README
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kubernetes-network-tester
Tests Kubernetes pod-to-pod network connectivity using Prometheus and blackbox-exporter.
Usage
Download from the [Releases][release] page, then run:
./kubernetes-network-tester \
-numhosts 3
-resolver $(kubectl get svc -n kube-system kube-dns -o jsonpath='{.spec.clusterIP}'):53 \
checksvc1 checksvc2 checksvc3
This will create daemonsets and services named checksvc2, checksvc2, and checksvc3. It will also create a Prometheus deployment and service named 'prometheus'.
The Prometheus configuration is designed to have every checksvc pod query every checksvc pod. kubernetes-network-tester will exit with an error if it can't validate every pod-to-pod connection via Prometheus before it times out.
Documentation
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Overview ¶
Note: must be built using "-tags netgo" to enforce Go DNS resolver, which allows for properly static linking, but more importantly appears necessary for DNS resolution using a customer dialer. Without netgo, the first name resolution uses our custom Dial method, and thereafter it uses the system resolv.conf settings. Bug?
Source Files