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VPS Hosting
A Global IPv6 Address Does Not Prove VPS Egress
A Linux VPS can show a scope-global IPv6 address and still have no usable IPv6 path. The address belongs to one interface;…
KNOWLEDGE, PUT TO WORK
vps.
VPS dives into Virtual Private Servers. Imagine a physical server sliced into multiple virtual sections, each acting like its own dedicated server. VPS hosting offers increased control, security, and performance compared to shared hosting, but with more flexibility and affordability than a dedicated server. This tag equips you with the knowledge to decide if a VPS is the right fit for your website’s needs.
The knowledge library
32 articlesArticles & guides
Linux
Do Not Remount ext4 Read-Write Until the Disk Is Proven
An ext4 filesystem that suddenly becomes read-only is usually protecting data after the kernel detected a filesystem or storage error. Do not…
Linux
Packets Can Drop Inside Linux Before the Application Sees Them
An interface can remain UP, the process can keep listening, and Linux can still discard receive packets before they reach the application…
Database
PostgreSQL XID Age Is Rising: Find What Autovacuum Cannot Freeze
PostgreSQL transaction IDs are a countdown, not a disk-usage gauge. Every transaction that needs an XID advances a 32-bit counter. Vacuum protects…
Linux
What Broke When NFS Returns a Stale File Handle?
Stale file handle is an identity error, not a generic network outage. The NFS client is presenting a server-issued handle for a…
Security
Rotate SSH Host Keys Without Locking Out VPS Access
Do not overwrite active SSH host-key files in one step. Generate replacement keys under new filenames, load old and new identities together,…
DevOps
Docker Build Cache Is Filling Your VPS: Reclaim Space Safely
If repeated Docker builds are consuming VPS storage, do not begin with a system-wide prune. First prove that BuildKit owns the missing…
DevOps
A RabbitMQ Disk Alarm Can Block Every Publisher
A RabbitMQ node can be running, answering health checks and delivering messages to consumers while every publishing connection is stalled. That split…
Linux
When an LVM Thin Pool Fills Up, Free Space Is Not the Whole Recovery
An LVM thin pool can fail while a filesystem still reports free space, because pool data blocks, pool metadata, volume-group extents and…
Security
Keycloak Login Redirects Break Behind a Reverse Proxy
Broken Keycloak redirects behind a TLS-terminating reverse proxy usually mean that three URL owners disagree: Keycloak's public hostname, the proxy's forwarded request…
Database
A Stale PostgreSQL Replication Slot Can Fill Your Disk
Do not delete files from pg_wal to solve a growing PostgreSQL disk. A persistent physical or logical replication slot tells PostgreSQL that…
Linux
Fix Linux VPS Clock Drift Without Breaking Running Services
Clock drift rarely introduces itself as “clock drift.” It arrives as a certificate that is “not yet valid,” an expired login token…
DevOps
Cloud-Init Says Done, but Your VPS Is Not Ready
A new VPS can carry three different clocks. The provider may label it running when the virtual machine starts, cloud-init may report…
Linux
Why systemd Stops Restarting a Failed Service
start-limit-hit is not the reason your application failed. It means systemd observed too many start attempts inside the unit's configured interval and…
DevOps
Anycast or GeoDNS? Match Failover to the Failure Mode
Anycast and GeoDNS are often presented as rival ways to send users toward a nearby server. That comparison hides the decision that…
DevOps
Harbor on a VPS: Operate a Recoverable Private Registry
A private registry becomes part of the deployment path the moment CI pushes an image that production must later pull. Installing Harbor…
Windows
Windows Server Patching with a Tested RDP Return Path
A Windows Server update can install successfully and still turn a routine maintenance window into an access incident. The server may reboot,…
Database
Redis to Valkey: A Single-Writer Migration Plan
The dangerous moment in a Redis-to-Valkey migration is not installing the new binary. It is the interval when two servers could accept…
AI & Machine Learning
Keep LiteLLM Provider Keys Out of Every Client App
LiteLLM Proxy can give several applications one OpenAI-compatible endpoint without distributing the underlying provider credentials. The safe pattern is to keep the…
Security
Back Up Vaultwarden Without Losing Attachments
A recoverable Vaultwarden backup needs more than db.sqlite3. Capture a consistent database, file attachments, any Sends you intend to preserve, the RSA…
WooCommerce Hosting
Why WooCommerce Scheduled Actions Fall Behind
A WooCommerce scheduled-actions backlog is a symptom, not a cleanup target. Start by finding which hook is late or failing, read its…
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