### Start OpenVPN Service

Source: https://wiki.buyvm.net/doku.php/vpn%3Aopenvpn

Starts the OpenVPN service on the server.

```bash
/etc/init.d/openvpn start
```

--------------------------------

### Configure Server Certificate Paths

Source: https://wiki.buyvm.net/doku.php/vpn%3Aopenvpn

Example lines in server.conf pointing to the generated CA, certificate, key, and DH files.

```ini
ca /etc/openvpn/ca/keys/ca.crt
cert /etc/openvpn/ca/keys/server.crt
key /etc/openvpn/ca/keys/server.key  # This file should be kept secret
dh /etc/openvpn/ca/keys/dh1024.pem
```

--------------------------------

### Anycast IP Configuration Example

Source: https://wiki.buyvm.net/doku.php/stallion?rev=1619388357

Sample /etc/network/interfaces configuration for a system using Anycast IP addresses, demonstrating the setup for both IPv4 and IPv6, as well as the Anycast binding.

```bash
auto lo 
    iface lo inet loopback
    
    auto eth0
    allow-hotplug eth0
    iface eth0 inet static
    address         209.141.56.135                                                                                                     
    network         209.141.56.0                                                                                                       
    gateway         209.141.56.1                                                                                                       
    broadcast       209.141.56.255                                                                                                     
    netmask         255.255.255.0                                                                                                      
 
                                                                                                                                          
    auto eth0:v6
    allow-hotplug eth0:v6
    iface eth0:v6 inet6 static
    address         2605:6400:0020:0078::1
    gateway         2605:6400:0020::1
    netmask         48
    
    
    auto eth0:anycast
    allow-hotplug eth0:anycast
    iface eth0:anycast inet static
    address         198.251.86.22
    netmask         255.255.255.0
    
    
   
```

--------------------------------

### fdisk command example (New partition creation)

Source: https://wiki.buyvm.net/doku.php/slab?difftype=sidebyside&do=diff&rev=1619297441

Example of using fdisk to create a new partition.

```bash
Command (m for help): n
```

--------------------------------

### Linux fdisk command example

Source: https://wiki.buyvm.net/doku.php/slab?difftype=sidebyside&do=diff&rev2%5B0%5D=1619306176&rev2%5B1%5D=1619363416

This snippet shows the sequence of commands to set up a new partition on a Linux system using fdisk.

```bash
$ sudo fdisk /dev/sda
Welcome to fdisk (util-linux 2.33.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Command (m for help): g
Created a new GPT disklabel (GUID: ECA757E9-5304-594C-A9CA-17E061B2E516).
The old dos signature will be removed by a write command.

Command (m for help): n
Partition number (1-128, default 1): 1
First sector (2048-536870878, default 2048): 2048
Last sector, +/-sectors or +/ -size{K,M,G,T,P} (2048-536870878, default 536870878): 536870878 # Set this to your own default by pressing enter.
Created a new partition 1 of type 'Linux filesystem' and of size 256 GiB.

Command (m for help): w
```

--------------------------------

### Install OpenVPN on CentOS

Source: https://wiki.buyvm.net/doku.php/vpn%3Aopenvpn

Installs the OpenVPN package on CentOS, including EPEL repository setup.

```bash
rpm -Uvh http://dl.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm
yum update
yum install openvpn
```