knf lma stack #0

Supports: None
Add to new model

Pre-requisites

Minimum requirements

  • An Ubuntu 20.04 LTS, 18.04 LTS or 16.04 LTS environment to run the commands
  • At least 20G of disk space and 8G of memory are recommended
  • An internet connection

Prepare environment

Microk8s:

sudo snap install microk8s --classic --channel 1.19/stable

sudo usermod -a -G microk8s `whoami`
sudo chown -f -R `whoami` ~/.kube

newgrp microk8s
microk8s.status --wait-ready
microk8s.enable storage dns

Juju controller:

sudo snap install juju --classic --channel 2.8/stable
juju bootstrap microk8s

Juju model:

juju add-model ecosystem microk8s

Requirement for elasticsearch:

sudo sysctl -w vm.max_map_count=262144

Deployment

juju deploy cs:knf-lma-stack

Scaling

juju scale-application mock-knf 3

Known issues

MongoDB takes a lot of time to configure the replica set

In the start hook, MongoDB will try to initialize the replica set. Normally, when Juju will trigger that hook, the mongod service of the workload pod won't be ready, so the start hook will be deferred. This mean that before running the next hook, the start hook will be executed again. This process keeps going until the mongod service is up and running, and the charm can configure the replica set.

Usually, the update-status hook will make possible the re-trigger of the start hook in order to configure the replica set. The update-status-hook-interval defaults to 5m. If we want to have a faster deployment, we can override the value update-status-hook-interval to 1m.

juju model-config update-status-hook-interval=1m

Bundle configuration

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