Infrastructure Specifications

Validate that target nodes satisfy the baseline resource thresholds before initiating provisioning:

Node Identifier	Hardware Profile	Network Endpoint	Primary Function
mgmt-controller	8 vCPU / 16 GiB RAM / 300 GB SSD	10.50.20.10	Ambari Server & Monitoring
compute-node-alpha	8 vCPU / 16 GiB RAM / 300 GB SSD	10.50.20.11	Cluster Agent
compute-node-beta	8 vCPU / 16 GiB RAM / 300 GB SSD	10.50.20.12	Cluster Agent

Host Preconfiguration

Establish zero-trust SSH authentication across the fleet and apply kernel parameters tuned for distributed workloads.

# Generate RSA keypair without passphrase
ssh-keygen -t rsa -N '' -f ~/.ssh/id_rsa -q

# Broadcast authorized keys to target machines
for host_addr in 10.50.20.10 10.50.20.11 10.50.20.12; do
    ssh-copy-id "$host_addr"
done

Assign distinct FQDNs and enforce static DNS resolution:

hostnamectl set-hostname mgmt-controller
hostnamectl set-hostname compute-node-alpha
hostnamectl set-hostname compute-node-beta

cat >> /etc/hosts << HOSTS
10.50.20.10 mgmt-controller
10.50.20.11 compute-node-alpha
10.50.20.12 compute-node-beta
HOSTS

Neutralize memory fragmentation risks and rsetrict swapping behavior:

echo 'never' > /sys/kernel/mm/transparent_hugepage/enabled
echo 'never' > /sys/kernel/mm/transparent_hugepage/defrag
echo 'vm.swappiness=10' >> /etc/sysctl.conf
sysctl -p

Database Foundation

Provision a dedicated relational store to persist orchestration metadata.

# Register community repository and install server package
rpm -Uvh http://repo.mysql.com/mysql57-community-release-el7.rpm
yum install -y mysql-community-server

# Patch systemd pre-execution script to permit unencrypted bootstrapping
sed -i 's/--initialize /--initialize-insecure /' /usr/bin/mysqld_pre_systemd

# Write optimized configuration profile
cat > /etc/my.cnf << CNF
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
bind-address=0.0.0.0
port=3306
character-set-server=utf8mb4
collation-server=utf8mb4_unicode_ci
max_connections=1200
innodb_buffer_pool_size=2G
innodb_log_file_size=256M
binlog_format=row
log_error=/var/log/mysqld.log
lower_case_table_names=1
skip-name-resolve

[client]
default-character-set=utf8mb4
socket=/var/lib/mysql/mysql.sock
CNF

systemctl enable mysqld && systemctl start mysqld

# Secure the administrative account
mysql -u root -e "ALTER USER 'root'@'localhost' IDENTIFIED BY 'ProdDb!Str0ng'; FLUSH PRIVILEGES;"

Instantiate the schema and allocate scoped credentials for the manager service:

mysql -u root -p'ProdDb!Str0ng' << DDL
CREATE DATABASE ambari_meta CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
GRANT ALL PRIVILEGES ON ambari_meta.* TO 'ops_ambari'@'%' IDENTIFIED BY 'OpsGr4nt!Pass';
FLUSH PRIVILEGES;
USE ambari_meta;
SOURCE /var/lib/ambari-server/resources/Ambari-DDL-MySQL-CREATE.sql;
DDL

Artifact Repository Provisioning

Deploy a lightweight HTTP service to distribute offline packages efficiently.

yum install -y httpd createrepo
rm -f /etc/httpd/conf.d/welcome.conf

# Tune server directives for high-throughput delivery
sed -i 's/^ServerTokens .*/ServerTokens Prod/' /etc/httpd/conf/httpd.conf
sed -i 's/^AllowOverride None/AllowOverride All/' /etc/httpd/conf/httpd.conf

systemctl enable httpd && systemctl start httpd

# Establish directory layout and unpack distribution bundles
mkdir -p /var/www/html/{ambari,hdp,hdp-utils}
tar xf ambari-2.7.6.0-22-centos7.tar.gz -C /var/www/html/ambari
tar xf HDP-3.3.1.0-001-centos7.tar.gz -C /var/www/html/hdp
tar xf HDP-UTILS-1.1.0.22-centos7.tar.gz -C /var/www/html/hdp-utils

chown -R apache:apache /var/www/html/
createrepo /var/www/html/hdp/

Management Server Bootstrapping

Register local repositories, deploy prerequisites, and initialize the central coordinator.

cat > /etc/yum.repos.d/ambari.repo << YUMCFG
[ambari]
name=Apache Ambari Repository
baseurl=http://10.50.20.10/ambari/2.7.6.0-22/
enabled=1
gpgcheck=0
YUMCFG

# Install JRE across every cluster member
rpm -ivh jdk-8u292-linux-x64.rpm --nodeps --force

# Map JDBC driver to system libraries
mkdir -p /usr/share/java
cp mysql-connector-java-5.1.49.jar /usr/share/java/mysql-connector-java.jar

# Deploy core orchestrator
yum install -y ambari-server

# Execute silent configuration routine
ambari-server setup --skip-database-verification --non-interactive

# Inject connection parameters programmatically
ambari-server setup-db \
  --database=mysql \
  --dbhost=10.50.20.10 \
  --dbport=3306 \
  --dbname=ambari_meta \
  --dbuser=ops_ambari \
  --dbpassword=OpsGr4nt!Pass \
  --non-interactive

ambari-server start

Cluster Onboarding & Interface Access

Invoke the browser-based console to map services across physical assets.

# Management endpoint becomes active upon successful daemon launch
Target: http://10.50.20.10:8080
Credentials: admin / admin

The provisioning wizard exposes available technology stacks. Select the HDP 3.3.1 lineage, categorize hosts by availability zone or rack, verify network reachability, and execute the automated topology ganeration workflow.