Aman Juman amanjuman

Set Server Hostname

hostnamectl set-hostname fqdn.domain.tld

Install Required Packages

sudo apt install postfix libsasl2-modules mailutils -y

Set Server Hostname

hostnamectl set-hostname fqdn.domain.tld

Install Docker

curl -fsSL https://get.docker.com -o get-docker.sh && sudo sh get-docker.sh
curl -SL https://github.com/docker/compose/releases/download/v2.24.1/docker-compose-linux-x86_64 -o /usr/local/bin/docker-compose && sudo chmod +x /usr/local/bin/docker-compose
sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

Install Packages

sudo apt install netplan.io openvswitch-switch

Configure Netplan

nano /etc/netplan/network.yaml

network:

Enable System IP forwarding first

echo 'net.ipv4.ip_forward = 1' | sudo tee -a /etc/sysctl.conf
echo 'net.ipv6.conf.all.forwarding = 1' | sudo tee -a /etc/sysctl.conf
sudo sysctl -p /etc/sysctl.conf

Here is sample network configuration (remove comments "##") Replace your interface name, public IP, internal NAT IP

Install the dependencies:

apt update && apt install sudo wget gnupg gnupg2 dphys-swapfile -y

Verify the PGP Key

wget -O- https://repo.3cx.com/key.pub | gpg --dearmor | sudo tee /usr/share/keyrings/3cx-archive-keyring.gpg >> /dev/null

	[Resolve]
	DNS=1.1.1.1#cloudflare-dns.com 1.0.0.1#cloudflare-dns.com 2606:4700:4700::1111#cloudflare-dns.com 2606:4700:4700::1001#cloudflare-dns.com 9.9.9.9#dns.quad9.net
	DNSOverTLS=yes
	FallbackDNS=149.112.112.112#dns.quad9.net 8.8.8.8#dns.google
	LLMNR=no
	MulticastDNS=no
	DNSSEC=yes
	Cache=yes
	DNSStubListener=yes

	Prefix/L: fd
	Global ID: ef2626
	Subnet ID: 100
	Combined/CID: fdfc:ef2626:100::/64
	IPv6 addresses: fdfc:ef2626:100:xxxx:xxxx:xxxx:xxxx

	Download Office Deployment Tool (ODT)
	https://officecdn.microsoft.com/pr/wsus/setup.exe
	Generate Configuration from Here
	https://config.office.com/deploymentsettings
	Or create a file named "Configuration.xml"

	<Configuration ID="715bbef8-1f6a-4e50-b9dd-bd8f2185885d">
	<Add OfficeClientEdition="64" Channel="Current">
	<Product ID="O365ProPlusRetail">
	<Language ID="en-us" />

	sudo useradd -rs /bin/false prometheus
	sudo mkdir /etc/prometheus /var/lib/prometheus
	cd /tmp && wget https://github.com/prometheus/prometheus/releases/download/v2.51.0/prometheus-2.51.0.linux-amd64.tar.gz
	tar -xvf prometheus-.-amd64.tar.gz && cd prometheus-.-amd64
	sudo mv console* /etc/prometheus
	sudo mv prometheus.yml /etc/prometheus
	sudo mv prometheus promtool /usr/local/bin/
	sudo chown prometheus:prometheus /usr/local/bin/prometheus /etc/prometheus /var/lib/prometheus

	sudo nano /etc/systemd/system/prometheus.service

	general:
	# This can be changed to allow messages to be sent from multiple IP addresses
	use_ip_pools: true

	web:
	# The host that the management interface will be available on
	host: fqdn.domain.tld
	# The protocol that requests to the management interface should happen on
	protocol: https