node

GKE: Determine Anthos on-prem GKE master node and IP address


Categories: Hyperscaler, Kubernetes

If you are using Anthos GKE on-premise and need to determine which node of your Admin Cluster is the master, query for the master role.  The label is ‘node-role.kubernetes.io/master’. $ kubectl get nodes -l node-role.kubernetes.io/master NAME STATUS ROLES AGE VERSION gke-admin-master-adfwa Ready control-plane,master 7d v1.24.9-gke.100 # using wide will also show External and Internal IP … GKE: Determine Anthos on-prem GKE master node and IP address

GCP: list of available GKE cluster versions in region and channel


Categories: Hyperscaler

If you are going to create a GKE cluster in a region, you may need to be explicit with the version of the master control plane and worker nodes.  Below is how you would list the available versions. # specify your region region=us-east1 gcloud container get-server-config –region=$region

ELK: Scaling an ElasticSearch Cluster


Categories: DevOps

The heart of the ELK stack is Elasticsearch.  In order to provide high availability and scalability, it needs to be deployed as a cluster with master and data nodes.  The Elasticsearch cluster is responsible for both indexing incoming data as well as searches against that indexed data. Resources As described in the documentation, if there … ELK: Scaling an ElasticSearch Cluster

ELK: Federated Search with a Tribe node


Categories: DevOps

Although the ELK stack has rich support for clustering, clustering is not supported over WAN connections due to Elasticsearch being sensitive to latency.  There are also practical concerns of network throughput given how much data some installations index on an hourly basis. So as nice as it would be to have a unified, eventually consistent … ELK: Federated Search with a Tribe node

ELK: Pointing Kibana to a Client Node


Categories: DevOps

Kibana is the end user web application that allows us to query Elasticsearch data and create dashboards that can be used for analysis and decision making. Although Kibana can be pointed to any of the nodes in your Elasticsearch cluster, the best way to distribute requests across the nodes is to use a non-master, non-data … ELK: Pointing Kibana to a Client Node

Node.js: Packaging modules for offline deployment using npm-bundle


Categories: DevOps

In a production environment, it is common to have restricted internet access on the production deployment hosts.  This means that using the standard ‘npm install’ and pulling modules from the registry.npmjs.org repository is not an option. Given the breadth of the dependency graph required for most modules, this packaging is something you want automated without … Node.js: Packaging modules for offline deployment using npm-bundle