ImpulseCore is the shared addon every Impulse module depends on. Install it first — modules will not activate until Core is present and active.

ImpulseCore

WHMCS shows a blank page right after you click Activate on ImpulseCore. Almost always missing or wrong-version ionCube Loader — install it for your PHP version and restart PHP-FPM.

Blank page after activating ImpulseCore

This fatal means you tried to activate an Impulse module before ImpulseCore itself was installed and active. Install Core first, then come back and activate the module.

Fix: "Class not found: ImpulseCore" when activating a module

Every task on Core's Cron Health panel is red, not just one. The single Core cron line isn't firing — debug at the system cron level.

Cron Health panel shows every task red

One specific cron task is amber or red on the Cron Health panel while the rest are green. The runner is fine — that task's handler is erroring on every run.

Cron Health shows one task failing while others are green

An amber strip at the top of the admin Security tab says the CVE feed hasn't refreshed in over 6 hours. Almost always a transient network reach issue to one of three upstream feeds.

CVE feed is stale (amber strip on the Security tab)

An event from one module isn't reaching a handler in another. Either the subscription was never registered, or the handler is throwing on dispatch.

Hooks aren't firing between Impulse modules

The module you're activating pins a newer ImpulseCore minimum than you have installed. Upgrade Core in place, then re-activate the module.

Fix: "ImpulseCore X.Y.Z required, found A.B.C" on module activation

You clicked Activate on a module and it doesn't appear in Core's Modules-registered table. The activate hook fired but registration didn't complete — almost always a manifest problem.

Module activated but not showing in ImpulseCore's registered table

A short SQL query (or the Projects view in Core's admin tab) tells you which project a given service is grouped with, and what else is bundled alongside it.

How to find which project a service belongs to

Every state change across every Impulse module lands in one table. Filter by module, action, severity, or time — and drop to SQL when the admin UI isn't sharp enough.

How to read the ImpulseCore audit log

Invoke any registered cron task synchronously by name. Useful for debugging a failing task, forcing a daily task without waiting, or dry-running a new task while developing a module.

How to run an ImpulseCore cron task manually

One crontab line invokes Core's cron.php every 5 minutes. The runner walks the registered tasks, dispatches each due task to its owning module, captures status, and surfaces totals on the Overview tab.

How Core's cron runner works

A high-level tour of how Core collects daily host snapshots, refreshes three CVE feeds, correlates risks against snapshots, and applies remediations inside customer maintenance windows.

Security & Maintenance pipeline overview

One table, every state change, every Impulse module. How audit entries are shaped, where to filter them, the default retention behaviour, and the SQL fallback for grep-at-scale queries.

Understanding the audit log

Core upgrades are a drop-in archive replacement. The activate hook runs idempotent schema migrations in place — no manual SQL, no downtime beyond a normal addon reload.

Upgrading ImpulseCore

How to read the Overview tab — Modules registered, Cron heartbeat, Audit log, CVE feed status — and the SQL spot checks for when the admin UI isn't loading.

Verifying ImpulseCore health

A project bundles one or more services across Impulse modules into a single customer-facing grouping — one managed Postgres plus one MinIO bucket plus one cache, all tied to one app.

What is an Impulse project?

ImpulseCore is the shared addon every Impulse module depends on for project membership, cron, hook dispatch, licensing, audit, and the Security & Maintenance pipeline. You only install it once; every module hooks into it.

What is ImpulseCore, and why does every module need it?

A five-step install. Drop the archive into WHMCS, activate the addon, add one crontab line, verify the Overview tab, then activate your modules. ~5 minutes end to end.

Installing ImpulseCore — step-by-step

Feedback

Roadmap

Changelog

Spin up dedicated or shared PostgreSQL instances on Vultr, Hetzner, DigitalOcean, or Linode. Cloud-init handles the OS, Postgres 16, SSL, firewall, and S3 backups — credentials delivered to the customer in under five minutes.

ImpulseDB Postgres

Register API credentials for Vultr, Hetzner, DigitalOcean, or Linode so the module can spin up dedicated Postgres VPS on order. All four are first-class.

Adding a VPS provider for dedicated Postgres

A customer's backups aren't refreshing, or the audit log shows repeated backup.failed entries for a service or host.

Fix: ImpulseDB Postgres backups are failing

ImpulseDB Postgres shows a license-invalid banner and only the Overview tab is reachable. Every other tab redirects back to Tools then License.

Fix: ImpulseDB Postgres license validation fails

You activated ImpulseDB Postgres in WHMCS, but ImpulseCore's Overview tab doesn't show the module under Modules registered.

Fix: ImpulseDB Postgres is not appearing in ImpulseCore's modules registered table

A Postgres host registered with ImpulseDB Postgres is showing as unreachable on the Servers tab, and provisioning tasks targeting it stall or fail.

Fix: a registered Postgres server shows as unreachable

WHMCS shows an ImpulseDB Postgres service as active, but the instance never appears on the admin tab and the customer can't connect.

Fix: a customer's Postgres instance is stuck pending

Surface a customer's hostname, database name, username, and password from the admin tab when they open a support ticket asking for connection details.

How to find a customer's Postgres connection credentials

Nightly logical dumps ship by default. WAL-G adds point-in-time recovery to any S3-compatible target. One-click offsite mirroring exists if you already run ImpulseMinio.

How ImpulseDB Postgres backups work

Where to see aggregate and per-instance usage — storage on disk, active connections, query rate — and how often the numbers refresh.

How to monitor Postgres usage across the fleet

A customer asks for more storage or a larger instance. Where to change quota and instance size, what's immediate, and what triggers a restart.

How to resize a customer's Postgres quota

Plans are what customers buy. Each plan declares tier, instance size, storage, connections, Postgres version, and price — and syncs to a WHMCS product with one click.

Postgres plans: how they tie to WHMCS products

Upload the archive, activate the addon, paste your license key, configure providers, set up a plan, and verify on Core's Overview tab. Most installs are done in ~10 minutes.

Installing ImpulseDB Postgres — step-by-step

How the IPGRES- license key gates the addon, how validation runs through ImpulseCore, and what to do when you migrate to a new domain or your key expires.

Understanding ImpulseDB Postgres licensing

What the module hardens by default — firewall, TLS, admin proxy, pg_hba defaults, role separation — and what you as the operator still own.

Security hardening for ImpulseDB Postgres

ImpulseDB Postgres is the WHMCS module that turns PostgreSQL into a billable product. Two tiers, automated provisioning, backups baked in, audit and CVE pipeline via ImpulseCore.

What is ImpulseDB Postgres, and how does it differ from running Postgres yourself?

Provision MinIO-backed S3 storage from your WHMCS install. Buckets, scoped access keys, usage tracking, file browser, and lifecycle automation — all wired into your existing billing.

ImpulseMinio

WHMCS shows the ImpulseDrive service as active, but no bucket has appeared on the MinIO host and the customer cannot connect.

Fix: a customer's bucket is stuck provisioning

Register a MinIO host with the module — either have it provision a fresh VPS for you, or connect an existing MinIO server you already run.

Adding a MinIO server to ImpulseMinio

ImpulseMinio shows a license-invalid banner, replaces the admin tab with a "license check failed" notice, or refuses to activate licensed features.

Fix: ImpulseMinio license validation fails

You activated ImpulseMinio in WHMCS, but ImpulseCore's Overview tab doesn't list it under "Modules registered". The activate hook didn't successfully call into Core.

Fix: ImpulseMinio is not appearing in ImpulseCore's modules registered table

A storage server registered with ImpulseMinio is showing as unreachable on the admin tab, and any provisioning task that touches it stalls or fails.

Fix: a registered MinIO server shows as unreachable

A plan is marked hidden in the ImpulseMinio admin, but customers still see it on the WHMCS order form as a sub-option.

Fix: a hidden plan still appears as a sub-option in WHMCS checkout

A customer asks "what were my access keys again?" Here's how to look up their bucket, endpoint, and access key from the ImpulseMinio admin.

How to find a customer's bucket credentials

End-to-end flow from a WHMCS order to a live bucket — what the module does, what audit log entries to look for at each step, and where to dig if a provisioning task stalls.

How bucket provisioning works

A customer asks for more (or less) storage. Here's where to change the quota, how it applies, and how it interacts with WHMCS billing.

How to resize a customer's bucket quota

Where to find aggregate and per-bucket storage usage, how often it refreshes, and what to do if usage isn't updating.

How to monitor storage usage

Plans are what your customers buy — storage, bandwidth, bucket counts, region restrictions, and pricing. One click syncs them to WHMCS as products with configurable options.

MinIO plans overview

Drop the archive into WHMCS, activate the addon, configure provider credentials, set up your first plan, and verify ImpulseMinio shows up on the ImpulseCore Overview tab.

Installing ImpulseMinio — step-by-step

How license keys work for ImpulseMinio — the IMINIO- prefix, auto-captured install domain, the 1-hour cache and 7-day grace, and what happens at expiry.

Understanding ImpulseMinio licensing

What the module hardens for you out of the box, and what you still own as the operator — firewall, TLS, admin proxy auth, key rotation, and how the Security & Maintenance pipeline fits in.

Security hardening for ImpulseMinio

ImpulseMinio is the WHMCS module that turns MinIO into a billable, multi-tenant object-storage product. You sell it to your customers as ImpulseDrive; the module handles provisioning, quotas, billing, and patching.