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Kiuwan on premises is based on a client-server architecture that includes these major server components:

  • Apache web server
  • Wildfly application server
  • MySQL database
  • Redis in-memory data store

Kiuwan on premises can be deployed on a number of decentralized servers and accessed by users via HTTPS website.

Kiuwan and its roles

Kiuwan on Premises defines three different roles for each Kiuwan instance:

  • Kiuwan front: receives and answers HTTPS requests, both for the web application and REST API calls.
  • Kiuwan analyzer: processes analysis results asynchronously.
  • Kiuwan scheduler: processes background tasks such as notifications or live database upgrades.

The default installation will create a Kiuwan instance of each role.

Supplied services

All needed services are supplied as Docker containers. The following table summarizes all the available services:

Image nameServicesProviderDefault number of containers
kiuwan/apacheloadbalancerloadbalancerKiuwan1
kiuwan/wildflykiuwanwildfly-f[1-8]Kiuwan1
wildfly-a[1-8]1
wildfly-s[1-4]1
kiuwan/updaterkiuwanupdaterkiuwanKiuwan1 (temporal)
mysql:5.7.27mysqlDocker Official Images1
redis:5.0.5

redis_0000[n]

Docker Official Images6
clustercreator1 (temporal)

The following diagram shows the infrastructure that KoP installer will create by default:

 

The main purpose of each piece is (container names are shown between parentheses):

  • Apache (loadbalancer): an Apache instance that balances the traffic between Kiuwan frontals (kept in the default installation to allow easy frontal scaling).
  • Kiuwan front (wildfly-f1): a Kiuwan frontal.
  • Kiuwan analyzer (wildfly-a1): a Kiuwan analyzer.
  • Kiuwan scheduler (wildfly-s1): a Kiuwan scheduler.
  • MySQL (mysql): the main Kiuwan database.
  • Redis cluster (redis_0000[n]): redis store nodes. Used by Kiuwan as a data cache.
  • Redis cluster creator (clustercreator): a temporal redis container that configures each Redis node as a cluster.
  • Kiuwan updater (updater): a temporal Kiuwan instance that installs, updates and upgrades needed data or configuration.

Clustering support

Depending on your needs, Kiuwan on premise architecture supports both clustered environments and single-host installations. You can:

  • Keep all services in an all-in-one host installation.
  • Decide where each service will be installed, one by one.
  • Externalize one, some or all of the provided non-kiuwan services:
    • Apache load balancer
    • Redis
    • MySQL

All kiuwan instance containers can be scaled up (to a limit) or down to the default configuration.

 

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