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You can install SafeLine on Kubernetes using either a preview or a separately maintained LTS Helm chart, but the chart repositories cited here are third-party projects—not confirmed Chaitin-endorsed production deployment paths. SafeLine itself is a self-hosted WAF and reverse proxy; its official repository also names an Ingress-NGINX integration for protecting Kubernetes ingress traffic. Choose a chart track, review and pin its version and values, secure its defaults, then validate the deployment and traffic flow in a non-production environment before relying on it.
What you are installing—and what the charts do not establish
SafeLine’s official project repository describes it as a self-hosted web application firewall and reverse proxy, and identifies an Ingress-NGINX integration for Kubernetes ingress traffic. The repository points to installation and configuration material, but the chart instructions below come from separate GitHub repositories. Their instructions are useful examples; they do not, by themselves, establish that Chaitin endorses or maintains those charts for production.
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There are two chart tracks in the repositories covered here: one labeled preview and one labeled stable LTS. Treat their names as the repositories’ own maturity labels, not as independently verified support or maintenance guarantees. Confirm current vendor guidance and chart maintenance status before making a production choice.
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| Track | Chart reference | International image note | Operational guidance in the README |
|---|---|---|---|
| Preview | yaencn/safeline |
The preview README documents global.image.registry=chaitin and global.image.region="-g" for international images beginning with appVersion 8.8.2 on x86_64. |
It warns that Deployments should run one pod replica; more may cause WAF errors. It also documents service exposure and database defaults. |
| LTS | yaencn/safeline-lts |
The LTS README documents the corresponding international-image settings beginning with appVersion 8.8.0. Check the current values and architecture support before using them. | It also warns that Deployments should run one pod replica; more may cause WAF errors. |
These version thresholds and settings are repository documentation, not a guarantee that a particular chart release remains current. Before installation, inspect the selected repository’s available chart versions and values, then pin the version you intend to deploy. Do not assume that a mutable README example identifies the latest release.
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Check cluster prerequisites and deployment settings
Before running Helm, confirm that your cluster has a working ingress controller if you plan to use ingress, a DNS name for any exposed hostname, suitable persistent storage, and network access to the required image registry. The chart examples assume a usable Kubernetes and Helm environment; they do not establish platform-specific prerequisites for your cluster.
- Change the database password. The preview chart documents
changeitas the internal PostgreSQL password default. Set a unique secret value rather than carrying that default into a deployment. - Review cryptographic defaults. The preview README advises replacing the default EC private key for production.
- Decide how services are exposed. The preview README documents Tengine as a
LoadBalancer, management web as NodePort31443, and internal PostgreSQL as a database option. These are chart defaults, not universal recommendations; check which services need to be reachable in your environment. - Plan persistence. Inspect the selected chart’s current storage values and ensure they match your storage class and retention requirements before installing.
- Keep the replica warning in view. Both repositories warn against running multiple pod replicas for their Deployments because that can cause WAF errors. Do not infer horizontal-scaling or high-availability support from these chart instructions.
Install using Helm
The commands below follow the preview repository’s example. They are repository examples, not independently tested commands. Review the chart’s current README and values, including the chart version, before applying them to a cluster.
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Add the chart repository:
helm repo add yaencn https://helm.yaencn.com/charts -
Install the preview chart in a dedicated namespace and enable its documented console ingress example:
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waf.example.comwith a hostname you control. The example does not pin a chart version or set a non-default database password; review the chart’s version and values and supply the necessary secure configuration before using it.
For the LTS track, the LTS README uses the chart reference yaencn/safeline-lts and shows an ingress hostname in its installation example. Follow that repository’s current instructions rather than assuming every preview-chart value or option is identical.
Configure console ingress, TLS, and application traffic separately
Console ingress is an optional chart setting; the chart documentation shows it disabled by default. Its example uses the nginx ingress class. If you configure a TLS Secret for the console hostname, create that Secret before installing the chart, as the chart README instructs.
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Management-console access is not the same as application traffic passing through SafeLine. The console ingress setting exposes the management interface; it does not, on its own, demonstrate that a website has been onboarded behind the WAF.
The preview README documents global.exposeServicesAsPorts.enabled as true by default and recommends port exposure by default. For a chart configuration using Ingress mode for services, it says to set that value to false. Review the selected chart’s current values before changing the exposure model, and distinguish this chart setting from the official project’s separately named Ingress-NGINX integration.
Validate the release before routing real traffic
After installation, use your normal Kubernetes operating procedures to review the Helm release status, pod readiness, Services, Ingress resources, logs, and persistence. These are practical checks, not a readiness checklist prescribed by the cited chart documentation. Investigate failed pods, missing storage, unexpected external exposure, or an ingress hostname that does not resolve before moving forward.
Then add a protected website and route its traffic through SafeLine using the integration and application-onboarding instructions that match your chosen setup. The official repository names an Ingress-NGINX integration, but the chart extracts here do not establish its exact onboarding steps. Do not assume that enabling the management-console ingress configures application traffic automatically.
Test safely and plan recovery
Exercise benign application traffic and controlled security test cases in a non-production environment first. Watch application behavior and logs for false positives, and make sure you know how to remove or roll back the release and restore the prior application route before exposing production traffic. These are operational precautions, not reported test results for SafeLine or either chart.
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