ZFlow on SUSE Linux

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Target Platform: SUSE Linux Enterprise Server (SLES 15+)
Software Stack: JDK 17.0.13 + Apache Tomcat 9.0.96 + MySQL 8.0.40

Overview

Purpose

This guide provides step-by-step instructions for deploying Java WAR files on SUSE Linux Enterprise Server using: – JDK 17.0.13 (OpenJDK Temurin) – Apache Tomcat 9.0.96 – MySQL 8.0.40

Architecture

┌─────────────────┐        ┌─────────────────┐         ┌─────────────────┐

│   Client Web                      │        │   Apache                              │         │   MySQL                              │

│   Browser                           │◄► │   Tomcat 9.0                      │◄ ►│   8.0.40                               │

│                                               │         │   (JDK 17)                           │          │                                               │

└─────────────────┘         └─────────────────┘          └───────────────  ─┘

Supported Platforms

  • SUSE Linux Enterprise Server 15 SP6+
  • SUSE Linux Enterprise Server 15 SP7
  • openSUSE Leap 15.4+

Prerequisites

Hardware Requirements

Component Minimum Recommended
CPU 2 cores 4+ cores
RAM 4 GB 8+ GB
Storage 20 GB 50+ GB
Network 100 Mbps 1 Gbps

System Requirements

  • SUSE Linux Enterprise Server 15 or later
  • Root or sudo access
  • Active internet connection
  • Basic Linux command line knowledge

Network Ports

Port Service Description
8080 Tomcat HTTP Web application access
3306 MySQL Database access (internal)
22 SSH Remote administration

System Preparation

Update System

# Update package repository

sudo zypper refresh

 

# Update all packages

sudo zypper update -y

 

# Install essential tools

sudo zypper install -y curl wget unzip tar vim net-tools

Create Directory Structure

Create installation directories

sudo mkdir -p /opt/{jdk-17,tomcat,mysql-8.0.40}

sudo mkdir -p /var/lib/mysql-8.0.40

sudo mkdir -p /opt/backups

sudo mkdir -p /opt/scripts

System Information Verification

# Check OS version

cat /etc/os-release

Expected Output:

NAME=”SLES”

VERSION=”15-SP7″

ID=”sles”

 

# Check available resources

df -h

free -h

 

JDK 17 Installation

Download JDK 17

Navigate to the temporary directory

cd /tmp

 

Download OpenJDK 17 (Temurin)

wget https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.13%2B11/OpenJDK17U-jdk_x64_linux_hotspot_17.0.13_11.tar.gz

 

Verify download

ls -la OpenJDK17U-jdk_x64_linux_hotspot_17.0.13_11.tar.gz

Install JDK 17

# Extract to /opt

sudo tar -xzf OpenJDK17U-jdk_x64_linux_hotspot_17.0.13_11.tar.gz -C /opt/

 

Rename for easier access

sudo mv /opt/jdk-17.0.13+11 /opt/jdk-17

 

Set ownership

sudo chown -R root:root /opt/jdk-17

 

Set permissions

sudo chmod -R 755 /opt/jdk-17

Verify JDK Installation

Test Java installation

/opt/jdk-17/bin/java -version

/opt/jdk-17/bin/javac -version

Expected Output:

openjdk version “17.0.13” 2024-10-15

OpenJDK Runtime Environment Temurin-17.0.13+11 (build 17.0.13+11)

OpenJDK 64-Bit Server VM Temurin-17.0.13+11 (build 17.0.13+11, mixed mode, sharing)

 

 

 

 

 

MySQL 8.0.40 Installation

1) Repository RPM option

Download the MySQL Repository RPM

bash
wget https://dev.mysql.com/get/mysql80-community-release-sles15-1.noarch.rpm

Replace sles15 with your version (e.g., sles12) if needed.

Install the Repository Package

bash
sudo rpm -Uvh mysql80-community-release-sles15-1.noarch.rpm

Enable Desired MySQL Version (Optional)

To check available MySQL versions:

bash
sudo zypper info mysql*-community*

To enable a specific version (e.g., MySQL 8.0):

bash
sudo zypper modifyrepo --enable mysql80-community

Install MySQL Server

bash
sudo zypper refresh
sudo zypper install mysql-community-server

Start and Enable the MySQL Service

bash
sudo systemctl start mysql
sudo systemctl enable mysql

Secure the Installation

bash
sudo mysql_secure_installation

This will prompt you to set a root password and remove insecure defaults.

2) Manual Download Option

Download MySQL 8.0.40 binary

cd /tmp

wget https://dev.mysql.com/get/Downloads/MySQL-8.0/mysql-8.0.40-linux-glibc2.28-x86_64.tar.xz

 

Verify download

ls -la mysql-8.0.40-linux-glibc2.28-x86_64.tar.xz

Install MySQL 8.0.40

Extract MySQL

sudo tar -xJf mysql-8.0.40-linux-glibc2.28-x86_64.tar.xz -C /opt/

 

Rename directory

sudo mv /opt/mysql-8.0.40-linux-glibc2.28-x86_64 /opt/mysql-8.0.40

 

Create MySQL user

sudo useradd -r -s /bin/false mysql

 

Set ownership

sudo chown -R mysql:mysql /opt/mysql-8.0.40

sudo chown -R mysql:mysql /var/lib/mysql-8.0.40

Initialize MySQL Database

Initialize MySQL data directory

sudo /opt/mysql-8.0.40/bin/mysqld –initialize-insecure –user=mysql –basedir=/opt/mysql-8.0.40 –datadir=/var/lib/mysql-8.0.40

5.4 Create MySQL Configuration

# Create MySQL configuration file

sudo tee /etc/mysql-8.0.40.cnf << ‘EOF’

[mysqld]

basedir=/opt/mysql-8.0.40

datadir=/var/lib/mysql-8.0.40

socket=/var/lib/mysql-8.0.40/mysql.sock

port=3306

user=mysql

bind-address=127.0.0.1

server-id=1

 

Security and Performance

sql_mode=STRICT_TRANS_TABLES,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO

max_connections=200

innodb_buffer_pool_size=512M

query_cache_size=64M

 

Character Set

character-set-server=utf8mb4

collation-server=utf8mb4_unicode_ci

 

[mysql]

socket=/var/lib/mysql-8.0.40/mysql.sock

default-character-set=utf8mb4

 

[client]

socket=/var/lib/mysql-8.0.40/mysql.sock

default-character-set=utf8mb4

EOF

Create MySQL Service

Create systemd service for MySQL 8.0.40

sudo tee /etc/systemd/system/mysql-8.0.40.service << ‘EOF’

[Unit]

Description=MySQL 8.0.40 Database Server

After=network.target

 

[Service]

Type=notify

User=mysql

Group=mysql

ExecStart=/opt/mysql-8.0.40/bin/mysqld –defaults-file=/etc/mysql-8.0.40.cnf

TimeoutSec=600

Restart=on-failure

RestartSec=30

LimitNOFILE=65535

 

[Install]

WantedBy=multi-user.target

EOF

Start MySQL Service

Reload systemd and start MySQL

sudo systemctl daemon-reload

sudo systemctl start mysql-8.0.40

sudo systemctl enable mysql-8.0.40

 

Verify MySQL is running

sudo systemctl status mysql-8.0.40

Verify MySQL Installation

# Check MySQL version

/opt/mysql-8.0.40/bin/mysql –version

 

Test connection

/opt/mysql-8.0.40/bin/mysql –socket=/var/lib/mysql-8.0.40/mysql.sock -u root -e “SELECT VERSION();”

Expected Output:

/opt/mysql-8.0.40/bin/mysql  Ver 8.0.40 for Linux on x86_64 (MySQL Community Server – GPL)

 

 

 

Apache Tomcat 9.0 Installation

Download Tomcat 9.0.96

# Download Tomcat 9.0.96

cd /tmp

wget https://archive.apache.org/dist/tomcat/tomcat-9/v9.0.96/bin/apache-tomcat-9.0.96.tar.gz

 

# Verify download

ls -la apache-tomcat-9.0.96.tar.gz

Install Tomcat 9.0

# Extract Tomcat

sudo tar -xzf apache-tomcat-9.0.96.tar.gz -C /opt/

 

# Rename for consistency

sudo mv /opt/apache-tomcat-9.0.96 /opt/tomcat

 

# Create tomcat user and group 

sudo groupadd tomcat

sudo useradd -r -s /bin/false tomcat

 

 

# Set ownership to tomcat

sudo chown -R tomcat:tomcat /opt/tomcat

 

# Set execute permissions on scripts

sudo chmod +x /opt/tomcat/bin/*.sh

6.3 Create Tomcat Service

# Create systemd service for Tomcat

sudo tee /etc/systemd/system/tomcat.service << ‘EOF’

[Unit]

Description=Apache Tomcat 9.0 Web Server (JDK 17)

After=network.target mysql-8.0.40.service




[Service]

Type=forking

User=nobody

Group=nobody




# Environment Variables

Environment=JAVA_HOME=/opt/jdk-17

Environment=CATALINA_HOME=/opt/tomcat

Environment=CATALINA_BASE=/opt/tomcat

Environment=CATALINA_TMPDIR=/opt/tomcat/temp



# JVM Options

Environment="CATALINA_OPTS=-Xms512m -Xmx4g -XX:+UseG1GC -XX:MaxGCPauseMillis=200"


# Security options for JDK 17

Environment="JDK_JAVA_OPTIONS=--add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.util.concurrent=ALL-UNNAMED --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED"


# Service Control

ExecStart=/opt/tomcat/bin/startup.sh

ExecStop=/opt/tomcat/bin/shutdown.sh

SuccessExitStatus=143

Restart=on-failure

RestartSec=30




# Security

PrivateTmp=true

NoNewPrivileges=true




[Install]

WantedBy=multi-user.target

EOF

7. Environment Configuration

7.1 System Environment Variables

# Create environment configuration

sudo tee /etc/environment << ‘EOF’

JAVA_HOME=/opt/jdk-17

CATALINA_HOME=/opt/tomcat

CATALINA_BASE=/opt/tomcat

MYSQL_HOME=/opt/mysql-8.0.40

PATH=/opt/jdk-17/bin:/opt/mysql-8.0.40/bin:/opt/tomcat/bin:$PATH

EOF

 

# Apply environment variables

source /etc/environment

7.2 User Profile Configuration

# Add to .bashrc for easy access

echo ‘export JAVA_HOME=/opt/jdk-17’ >> ~/.bashrc

echo ‘export CATALINA_HOME=/opt/tomcat’ >> ~/.bashrc

echo ‘export MYSQL_HOME=/opt/mysql-8.0.40’ >> ~/.bashrc

echo ‘export PATH=/opt/jdk-17/bin:/opt/mysql-8.0.40/bin:/opt/tomcat/bin:$PATH’ >> ~/.bashrc

 

# Apply changes

source ~/.bashrc

8. Service Configuration

8.1 Start All Services

# Start services in correct order

sudo systemctl start mysql-8.0.40

sudo systemctl start tomcat

 

# Enable services for auto-start

sudo systemctl enable mysql-8.0.40

sudo systemctl enable tomcat

 

# Verify all services are running

sudo systemctl status mysql-8.0.40 tomcat

8.2 Firewall Configuration

# Configure firewall for web access

sudo firewall-cmd –permanent –add-port=8080/tcp

sudo firewall-cmd –permanent –add-port=8443/tcp

sudo firewall-cmd –reload

 

# Verify firewall rules

sudo firewall-cmd –list-ports

 

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