Fabian Lee : Software Engineer

Kubernetes: patch every array element using kubectl and jq

January 18, 2023
Categories: Kubernetes

Below is an example using ‘kubectl patch’ to update the securityContext of a single, specific container named ‘my-init-container1’ of the ‘initContainers’ list. kubectl patch deployment my-deployment -n default –patch='{ “spec”: { “template”: { “spec”: { “initContainers”: [ { “name”: “my-init-container1”, “securityContext”: { “runAsUser”: 999 } } ] } } } }’ But ‘initContainers’ is an … Kubernetes: patch every array element using kubectl and jq

Kubernetes: jsonpath range to iterate list and extract fields

January 26, 2022
Categories: Containers

The kubectl jsonpath has a built-in ‘range’ directive that allows you to iterate lists, and then extract elements from each list item. For example, if you wanted a list of all the pod names and their namespace in CSV format, you could use the following: # pods and their namespace with just kubectl kubectl get … Kubernetes: jsonpath range to iterate list and extract fields

Zabbix: Sending Zabbix metrics using a Go client

May 19, 2017
Categories: Monitoring, Scripting

The open-source Zabbix monitoring solution has a published, simple binary protocol that allows you to send metrics to the Zabbix server without relying on the Zabbix Agent – which makes it very convenient for integration with other parts of your infrastructure. In this article, I’ll show how to use the go-zabbix package for sending metrics to … Zabbix: Sending Zabbix metrics using a Go client

Zabbix: Accessing Zabbix using the py-zabbix Python module

April 21, 2017
Categories: Monitoring, Python

The open-source Zabbix monitoring solution has a REST API that provides the ability for deep integrations with your existing monitoring, logging, and alerting systems. This fosters development of community-driven modules like the py-zabbix Python module, which is an easy way to automate Zabbix as well as send/retrieve metrics.