle Linux
Use the following instructions to install a new instance of PostgreSQL:
Using a terminal window, connect to the host machine where you plan to deploy a PostgreSQL instance:
yum install postgresql-serverStart the instance:
/etc/init.d/postgresql startFor some newer versions of PostgreSQL, you might need to execute the command
/etc/init.d/postgresql initdb.Reconfigure 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.Remove comments from the "port = " line and specify the port number (default 5432).
Edit the
/var/lib/pgsql/data/pg_hba.conffile by addingthe following:
host all all 0.0.0.0/0 trustIf 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 by logging
in as the root user and entering the following syntax:
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
The previous syntax should have the following values:
$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, you must create hive_dbuser after Hive has been installed, and for access to the Oozie metastore, you must create oozie_dbuser after Oozie has been installed.
On the Hive metastore host, install the connector:
yum install postgresql-jdbc*Confirm that the
.jarfile is in the Java share directory:ls -l /usr/share/java/postgresql-jdbc.jar
Installing PostgreSQL on 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 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.
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 PostgreSQL on Ubuntu and Debian
To install a new instance of PostgreSQL:
Connect to the host machine where you plan to deploy PostgreSQL instance.
At a terminal window, enter:
apt-get install postgresql-serverStart the instance.
Note 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.conf file.
Change the value of
#listen_addresses = 'localhost'tolisten_addresses = '*'Edit the /var/lib/pgsql/data/postgresql.conf file.
Change the port setting from
#port = 5432toport = 5432Edit the /var/lib/pgsql/data/pg_hba.conf
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.conf file:
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, and $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.
apt-get install -y libpostgresql-jdbc-javaCopy the connector .jar file to the Java share directory.
cp /usr/share/java/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
|
Installing MySQL on RHEL and 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 CentOS 6.6)yum install mysql-community-releaseFor CentOS 7.x, 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, use the following command 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 -prootIn this syntax, "root" is the root user password.
Log in as the root user, create the “dbuser,” and grant dbuser adequate privileges:
[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" by using the following command:
mysql -u dbuser -pdbuserAfter testing the dbuser login, use the exit command to exit MySQL.
Install the MySQL connector
.jarfile: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 by using the following command format:
mysqladmin -u root password $mysqlpasswordFor example, to set the password to "root", use the following command:
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 dbuser adequate privileges:
[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 by using the following command:
mysql -u dbuser -pdbuserAfter testing the dbuser login, use the exit command to exit MySQL.
Install the MySQL connector
.jarfile:zypper install mysql-connector-java*
Ubuntu/Debian
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:
apt-get install mysql-serverStart the instance.
/etc/init.d/mysql 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 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.
apt-get 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, and then follow the instructions in "Set up Oracle DB for use with Hive Metastore" in this guide.