User talk:Jch/consul: Difference between revisions
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As we start from scratch and want to have an isolated network to run our tests, this topic is also an introduction to our new architecture for the cluster (the cloud). | As we start from scratch and want to have an isolated network to run our tests, this topic is also an introduction to our new architecture for the cluster (the cloud). | ||
The 5 machines defined to start our tests will be designed as a virtual cluster and bootstraped as it was a real cluster... | The 5 machines defined to start our tests will be designed as a virtual cluster and bootstraped as it was a real cluster... <br/> | ||
from a virtual laptop booting from a virtual USB stick. | from a virtual laptop booting from a virtual USB stick.<br/> | ||
This first "machine zero" to bootstrap the first PXE server, then to start 2nd and 3rd PXEservers. | This first "machine zero" to bootstrap the first PXE server, then to start 2nd and 3rd PXEservers.<br/> | ||
Then to start a SAN. | Then to start a SAN.<br/> | ||
Then to start a KVM-repo. | Then to start a KVM-repo.<br/> | ||
Then to reboot all KVM-PXE or at least adapt there config to use new repo. | Then to reboot all KVM-PXE or at least adapt there config to use new repo.<br/> | ||
Then to start a LXC host. | Then to start a LXC host.<br/> | ||
(then to start services and other KVM) | (then to start services and other KVM) | ||
Revision as of 19:21, 18 April 2015
Consul
Introduction
This page is currently my experimental log about consul on AL.
Downloaded package: consul-0.5.0-r0.apk from http://repos.mauras.ch/alpinelinux/x86_64/
Will prepare 5 KVM: 3 consul server (in run-from-ram mode) and 2 consul agent (a SAN (NBD) and a LXC host in data mode) on an isolated network.
We will experiment to find the right spec to allocate the consul servers for 100 to 1000 agents.
We plan to orchestrate our VM fleet based on consul events, envconsul and consul-template. All with ash scripts and smart setup.
Install
As we start from scratch and want to have an isolated network to run our tests, this topic is also an introduction to our new architecture for the cluster (the cloud).
The 5 machines defined to start our tests will be designed as a virtual cluster and bootstraped as it was a real cluster...
from a virtual laptop booting from a virtual USB stick.
This first "machine zero" to bootstrap the first PXE server, then to start 2nd and 3rd PXEservers.
Then to start a SAN.
Then to start a KVM-repo.
Then to reboot all KVM-PXE or at least adapt there config to use new repo.
Then to start a LXC host.
(then to start services and other KVM)
We will just focus on the consul installation and configuration parts.
consul server
apk add consul
consul agent
apk add consul
Configuration
Configuration Server
Configuration Agent
Usage
Machines discovery
List machines = list members
list PXEservers = list servers
whois active.PXEservers = get leader
Services discoevry
Register service
List services
Cheks
Key/Value storage
k/v