kubernetes-devops

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K8s configuration skills maintained by openclaw provide production-grade YAML templates and built-in security hardening strategies to help build safe and reliable cloud-native deployment solutions.

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Usage instructions

This is a configuration generation skill designed specifically for Kubernetes cloud native deployment. It is maintained by the openclaw community and provides a full range of YAML manifest templates from basic Deployment to complex StatefulSet and CronJob. This skill not only covers all scenario workload types such as stateless applications, stateful databases, and scheduled tasks, but also has built-in security hardening solutions that meet the requirements of production environments, including security context configurations such as non-root operation, read-only file systems, and minimized permissions, as well as high-availability guarantee mechanisms such as health probes and resource restrictions.

Core usage

Users can use this skill to obtain standardized Kubernetes resource configuration templates, covering core resources such as Deployment (stateless application), StatefulSet (stateful service), CronJob (scheduled task), Service (network exposure), Ingress (traffic entry), ConfigMap/Secret (configuration management), and PVC (persistent storage). The skill provides a multi-environment (dev/staging/prod) configuration management solution based on Kustomize, which supports quick replacement of parameters such as application name, image version, resource quota, etc. through placeholders, and is equipped with complete verification commands (kubectl dry-run, kube-score, kube-linter) to ensure configuration compliance.

Significant advantages

first,Safety first design, all templates are enabled by defaultrunAsNonRoot: trueallowPrivilegeEscalation: falsereadOnlyRootFilesystem: trueand other security policies, in line with enterprise-level security baselines. Secondly,production ready, with built-in liveness/readiness probes, resource requests and limits (requests/limits), and standard labeling system, it can be directly used in production environments. third,Comprehensive scene coverage, from single-copy debugging to multi-copy high availability, from internal ClusterIP to external LoadBalancer, from configuration management to storage mounting, providing a one-stop solution. fourth,Best Practice Guidance, specify anti-patterns (e.g. prohibit the use of:latestlabels, prohibiting hard-coded passwords) to reduce configuration risks.

Potential Disadvantages and Limitations

As a purely document-based skill, its limitation is thatLack of dynamic generation capabilities, cannot automatically calculate resource quotas or generate complex logic based on user input. Scenarios that require parameterized rendering (such as dynamically generating configurations based on environment variables) still need to be used with Helm or Kustomize. also,template fixityStronger. When facing the customized requirements of non-standard architecture or special cloud vendors (such as specific AWS/Azure annotations), YAML needs to be manually adjusted. For Kubernetes users with completely zero foundation,Professional thresholdIt still exists, and you need to understand basic concepts such as Pod, Service, and Ingress to use it correctly.

Suitable target group

This skill is especially suitable for the following people: those with basic K8s knowledgeDevelopment Engineer, need to quickly generate production-level deployment configurations that comply with security specifications;DevOps EngineerandSRE, responsible for formulating deployment standards and template specifications within the team;Technical team leader, hoping to establish a unified resource configuration baseline to prevent team members from using unsafe default configurations; andCloud native learner, understand Kubernetes best practices and security hardening points by reading production-level templates.

Risks and precautions for use

Although this skill itself is a static document with no code execution risk, you still need to pay attention to the following in actual application:Configuration verification risks, the generated YAML needs to go through--dry-run=serverVerify before applying to avoid service interruption caused by direct writing to the production cluster;Risk of sensitive information leakage, the Secret example in the template uses placeholders such aschangeme), if the user submits it directly to the Git warehouse without replacing it, it may cause the credentials to be leaked, and should be used in conjunction with Sealed Secrets or Vault;Resource estimation risk, the CPU/memory limits (such as 256Mi/512Mi) in the template are sample values ​​and need to be adjusted according to the actual application load, otherwise it may cause OOMKilled or resource waste;Version compatibility risk, YAML is written based on newer Kubernetes API versions, and older version clusters (<1.19) may have field incompatibility issues.

Safety review

Core functions

This skill focuses on generating production-ready Kubernetes resource configuration files, covering the complete life cycle of cloud native application deployment:

  • Workload resources: Deployment (stateless), StatefulSet (stateful), DaemonSet (node ​​agent), Job/CronJob (batch processing and scheduled tasks)
  • Network and services: ClusterIP (internal communication), NodePort (development testing), LoadBalancer (cloud load balancing), Ingress (HTTP routing and TLS termination)
  • Configuration management: ConfigMap (non-sensitive configuration), Secret (credential management, emphasizing best practices for encrypted storage)
  • Persistent storage: Reasonable selection guide for PersistentVolumeClaim and multiple access modes (RWO/ROX/RWX)

Significant advantages

1. Built-in security reinforcement: mandatoryrunAsNonRootallowPrivilegeEscalation: falsecapabilities.drop: [ALL]and other security contexts, directly compliant with CIS Kubernetes Benchmark and Pod Security Standards
2. Complete health detection: Provides standard HTTP templates for liveness/readiness probes to avoid service avalanches
3. Resource management and control specifications: Default CPU/memory requests/limits to prevent resource contention and OOMKill
4. Labeling system standardization: Follow the official Kubernetes recommended tags (app.kubernetes.io/*), supporting multi-dimensional screening and cost allocation
5. Multiple environment management: Natively supports Kustomize architecture, and overlay mode implements dev/staging/prod configuration separation

potential limitations

  • Mainly static templates: YAML templates are generated instead of dynamic rendering, placeholders (such as<app-name>) needs to be replaced manually and lacks Helm’s template function capabilities.
  • Cloud vendor features are limited: LoadBalancer annotation is only an example for AWS NLB, Azure/GCP requires users to consult the corresponding documents themselves.
  • Advanced scheduling is not covered: Does not involve advanced features such as Pod Topology Spread Constraints, PodDisruptionBudget, priority and preemption
  • Secret management is lightweight: Only reminds to use Sealed Secrets/Vault, no integration guide is provided

Applicable people

  • DevOps Engineer: Quickly build a K8s baseline configuration that complies with security regulations
  • development team: Migrating from local Docker Compose to K8s requires a standardized YAML starting point
  • security auditor: Refer to the built-in Security Checklist to verify existing configuration compliance
  • technical learner: Understand the best practices of writing K8s resource objects through complete examples

Risk warning

|risk category|illustrate|Mitigation recommendations|
|---------|------|---------|
|Configuration drift|The template is a static file, and manual replacement of placeholders is prone to errors.|Works with CI/CD's `envsubst` or Kustomize management variables|
|Secret leaked|The example contains placeholder passwords, and users may submit them by mistake.|Force the use of Sealed Secrets, External Secrets Operator or Vault|
|Resource estimates are inaccurate|The default 250m/500m CPU may not be suitable for high concurrency scenarios|Adjust requests/limits based on actual stress testing|
|Version compatibility|Use stable APIs such as `apiVersion: apps/v1`, but old clusters need to be verified|Execute `kubectl api-versions` to confirm compatibility|

Verification toolchain recommendations:kube-score(static scoring),kube-linter(Safety rules),kubectl --dry-run=server(Server-side verification).

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