I realise that using juju it states there's a fully redundant 'on premis' installation - if I have read this right, this only puts the services onto seperate servers. What I would like is a fully clustered / failover type landscape 'on premis' service, does anyone know if this possible in landscape - or do I need to resort to failover software.
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If you are referring to the landscape-scalable juju bundle, you are correct, as the configuration is to have units spread on different machines. However, the services used in this bundle (postgresql, rabbitmq-server, haproxy, landscape-server) support clustering to some extent. Depending on your needs and the load, you can call juju add-unit <service-name> to effectively cluster and/or scale some of those services and have fallbacks.
I suggest you also check the documentation of those individual juju charms (rabbit, haproxy, postgres), as those charms have a few options related to clustering/fallbacks,
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