{"id":1721,"date":"2023-08-22T11:40:04","date_gmt":"2023-08-22T09:40:04","guid":{"rendered":"https:\/\/alessandromasciadri.com\/?p=1721"},"modified":"2023-08-22T11:45:16","modified_gmt":"2023-08-22T09:45:16","slug":"come-disabilitare-systemd-timesyncd-su-ubuntu","status":"publish","type":"post","link":"https:\/\/alessandromasciadri.com\/come-disabilitare-systemd-timesyncd-su-ubuntu\/","title":{"rendered":"Come disabilitare systemd-timesyncd su Ubuntu"},"content":{"rendered":"\t\t<div data-akihiro-type=\"ama-post\" data-akihiro-id=\"1721\" class=\"akihiro akihiro-1721\" data-akihiro-post-type=\"post\">\n\t\t\t\t<div class=\"akihiro-element akihiro-element-44150ff e-flex e-con-boxed e-con e-parent\" data-id=\"44150ff\" data-element_type=\"container\" data-e-type=\"container\" id=\"my-post\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"akihiro-element akihiro-element-cbcc039 akihiro-widget akihiro-widget-text-editor\" data-id=\"cbcc039\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Questa guida \u00e8 finalizzata alla disattivazione del servizio systemd-timesyncd sulle macchine Ubuntu. Di solito si sceglie di disabilitare questo servizio quando si vuole evitare la sincronizzazione del sistema con un time server via ntp.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-5be7405 akihiro-toc--minimized-on-tablet akihiro-widget akihiro-widget-table-of-contents\" data-id=\"5be7405\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;exclude_headings_by_selector&quot;:[],&quot;container&quot;:&quot;#my-post&quot;,&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;,&quot;h4&quot;,&quot;h5&quot;,&quot;h6&quot;],&quot;marker_view&quot;:&quot;numbers&quot;,&quot;no_headings_message&quot;:&quot;Non sono state trovate intestazioni in questa pagina.&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"akihiro-toc__header\">\n\t\t\t\t\t\t<h4 class=\"akihiro-toc__header-title\">\n\t\t\t\tTabella dei Contenuti\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"akihiro-toc__toggle-button akihiro-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"akihiro-toc__5be7405\" aria-expanded=\"true\" aria-label=\"Apri l&#039;indice dei contenuti\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"akihiro-toc__toggle-button akihiro-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"akihiro-toc__5be7405\" aria-expanded=\"true\" aria-label=\"Chiudi l&#039;indice dei contenuti\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"akihiro-toc__5be7405\" class=\"akihiro-toc__body\">\n\t\t\t<div class=\"akihiro-toc__spinner-container\">\n\t\t\t\t<svg class=\"akihiro-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-bf2b6cb akihiro-widget akihiro-widget-heading\" data-id=\"bf2b6cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t<h3 class=\"akihiro-heading-title akihiro-size-default\">Cos'\u00e8 systemd-timesyncd<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-9307832 akihiro-widget akihiro-widget-text-editor\" data-id=\"9307832\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Il servizio systemd-timesyncd \u00e8 presente sui sistemi Linux per sincronizzare via rete l&#8217;orologio di sistema. Sostanzialmente implemente un SNTP client. A differenza di implementazioni NTP pi\u00f9 complesse come chrony, systemd-timesyncd non si preoccupa dell&#8217;intera complessit\u00e0 NTP, ma si concentra solo sull&#8217;interrogazione dell&#8217;ora da un server remoto e sulla sincronizzazione dell&#8217;orologio locale con esso. Questo demone viene eseguito con privilegi minimi ed \u00e8 collegato a networkd per funzionare solo quando \u00e8 disponibile la connettivit\u00e0 di rete. Il demone salva l&#8217;orologio corrente su disco ogni volta che viene acquisita una nuova sincronizzazione NTP e la utilizza per eventualmente correggere l&#8217;orologio di sistema in anticipo all&#8217;avvio, in modo da adattarsi ai sistemi privi di RTC come Raspberry Pi o altri dispositivi embedded.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-b77a9bd akihiro-widget akihiro-widget-heading\" data-id=\"b77a9bd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t<h3 class=\"akihiro-heading-title akihiro-size-default\">Disattivare systemd-timesyncd<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-db8c5e4 akihiro-widget akihiro-widget-text-editor\" data-id=\"db8c5e4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Come prima cosa possiamo verificare con questo comando se il servizio \u00e8 attivo:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-ec08494 akihiro-widget akihiro-widget-code-highlight\" data-id=\"ec08494\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-highlight.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t\t\t<div class=\"prismjs-okaidia copy-to-clipboard \">\n\t\t\t<pre data-line=\"\" class=\"highlight-height language-bash \">\n\t\t\t\t<code readonly=\"true\" class=\"language-bash\">\n\t\t\t\t\t<xmp>sudo systemctl status systemd-timesyncd<\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-92b100c akihiro-widget akihiro-widget-text-editor\" data-id=\"92b100c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Se il servizio \u00e8 attivo otteniamo un output simile al seguente:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-f5e0edf akihiro-widget akihiro-widget-code-highlight\" data-id=\"f5e0edf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-highlight.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t\t\t<div class=\"prismjs-okaidia copy-to-clipboard \">\n\t\t\t<pre data-line=\"\" class=\"highlight-height language-bash \">\n\t\t\t\t<code readonly=\"true\" class=\"language-bash\">\n\t\t\t\t\t<xmp>\u25cf systemd-timesyncd.service - Network Time Synchronization\n     Loaded: loaded (\/lib\/systemd\/system\/systemd-timesyncd.service; enabled; vendor preset: enabled)\n     Active: active (running) since Tue 2023-08-22 09:08:17 CEST; 1h 25min ago\n       Docs: man:systemd-timesyncd.service(8)\n   Main PID: 2102 (systemd-timesyn)\n     Status: \"Initial synchronization to time server 185.125.190.58:123 (ntp.ubuntu.com).\"\n      Tasks: 2 (limit: 38078)\n     Memory: 1.5M\n     CGroup: \/system.slice\/systemd-timesyncd.service\n             \u2514\u25002102 \/lib\/systemd\/systemd-timesyncd<\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-8a18440 akihiro-widget akihiro-widget-text-editor\" data-id=\"8a18440\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>A questo punto disabilitiamo il servizio systemd-timesyncd lanciando i seguenti comandi:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-472a326 akihiro-widget akihiro-widget-code-highlight\" data-id=\"472a326\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-highlight.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t\t\t<div class=\"prismjs-okaidia copy-to-clipboard \">\n\t\t\t<pre data-line=\"\" class=\"highlight-height language-bash \">\n\t\t\t\t<code readonly=\"true\" class=\"language-bash\">\n\t\t\t\t\t<xmp>sudo systemctl stop systemd-timesyncd\nsudo systemctl disable systemd-timesyncd<\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-25e21fb akihiro-widget akihiro-widget-text-editor\" data-id=\"25e21fb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Se inoltre vogliamo la certezza che al reboot della macchina il servizio non venga riavviato, usiamo il seguente comando per mascherarlo:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-612d83e akihiro-widget akihiro-widget-code-highlight\" data-id=\"612d83e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-highlight.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t\t\t<div class=\"prismjs-okaidia copy-to-clipboard \">\n\t\t\t<pre data-line=\"\" class=\"highlight-height language-bash \">\n\t\t\t\t<code readonly=\"true\" class=\"language-bash\">\n\t\t\t\t\t<xmp>sudo systemctl mask systemd-timesyncd<\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-cfadee1 akihiro-widget akihiro-widget-text-editor\" data-id=\"cfadee1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Dopo aver apportato cambiamenti alla configurazione di systemd \u00e8 sicuramente best practice eseguire il seguente comando :<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-72d263b akihiro-widget akihiro-widget-code-highlight\" data-id=\"72d263b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-highlight.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t\t\t<div class=\"prismjs-okaidia copy-to-clipboard \">\n\t\t\t<pre data-line=\"\" class=\"highlight-height language-bash \">\n\t\t\t\t<code readonly=\"true\" class=\"language-bash\">\n\t\t\t\t\t<xmp>sudo systemctl daemon-reload<\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-5cbccab akihiro-widget akihiro-widget-text-editor\" data-id=\"5cbccab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Questo ricarica la configurazione di systemd e assicura che ogni cambiamento apportato sia immediatamente disponibile senza dover eseguire il reboot della macchina<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-19feb25 akihiro-widget akihiro-widget-heading\" data-id=\"19feb25\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t<h3 class=\"akihiro-heading-title akihiro-size-default\">Riattivare systemd-timesyncd<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-b9616ca akihiro-widget akihiro-widget-text-editor\" data-id=\"b9616ca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Per ripristinare il funzionamento di systemd-timesyncd lanciamo i comandi inversi a quelli che abbiamo utilizzato per disabilitarlo:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"akihiro-element akihiro-element-dc3db52 akihiro-widget akihiro-widget-code-highlight\" data-id=\"dc3db52\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-highlight.default\">\n\t\t\t\t<div class=\"akihiro-widget-container\">\n\t\t\t\t\t\t\t<div class=\"prismjs-okaidia copy-to-clipboard \">\n\t\t\t<pre data-line=\"\" class=\"highlight-height language-bash \">\n\t\t\t\t<code readonly=\"true\" class=\"language-bash\">\n\t\t\t\t\t<xmp>sudo systemctl unmask systemd-timesyncd\nsudo systemctl enable systemd-timesyncd\nsudo systemctl start systemd-timesyncd\nsudo systemctl daemon-reload<\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Questa guida \u00e8 finalizzata alla disattivazione del servizio systemd-timesyncd sulle macchine Ubuntu. Di solito si sceglie di disabilitare questo servizio quando si vuole evitare la sincronizzazione del sistema con un time server via ntp. Tabella dei Contenuti Cos&#8217;\u00e8 systemd-timesyncd Il servizio systemd-timesyncd \u00e8 presente sui sistemi Linux per sincronizzare via rete l&#8217;orologio di sistema. Sostanzialmente [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[20,19],"class_list":["post-1721","post","type-post","status-publish","format-standard","hentry","category-sistemistica","tag-linux","tag-ubuntu"],"_links":{"self":[{"href":"https:\/\/alessandromasciadri.com\/ama-json\/wp\/v2\/posts\/1721","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/alessandromasciadri.com\/ama-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/alessandromasciadri.com\/ama-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/alessandromasciadri.com\/ama-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/alessandromasciadri.com\/ama-json\/wp\/v2\/comments?post=1721"}],"version-history":[{"count":14,"href":"https:\/\/alessandromasciadri.com\/ama-json\/wp\/v2\/posts\/1721\/revisions"}],"predecessor-version":[{"id":1735,"href":"https:\/\/alessandromasciadri.com\/ama-json\/wp\/v2\/posts\/1721\/revisions\/1735"}],"wp:attachment":[{"href":"https:\/\/alessandromasciadri.com\/ama-json\/wp\/v2\/media?parent=1721"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/alessandromasciadri.com\/ama-json\/wp\/v2\/categories?post=1721"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/alessandromasciadri.com\/ama-json\/wp\/v2\/tags?post=1721"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}