How do you create conditionals and loops in Helm templates? Provide practical examples.

Helm templates support powerful control structures for dynamic manifest generation.

If/Else Conditionals: {{- if .Values.ingress.enabled }}...{{- else }}...{{- end }} Conditional operators: eq, ne, lt, gt, and, or, not.

Range Loops (Iteration): Loop over arrays: {{- range .Values.nodeSelector }}- {{ . }}{{- end }}. With index: {{- range $index, $service := .Values.services }}. Loop over maps: {{- range $key, $value := .Values.annotations }}.

Practical patterns:

• Conditional resource creation: Entire file omitted if condition false using {{- if .Values.serviceAccount.create }}
• Loop with conditional filter: {{- range .Values.containers }}{{- if not .disabled }}- name: {{ .name }}{{- end }}{{- end }}
• Nested loops for multi-dimensional data

Performance note: Complex loops with hundreds of iterations may slow helm template rendering. For large datasets, consider pre-processing.

Invest now in Acorns!!! 🚀
Join Acorns and get your $5 bonus!

Acorns is a micro-investing app that automatically invests your "spare change" from daily purchases into diversified, expert-built portfolios of ETFs. It is designed for beginners, allowing you to start investing with as little as $5. The service automates saving and investing. Disclosure: I may receive a referral bonus.

Invest now!!! Get Free equity stock (US, UK only)!

Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.

The Robinhood app makes it easy to trade stocks, crypto and more.

Webull! Receive free stock by signing up using the link: Webull signup.