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This article mainly introduces "the installation steps of ambari". In the daily operation, I believe many people have doubts about the installation steps of ambari. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts of "installation steps of ambari". Next, please follow the editor to study!

System requirements:

CentOS 7

Python 2.7.x

JDK1.8+

Installation environment preparation

HDP version compatibility

Https://supportmatrix.hortonworks.com/

Operation and maintenance knowledge base > ambari installation > image2018-9-29011-7-33.png

Because it is strictly dependent on the version, you need to determine which version is installed first.

System initialization

Modify hostname

Sudo hostnamectl set-hostname test-bg-xx

Sudo hostname test-bg-xx

Modify time zone and character set

# modify time zone:

Cp / usr/share/zoneinfo/Asia/Shanghai / etc/localtime

Synchronize cluster time

Yum install-y ntp

Ntpdate-u cn.pool.ntp.org

Or:

Ntpdate time1.aliyun.com

Hardware time and system time synchronization:

Clock-w

Configure automatic synchronization: / etc/crontab write

/ 1 * root ntpdate-u cn.pool.ntp.org > > / dev/null 2 > & 1

Turn off the firewall and selinux

# turn off the firewall

Systemctl stop firewalld

Systemctl disable firewalld

# turn off selinux

Modify configuration

Sed-I's setting SELINUXFORCING'/ etc/sysconfig/selinux

Temporarily Closed

Setenforce 0

Configure keyless login

In order for the Ambari server to automatically install the Ambari agent on all cluster hosts, you must set up a password-free SSH connection between the Ambari server host and all other hosts in the cluster. Ambari server hosts use SSH public key authentication to remotely access and install Ambari agents

Ssh-keygen-t rsa

Ssh-copy-id-I / .ssh/id_rsa.pub root@node1

Ssh-copy-id-I / .ssh/id_rsa.pub root@node2

Ssh-copy-id-I / .ssh/id_rsa.pub root@node3

Note: you can choose to install the Ambari agent manually on each cluster host. In this case, you do not need to generate and distribute SSH keys

A non-root SSH account can be used if the account can perform sudo without entering a password

#

# if the ssh port is not the default, you can create a config file under .ssh as follows

[jt_ops@test-bg-m01 .ssh] $cat config

Host test-bg-m01

HostName test-bg-m01

User jt_ops

Port 1876

Host test-bg-w01

HostName test-bg-w01

User jt_ops

Port 1876

System initialization parameters

Cat > > / etc/sysctl.conf > / etc/security/limits.conf / etc/security/limits.d/20-nproc.conf

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