VPS Hosting with KloxoNG

KloxoNG as a Zero-Licence Control Panel on KVM-Backed VPS Infrastructure

KloxoNG VPS hosting pairs AvaHost's KVM-virtualised infrastructure with a community-maintained, open-source control panel that carries no licence fee. The combination targets SysAdmins, developers, and agency operators who require root-level access and a functional web-based management interface without the recurring cost of commercial panels such as cPanel or Plesk. Each VPS runs on dedicated vCPU allocations and NVMe storage, with DDoS protection active on all plans.

KloxoNG is the actively maintained fork of the original Kloxo project. Its architecture is deliberately lightweight: the panel daemon consumes a small resident memory footprint, meaning the RAM allocation on a given plan is available primarily for hosted workloads rather than control-plane overhead. On entry-level configurations — VPS One at €5.00/mo with 1 vCPU and 2 GB RAM — this resource efficiency is operationally significant. A commercial panel on the same tier would consume a disproportionate share of available memory before a single site process starts.

AvaHost provisions KloxoNG VPS instances on KVM hypervisors with dedicated IPv4 addresses. KVM's hardware-level isolation ensures that vCPU steal time and memory balloon pressure from neighbouring tenants do not affect your instance's scheduler behaviour. Combined with NVMe-backed storage across all plans, iowait figures under sustained PHP-FPM or database query loads remain low relative to SATA SSD shared-hosting environments — directly benefiting TTFB and the responsiveness of administrative operations within the panel itself.

Panel Architecture: What KloxoNG Controls and Why Resource Isolation Matters

KloxoNG exposes a single web-based dashboard from which operators manage the full hosting stack: DNS zone records, virtual domains, mail server configuration, FTP account provisioning, and both MySQL and PostgreSQL database instances. There is no dependency on a separate licence server, no call-home telemetry, and no feature gating behind a paid tier.

Key functional areas within the panel:

• DNS zone managementFull A, CNAME, MX, TXT, and PTR record control per domain with zone-level TTL configuration. Operators running multi-domain environments can manage all records from one interface without shell access.
• Mail server integrationBuilt-in MTA configuration with webmail access. Mail accounts, aliases, and spam filter settings are configurable through the panel UI, reducing the need for direct Postfix or Dovecot configuration in standard deployments.
• Database provisioningMySQL and PostgreSQL databases and users are created and managed through the panel, removing the need to script user grants manually for routine provisioning tasks.
• FTP account managementPer-domain FTP users with configurable directory scoping, useful for agencies granting client upload access without exposing shell credentials.
• Multi-domain hostingKloxoNG supports multiple virtual hosts under a single panel instance — the primary reason resellers and agencies select it over single-site alternatives.

Because KloxoNG runs on a KVM-isolated VPS rather than a shared environment, CPU and RAM allocations are guaranteed at the hypervisor level. A traffic spike to one virtual host does not degrade the panel's responsiveness or the performance of other domains you manage — a structural difference from shared hosting where noisy-neighbour effects are a known operational risk.

Business outcome: Eliminating the licence fee removes a fixed monthly cost that scales with the number of managed servers. For an agency operating three to five VPS instances, the saving relative to per-server commercial panel pricing is material. The absence of a vendor dependency also means panel updates follow the open-source release cycle rather than a commercial roadmap, reducing the risk of forced upgrades tied to licence renewals.

KVM Virtualisation and NVMe Storage: Infrastructure Causality for Panel-Hosted Workloads

All AvaHost VPS plans use KVM virtualisation. KVM provides full hardware emulation with no shared kernel between host and guest, which is a prerequisite for certain KloxoNG configurations — particularly those involving custom kernel modules, iptables or nftables rule sets, and services such as fail2ban or firewalld that interact directly with the kernel's netfilter subsystem.

NVMe storage is present across all plans, from VPS One (25 GB NVMe) to VPS Ultra (160 GB NVMe at €40.00/mo with 8 vCPU and 16 GB RAM). The practical consequence for panel-hosted workloads is reduced fsync latency for database write operations and faster PHP opcode cache warm-up after process restarts. For KloxoNG specifically, configuration writes and log rotation operations complete faster, reducing the window during which the panel UI may feel unresponsive after a configuration change.

• KVM isolationDedicated vCPU scheduling and fixed RAM allocation prevent steal time accumulation under load from other tenants.
• NVMe across all plansConsistent low-latency storage behaviour from entry tier to top tier — no plan-specific SSD downgrade to account for when sizing.
• Dedicated IPv4Each VPS receives a dedicated IPv4 address, necessary for correct PTR record configuration when running a mail server through KloxoNG's integrated MTA.

For teams using monitoring tooling such as Prometheus with node_exporter or Datadog's infrastructure agent, the KVM guest exposes standard Linux performance interfaces. Metrics for CPU steal, iowait, memory usage, and disk throughput are accessible through conventional tooling without hypervisor-specific instrumentation.

Business outcome: KVM isolation and NVMe storage reduce the two most common sources of unpredictable latency in shared-infrastructure environments — CPU contention and disk I/O queuing. For a KloxoNG-managed server hosting client sites with SLA commitments, this translates directly to lower downtime risk and more predictable response times under traffic spikes.

Upgrade Path: From KloxoNG VPS to Managed Dedicated Infrastructure

KloxoNG VPS hosting is appropriate for workloads that fit within the resource envelope of the VPS tier. The plan range runs from VPS One (1 vCPU, 2 GB RAM, 25 GB NVMe at €5.00/mo) to VPS Ultra (8 vCPU, 16 GB RAM, 160 GB NVMe at €40.00/mo). Use the plan selector to match vCPU and RAM to your expected concurrent process count and working set size.

When workloads consistently exhaust vCPU allocations under normal operating load — not peak spikes — or when storage throughput becomes a bottleneck the VPS tier cannot resolve, the logical progression is to Dedicated Servers. Dedicated infrastructure provides full physical CPU and RAM allocation with no hypervisor overhead, relevant for high-concurrency database backends, transcoding pipelines, or compliance-isolated application tiers.

For operators currently on Shared Web Hosting evaluating KloxoNG as a migration target, the primary driver is typically the need for root access, custom software installation, or isolation from shared-resource ceilings. KloxoNG on a VPS satisfies all three. The entry point at €5.00/mo makes the transition financially accessible without requiring an immediate commitment to a larger plan.

AvaHost also offers paid commercial panels — Plesk, cPanel, ispmanager, and DirectAdmin — as alternatives to KloxoNG on the same VPS Hosting infrastructure. KloxoNG is the zero-cost option for operators comfortable with community-supported software who want to preserve the full VPS budget for workload resources. All plans include DDoS protection and 24/7 support. Payments are accepted via Visa, Mastercard, PayPal, bank transfer, WebMoney, and over 20 cryptocurrencies including BTC, ETH, and USDT.