How to create vps on a dedicated server?

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Psychz - Sharad

Votes: 0Posted On: Apr 10, 2017 03:16:12

SolusVM Slave Setup

PREREQUISITES

A dedicated server with supported hardware virtualization.

To check whether your system supports hardware virtualization, run the following command:

grep -E '(vmx|svm)' /proc/cpuinfo

If the output shows “vmx” or “svm” the CPU supports virtualization. Here's a sample output for your better understanding.

Partitioning

To create a VPS you need to partition the disk with certain specifications at the time of Operating System installation. These specifications are mentioned below.

# Boot = 1 GB

# swap = 6 GB

# / = 100 GB

The rest of the space is left out for the creation of Volume Group (VG).

Operating System

Centos 7.x 64 bit operating system with Logical Volume Manager installed. The operating system should not contain any other control panel or a previous version of SolusVM. You can install the logical volume manager by the following command.

yum install lvm2

An empty logical Volume Group

The Logical Volume group created should have enough space as it is used later by SolusVM.

LOGICAL VOLUME CREATION

Once the OS is installed in the system with the required specifications, we create a logical volume which the SolusVM uses to create VPS afterwards. The following steps will guide you to create logical volume.

Selecting the physical volume

You need to choose the physical volume in which you want to create LVM. Be sure that the physical volume chosen should have enough memory as the VPS will be created in it. You can choose the physical volume by the following command.

pvcreate /dev/sdb1

Here we have chosen “sdb1” as the physical volume. But you can choose as per your specifications. You can check the status of physical volume by “pvscan” and “pvdisplay” commands.

Creating the Volume Groups

Once the physical volume is selected, we can create volume groups from these physical volumes. Volume groups are nothing but storage groups consisting of one or more physical volumes. You can create a volume group by the following command.

vgcreate -s 32M guestos /dev/sdb1

Here we have created a volume group named “guestos” with size 32 MB in directory “/dev/sdb1”.

(Note: The Volume Group name cannot be KVM as directory /dev/kvm/ is created during installation of SolusVM. You should also try to avoid “underscore")

You can see the status of the volume group by “vgdisplay” command.

Logical Volume Creation

We create an logical volume to check the proper working of VG setup.

lvcreate -L 400M -n lvol0 guestos

In the above command, we create a logical volume of size 400 MB only with name “lvol0” in volume group guestos just to check the proper functioning of volume group. Later, we remove the logical volume by “lvremove” command.

lvremove /dev/guestos/lvol0

SolusVM Installation

Run the following commands to install SolusVM on Centos7.

wget https://repo.solusvm.com/el/solusvm_rhel_7_kvm_hypervisor_install.sh

sh solusvm_rhel_7_kvm_hypervisor_install.sh

A sample screenshot is attached for your reference.

Now your SolusVM slave is created with an ID key and password. You can add this node to your SolusVM master using this ID.

Before adding the node created to the SolusVM master you need to disable the “firewalld” service and enable iptables instead.

Run the following commands to do so.

systemctl disable firewalld

systemctl stop firewalld

yum install iptables-services

systemctl start iptables

systemctl start ip6tables

systemctl enable iptables

systemctl enable ip6tables

NETWORK BRIDGE SETUP

The next step in the installation is to setup a dedicated network bridge. In the server that we are using the network interface is “eno1”. Although, it could be different for other servers.

To create a network bridge, the “bridge-utils” package should be installed on the server. Run the following command to check if the package is already installed.

rpm -q bridge-utils

In case the package is not installed, you can install it with the help of the following command.

Yum install bridge-utils

The network file of interface “en01” stored in /etc/sysconfig/network-scripts/ifcfg-eno1 will look similar to the file displayed below.

Copy the above file to keep as backup

cp /etc/sysconfig/network-scripts/ifcfg-eno1 /etc/sysconfig/network-scripts/backup-ifcfg-eno1

Now create an empty file “br0”

touch /etc/sysconfig/network-scripts/ifcfg-br0

Copy the following fields in the “br0” file and save the file.

NAME=br0

TYPE=Bridge

BOOTPROTO=static

IPADDR=45.34.41.202

PREFIX=29

ONBOOT=yes

Now we have to edit the “en01” file using text editor.

NAME=eth0

HWADDR=00:27:0E:09:0C:B2

IPV6INIT=yes

IPV6_AUTOCONF=yes

IPV4_FAILURE_FATAL=yes

IPV6_FAILURE_FATAL=no

IPV6_DEFROUTE=yes

UUID=7d444b36-6316-401f-9d6c-ddb918e31440

IPV6_PEERDNS=yes

IPV6_PEERROUTES=yes

DNS1=8.8.8.8

ONBOOT=yes

BRIDGE=br0

Save and close the file “eno1”. Now, restart the network with the help of following command.

/etc/init.d/network restart