Kublr Release 1.19.1 (2020-09-24)

Kublr Quick Start

sudo docker run --name kublr -d --restart=unless-stopped -p 9080:9080 kublr/kublr:1.19.1

The Kublr Demo/Installer is a lightweight, dockerized, limited-functionality Kublr Platform which can be used to:

  • Test setup and management of a standalone Kubernetes cluster
  • Setup a full-featured Kublr Platform

The Kublr Demo/Installer stores all of the data about the created clusters inside the Docker container. If you delete the Docker container you will lose all data about the created clusters and the Kublr platforms. However, you will not lose the clusters and the platforms themselves.

We recommend using the Kublr Demo/Installer to verify if a Kubernetes cluster can be created in your environment and to experiment with it. To manage a real cluster and experience all features, you can create a full-featured Kublr Platform in a cloud or on-premise.

Overview

This update contains critical patches and improvements, fixes in BareMetal upgrade procedure, and support for scaling up master group in GCP clusters. Default versions of Kubernetes 1.17 and 1.18 are upgraded to v1.17.12 and v1.18.9 correspondingly.

Important Changes

  • GCP clusters master node group scale up support
  • BareMetal upgrade process stabilized (zero downtime support)
  • Kubernetes 1.18.9 by default for Kublr Control Plane cluster

Improvements and stability

  • UI. Features upgrade improvements
  • Features update improvement when cluster is upgraded from Kublr 1.17.1+
  • Imposible to delete vSphere platform if some Kublr features were updated

AirGap Artifacts list

Refer to AirGap deployment instructions for details on Kublr installation.

KCP image and binary archive load scripts:

KCP image and binary archives:

Supported Kubernetes versions

v1.18

v1.17

v1.16 (Deprecated in 1.20.0)

v1.15 (End of support in 1.20.0)

Components versions

Kubernetes

ComponentVersionKublr AgentNote
Kubernetes1.181.18.9-8default v1.18.9
1.171.17.12-11
1.161.16.13-5Deprecated in 1.20.0
1.15.(11, 12)1.15.12-7End of support in 1.20.0

Kublr Control Plane

ComponentVersion
Kublr Control Plane1.19.1-93
Kublr Operator1.19.1-37

Kublr Platform Features

ComponentVersion
Kublr System1.19.1-32
LocalPath Provisioner (helm chart version)0.0.12-6
Ingress1.19.1-34
nginx ingress controller (helm chart version)1.36.2
cert-manager0.14.2
Centralized Logging1.19.1-39
ElasticSearch6.8.4
Kibana6.8.4
RabbitMQ3.8.3
Curator5.8.1
Logstash6.8.4
Fluentd2.7.1
Centralized Monitoring1.19.1-35
Prometheus2.13.0
Kube State Metrics2.4.1
AlertManager0.19.0
Grafana6.5.1
Kublr KubeDB1.19.1-32
kubedb (helm chart version)v0.14.0-alpha.2

Known issues and limitations

  1. Managed cluster migration from previos major Kublr version (<1.18.0) have limitations related to updgrading Kublr components to Kublr 1.18. Please refer to Kublr 1.18 migration document for more detail.

  2. In some cases, cluster upgrade process crashes on Azure due to underlying VM issues. The issue usually resolves after re-running the update procedure in ~30 minutes.

  3. Kubernetes cluster auto-scaler may fail to scale AWS Kubernetes cluster if scheduled on a worker node rather than on a master node. As a workaround, node affinity rule may be applied to schedule the cluster autoscaler to the masters; the fix is scheduled for Kublr 1.19.2 release (see Release Notes 1.19.2).