2023-08

1.Apache2 installation and virtual host configuration1.1 Apache2①httpd install# dnf -y install httpd1.3 Virtual Host SettingsAssign and configure the domain name [oracle.korodes.com] to the document root [/var/www/html/oracle.korodes.com] directory for virtual host operation# vi /etc/httpd/conf.d/vhost.conf2. Confirmation of CGI Script Usage①Confirmation of CGI availability3. PHP installation and configuration1.PHP install①Install

1.FTP Server1.1vsftpd Install# dnf -y install vsftpd1.2vsftpd configurationSave the unedited vsftpd.conf with .bak# cp /etc/vsftpd/vsftpd.conf /home/huong/vsftpd.conf.bak2. vsftpd SSL/TLSConfigure Vsftpd to use SSL/TLS2.1 Create self-signed certificatesThis work is not required if you are using a trusted, legitimate certificate such as Let's Encryp3. File server installation with SambaBuild a file server with access rights that requires user authentication with Samba.Installation Procedure①Create shared folders with access rights that require user authentication②Accessible group creation③Creation of users belonging to accessible groups④Configuration File Edit

SSH connection with authentication using public key Creation of public and private key pairsCreate a public/private key pair for a user connecting to the Linux server using OpenSSH.Use ssh-keygen to create key pairs.Creation of public/private key pairs is performed with remote login user privileges.If you do not specify the destination and file name, id_ed25519 and id_ed25519.pub will be created in /home/(user name)/.ssh/. On the way, enter the password for the key.

1.Setting up a remote connection via SSHSSH is a service for connecting remotely to a server and is basically running immediately after the OS is installed, but the default settings are somewhat insecure.Here we will configure the default settings to increase the security of SSH connections.2.Firewall (Firewalld) settingsIn Oracle, the firewall is firewalld configured by default and enabled during OS installation.To briefly explain "firewalld," when setting communication control policies, communication permission/blocking rules are applied to predefined zones, and these zones are then assigned to each NIC (network adapter).

1.Install bash completion extension package# dnf -y install bash-completion# reboot2.Disabling SELinuxFirst, disable selinux.　selinux is a feature that improves auditing and security in Linux, but when enabled, it can limit the behavior of services and the contents of the configuration considerably.Therefore, it is basically a case of invalidation in many cases.SELinux operating modesEnforcing : SELinux functionality is enabled and access control is enabledPermissive : SElinux will warn, but no access restrictions will be placeddisabled : Both SElinux function and access control are disabled

OracleLinux9.2Oracle Linux provides a 100% application binary compatible alternative to Red Hat Enterprise Linux and CentOS Linux for both hybrid and multi-cloud environments.Since 2006, Oracle Linux has been completely free to download and use. Source code, binaries and updates are provided free of charge. It is freely redistributable. Free for use in production environments.今回は、最新のOracle Linux9.2(2023年5月リリース)で進めていきます。This time, we will proceed with the latest Oracle Linux 9.1.(May 2023 Release)１．Oracle Linux9.2 DownloadOracle Linux 9.2 installation image (OracleLinux-R9-U2-x86_64-dvd.iso ) can be downloaded from the following sitehttps://www.oracle.com/linux/

1.Website data backup1-1. Backup under /var/www/html①Creating backup script files# cd /var/www/system# vi backup_html.sh2.MySQL database backup①Creating backup script files# cd /var/www/system3.Restore backup files under html① Store HTML backup files in "/ (root)" directory4.Restoring Mysql Backup Files①Save the backup file to any directory（In the example, the directory is "/var/www/backup/db_bak".）Unzip data

1. Logwatch①Install# dnf install logwatch②Editing Configuration Files2.Automatic DNS update scriptWhenever the global IP changes, which happens when the network is disconnected or the router is disconnected and rebooted, we need to access Dynamic DNS to inform the user that the global IP has changed. We will install a script that will do this automatically.This time, we assume that you will use Value Domain as your DNS service.3.Disk Usage Check Script3.1 script# cd /var/www/system# vi disk_capacity_check.sh

Mysql8 Install＃ dnf -y install mysql-serverCreate a new charset.cnf with the following contentsWordPress Install1. Create database for Word PressAs an example, assume database [wp_db] database user [wp_user] password [?W123456]

1.Setting up a remote connection via SSHSSH is a service for connecting remotely to a server and is basically running immediately after the OS is installed, but the default settings are somewhat insecure.Here we will configure the default settings to increase the security of SSH connections.2.Firewall (Firewalld) settingsIn Oracle, the firewall is firewalld configured by default and enabled during OS installation.To briefly explain "firewalld," when setting communication control policies, communication permission/blocking rules are applied to predefined zones, and these zones are then assigned to each NIC (network adapter).

Mysql8 Install＃ dnf -y install mysql-serverCreate a new charset.cnf with the following contentsWordPress Install1. Create database for Word PressAs an example, assume database [wp_db] database user [wp_user] password [?W123456]