Prometheus 2.0 gets a raft of enhancements

More efficient time-series data storage format, better handling of stale event data and DB snapshot back-ups for container monitor

Prometheus, the open source monitoring system for Docker-style containers running in cloud architectures, has formally released a 2.0 version with major architectural changes to improve its performance.

Among the changes that have landed since the release of version 1.6 earlier this year:

  • An entirely new storage format for the data accumulated by Prometheus
  • A new way for Prometheus to handle “staleness,” i.e. problems resulting when data reported by Prometheus doesn’t match the actual state of the cluster
  • A method for taking efficient snapshot backups of the entire database

Most of the changes shouldn’t force experienced Prometheus users to retool their environments. The new features are meant to work under the hood, without significantly altering workflow, although there are a few breaking changes.

 

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Time-series DB storage format
Under the hood, Prometheus is a time-series database—a system for gathering statistics about running containers and storing them in a way that is indexed by timestamps. Because time-series data arrives at high speed and from many sources, it is hard to aggregate properly. Writing the data to disk becomes a major bottleneck.

Prometheus 2.0 addresses this by partitioning the data by ranges of time, rather than by data source. The result is far less CPU and disk usage, more manageable latency for queries, and a better mechanism for mopping up data that isn’t needed anymore.

Again, the vast majority of Prometheus deployments will not need to do anything to leverage these improvements, other than deploy Prometheus 2.0.

Stale data handling
Another problem Prometheus users have observed is how the system has trouble handling stale data. For instance, users sometimes get bombarded with alerts about a service being down, even after that service has already come back up. Another problem is if a resource disappears from monitoring and then reappears within a certain timeframe, it can end up being counted twice and produce misleading statistics.

Prometheus 2.0 deals with this by having more explicit rules for handling events from sources that have gone stale. The logic for handling this is surprisingly complex, but the end user doesn’t have to deal with the vast majority of the details.

Full DB snapshot back-ups
The new storage engine in Prometheus 2.0 makes it possible to take efficient point-in-time snapshots of the database. Triggering a snapshot is as simple as hitting a specific Prometheus API endpoint.

According to Prometheus developer Fabian Reinartz, those snapshots are small—a fractional percentage of the size of the whole database—and can be copied somewhere for safekeeping. “On disk failure or other scenarios, new Prometheus servers can be started with the snapshot backup with minimal data loss,” says Reinartz.

Precompiled binaries and Docker images are available for download from the official Prometheus project page. Source code for the project, and all its related subprojects, is available on GitHub.

 

 

 

 

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'string') { return '+1 000 000 0000'; // Default US placeholder } var mockPlaceholders = [ { countryCode: 'US', placeholder: '+1 000 000 0000', helpText: 'Include the US country code +1 before the phone number', }, { countryCode: 'GB', placeholder: '+44 0000 000000', helpText: 'Include the GB country code +44 before the phone number', }, { countryCode: 'CA', placeholder: '+1 000 000 0000', helpText: 'Include the CA country code +1 before the phone number', }, { countryCode: 'AU', placeholder: '+61 000 000 000', helpText: 'Include the AU country code +61 before the phone number', }, { countryCode: 'DE', placeholder: '+49 000 0000000', helpText: 'Fügen Sie vor der Telefonnummer die DE-Ländervorwahl +49 ein', }, { countryCode: 'FR', placeholder: '+33 0 00 00 00 00', helpText: 'Incluez le code pays FR +33 avant le numéro de téléphone', }, { countryCode: 'ES', placeholder: '+34 000 000 000', helpText: 'Incluya el código de país ES +34 antes del número de teléfono', }, { countryCode: 'NL', placeholder: '+31 0 00000000', helpText: 'Voeg de NL-landcode +31 toe vóór het telefoonnummer', }, { countryCode: 'BE', placeholder: '+32 000 00 00 00', helpText: 'Incluez le code pays BE +32 avant le numéro de téléphone', }, { countryCode: 'CH', placeholder: '+41 00 000 00 00', helpText: 'Fügen Sie vor der Telefonnummer die CH-Ländervorwahl +41 ein', }, { countryCode: 'AT', placeholder: '+43 000 000 0000', helpText: 'Fügen Sie vor der Telefonnummer die AT-Ländervorwahl +43 ein', }, { countryCode: 'IE', placeholder: '+353 00 000 0000', helpText: 'Include the IE country code +353 before the phone number', }, { countryCode: 'IT', placeholder: '+39 000 000 0000', helpText: 'Includere il prefisso internazionale IT +39 prima del numero di telefono', }, { countryCode: 'NO', placeholder: '+47 000 00 000', helpText: 'Inkluder NO landskode +47 før telefonnummeret', }, { countryCode: 'SE', placeholder: '+46 00 000 00 00', helpText: 'Inkludera SE landskod +46 före telefonnumret', }, { countryCode: 'DK', placeholder: '+45 00 00 00 00', helpText: 'Inkluder DK landekode +45 før telefonnummeret', }, { countryCode: 'FI', placeholder: '+358 00 000 0000', helpText: 'Sisällytä FI-maakoodi +358 ennen puhelinnumeroa', }, { countryCode: 'EE', placeholder: '+372 0000 0000', helpText: 'Lisage EE riigikood +372 telefoninumbri ette', }, { countryCode: 'PL', placeholder: '+48 000 000 000', helpText: 'Podaj numer kierunkowy PL +48 przed numerem telefonu', }, { countryCode: 'SK', placeholder: '+421 000 000 000', helpText: 'Pred telefónne číslo uveďte kód krajiny SK +421', }, { countryCode: 'LV', placeholder: '+371 0000 0000', helpText: 'Iekļaujiet LV valsts kodu +371 pirms tālruņa numura', }, { countryCode: 'LT', placeholder: '+370 0000 0000', helpText: 'Įtraukite LT šalies kodą +370 prieš telefono numerį', }, { countryCode: 'GR', placeholder: '+30 000 000 0000', helpText: 'Συμπεριλάβετε τον κωδικό χώρας GR +30 πριν από τον αριθμό τηλεφώνου', }, { countryCode: 'PT', placeholder: '+351 000 000 000', helpText: 'Inclua o código de país PT +351 antes do número de telefone', }, { countryCode: 'HR', placeholder: '+385 00 000 0000', helpText: 'Uključite HR pozivni broj države +385 prije telefonskog broja', }, { countryCode: 'SI', placeholder: '+386 00 000 000', helpText: 'Vključite SI kodo države +386 pred telefonsko številko', }, { countryCode: 'IS', placeholder: '+354 000 0000', helpText: 'Láttu IS landsnúmer +354 fylgja á undan símanúmerinu', }, { countryCode: 'LU', placeholder: '+352 000 000 000', helpText: 'Incluez le code pays LU +352 avant le numéro de téléphone', }, { countryCode: 'MC', placeholder: '+377 00 00 00 00', helpText: 'Incluez le code pays MC +377 avant le numéro de téléphone', }, { countryCode: 'AD', placeholder: '+376 000 000', helpText: 'Incloeu el codi de país AD +376 abans del número de telèfon', }, { countryCode: 'JE', placeholder: '+44 0000 000000', helpText: 'Include the JE country code +44 before the phone number', }, { countryCode: 'IM', 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phoneInput.placeholder = placeholder; } } function updateCountryCodeInstruction(countryCode, fieldName) { updatePlaceholder(countryCode, fieldName); } function getDefaultHelpText(countryCode) { var mockPlaceholders = [ { countryCode: 'US', placeholder: '+1 000 000 0000', helpText: 'Include the US country code +1 before the phone number', }, { countryCode: 'GB', placeholder: '+44 0000 000000', helpText: 'Include the GB country code +44 before the phone number', }, { countryCode: 'CA', placeholder: '+1 000 000 0000', helpText: 'Include the CA country code +1 before the phone number', }, { countryCode: 'AU', placeholder: '+61 000 000 000', helpText: 'Include the AU country code +61 before the phone number', }, { countryCode: 'DE', placeholder: '+49 000 0000000', helpText: 'Fügen Sie vor der Telefonnummer die DE-Ländervorwahl +49 ein', }, { countryCode: 'FR', placeholder: '+33 0 00 00 00 00', helpText: 'Incluez le code pays FR +33 avant le numéro de téléphone', }, { countryCode: 'ES', placeholder: '+34 000 000 000', helpText: 'Incluya el código de país ES +34 antes del número de teléfono', }, { countryCode: 'NL', placeholder: '+31 0 00000000', helpText: 'Voeg de NL-landcode +31 toe vóór het telefoonnummer', }, { countryCode: 'BE', placeholder: '+32 000 00 00 00', helpText: 'Incluez le code pays BE +32 avant le numéro de téléphone', }, { countryCode: 'CH', placeholder: '+41 00 000 00 00', helpText: 'Fügen Sie vor der Telefonnummer die CH-Ländervorwahl +41 ein', }, { countryCode: 'AT', placeholder: '+43 000 000 0000', helpText: 'Fügen Sie vor der Telefonnummer die AT-Ländervorwahl +43 ein', }, { countryCode: 'IE', placeholder: '+353 00 000 0000', helpText: 'Include the IE country code +353 before the phone number', }, { countryCode: 'IT', placeholder: '+39 000 000 0000', helpText: 'Includere il prefisso internazionale IT +39 prima del numero di telefono', }, { countryCode: 'NO', placeholder: '+47 000 00 000', helpText: 'Inkluder NO landskode +47 før telefonnummeret', }, { countryCode: 'SE', placeholder: '+46 00 000 00 00', helpText: 'Inkludera SE landskod +46 före telefonnumret', }, { countryCode: 'DK', placeholder: '+45 00 00 00 00', helpText: 'Inkluder DK landekode +45 før telefonnummeret', }, { countryCode: 'FI', placeholder: '+358 00 000 0000', helpText: 'Sisällytä FI-maakoodi +358 ennen puhelinnumeroa', }, { countryCode: 'EE', placeholder: '+372 0000 0000', helpText: 'Lisage EE riigikood +372 telefoninumbri ette', }, { countryCode: 'PL', placeholder: '+48 000 000 000', helpText: 'Podaj numer kierunkowy PL +48 przed numerem telefonu', }, { countryCode: 'SK', placeholder: '+421 000 000 000', helpText: 'Pred telefónne číslo uveďte kód krajiny SK +421', }, { countryCode: 'LV', placeholder: '+371 0000 0000', helpText: 'Iekļaujiet LV valsts kodu +371 pirms tālruņa numura', }, { countryCode: 'LT', placeholder: '+370 0000 0000', helpText: 'Įtraukite LT šalies kodą +370 prieš telefono numerį', }, { countryCode: 'GR', placeholder: '+30 000 000 0000', helpText: 'Συμπεριλάβετε τον κωδικό χώρας GR +30 πριν από τον αριθμό τηλεφώνου', }, { countryCode: 'PT', placeholder: '+351 000 000 000', helpText: 'Inclua o código de país PT +351 antes do número de telefone', }, { countryCode: 'HR', placeholder: '+385 00 000 0000', helpText: 'Uključite HR pozivni broj države +385 prije telefonskog broja', }, { countryCode: 'SI', placeholder: '+386 00 000 000', helpText: 'Vključite SI kodo države +386 pred telefonsko številko', }, { countryCode: 'IS', placeholder: '+354 000 0000', helpText: 'Láttu IS landsnúmer +354 fylgja á undan símanúmerinu', }, { countryCode: 'LU', placeholder: '+352 000 000 000', helpText: 'Incluez le code pays LU +352 avant le numéro de téléphone', }, { countryCode: 'MC', placeholder: '+377 00 00 00 00', helpText: 'Incluez le code pays MC +377 avant le numéro de téléphone', }, { countryCode: 'AD', placeholder: '+376 000 000', helpText: 'Incloeu el codi de país AD +376 abans del número de telèfon', }, { countryCode: 'JE', placeholder: '+44 0000 000000', helpText: 'Include the JE country code +44 before the phone number', }, { countryCode: 'IM', placeholder: '+44 0000 000000', helpText: 'Include the IM country code +44 before the phone number', }, { countryCode: 'GG', placeholder: '+44 0000 000000', helpText: 'Include the GG country code +44 before the phone number', }, { countryCode: 'AL', placeholder: '+355 00 000 0000', helpText: 'Përfshini kodin e vendit AL +355 para numrit të telefonit', }, { countryCode: 'SM', placeholder: '+378 0000 000000', helpText: 'Includere il prefisso internazionale SM +378 prima del numero di telefono', }, { countryCode: 'FO', placeholder: '+298 000000', helpText: 'Inkluder FO landekode +298 før telefonnummeret', }, { countryCode: 'MT', placeholder: '+356 0000 0000', helpText: 'Include the MT country code +356 before the phone number', }, { countryCode: 'LI', placeholder: '+423 000 0000', helpText: 'Fügen Sie vor der Telefonnummer die LI-Ländervorwahl +423 ein', }, { countryCode: 'GI', placeholder: '+350 000 00000', helpText: 'Include the GI country code +350 before the phone number', }, { countryCode: 'MD', placeholder: '+373 00 000 000', helpText: 'Includeți codul de țară MD +373 înaintea numărului de telefon', }, { countryCode: 'HU', placeholder: '+36 00 000 0000', helpText: 'A telefonszám előtt adja meg a HU országkódot +36', }, { countryCode: 'NZ', placeholder: '+64 00 000 0000', helpText: 'Include the NZ country code +64 before the phone number', }, { countryCode: 'ME', placeholder: '+382 00 000 000', helpText: 'Uključite ME pozivni broj države +382 prije telefonskog broja', }, ]; if (!countryCode || typeof countryCode !== 'string') { return mockPlaceholders[0].helpText; } const selectedHelpText = mockPlaceholders.find(function(item) { return item && item.countryCode === countryCode; }); return selectedHelpText ? selectedHelpText.helpText : mockPlaceholders[0].helpText; } function setDefaultHelpText(countryCode) { const helpTextSpan = document.querySelector('#help-text'); if (!helpTextSpan) { return; } } function updateHelpTextCountryCode(countryCode, fieldName) { if (!countryCode || !fieldName) { return; } setDefaultHelpText(countryCode); } function initializeSmsPhoneDropdown(fieldName) { if (!fieldName || typeof fieldName !== 'string') { return; } const dropdown = document.querySelector('#country-select-' + fieldName); const displayFlag = document.querySelector('#flag-display-' + fieldName); if (!dropdown || !displayFlag) { return; } const smsPhoneData = window.MC?.smsPhoneData; if (smsPhoneData && smsPhoneData.programs && Array.isArray(smsPhoneData.programs)) { dropdown.innerHTML = generateDropdownOptions(smsPhoneData.programs); } const defaultProgram = getDefaultCountryProgram(smsPhoneData?.defaultCountryCode, smsPhoneData?.programs); if (defaultProgram && defaultProgram.countryCode) { dropdown.value = defaultProgram.countryCode; const flagSpan = displayFlag?.querySelector('#flag-emoji-' + fieldName); if 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: false; var shouldAppendCountryCode = smsNotRequiredRemoveCountryCodeEnabled ? isRequired : true; var phoneInput = document.querySelector('#mce-' + fieldName); if (phoneInput && defaultProgram.countryCallingCode && shouldAppendCountryCode) { phoneInput.value = defaultProgram.countryCallingCode; } displayFlag?.addEventListener('click', function(e) { dropdown.focus(); }); dropdown?.addEventListener('change', function() { const selectedCountry = this.value; if (!selectedCountry || typeof selectedCountry !== 'string') { return; } const flagSpan = displayFlag?.querySelector('#flag-emoji-' + fieldName); if (flagSpan) { flagSpan.textContent = getCountryUnicodeFlag(selectedCountry); flagSpan.setAttribute('aria-label', sanitizeHtml(selectedCountry) + ' flag'); } const selectedProgram = window.MC?.smsPhoneData?.programs.find(function(program) { return program && program.countryCode === selectedCountry; }); var smsNotRequiredRemoveCountryCodeEnabled = true; var smsField = Object.values({"EMAIL":{"name":"EMAIL","label":"Email Address","helper_text":"","type":"email","required":true,"audience_field_name":"Email Address","merge_id":0,"help_text_enabled":false,"enabled":true,"order":0,"field_type":"merge"},"FNAME":{"name":"FNAME","label":"First Name","helper_text":"","type":"text","required":false,"audience_field_name":"First Name","enabled":false,"order":null,"field_type":"merge","merge_id":1},"MMERGE2":{"name":"MMERGE2","label":"Second Name","helper_text":"","type":"text","required":false,"audience_field_name":"Second Name","enabled":false,"order":null,"field_type":"merge","merge_id":2},"MMERGE3":{"name":"MMERGE3","label":"Company Name","helper_text":"","type":"text","required":false,"audience_field_name":"Company Name","enabled":false,"order":null,"field_type":"merge","merge_id":3},"MMERGE4":{"name":"MMERGE4","label":"Job Title","helper_text":"","type":"text","required":false,"audience_field_name":"Job Title","enabled":false,"order":null,"field_type":"merge","merge_id":4},"SIGNUP":{"name":"SIGNUP","label":"Signup form location","helper_text":"","type":"text","required":false,"audience_field_name":"Signup form location","enabled":false,"order":null,"field_type":"merge","merge_id":5},"MMERGE6":{"name":"MMERGE6","label":"Image URL","helper_text":"","type":"imageurl","required":false,"audience_field_name":"Image URL","enabled":false,"order":null,"field_type":"merge","merge_id":6}}).find(function(f) { return f.name === fieldName && f.type === 'smsphone'; }); var isRequired = smsField ? smsField.required : false; var shouldAppendCountryCode = smsNotRequiredRemoveCountryCodeEnabled ? isRequired : true; var phoneInput = document.querySelector('#mce-' + fieldName); if (phoneInput && selectedProgram.countryCallingCode && shouldAppendCountryCode) { phoneInput.value = selectedProgram.countryCallingCode; } updateSmsLegalText(selectedCountry, fieldName); updatePlaceholder(selectedCountry, fieldName); updateCountryCodeInstruction(selectedCountry, fieldName); }); } document.addEventListener('DOMContentLoaded', function() { const smsPhoneFields = document.querySelectorAll('[id^="country-select-"]'); smsPhoneFields.forEach(function(dropdown) { const fieldName = dropdown?.id.replace('country-select-', ''); initializeSmsPhoneDropdown(fieldName); }); });

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