{"id":14459,"date":"2024-01-06T11:37:31","date_gmt":"2024-01-06T08:07:31","guid":{"rendered":"https:\/\/www.itpiran.net\/blog\/?p=14459"},"modified":"2024-01-06T11:37:31","modified_gmt":"2024-01-06T08:07:31","slug":"optimize-journalctl-to-save-server-disk-space-in-linux","status":"publish","type":"post","link":"https:\/\/www.itpiran.net\/blog\/zh\/tutorials\/optimize-journalctl-to-save-server-disk-space-in-linux\/","title":{"rendered":"\u901a\u8fc7 journalctl \u4f18\u5316 Linux \u78c1\u76d8\u7a7a\u95f4"},"content":{"rendered":"<h2 id=\"introduction\"><span id=\"%d9%85%d9%82%d8%af%d9%85%d9%87\">\u4ecb\u7ecd<\/span><\/h2>\n<p>\u4f5c\u4e3a\u7cfb\u7edf\u7ba1\u7406\u5458\uff0c\u7ba1\u7406\u65e5\u5fd7\u662f\u7ef4\u62a4 Linux \u670d\u52a1\u5668\u5065\u5eb7\u548c\u6027\u80fd\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\u3002\u73b0\u4ee3 Linux \u53d1\u884c\u7248\u4e2d\u7684\u4e3b\u8981\u65e5\u5fd7\u7cfb\u7edf\u4e4b\u4e00\u662f systemd \u65e5\u5fd7\u5b50\u7cfb\u7edf journalctl\u3002\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\uff0c\u65e5\u5fd7\u4f1a\u4e0d\u65ad\u7d2f\u79ef\u5e76\u5360\u7528\u5927\u91cf\u78c1\u76d8\u7a7a\u95f4\uff0c\u5982\u679c\u78c1\u76d8\u7a7a\u95f4\u4e0d\u8db3\uff0c\u5219\u4f1a\u5bfc\u81f4\u5404\u79cd\u95ee\u9898\u3002\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f18\u5316 journalctl\uff0c\u4ee5\u8282\u7701\u670d\u52a1\u5668\u78c1\u76d8\u7a7a\u95f4\uff0c\u540c\u65f6\u786e\u4fdd\u4fdd\u7559\u5fc5\u8981\u7684\u65e5\u5fd7\u4fe1\u606f\uff0c\u7528\u4e8e\u6545\u969c\u6392\u9664\u548c\u5ba1\u8ba1\u3002.<\/p>\n<p><strong>Journalctl \u548c Systemd \u65e5\u5fd7\u8bb0\u5f55\u7b80\u4ecb <\/strong><\/p>\n<p>\u5728\u6df1\u5165\u63a2\u8ba8\u4f18\u5316\u4e4b\u524d\uff0c\u4e86\u89e3 journalctl \u548c systemd \u65e5\u5fd7\u8bb0\u5f55\u7684\u57fa\u672c\u6982\u5ff5\u81f3\u5173\u91cd\u8981\u3002systemd \u65e5\u5fd7\u8bb0\u5f55\u662f\u4e00\u4e2a\u65e5\u5fd7\u5bf9\uff0c\u5b83\u4ee5\u7ed3\u6784\u5316\u548c\u7d22\u5f15\u5316\u7684\u683c\u5f0f\u5b58\u50a8\u65e5\u5fd7\u6570\u636e\u3002journalctl \u662f\u7528\u4e8e\u4e0e\u65e5\u5fd7\u8bb0\u5f55\u4ea4\u4e92\u7684\u4ee3\u7801\u548c\u547d\u4ee4\u3002.<\/p>\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0csystemd \u65e5\u5fd7\u4e2d\u7684\u8bb0\u5f55\u4f1a\u5728\u7cfb\u7edf\u91cd\u542f\u540e\u4ecd\u7136\u5b58\u5728\uff0c\u5982\u679c\u6ca1\u6709\u8fdb\u884c\u9002\u5f53\u7684\u914d\u7f6e\uff0c\u65e5\u5fd7\u53ef\u80fd\u4f1a\u65e0\u9650\u589e\u957f\u3002\u8fd9\u5c31\u662f\u4f18\u5316\u53d1\u6325\u4f5c\u7528\u7684\u5730\u65b9\u3002.<\/p>\n<h2 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-1-%d8%a7%d8%b1%d8%b2%db%8c%d8%a7%d8%a8%db%8c-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d8%a7%d8%b2-%d8%af%db%8c%d8%b3%da%a9-%d9%81%d8%b9%d9%84%db%8c-%d8%aa\">\u6b65\u9aa4 1 \u2013 \u901a\u8fc7\u65e5\u5fd7\u62a5\u544a\u8bc4\u4f30\u5f53\u524d\u78c1\u76d8\u4f7f\u7528\u60c5\u51b5<\/h2>\n<p>\u9996\u5148\uff0c\u8ba9\u6211\u4eec\u8bc4\u4f30\u4e00\u4e0b\u592a\u7a7a\u6742\u5fd7\u62a5\u9053\u76ee\u524d\u4f7f\u7528\u54ea\u4e9b\u5de5\u5177\uff1a<\/p>\n<div class=\"gatsby-highlight\" data-language=\"bash\">\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>journalctl --disk-usage<\/code><\/pre>\n<\/div>\n<pre class=\"language-bash line-numbers\"><span style=\"font-family: Tahoma, 'Times New Roman', 'Bitstream Charter', Times, serif;\">\u6b64\u547d\u4ee4\u5c06\u663e\u793a\u65e5\u5fd7\u62a5\u544a\u5360\u7528\u7684\u78c1\u76d8\u7a7a\u95f4\u603b\u91cf\u3002.\r\n<\/span><\/pre>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>Archived and active journals take up 3.5G in the file system.<\/code><\/pre>\n<\/div>\n<\/div>\n<div data-language=\"bash\">\n<h2 id=\"%d9%82%d8%af%d9%85-%d8%af%d9%88%d9%85-%d8%aa%d9%86%d8%b8%db%8c%d9%85-systemd-journald\">\u6b65\u9aa4 2 \u2013 \u914d\u7f6e Systemd-journald<\/h2>\n<\/div>\n<p>systemd \u65e5\u5fd7\u662f\u901a\u8fc7\u6587\u4ef6\u914d\u7f6e\u7684\u3002<span>\u00a0<\/span><code>\/etc\/systemd\/journald.conf<\/code>. \u8981\u4f18\u5316\u78c1\u76d8\u4f7f\u7528\uff0c\u60a8\u9700\u8981\u7f16\u8f91\u6b64\u6587\u4ef6\u3002.<\/p>\n<div class=\"gatsby-highlight\" data-language=\"bash\">\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo nano \/etc\/systemd\/journald.conf<\/code><\/pre>\n<\/div>\n<\/div>\n<p>\u4ee5\u4e0b\u662f\u60a8\u5e94\u8be5\u8003\u8651\u7684\u5173\u952e\u8bbe\u7f6e\uff1a<\/p>\n<ul>\n<li><code>\u7cfb\u7edf\u6700\u5927\u4f7f\u7528\u91cf<\/code>\u6b64\u8bbe\u7f6e\u9650\u5236\u4e86\u65e5\u5fd7\u5728\u78c1\u76d8\u4e0a\u53ef\u4f7f\u7528\u7684\u6700\u5927\u7a7a\u95f4\u3002\u4e00\u65e6\u8fbe\u5230\u6b64\u9650\u5236\uff0c\u8f83\u65e7\u7684\u65e5\u5fd7\u5c06\u88ab\u5220\u9664\uff0c\u4ee5\u4fbf\u4e3a\u65b0\u65e5\u5fd7\u817e\u51fa\u7a7a\u95f4\u3002.<\/li>\n<li><code>SystemKeepFree<\/code>\u8fd9\u6837\u53ef\u4ee5\u786e\u4fdd systemd \u59cb\u7ec8\u5728\u78c1\u76d8\u4e0a\u7559\u51fa\u4e00\u5b9a\u91cf\u7684\u53ef\u7528\u7a7a\u95f4\u3002.<\/li>\n<li><code>\u6700\u5927\u4fdd\u7559\u79d2<\/code>\uff1a\u6b64\u8bbe\u7f6e\u6307\u793a\u65e5\u5fd7\u6761\u76ee\u5b58\u50a8\u7684\u6700\u957f\u65f6\u95f4\u3002\u65e9\u4e8e\u6b64\u65f6\u95f4\u7684\u6761\u76ee\u5c06\u88ab\u5220\u9664\u3002.<\/li>\n<li><code>\u6700\u5927\u6587\u4ef6\u5b89\u5168<\/code>\uff1a\u8fd9\u8bbe\u7f6e\u4e86\u542f\u52a8\u65b0\u65e5\u5fd7\u6587\u4ef6\u4e4b\u524d\u7684\u6700\u5927\u7b49\u5f85\u65f6\u95f4\u3002.<\/li>\n<\/ul>\n<p>\u6839\u636e\u670d\u52a1\u5668\u78c1\u76d8\u5927\u5c0f\u548c\u9700\u8981\u4fdd\u7559\u7684\u65e5\u5fd7\u4fe1\u606f\u91cf\u6765\u914d\u7f6e\u8fd9\u4e9b\u8bbe\u7f6e\u3002\u4f8b\u5982\uff1a<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>SystemMaxUse=500M\r\nSystemKeepFree=1G\r\nMaxRetentionSec=1month\r\nMaxFileSec=1week<\/code><\/pre>\n<\/div>\n<p>\u8fd9\u4e9b\u8bbe\u7f6e\u5c06\u65e5\u5fd7\u5927\u5c0f\u9650\u5236\u4e3a 500 MB\uff0c\u786e\u4fdd\u59cb\u7ec8\u81f3\u5c11\u6709 1 GB \u7684\u78c1\u76d8\u7a7a\u95f4\u53ef\u7528\uff0c\u65e5\u5fd7\u6700\u591a\u4fdd\u7559\u4e00\u4e2a\u6708\uff0c\u5e76\u4e14\u6bcf\u5468\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u65e5\u5fd7\u6587\u4ef6\u3002.<\/p>\n<p>\u6587\u4ef6\u7f16\u8f91\u5b8c\u6210\u540e\uff0c\u4fdd\u5b58\u66f4\u6539\u5e76\u91cd\u542f\u670d\u52a1\uff1a<code>systemd-journald<\/code><span> \u76f4\u63a5\u7269\u4f53\u7684\u7c92\u5b50<\/span> \u53d1\u5c04<span> .<\/span><\/p>\n<div class=\"gatsby-highlight\" data-language=\"bash\">\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo systemctl restart systemd-journald<\/code><\/pre>\n<\/div>\n<\/div>\n<h2 id=\"step-3---manually-trimming-the-journal\"><span id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-3-%d8%a8%d8%b1%d8%b4-%d8%af%d8%b3%d8%aa%db%8c-journal\">\u6b65\u9aa4 3 \u2013 \u624b\u52a8\u5207\u9875<\/span><\/h2>\n<p>\u5982\u679c\u9700\u8981\u7acb\u5373\u51cf\u5c11\u78c1\u76d8\u7a7a\u95f4\u5360\u7528\uff0c\u53ef\u4ee5\u624b\u52a8\u622a\u65ad\u65e5\u5fd7\u3002\u8981\u5220\u9664\u65e9\u4e8e\u7279\u5b9a\u65f6\u95f4\u7684\u6761\u76ee\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<div class=\"gatsby-highlight\" data-language=\"bash\">\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo journalctl --vacuum-time=1month<\/code><\/pre>\n<\/div>\n<\/div>\n<p>\u8981\u5c06\u65e5\u5fd7\u5927\u5c0f\u9650\u5236\u4e3a\u7279\u5b9a\u5927\u5c0f\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<div class=\"gatsby-highlight\" data-language=\"bash\">\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo journalctl --vacuum-size=500M<\/code><\/pre>\n<\/div>\n<\/div>\n<p>\u8fd9\u4e9b\u547d\u4ee4\u4f1a\u5220\u9664\u8f83\u65e7\u7684\u6761\u76ee\uff0c\u4ee5\u9075\u5b88\u60a8\u8bbe\u7f6e\u7684\u65f6\u95f4\u95f4\u9694\u6216\u5927\u5c0f\u9650\u5236\u3002.<\/p>\n<h2 id=\"step-4---setting-up-log-rotation\"><span id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-4-%d8%aa%d9%86%d8%b8%db%8c%d9%85-%da%86%d8%b1%d8%ae%d8%b4-%da%af%d8%b2%d8%a7%d8%b1%d8%b4-log-rotation\">\u7b2c\u56db\u6b65\u2014\u2014\u8bbe\u7f6e\u5bf9\u6570\u8f6e\u6362<\/span><\/h2>\n<p><code><\/code>\u5c3d\u7ba1 <code>systemd-journald<\/code> \u5b83\u4f1a\u6839\u636e\u914d\u7f6e\u6587\u4ef6\uff08config\uff09\u6267\u884c\u62a5\u544a\u8f6e\u6362\uff0c\u5982\u679c\u60a8\u540c\u65f6\u4f7f\u7528\u5176\u4ed6\u62a5\u544a\u7cfb\u7edf\u7684\u8bdd\u3002 <code>systemd-journald<\/code> \u60a8\u8fd8\u53ef\u4ee5\u8bbe\u7f6e\u5176\u4ed6\u62a5\u8868\u8f6e\u64ad\u89c4\u5219\u3002\u4f8b\u5982\uff1a <code>\u5bf9\u6570\u65cb\u8f6c<\/code> \u8fd9\u662f\u4e00\u4e2a\u7528\u4e8e\u8f6e\u6362\u3001\u538b\u7f29\u548c\u901a\u8fc7\u7535\u5b50\u90ae\u4ef6\u53d1\u9001\u7cfb\u7edf\u65e5\u5fd7\u7684\u5de5\u5177\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u7f16\u8f91\u5176\u914d\u7f6e\u6587\u4ef6\u6765\u5bf9\u5176\u8fdb\u884c\u914d\u7f6e\u3002 <code>\/etc\/logrotate.conf<\/code> \u548c <code>\/etc\/logrotate.d logrotate <\/code>\u914d\u7f6e\u3002.<\/p>\n<h2 id=\"conclusion\"><span id=\"%d9%86%d8%aa%db%8c%d8%ac%d9%87%da%af%db%8c%d8%b1%db%8c\">\u7ed3\u8bba<\/span><\/h2>\n<p>\u4f18\u5316 <code>journalctl<\/code> \u7ba1\u7406 Linux \u670d\u52a1\u5668\u78c1\u76d8\u7a7a\u95f4\u7684\u4e00\u4e2a\u5173\u952e\u6b65\u9aa4\u662f\u914d\u7f6e\u00a0<code>systemd-journald<\/code>\u901a\u8fc7\u624b\u52a8\u622a\u65ad\u65e5\u5fd7\u3001\u8bbe\u7f6e\u65e5\u5fd7\u8f6e\u6362\u4ee5\u53ca\u76d1\u63a7\u78c1\u76d8\u4f7f\u7528\u60c5\u51b5\uff0c\u60a8\u53ef\u4ee5\u786e\u4fdd\u670d\u52a1\u5668\u9ad8\u6548\u8fd0\u884c\uff0c\u907f\u514d\u56e0\u65e5\u5fd7\u6587\u4ef6\u8fc7\u5927\u800c\u5bfc\u81f4\u78c1\u76d8\u7a7a\u95f4\u4e0d\u8db3\u3002\u8bf7\u8bb0\u4f4f\uff0c\u8981\u5e73\u8861\u78c1\u76d8\u7a7a\u95f4\u9700\u6c42\u4e0e\u7528\u4e8e\u5206\u6790\u548c\u6545\u969c\u6392\u9664\u7684\u8db3\u591f\u65e5\u5fd7\u6570\u636e\u9700\u6c42\u3002\u5b9a\u671f\u68c0\u67e5\u548c\u8c03\u6574\u65e5\u5fd7\u914d\u7f6e\u6709\u52a9\u4e8e\u60a8\u4fdd\u6301\u6700\u4f73\u8bbe\u7f6e\u3002.<\/p>","protected":false},"excerpt":{"rendered":"\u5f15\u8a00 \u4f5c\u4e3a\u7cfb\u7edf\u7ba1\u7406\u5458\uff0c\u7ba1\u7406\u65e5\u5fd7\u662f\u7ef4\u62a4 Linux \u670d\u52a1\u5668\u5065\u5eb7\u548c\u6027\u80fd\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\u2026\u2026","protected":false},"author":1,"featured_media":14460,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"\u0641\u0636\u0627\u06cc \u062f\u06cc\u0633\u06a9 \u0644\u06cc\u0646\u0648\u06a9\u0633","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_yoast_wpseo_canonical":"","_yoast_wpseo_opengraph-description":"","_yoast_wpseo_opengraph-image":"","_yoast_wpseo_twitter-description":"","_yoast_wpseo_twitter-image":"","_yoast_wpseo_focuskeywords":"","_yoast_wpseo_primary_category":"193","footnotes":""},"categories":[193,354],"tags":[357,358,355,356],"class_list":{"0":"post-14459","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-tutorials","8":"category-disk","9":"tag-journalctl","10":"tag-linux","11":"tag-355","12":"tag-356"},"yoast_head":"<!-- This site is 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