Elasticsearch Snapshot Backup on RHEL 9

Register filesystem repository

mkdir -p /var/backups/elasticsearch
chown elasticsearch:elasticsearch /var/backups/elasticsearch

elasticsearch.yml: path.repo: ["/var/backups/elasticsearch"]

curl -X PUT "https://localhost:9200/_snapshot/my_backup" \...

Elasticsearch Snapshot Backup on Ubuntu 24.04

Register filesystem repository

mkdir -p /var/backups/elasticsearch
chown elasticsearch:elasticsearch /var/backups/elasticsearch

elasticsearch.yml: path.repo: ["/var/backups/elasticsearch"]

curl -X PUT "https://localhost:9200/_snapshot/my_backup...

Enable TLS/SSL on Apache – AlmaLinux 9

Step 1 – Enable mod_ssl

dnf install -y mod_ssl && systemctl restart httpd

Step 2 – Generate self-signed certificate

openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/apache-selfsigned.key \
    -out /etc/ssl/certs/apache...

Enable TLS/SSL on Apache – Arch Linux

Step 1 – Enable mod_ssl

# Uncomment LoadModule ssl_module in httpd.conf
systemctl restart httpd

Step 2 – Generate self-signed certificate

openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/apache-selfsigned.key \
    -out...

Enable TLS/SSL on Apache – Debian 12

Step 1 – Enable mod_ssl

a2enmod ssl rewrite && systemctl restart apache2

Step 2 – Generate self-signed certificate

openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/apache-selfsigned.key \
    -out /etc/ssl/certs/apache-se...

Enable TLS/SSL on Apache – Gentoo Linux

Step 1 – Enable mod_ssl

# Add 'ssl' to APACHE2_OPTS in /etc/conf.d/apache2
rc-service apache2 restart

Step 2 – Generate self-signed certificate

openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/apache-selfsigned.key \...

Enable TLS/SSL on Apache – NetBSD 10

Step 1 – Enable mod_ssl

# SSL built-in
service apache restart

Step 2 – Generate self-signed certificate

openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/apache-selfsigned.key \
    -out /etc/ssl/certs/apache-selfsigned.cr...

Enable TLS/SSL on Apache – OpenBSD 7.5

Step 1 – Enable mod_ssl

# SSL built-in
rcctl restart apache2

Step 2 – Generate self-signed certificate

openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/apache-selfsigned.key \
    -out /etc/ssl/certs/apache-selfsigned.c...

Enable TLS/SSL on Apache – RHEL 9

Step 1 – Enable mod_ssl

dnf install -y mod_ssl && systemctl restart httpd

Step 2 – Generate self-signed certificate

openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/apache-selfsigned.key \
    -out /etc/ssl/certs/apache-self...

Enable TLS/SSL on Apache – Ubuntu 24.04

Step 1 – Enable mod_ssl

a2enmod ssl rewrite && systemctl restart apache2

Step 2 – Generate self-signed certificate

openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/apache-selfsigned.key \
    -out /etc/ssl/certs/apache...

Enable TLS/SSL on Nginx – AlmaLinux 9

Step 1 – Self-signed certificate (testing)

openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/nginx-selfsigned.key \
    -out /etc/ssl/certs/nginx-selfsigned.crt \
    -subj "/CN=example.com"
openssl dhparam -out /etc/ssl/cert...

Enable TLS/SSL on Nginx – Arch Linux

Step 1 – Self-signed certificate (testing)

openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/nginx-selfsigned.key \
    -out /etc/ssl/certs/nginx-selfsigned.crt \
    -subj "/CN=example.com"
openssl dhparam -out /etc/ssl/certs...

Enable TLS/SSL on Nginx – Debian 12

Step 1 – Self-signed certificate (testing)

openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/nginx-selfsigned.key \
    -out /etc/ssl/certs/nginx-selfsigned.crt \
    -subj "/CN=example.com"
openssl dhparam -out /etc/ssl/certs/...

Enable TLS/SSL on Nginx – Gentoo Linux

Step 1 – Self-signed certificate (testing)

openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/nginx-selfsigned.key \
    -out /etc/ssl/certs/nginx-selfsigned.crt \
    -subj "/CN=example.com"
openssl dhparam -out /etc/ssl/cer...

Enable TLS/SSL on Nginx – NetBSD 10

Step 1 – Self-signed certificate (testing)

openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/nginx-selfsigned.key \
    -out /etc/ssl/certs/nginx-selfsigned.crt \
    -subj "/CN=example.com"
openssl dhparam -out /etc/ssl/certs/...

Enable TLS/SSL on Nginx – OpenBSD 7.5

Step 1 – Self-signed certificate (testing)

openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/nginx-selfsigned.key \
    -out /etc/ssl/certs/nginx-selfsigned.crt \
    -subj "/CN=example.com"
openssl dhparam -out /etc/ssl/cert...

Enable TLS/SSL on Nginx – RHEL 9

Step 1 – Self-signed certificate (testing)

openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/nginx-selfsigned.key \
    -out /etc/ssl/certs/nginx-selfsigned.crt \
    -subj "/CN=example.com"
openssl dhparam -out /etc/ssl/certs/dhp...

Enable TLS/SSL on Nginx – Ubuntu 24.04

Step 1 – Self-signed certificate (testing)

openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/nginx-selfsigned.key \
    -out /etc/ssl/certs/nginx-selfsigned.crt \
    -subj "/CN=example.com"
openssl dhparam -out /etc/ssl/cer...

Get a list of all VMs

vim-cmd vmsvc/getallvms

Power on

vim-cmd vmsvc/power.on ID_NUMBER

Suspend

vim-cmd vmsvc/power.suspend ID_NUMBER

Resume

vim-cmd vmsvc/power.suspend_resume ID_NUMBER

Other vmsvc commands:

~ # vim-cmd vmsvc
Commands available under vmsvc/:
acquiremksticket...

Configure firewalld, UFW, iptables, nftables, PF (OpenBSD) and NPF (NetBSD) to secure your server.

This tutorial assumes you have magento installed

Install geoip module and database:

sudo apt-get install libgeoip1 libnginx-mod-http-geoip geoip-database-extra -y

Update GeoIP databases:

cd /usr/share/GeoIP
mv GeoIP.dat GeoIP.dat.bak 
curl -O https://dl.miyuru.lk/geoip/maxmind/country/maxmin...

This tutorial assumes you have magento and nginx installed

Install geoip module and database:

Update apt db

apt update

Then:

sudo apt-get install libgeoip1 libnginx-mod-http-geoip geoip-database -y

Update GeoIP databases:

cd /usr/share/GeoIP
mv GeoIP.dat GeoIP.dat.bak 
curl -O https://...

This tutorial assumes you have magento and nginx installed

Install geoip module and database:

Update apt db

apt update

Then:

sudo apt-get install libgeoip1 libnginx-mod-http-geoip geoip-database -y

Update GeoIP databases:

cd /usr/share/GeoIP
mv GeoIP.dat GeoIP.dat.bak 
curl -O https://...

Recently freebsd did drop (reason: eol) php7.4 support in FreeBSD and it is not available via packages or latest ports anymore. This guide will get back php7.4 from ports using help of git commit log. Last ports php7.4 related (update to php 7.4.33) commit was in git 27ac371f93d36f77f00b8da261e496...