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| The main goal is to go as close to no downtime as possible. | System uptime and availability is being increasingly important. Various services are expected to be accessibly at all times. The challenge is to configure and maintain such a system, with minimal downtime, and preferable no downtime at all. At first this sounds like a very complicated task, but breaking it down to its components makes it possible. |
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| Deciding the level of importance of the system really depends on the physical environment. As we can see there are | |
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| == Manage Virtual Machines == | == Manage Virtual Domains == |
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| * [[Creating|Creating]] * [[Cloning|Cloning]] * [[Migrate|Migration]] |
* [[Domain Creation|Domain Creation]] * [[Domain Console|Domain Console]] * [[Domain Destruction|Domain Destruction]] * [[Domain Editing|Domain Editing]] * [[Domain Cloning|Domain Cloning]] * [[Domain Migration|Domain Migration]] |
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| This project is based on the GNU/Linux software packaged by Debian, currently the stretch release. The information provided here will most likely work on other GNU/Linux systems as well. Basic knowledge of GNU/Linux commandline tools, file editing etc. is required to use this guide. | == Network Planning == * [[Network Planning|Network Planning]] == Configure a Redundant Service == * [[DNS|DNS]] * [[DHCP|DHCP]] * [[NTP|NTP]] * [[GlusterFS|GlusterFS]] * [[Corosync and HA-proxy|Corosync and HA-proxy]] * [[Mariadb|Mariadb]] * [[Redis|Redis]] * [[Apache|Apache]] * [[LDAP|LDAP]] * [[Postfix|Postfix]] * [[Dovecot|Dovecot]] * [[Nextcloud|Nextcloud]] * [[OPNsense|OPNsense]] ''This project is based on the GNU/Linux software packaged by Debian, currently the buster release. The information provided here will most likely work on other GNU/Linux systems as well. Basic knowledge of GNU/Linux commandline tools, file editing, network etc. is required to use and understand this guide.'' |
Its all about uptime!
System uptime and availability is being increasingly important. Various services are expected to be accessibly at all times. The challenge is to configure and maintain such a system, with minimal downtime, and preferable no downtime at all. At first this sounds like a very complicated task, but breaking it down to its components makes it possible.
These are our worst foes
Deciding the level of importance of the system really depends on the physical environment. As we can see there are
- Power outage
- Internet access
- Hardware malfunction
- Software updates
To get around this a redundant system has to be built. Realizing that a redundant system consists of many redundant parts, virtualization naturally comes to mind.
Configure your system
Manage Virtual Domains
Network Planning
Configure a Redundant Service
This project is based on the GNU/Linux software packaged by Debian, currently the buster release. The information provided here will most likely work on other GNU/Linux systems as well. Basic knowledge of GNU/Linux commandline tools, file editing, network etc. is required to use and understand this guide.