Sysctl

The sysctl analyzer checks the output of the Sysctl collector.

Parameters

There are no parameters available for this analyzer.

Outcomes

The conditional in the when tests whether a sysctl parameter is equal to a value for at least one node. For example, the conditional when: net.ipv4.ip_forward = 0 evaluates to true if at least one node is found to have IP forwarding disabled.

All nodes for which the condition is true are prefixed to the message in the outcome. For example, if the outcome message is IP forwarding not enabled, and the nodes a.example.com and c.example.com were matching the condition, the result message would be Nodes a.example.com, b.example.com: IP forwarding not enabled.

Example Analyzer Definition

apiVersion: troubleshoot.sh/v1beta2
kind: SupportBundle
metadata:
  name: sample
spec:
  collectors:
    - sysctl:
        image: debian:buster-slim
  analyzers:
    - sysctl:
        checkName: IP forwarding enabled
        outcomes:
        - fail:
            when: "net.ipv4.ip_forward = 0"
            message: "IP forwarding is not enabled"