Solutions and FAQ

Java Applications Resource Management on Kubernetes
Tags: Java, JVM, Resources TABLE OF CONTENTS Resource limits considerations Troubleshooting Java parameters and resource usage References and additi...
Wed, 19 May, 2021 at 12:37 PM
Keycloak in HA Mode
[Supported in Kublr 1.20.0 and later] In order to run keycloak in HA mode you need to use following configuration in the cluster specification: spe...
Fri, 23 Apr, 2021 at 5:44 PM
Kublr Control Plane cannot continue due the k8s cluster upgrade
Overview In most cases,  Kublr Control Plane installation use non HA mode DataBases with one replica deployment. DataBase need PV for persistent data stora...
Wed, 15 Nov, 2023 at 6:10 AM
Kublr Role for Cluster Management without Access to Cluster Root Kubeconfig
Tags: security The following Kublr role enables various cluster operations (update/delete etc) withholding access to the cluster admin kubeconfig file. ...
Tue, 20 Jul, 2021 at 4:42 PM
Kublr seeder replacement
Tag: seeder, clouds The Kublr Seeder component is a SystemD service written in Go, running on managed cluster nodes, and responsible for updating the Ku...
Tue, 7 Nov, 2023 at 10:47 AM
Limit the Set of TLS Ciphers Used by Kubernetes Components, etcd, and Nginx Ingress Controller
Tags: https, ingress, ssl, tls, security TABLE OF CONTENTS Ciphers used by Kubernetes components and etcd Ciphers used by Ngninx ingress controller ...
Wed, 14 Jun, 2023 at 5:10 AM
Logging rabbitmq memory configuration
It is required to configure rabbitmq persistence volume in the following cases: 1. Memory settings for rabbitmq significantly changed (param rabbitmq.rabbit...
Thu, 15 Sep, 2022 at 11:52 AM
Manage Kublr Components and Data on a Cluster Node
TABLE OF CONTENTS Stop Kublr on a Node Start Kublr on a Node Remove Kublr Components and Data from a Node In some situations, especially with on...
Thu, 13 May, 2021 at 4:30 PM
Monitoring Alerts Based on Collected Logs
tags: logging, monitoring TABLE OF CONTENTS Overview Deploy Prometheus ES Exporter Customizing Prometheus ES Exporter configuration Customizing Pro...
Fri, 9 Jul, 2021 at 1:27 PM
Monitoring frequently requested configuration changes
Tags: kcp, monitoring, rules TABLE OF CONTENTS Change/increase Prometheus scrape timeout Customize Alert rules Add custom Prometheus recording rules...
Mon, 19 Jun, 2023 at 8:31 AM