Difference between revisions of "SERVERware 3 Deployment Guide for Mirror Edition"

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== Introduction ==
 
== Introduction ==
  
SERVERware Mirror Edition introduces the secondary Storage/Controller in mirror configuration with the Primary server. This way, the complete setup becomes resilient to potential problems that can arise, ranging from defective disks to a complete server failure and shutdown. The following guide describes minimal and recommended hardware requirements as well as procedures for a successful deployment of SERVERware 3.2 - Mirror Edition.
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SERVERware Mirror Edition introduces the secondary Storage/Controller in mirror configuration with the Primary server. This way, the complete setup becomes resilient to potential problems that can arise, ranging from defective disks to a complete server failure and shutdown. The following guide describes minimal and recommended hardware requirements as well as procedures for a successful deployment of SERVERware 3 - Mirror Edition.
  
 
== Hardware Requirements ==
 
== Hardware Requirements ==

Revision as of 08:05, 18 January 2019

Introduction

SERVERware Mirror Edition introduces the secondary Storage/Controller in mirror configuration with the Primary server. This way, the complete setup becomes resilient to potential problems that can arise, ranging from defective disks to a complete server failure and shutdown. The following guide describes minimal and recommended hardware requirements as well as procedures for a successful deployment of SERVERware 3 - Mirror Edition.

Hardware Requirements

To successfully install and operate the Mirror Edition, there are number of hardware requirements that need to be fulfilled.

For Mirror edition, two Storage/Controller servers are needed and requirements per server are:

STORAGE/CONTROLLER SERVER
HARDWARE MINIMUM SYSTEM REQUIREMENTS RECOMMENDED SYSTEM REQUIREMENTS
CPU 2.0 GHz Quad-Core Intel Processor with 8MB Cache 2.4 GHz Quad-Core Intel Xeon Processor with 12MB Cache
RAM 16GB 32GB
Ethernet 8 x 1Gb/s network interfaces 2 x 1Gb/s + 2 x 10Gb/s network interfaces
Disk 1 x 64GB Solid-State Drive ( for system ), 1 x 500GB Solid-State Drive ( for storage ) 1 x 64GB Solid-State Drive ( for system ), 4 x 250GB Solid-State Drive ( for storage )

IMPORTANT NOTE: ZFS ARC is configured to use 50% of server's RAM memory. This means that VPSes have maximum of 50% of total RAM memory in the server at their disposal, and this needs to be taken into account when planning the operation of the system.

NOTE: The recommended setup could effectively work with one 10Gbps interface used for RAN, but that would limit potential upgrade to Cluster edition. In such case, the whole setup would have to be taken offline for hardware upgrade. Planning two 10Gbps is recommended. Also, two 1Gbps ports are bonded for faster communication over LAN network.


If added, table of minimum and recommended server requirements for Backup Hosts:

BACKUP SERVER
HARDWARE MINIMUM SYSTEM REQUIREMENTS RECOMMENDED SYSTEM REQUIREMENTS
CPU 2.0 GHz Quad-Core Intel Processor with 8MB Cache 2.4 GHz Quad-Core Intel Xeon Processor with 12MB Cache
RAM 16GB 32GB
Ethernet 1 x 1Gb/s network interface 2 or more x 1Gb/s network interfaces
Disk 1 x 1TB Hard Disk Drive ( for system and backup ) 1 x 64GB Solid-State Drive ( for system ), 6 x 1TB Hard Disk Drive ( for backup ) (RAID10)

NOTE: To add Processing Hosts, SERVERware 3 license must be upgraded to Cluster Edition and at least 2 Processing Hosts added to effectively relieve Storage/Controller.


IMPORTANT: Software RAID (including motherboard) implementations are not supported and could cause potential problems that Bicom Systems would not be able to support.

If physical access to the server is not possible, KVMoIP (Keyboard, Video, Mouse over IP) remote access to each server should provide:

  • Remote power management support (remote reset/power off/on)
  • Remote access to BIOS
  • Remote SSH console access
  • A public IP assigned to KVMoIP
  • If KVMoIP is behind firewall/NAT, the following ports must be opened: TCP (80, 443, 5100, 5900-5999)


SERVERware installation media is required in one of the following forms:

  • DVD image burned to a DVD and inserted into DVD drive
  • USB image burned to a 2GB USB drive and inserted into operational USB port
  • Most KVMoIP solutions offer the ability to boot and install systems from remote locations by providing an URL to the desired install image.


Also, additional securities in operating your servers should be observed:

Deployment Guide

SERVERware 3 Mirror Edition topology is shown on the following image:

Mirror Edition topology layout

Typical Mirror Edition SERVERware setup consists of two storage servers and optionally a backup server. It is highly recommended for storage servers to have identical number of disks with identical size. Although servers where this cannot be true can be made connected in a mirror, underlying disks management will pair up disks in such a way to maximize disk usage. Nevertheless, some disk space will be unusable.

Although both Storage servers have their own LAN IP address, additional Floating IP address is used if shell access to the current Primary server is needed.

IMPORTANT: It is highly recommended that servers used in mirror configuration are closely matched as different configurations, not to mention, using different manufacturers, are unlikely to work. Specifically, problems that may arise are network interface naming conventions that are different on various motherboards/network controllers.

Network setup

In Mirror Edition setup, there is a need for two networks:

  • LAN network which is used to transport SIP traffic and access to storage and optional backup server.
  • RAN network which is used exclusively between storage servers for replication purposes.

How-to instructions regarding redundant network setup are available on the following page:

Disk setup

Because of ZFS features, hardware RAID is not required. If there is a RAID controller present and you want to use it, working battery and write cache are a must. Any hardware RAID without battery backup and write cache enabled can't be supported. Fake RAID is not supported, should not be used and must be turned off if supported by motherboard (Fake RAID is essentially software RAID provided by the BIOS on the motherboard).

Lets say we have two disks for storage per server (it is highly recommended that disks should be identical).

Currently, setup wizard will form the following pool:


NETSTOR pool without hardware RAID


As you can see from the following image, the system will take either a disk or logical volume offered by RAID and form a ZFS mirror through RAN between the two storage servers:

NETSTOR pool with hardware RAID

Creation of USB installation media


USB images and instructions are available on the following how-to page:


Installation wizard steps

To install the SERVERware onto the designated server, system administrator must either connect a prepared USB stick, or use the KVM ability to remote boot installation image given as remote URL. Whether the administrator uses the USB installation image or remote boots image, first part of this procedure will be CLI based and the welcome screen:

sw3 deploy dl360 g7 1.png

If the live system was able to pickup IP address from DHCP server, it will show so on this screen. You can then access the system remotely via ssh on port 2020 with username 'root' and password 'bicomsystems' and continue installation. There are several options offered on the welcome screen:

  • Exit - Choose this option to exit installation wizard. This option will open live system command line shell.
  • Verify Media - This option will go trough the installation media files, match them against previous stored checksum and check for corruption.
  • Next - Proceed to the next step.
  • Network - Configure IP address for the remote access to the installation wizard.

Step 1:

Select the type of installation you want to install, Storage/Controller or Host (Backup).

sw3 deploy dl360 g7 2.png

Storage/Controller is the network storage for VPSs on the SERVERware network. In order to use mirrored setup, you will have to install two physical machines as Storage/Controller. Processing Host (available in Cluster Edition) is computation resource that will attach and execute VPSs from storage via SAN (Storage Area Network).

Step 2:

Installation wizard will proceed to check for available disks.

sw3 deploy dl360 g7 3.png

Step 3:

Select physical disk for system installation. Volume for storage will be automatically created from disks that are not selected in this step.

sw3 deploy dl360 g7 4.png

Step 4:

Confirmation dialog appears.

sw3 deploy dl360 g7 5.png

Step 5:

Installation wizard will now proceed with installation of SERVERware operating system.

sw3 deploy dl360 g7 6.png
sw3 deploy dl360 g7 7.png

Step 6:

After OS is installed, configure network dialog appears.

sw3 deploy dl360 g7 8.png

Click Next to continue and then chose one of the options to configure network interface.

sw3 deploy dl360 g7 13b.png

After finishing network configuration, click next to finish installation. Wizard will initiate reboot.

Step 7:



Redo installation steps for the second (mirrored) machine.


Setup wizard steps



Open your browser and enter LAN IP you configured upon installation. After confirming self signed certificate, SERVERware setup wizard login screen appears. Enter administration password which is by default 'serverware'.

sw3 deploy dl360 g7 14.png

Step 1:

After successful login, SERVERware EULA appears.

sw3 deploy dl360 g7 15.png

Acceptance of the EULA leads to the next step.

Step 2:

Enter your license number, administrator's email, set new administrator's SERVERware GUI password. This password will also apply to shell root account. Select your time zone and click next to continue.

sw3 deploy dl360 g7 16.png

Step 3:

This step will offer you to configure LAN and mirror RAN network. LAN is a local network for SERVERware management and service provision. RAN is a network dedicated to real time mirroring of two servers.

sw3 deploy mirror 17.png

Setup wizard will suggest default configuration for the network interfaces. The machines must be on same LAN network and the same RAN network. Modify network configuration if needed and click Next to proceed to the next step.

Step 4:

Choose the name for the server if you don't like the one generated by the SERVERware (it must be valid per hostname constrains).

sw3 deploy mirror 18.png

Select from the list or enter the LAN IP address of the second (mirrored) machine. Purpose of mirrored setup is to provide storage redundancy, so it will need a few more configuration parameters. LAN Virtual IP is a floating IP address for accessing mirrored storage server. Administration UI IP address will be used for CONTROLLER VPS (GUI).

CONTROLLER VPS is setup automatically on the storage server, and its purpose is to provide administrative managing web console as well as to control and monitor SERVERware hosts and VPSs.

sw3 deploy mirror 19.png

Once you click Finish button, wizard will initialise and setup the network storage. When complete, setup will present the summary info.

sw3 deploy mirror 20.png

Wait a few seconds for CONTROLLER to start and click on the Controller Web Console link to start using SERVERware and creating VPSs.