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Viewing articles tagged 'downtime'

A and AAAA Records Pointing a name at an address.THE A RECORDMaps a name to an IPv4 address. The fundamental record... A Realistic First Year as a Reseller What to expect.MONTHS ONE TO THREEReseller plan set up, nameservers configured, packages created... Achieving Deployment Without Downtime Continuous availability.WHAT IT REQUIRESSeveral instances A load balancer Graceful shutdown... AI in Manufacturing Production and quality.WHERE IT IS USEDVisual quality inspection Predictive maintenance... AI in Telecommunications Networks and service providers.WHERE IT IS USEDNetwork fault prediction and prevention Traffic... Alternative Networks Other significant platforms.WHAT THEY GENERALLY OPTIMISE FORThroughput and low fees.HOW THEY... Always Online Serving a cached copy when your site is down.WHAT IT DOESIf our server is unreachable, Cloudflare... An Accessibility Improvement Plan Twelve weeks, an hour a week.WEEKS ONE TO TWORun an automated checker on your main pages Fix... Assessing What Downtime Costs Understanding the stakes.WHAT TO CALCULATERevenue lost per day the business cannot operate... Asset and Maintenance Management Systems Tracking equipment.WHAT THEY RECORDWhat assets exist Where they are Who is responsible Condition... Auctions That Do Not Sell When bidding falls short.WHY IT HAPPENSThe reserve was too high The starting price deterred... Auctions: Everything That Matters, Briefly The auction summary.A BID IS BINDINGDo not bid an amount you are unwilling to pay.DECIDE YOUR... Automating Certificate and Domain Renewal Preventing avoidable outages.WHY AUTOMATEBoth expiries cause complete outages, and both are... Avoiding Online Fraud Against Your Business Patterns to recognise.FAKE PAYMENT CONFIRMATIONSA screenshot of a transfer that was never made,... Backend Development: Common Mistakes What goes wrong repeatedly.TRUSTING THE CLIENTPrices, quantities, identifiers and permissions... Backup and Continuity for Business Systems Surviving failure.WHAT MUST BE PROTECTEDThe database Configuration Customisation and integration... Backup and Disaster Recovery for Windows Environments Protecting infrastructure.WHAT TO BACK UPDomain controller system state File servers and their... Backup Internet Connections Continuity of access.WHY CONSIDER ONEAn outage stops everything: cards, calls, systems,... Billing and Subscription Management Charging correctly, every month.WHAT THE SYSTEM MUST HANDLEPlans and their prices Trials Upgrades... Browser APIs: Everything That Matters, Briefly The summary.REQUEST PERMISSION AT THE MOMENT THE FEATURE IS USED, WITH CONTEXTAsking on page load... Budgeting and Planning IT Spend Financial management.WHAT TO BUDGET FORHardware replacement Software licences and subscriptions... Building Gateway Software The bridge between devices and the network.WHAT A GATEWAY DOESConnects to local devices... Building Trust With Remote Workers The foundation.WHAT BUILDS ITPaying on time Being clear about expectations Being available when... Business Continuity for a Small Business Website Planning for the site being unavailable.THE QUESTIONSWhat does the business lose per day if the... Business Models for IoT How connected products earn.WHAT THE MODELS AREHardware sold, with no ongoing service Hardware... Cable Management Organisation that affects everything.WHY IT MATTERSPoor cabling obstructs airflow, prevents... Card Fraud and Chargebacks Stolen card payments.WHAT HAPPENSAn order is paid with a stolen card.The genuine cardholder... Cash on Delivery Common, and it carries risk.WHY OFFER ITFor many Nigerian customers it is the most trusted... Certificate Management at Scale Automation and lifecycle.WHAT AUTOMATED ISSUANCE PROVIDESCertificates obtained and renewed... Certificate Security and Transparency Preventing misissuance.WHAT MISISSUANCE ISA certificate issued for a name to someone not entitled... Changing Hosting Without Changing Your Domain Your domain and your hosting are independent. You can move hosting while keeping the domain... Changing the Database Without Downtime Schema changes on a live system.WHY IT IS DIFFICULTThe application and the schema must both work... Checking Announcements and Network Status Before opening a ticket about an outage, check whether we already know.ANNOUNCEMENTSSupport >... Checklist: Before Changing DNS Avoiding an outage.RECORD EVERYTHING FIRSTEvery existing record, exactly, including ones you do... Checklist: Monthly Network Check A short routine.EQUIPMENTFirmware current on router and access points Nothing overheating Nothing... Choosing a Hosting Plan at Checkout Four things decide which plan fits.HOW MANY WEBSITESEntry plans typically allow one. If you run... Choosing a Payment Provider What to assess.WHAT TO COMPAREMethods supported Pricing, including all components Settlement... Choosing the Right Hosting Plan The right plan depends on four things: how many sites you run, how much traffic they get, how... Choosing Where to Run Your Application Hosting decisions.WHAT THE OPTIONS AREShared hosting A virtual private server A dedicated server... Cloudflare Error Codes Explained What each number means.ERROR 520: unexpected response from the origin. Usually our server... Common Misconceptions About Data Centres What people get wrong."THE CLOUD IS NOT PHYSICAL"It is buildings full of equipment, with power... Common Reseller Mistakes What goes wrong.UNDERPRICINGThe most common. A monthly fee that does not cover the support... Common Reseller Mistakes and How to Avoid Them The things that most often go wrong, from people who have been through them.SELLING UNLIMITEDYour... Common Seller Mistakes What goes wrong.PRICING ON HOPEThe largest single reason names do not sell.IGNORING LOW OFFERSA... Common VPS Mistakes The ones that cause real damage.NOT SECURING IT BEFORE GOING LIVEAutomated attacks find new... Communicating Downtime and Maintenance to Clients How you communicate during an incident determines whether clients remember it at all.DURING AN... Communicating During an Incident When something is down.TELL THEM FIRSTBefore they notice, if you can. A client who discovers the... Communicating During an Outage Telling people.WHY IT MATTERSSilence is worse than bad news.People assume the worst and contact... Communicating Price and Value to Clients Explaining what they are paying for.THE PROBLEMHosting looks like a commodity. A client comparing... Comparing Plans Before You Order Read plan comparisons for the figures that will actually constrain you.WHAT ACTUALLY... Compiler Construction Turning source into executable code.WHAT THE STAGES ARELexical analysis: source into... Configuration and Documentation Management Knowing how things are set up.WHAT TO DOCUMENTWhat systems exist How they are configured How they... Connecting to Your VPS Over SSH Getting a command line on your server.FROM MACOS OR LINUXOpen a terminal and connect using the... Console Access and Remote Control Reaching equipment directly.WHAT CONSOLE ACCESS PROVIDESThe equipment's own display and keyboard,... Cybersecurity Automation Defending at machine speed.WHY IT IS NECESSARYAttacks are automated, and manual response cannot... Data Centre Networking: Everything That Matters, Briefly The summary.MODERN DESIGNS OPTIMISE FOR TRAFFIC BETWEEN MACHINES, NOT IN AND OUTMeasure actual... Data Centre Technology: Everything That Matters, Briefly The whole category in one page.WHAT YOU ARE ACTUALLY BUYING WITH HOSTINGThe facility as much as... Database and Data Replication Keeping copies consistent.WHAT REPLICATION DOESMaintains copies of data on several systems.WHAT... Database Design for Backend Applications Structuring data.WHAT TO ESTABLISHWhat entities exist How they relate What must be unique What... Database Errors in Applications Connection and query failures.ERROR ESTABLISHING A DATABASE CONNECTIONThe credentials in the... Declaring Infrastructure in Version Control Declaring infrastructure in files.WHAT IT MEANSInfrastructure defined in files, versioned,... Delivering Bad News Outages, data loss and difficult answers.WHEN THIS ARISESAn outage Data that cannot be recovered... Delivering Commands to Devices Sending instructions.WHAT MAKES IT HARDER THAN SENDING DATAThe device may be asleep,... Delivery and Caching: Everything That Matters, Briefly The summary.A LOW CACHE HIT RATE MEANS THE DELIVERY NETWORK IS ACHIEVING LITTLEQuery strings... Deploying .NET Applications Getting applications running.WHAT HOSTING OPTIONS EXISTA managed application platform Containers... Deploying Without Downtime Avoiding a broken site during deployment.THE PROBLEMA deployment that copies files one at a time... Designing for Intermittent Connectivity Systems that survive disconnection.WHAT TO ASSUMEConnectivity is intermittent, not... Designing for Keyboard Use Without a mouse.WHO USES A KEYBOARDPeople who cannot use a pointer People using assistive... Designing for Reliability Systems that keep working.WHAT AVAILABILITY MEANSThe proportion of time a system is usable.WHAT... Designing the Core Loop The repeated activity.WHAT TO IDENTIFYWhat the player does most often.WHAT TO ENSURE ABOUT ITIt... Development Practices That Prevent Problems Habits that reduce the number of bad afternoons.VERSION CONTROL EVERYTHINGCode, configuration... Diagnosing Database Connection Problems Working through the causes.THE ERRORError establishing a database connection, or access denied,... DNS Architecture: Everything That Matters, Briefly The summary.PROPAGATION IS CACHES EXPIRING, NOT DATA SPREADINGThere is nothing to accelerate.... DNS Considerations When You Cannot Reach the Registrar Losing access to domain control.THE SITUATIONSForgotten credentials with an unreachable contact... DNSSEC Explained Signing DNS responses.WHAT IT DOESCryptographically signs DNS records so a resolver can verify... Documentation: Everything That Matters, Briefly The summary.DOCUMENT WHAT THE CODE CANNOT ANSWERWhy it was done that way, what was rejected, what... Documenting for Operations What the people running it need.WHAT THEY NEED TO KNOWHow to deploy it How to roll it back How to... Documenting Network and Infrastructure Estates Recording what exists and why.WHAT TO DOCUMENTWhat systems exist, and what each is for How they... Domain Contact Details and Why They Matter A domain carries its own contact records at the registry, separate from your Client Area... Environmental and Sustainability Considerations Energy and impact.WHAT DATA CENTRES CONSUMESubstantial electricity, continuously Water, in some... Error 523 and 524: Unreachable and Timeout Two related failures.ERROR 523: ORIGIN IS UNREACHABLECloudflare could not route to the address in... Error establishing a database connection The application could not reach its database.WHAT IT MEANSThe credentials are wrong, the user... Fatal error: Maximum execution time exceeded The script ran longer than permitted.WHAT IT MEANSPHP stopped a script that exceeded its time... Finding Your Login Details After Ordering Where everything is.YOUR WELCOME EMAILSent after your service is set up. It contains:Your cPanel... Formatters, Linters and Static Analysis Automated quality checks.WHAT A FORMATTER DOESApplies consistent formatting automatically.WHAT... Getting Support for a VPS What we help with, and what is yours.WITH AN UNMANAGED VPSWe are responsible for the... Getting Testimonials and Referrals Making satisfied clients useful.WHEN TO ASKAfter you resolved something for them. That is when... Handling a Server Incident When something breaks.THE ORDEREstablish what is affectedContain, if something is actively... Handling Angry Clients Difficult conversations.WHAT TO DO FIRSTLet them finish Acknowledge the problem specifically Do... Handling Delivery Problems Things go wrong in transit. How you handle it decides whether the customer returns.THE COMMON... Handling Disconnection Operating without a network.WHAT TO ASSUMEConnectivity is intermittent.WHAT THE DEVICE MUST... Handling Failed Deliveries When the parcel does not arrive.WHY DELIVERIES FAILNobody available Wrong or incomplete address... Handling Production Incidents When something breaks.WHAT TO DO FIRSTEstablish scope: what is affected, and how many.WHAT TO DO... Healthcare Practice Systems Systems for clinical settings.WHAT THEY MANAGEPatient records Appointments Clinical notes... High Availability and Recovery: Everything That Matters, Briefly The summary.A PASSIVE NODE THAT HAS NEVER SERVED MAY NOT WORK WHEN NEEDEDTest failover... Hospitality and Restaurant Systems Systems for food service and accommodation.WHAT RESTAURANT SYSTEMS MANAGEOrders, by table or... Hosting and Infrastructure for This Sector Serving digital asset businesses.WHAT SUCH CUSTOMERS TYPICALLY NEEDNodes, requiring substantial... How to Buy If Your Current Host Is Unreachable Moving away from a provider you cannot contact.THE SITUATIONYour current host is unresponsive, or... How to Buy Site and Server Monitoring Knowing when something is down.WHAT IT DOESChecks your site at intervals and alerts you when it... HSTS and Minimum TLS Version Stricter encryption settings.HSTSTells browsers to use https for your domain for a stated period,... Hybrid Identity and Directory Synchronisation Connecting on-premises to the cloud.WHAT SYNCHRONISATION PROVIDESAccounts from an on-premises... I Lost Access to My Hosting Account Locked out entirely.THE SITUATIONSForgotten password with an unreachable registered email The... Identity, Privacy and Security: Everything That Matters, Briefly The summary.IDENTIFICATION, AUTHENTICATION AND AUTHORISATION ARE THREE DIFFERENT THINGSConflating... Incident Response for Payment Systems When something goes wrong with money.WHAT MAKES IT DIFFERENTCustomers are affected financially,... Industrial IoT Connected manufacturing and process industries.WHAT IT MONITORSMachine condition: vibration,... Industry Systems: Everything That Matters, Briefly The summary.OFFLINE OPERATION IS NOT OPTIONAL IN RETAIL, FIELD SERVICE OR HOSPITALITYA shop that... Infrastructure Incident Response When something breaks.WHAT TO DO FIRSTEstablish scope: what is affected, and who.WHAT TO DO... Infrastructure Monitoring and Alerting Knowing the state of everything.WHAT TO MONITORAvailability, from outsideCapacity: processor,... Ingesting Device Data Receiving at volume.WHAT THE INGESTION PATH MUST DOAuthenticate the device Accept the message... Inside the Data Hall: Everything That Matters, Briefly The summary.PLAN THE RACK BEFORE INSTALLING ANYTHINGHeavier equipment lower, nothing obstructing... Interaction and Polish: Everything That Matters, Briefly The summary.USE ESTABLISHED LIBRARIES FOR DIALOGS, MENUS AND SELECTSFocus trapped and restored,... Internet and Advanced Infrastructure: Everything That Matters, Briefly The whole category in one page.ROUTING IS POLICY BEFORE IT IS GEOGRAPHYThe commercially preferred... IoT Connectivity: Everything That Matters, Briefly The summary.ESTABLISH THE DATA REQUIREMENT BEFORE CHOOSING A TECHNOLOGYHow many bytes, how often.... IoT Software: Everything That Matters, Briefly The summary.ABSTRACT HARDWARE SO LOGIC CAN BE TESTED WITHOUT ITHardware changes during a... IP Blocking and Your Own Address The firewall blocks addresses that behave suspiciously, and sometimes that is yours.WHY YOU MIGHT... Keeping Track of Renewal Dates Most avoidable outages come down to a date nobody was watching.WHERE THE DATES AREServices >... Keeping Trading When Systems Fail Operating without your usual tools.WHAT TO PREPAREA way to take enquiries without the website A... Keeping Your Business Running When Something Breaks Continuity for a small online business.THE QUESTIONSWhat does the business lose per day if the... Knowing When to Escalate to Us Working with your host.WHEN TO ESCALATEServer-level problems affecting several accounts Anything... Layout That Works When Zoomed Surviving enlargement.THE REQUIREMENTContent must remain usable when enlarged to 200 per cent,... Listing a Domain Held Elsewhere External domains.WHAT THIS COVERSNames registered with another provider that you want to sell... Load Balancing and High Availability Basics Keeping a service running when one machine fails.THE CONCEPTSLoad balancing distributes requests... Load Balancing and Redundancy Spreading and duplicating.WHAT LOAD BALANCING ISDistributing requests across several... Load Balancing Fundamentals Distributing traffic.WHAT IT DOESDistributes requests across several servers, and stops sending... Maintenance and Testing Schedules Preventive work.WHAT REQUIRES REGULAR MAINTENANCEGenerators Uninterruptible supplies and their... Managing Batteries and Power Portable devices.WHAT SHORTENS BATTERY LIFEHeat Being kept permanently at full charge Repeated... Managing Domains and Certificates Addresses and encryption.WHAT TO KEEP TRACK OFDomain expiry Certificate expiry Where DNS is... Managing Multiple Payment Providers Redundancy and routing.WHY MORE THAN ONEOutages Different method coverage Cost differences... Managing Vendors and Dependencies Services your product relies on.WHAT TO MAINTAINA list of every service, what it does, what it... Managing Visitors and Contractors People who are not staff.WHAT TO REQUIREAdvance notification Identity verification on arrival A... Microsoft Technology: Everything That Matters, Briefly The whole category in one page.IDENTITY CONNECTS EVERYTHINGAlmost every product authenticates... Migrating Between Facilities Moving your hosting.WHAT TO ESTABLISH FIRSTWhat must move What depends on what How much downtime... Migrating Without Downtime Downtime during a move is avoidable with sequencing rather than luck.THE PRINCIPLENever take... Minimising Downtime During a Release Minimising interruption.WHAT CAUSES DOWNTIMEFiles being replaced while requests arrive Database... Mobile UI and UX: Everything That Matters, Briefly The summary.PRIMARY ACTIONS BELONG LOW AND CENTRAL, WITHIN THUMB REACHNot in top corners. And... Monitoring Application Performance Knowing how the site actually performs.WHAT TO MEASUREServer response time, which reflects your... Monitoring Availability Knowing when something is down.WHAT TO MONITORWhether your site responds Whether mail is accepted... Monitoring Client Sites Knowing before they tell you.WHAT TO MONITORWhether each site responds Whether it responds... Monitoring Network Infrastructure Watching the fabric.WHAT TO MONITORLink status and utilisation Error, discard and retransmission... Monitoring Your VPS Knowing the state of your server before someone else tells you.WHAT TO MONITORAvailability: is... Moving a Live Site With No Downtime The careful approach.THE PRINCIPLEHave the new server fully working before anyone is directed at... Moving Your Store to a Bigger Plan or VPS When and how to upgrade.SIGNS YOU GENUINELY NEED MOREConsistent resource limit warnings after... My Domain Expired and the Site Is Gone The site is fine and unreachable.WHAT HAPPENEDThe domain expired, so it no longer resolves. The... My Hosting Provider Had an Outage When the problem is ours.WHAT TO CHECK FIRSTClient Area > Announcements and Network Issues. If... Nameservers and Delegation Who is authoritative.WHAT NAMESERVERS AREThe servers holding a domain's records.WHERE THEY ARE... Networking for Cloud Services When your systems are elsewhere.WHAT CHANGESYour connection becomes critical.Everything stops... Networking for Payment and Point of Sale Taking payments reliably.WHAT MATTERSReliability above everything.A payment system that fails... Networks Compared: Everything That Matters, Briefly The summary.ELECTRICITY COST DOMINATES MINING ECONOMICSWhich makes mining major networks unviable... Offering Service Level Commitments Promising availability.WHAT A COMMITMENT STATESA target availability, and what happens if it is... Offering Staging Environments Selling safety.WHAT IT ISA copy of a client's site where changes can be tested before going... Operating DNSSEC Safely Avoiding self-inflicted outages.WHAT CAUSES MOST DNSSEC OUTAGESExpired signatures Key rollover... Operational Resilience Staying available.WHY IT MATTERS MORE IN FINANCIAL SERVICESCustomers cannot access their money,... Operations and Standards: Everything That Matters, Briefly The summary.BACKUP SYSTEMS FAIL MORE OFTEN THAN ANYONE EXPECTS, BECAUSE THEY ARE RARELY... Ordering an Upgrade to an Existing Service Upgrades are ordered from within the service, not as a new order.HOWServices > My Services... Ordering for a High-Traffic or Business-Critical Site Some sites warrant more care at the ordering stage.WHAT TO TELL US BEFORE ORDERINGExpected... Ordering Priority or Managed Support Where enhanced support options are offered, this is what to consider.WHAT STANDARD SUPPORT... Out-of-Band Management Access independent of the network.WHAT IT ISA separate path to manage equipment, independent of... Pagination and Infinite Scrolling Presenting long lists.WHAT PAGINATION PROVIDESA sense of scale The ability to return to a... Payment Fraud and Prevention Protecting the business.WHAT HAPPENSStolen cards used for orders Card testing, where small... Platforms and Data: Everything That Matters, Briefly The summary.CALCULATE COST PER DEVICE PER YEAR AT PROJECTED SCALEPer-message charges accumulate... Playbook: Migration Requests Bringing a site in.ESTABLISH FIRSTWhere it is now What it is built on Whether they have access to... Playbook: My Website Is Down The most urgent request.FIRST, ESTABLISHIs it actually down, or down for them? What error do they... Power and Connectivity Continuity Local operational risks.WHAT AFFECTS BUSINESSES HEREPower interruptions Fuel availability... Power and Connectivity Realities Planning around practical constraints.THE SITUATIONPower interruptions and variable connectivity... Power and Deployment: Everything That Matters, Briefly The summary.RADIO TRANSMISSION DOMINATES POWER CONSUMPTIONReducing transmissions extends life... Power Sources and Energy Harvesting Where devices get energy.WHAT OPTIONS EXISTPrimary batteries, not rechargeable Rechargeable... Power Systems: Everything That Matters, Briefly The summary.THE POWER PATH HAS MANY STAGESSupply, switchgear, uninterruptible supplies,... Predictive Maintenance Anticipating equipment failure.WHAT IT PREDICTSThat equipment will fail within a window, or its... Presenting Yourself Professionally Small things that matter.EMAIL ON YOUR OWN DOMAINA hosting provider emailing from a free mail... Preventing Reputation Problems Avoiding complaints.WHERE COMPLAINTS COME FROMExpectations not met Poor communication Problems... Processing Device Data Turning readings into information.WHAT PROCESSING TYPICALLY DOESConverts raw values to meaningful... Progressive Web Applications Web applications with application-like behaviour.WHAT THEY PROVIDEInstallation to the device... Protecting Your Domain and Online Identity Your most valuable digital asset.WHY IT MATTERS MOSTThe domain carries your website, your email... Protocols and Transport: Everything That Matters, Briefly The summary.EACH HTTP VERSION ADDRESSED THE BOTTLENECK THE LAST ONE EXPOSEDVersion two removed... Providers and Integration: Everything That Matters, Briefly The summary.READ THE TERMS ON SUSPENSION AND FUND HOLDS BEFORE ANYTHING ELSEWithheld settlement... Questions to Ask a Hosting or Facility Provider Before committing.ABOUT THE FACILITYWhere is it, precisely? Who operates it? What certifications... Reading Network Error Messages What they tell you.CONNECTION REFUSEDSomething answered and declined the connection.The host is... Reducing Failed Payments Getting more transactions through.WHY PAYMENTS FAIL HERECards restricted for online transactions... Reference: What to Check for Each Symptom Quick lookup.NO CONNECTIVITY AT ALLLink, then address, then gateway.SOME SITES WORK, OTHERS DO... Reliability and Uptime Keeping the service available.WHY IT MATTERS MORE THAN IN OTHER SOFTWARECustomers pay... Reseller Billing: How It Works If you hold a reseller account, there are two billing relationships and it is important to keep... Reserve Prices Explained For buyers and sellers.WHAT A RESERVE ISThe minimum a seller will accept.FOR BUYERSIf bidding... Restarting Services Safely Knowing what a restart does before you do it.RELOAD VERSUS RESTARTReload re-reads configuration... Retail and Point of Sale Systems Systems for selling in person.WHAT THEY MUST DOProcess sales quickly Handle several payment... Reviewing Instead of Testing Finding defects without execution.WHAT STATIC TECHNIQUES AREExamining artefacts without running... Rewards Program Notifications Programme communications go to the address on your account.WHAT YOU MAY RECEIVEConfirmation of... Rollups and Scaling Networks Where activity is moving.WHAT A ROLLUP DOESExecutes transactions away from the main network,... Running a Node Participating in verification.WHAT RUNNING ONE PROVIDESIndependent verification, trusting nobody... Running PowerDNS A database-backed nameserver.WHAT DISTINGUISHES ITSeparation of the authoritative server, the... Scheduled Maintenance and How We Notify You Servers need occasional maintenance: security patches, kernel updates, control panel upgrades and... Scheduling and Dependencies When things run.WHAT TIME-BASED SCHEDULING ASSUMESThat inputs are ready by the scheduled time.WHY... Securing Data in Transit and at Rest Protecting information.WHAT TO USE FOR EVERY CONNECTIONEncryption, throughout, without... Securing Your Hosting and Domain Accounts The accounts that control everything.WHY THEY MATTER MOSTControl of your hosting means control of... Securing Your Online Shop Against Fraud Shop-specific controls.WHAT TO ENABLEYour gateway's fraud screening Address verification, where... Service Level Agreements for Facilities What is committed.WHAT IS TYPICALLY COMMITTEDPower availability Environmental conditions within a... Setting Boundaries and Avoiding Burnout The part nobody plans for.THE PROBLEMHosting is a business where something can break at any hour,... Setting Recovery Expectations How quickly you need to be back.THE TWO QUESTIONSHow long can you afford to be down? How much... Setting Support Expectations What clients can expect from you.WHAT TO STATE CLEARLYYour support hours How to reach you... Static Analysis and Code Quality Checks Finding problems without running code.WHAT STATIC ANALYSIS DOESExamines code and reports likely... Status Pages and Transparency Communicating about availability.WHAT A STATUS PAGE PROVIDESA single place customers check before... Storage Infrastructure: Everything That Matters, Briefly The summary.RAID IS NOT A BACKUPIt protects against drive failure, not deletion, corruption,... Storage Performance and Capacity Planning Sizing and measuring.WHAT TO MEASUREOperations per second Throughput Latency Queue depthWHAT... Structured Cabling Physical connectivity.WHAT IT ISA planned, documented cabling system rather than ad hoc... Support and Operations Terms Working with your host.TICKETA logged support request with a reference.SLAA service level... Switches, Access Points and Extenders Network equipment explained.A SWITCHConnects wired devices on the same local network.Adds ports.... Symptom: The Site Loads for Others but Not for Me A local problem.WHAT IT USUALLY ISBrowser cache DNS cache on your device or network Your network... System Design: Everything That Matters, Briefly The summary.ESTABLISH REQUIREMENTS AND MAGNITUDES BEFORE PROPOSING A DESIGNRough numbers are what... Telling the Difference Between a Site Problem and a Server Problem Most outages are site-level. Knowing which you are facing saves a great deal of time.SIGNS IT IS... Testing Accessibility Compliance Verifying against standards.WHAT STANDARDS EXISTPublished guidelines defining success criteria at... Testing Background Jobs and Scheduled Work Verifying what runs unattended.WHY IT IS NEGLECTEDIt has no interface, and failures are... Testing Databases and Data Integrity Verifying stored information.WHAT TO TESTData written matches what was submitted Constraints are... Testing Interfaces and Applications: Everything That Matters, Briefly The summary.AUTHORISATION ON INDIVIDUAL RECORDS IS THE COMMONEST SERIOUS INTERFACE... Testing Upgrades and Migrations Verifying change over versions.WHY IT IS THE MOST NEGLECTED TESTINGNew installations are tested;... The Google Ecosystem: Everything That Matters, Briefly The summary.ALMOST EVERYTHING IS SCOPED TO A PROJECTGet the project structure wrong and unwinding... Transferring a Domain to ZillionKingHost Moving a domain from another registrar.BEFORE STARTINGAt the current registrar:Unlock the domain... Trying to access array offset on value of type null A value was expected and was not there.WHAT IT MEANSThe code expected an array or object and... Understanding Availability and Uptime What continuous operation means.WHAT UPTIME MEASURESThe proportion of time a service is... Understanding Cloud Services Software and storage elsewhere.WHAT IT MEANSUsing software and storage that runs on someone... Understanding Data Centres: Everything That Matters, Briefly The summary.WHAT A DATA CENTRE PROVIDESContinuous power, controlled cooling, multiple network... Understanding Digital Twins Virtual representations of physical things.WHAT A DIGITAL TWIN ISA model of a physical asset,... Understanding DNS Error Messages What lookup tools report.NXDOMAINThe domain does not exist, according to the authoritative... Understanding DNSSEC Authenticating DNS responses.WHAT PROBLEM IT SOLVESDNS responses can be forged, and there is... Understanding Energy Costs What power costs to run.WHAT DRIVES COSTEnergy consumed by equipment Energy consumed by cooling... Understanding Generators Extended backup power.WHAT THEY DOSupply the facility when mains power is unavailable, for as... Understanding Protocols and Ports How services communicate.WHAT A PROTOCOL ISAn agreed set of rules for exchanging data.WHAT A PORT... Understanding Quotas and Rate Limits Working within platform limits.WHAT QUOTAS ARELimits on how much of a service you may... Understanding Server Maintenance and Incidents Planning around them.SCHEDULED MAINTENANCEAnnounced in advance through the Client Area.Check... Understanding the Dashboard The dashboard is designed to answer "is anything wrong" at a glance.WHAT IT SHOWSActive services... Understanding Ticket Response Times What to expect, and what makes a difference.WHAT AFFECTS SPEEDThe department. Technical issues go... Understanding Uptime Uptime is the percentage of time a service is reachable. It is a useful measure, but it is... Upgrading or Downgrading and How Proration Works Plans can be changed at any time, and the system calculates the price difference for you.MAKING... Upgrading or Downgrading Your Plan Plans can be changed at any time from the Client Area.HOW TO REQUEST A CHANGELog in at... Using AI With Power Interruptions Working around outages.THE PRACTICAL MEASURESCompose longer requests in a note first, then paste... Using WHM's Account Listing and Search Once you pass a dozen accounts, finding the right one quickly matters.THE MAIN TOOLWHM >... Warehouse Management Systems Controlling physical storage.WHAT THEY MANAGEReceiving Putaway and locations Picking Packing and... Website went down with no error Unavailable, nothing logged.THE THREE CHECKSDoes cPanel load? If yes, the server is running. Does... What a Domain Name Is and How It Works A domain name is the address people type to reach your site. It is not the site itself, and it is... What Actually Keeps Customers The things that matter.WHAT CUSTOMERS VALUEDoing what you said you would Being reachable... What DNS Actually Does Turning a name into an address.THE PROBLEM IT SOLVESComputers connect to numeric addresses.... What to Do When Your Website Is Down Work through this quickly before opening a ticket. Several of these are resolved in under a... What to Monitor Deciding what matters.WHAT TO MONITOR FIRSTWhether the service works, from outside.WHY FROM... What to Send When Something Breaks Incident communication.THE FIRST MESSAGESent as soon as you know, before you have the answer."I... What to Tell Customers During an Incident Communication while recovering.WHY IT MATTERSCustomers forgive outages. They do not forgive... What You Are Responsible For as a Reseller Being clear about the boundary prevents difficult conversations later.WE HANDLEServer hardware,... When a Deployment Breaks the Site Recovering quickly.FIRST, RESTORE SERVICERoll back. Check out the previous commit, or switch the... When the Problem Is Not Your Network External faults.WHAT SUGGESTS AN EXTERNAL PROBLEMOne destination affected while everything else... When to Ask Us and When to Ask Cloudflare Directing the question correctly.ASK USThe site is unreachable and you want to know whether our... Where Reseller Businesses Go Wrong The patterns that cause failure.UNDERPRICING AT THE STARTThe single most common cause. Difficult... Where to Check for Known Issues Before opening a ticket about an outage, check whether we already know.CLIENT AREA... Why a Domain Transfer Was Rejected Transfers fail for a small set of reasons, all identifiable.THE USUAL CAUSESThe domain is locked... Why You Cannot Reach Your Own Site (Firewall Blocks) If your site loads for everyone else but not for you, your IP address has almost certainly been... Windows Server and Active Directory: Everything That Matters, Briefly The summary.DOMAIN MEMBERS MUST USE INTERNAL DNSPointing them at public servers breaks... Working Under Pressure in IT Incidents and demand.WHAT PRESSURE LOOKS LIKE IN ITA major outage Many simultaneous requests An... Working With Vendors and Suppliers External support.WHEN TO INVOLVE THEMThe fault is in their product It exceeds your access or... Your Server Is Unreachable: What to Check Nothing responds. Working out why.FIRST, ESTABLISH SCOPECan you ping the address? A reply means...
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