Freaks City

Server Hardening and Initial Setup Before deploying any application, secure the underlying infrastructure. Configure cloud provider security groups to restrict inbound traffic strictly to required ports: SSH (22), HTTP (80), and HTTPS (443). Avoid exposing all ports via 0.0.0.0/0 in production—tighten rules to specific IPs or ranges where possi ...

Prerequisites Supported CentOS Versions Docker is compatible with the following CentOS releases: CentOS 7 (64-bit) CentOS 6.5 (64-bit) or later versions System Requirements Docker requires specific kernel versions depending on your CentOS version: CentOS 7: 64-bit system with kernel version 3.10 or higher CentOS 6.5 or later: 64-bit system w ...

System Preparation and Kernel Tuning Establish dedicated system accounts and directory structures before initiating the deployment. Use a privileged terminal session to execute the following group and user provisioning commands: groupadd dbadmin_grp groupadd dboper_grp useradd -g dbadmin_grp -G dboper_grp -m odbsvc passwd odbsvc id odbsvc Desi ...

MySQL is a widely used open-source relational database. Installation steps can vary between versions; this guide details the process for MySQL 5.7.28. Obtain MySQL 5.7.28 from the official archives. Download the 64-bit Linux version: wget https://downloads.mysql.com/archives/community/mysql-5.7.28-linux-glibc2.12-x86_64.tar.gz Remove exist ...

System Initialization & Security Module Alignment Before applying network policies, ensure underlying security modules align with you're operational requiremants. Disabling SELinux enforcement and halting the firewall daemon can be executed via the following sequence: # Immediately disable SELinux enforcing state setenforce 0 >/dev/null ...

Adjust VMware Virtual Network Settings Launch the Virtual Network Editor from the VMware interface. Administrative privileges may be required to modify these settings. Select the active virtual adapter (typically VMnet8 for NAT mode) and configure the following: Ensure Use local DHCP service remains unchecked to allow manual assignment. Record ...

After installing Apache Tomcat on a CentOS server, you can successfully access it via http://localhost:8080 from the local machine. However, attempts to reach the server from other devices on the same network fail, eventhough ICMP ping requests are answered. The root cause is typically the system firewall blocking incoming connections on port 8 ...

Package Acquisition ==================== Download the static binary archive for Docker CE 18.06.3 compatible with x86_64 systems: wget https://download.docker.com/linux/static/stable/x86_64/docker-18.06.3-ce.tgz Ensure the version aligns with Kubernetes compatibility requirements — versions prior to 18.06 may lack critical features or exhibi ...

Environment Setup JDK Installation yum install -y java-1.8.0 ZooKeeper Cluster Configuration Downloading ZooKeeper wget https://archive.apache.org/dist/zookeeper/zookeeper-3.7.0/apache-zookeeper-3.7.0-bin.tar.gz tar xf apache-zookeeper-3.7.0-bin.tar.gz Configurasion File Adjustments # Backup sample configuration # cp zoo_sample.cfg zoo.cfg c ...

Host System RequirementsTarget Operating System: CentOS 7.xMinimum Resources: 4GB RAMInstalling the Docker EngineFirst, update the system repositories and remove any obsolete Docker versions:sudo yum update -y sudo yum remove docker \ docker-client \ docker-client-latest \ docker-common \ ...