{"id":29353,"date":"2022-08-16T23:04:51","date_gmt":"2023-11-17T03:15:04","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/mongodb%e7%ac%94%e8%ae%b0\/"},"modified":"2025-08-12T13:40:44","modified_gmt":"2025-08-12T05:40:44","slug":"mongodb%e7%ac%94%e8%ae%b0","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/mongodb%e7%ac%94%e8%ae%b0\/","title":{"rendered":"MongoDB\u7b14\u8bb0"},"content":{"rendered":"<p>\u4e0eSQL\u76f8\u6bd4<\/p>\n<h2>\u8bf7\u63d0\u4f9b\u4e00\u4e2a\u4e2d\u6587\u7684\u4e0a\u4e0b\u6587\u3002<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\/etc\/mongodb.conf<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\/etc\/init.d\/mongodb<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\/var\/log\/mongodb\/mongodb.log<\/ul>\n<h2>mongostat\u662f\u4e00\u4e2a\u547d\u4ee4\u884c\u5de5\u5177\u3002<\/h2>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>mongostat \r\nconnected to: 127.0.0.1\r\ninsert  query update delete getmore <span class=\"nb\">command <\/span>flushes mapped  vsize    res faults  locked db idx miss %     qr|qw   ar|aw  netIn netOut  conn       <span class=\"nb\">time \r\n     <\/span>0      0      0      0       0       1       0    80m   347m    33m      0  <span class=\"nb\">test<\/span>:0.0%          0       0|0     0|0    62b     1k     1   15:48:17 \r\n     0      0      0      0       0       1       0    80m   347m    33m      0  <span class=\"nb\">test<\/span>:0.0%          0       0|0     0|0    62b     1k     1   15:48:18 \r\n     0      0      0      0       0       1       0    80m   347m    33m      0  <span class=\"nb\">test<\/span>:0.0%          0       0|0     0|0    62b     1k     1   15:48:19 \r\n     0      0      0      0       0       1       0    80m   347m    33m      0  <span class=\"nb\">test<\/span>:0.0%          0       0|0     0|0    62b     1k     \r\n<\/code><\/pre>\n<h2>\u6e38\u620f\u673a<\/h2>\n<pre class=\"post-pre\"><code><span class=\"o\">&gt;<\/span> <span class=\"nb\">help\r\n        <\/span>db.help<span class=\"o\">()<\/span>                    <span class=\"nb\">help <\/span>on db methods\r\n        db.mycoll.help<span class=\"o\">()<\/span>             <span class=\"nb\">help <\/span>on collection methods\r\n        sh.help<span class=\"o\">()<\/span>                    sharding helpers\r\n        rs.help<span class=\"o\">()<\/span>                    replica <span class=\"nb\">set <\/span>helpers\r\n        <span class=\"nb\">help <\/span>admin                   administrative <span class=\"nb\">help\r\n        help <\/span>connect                 connecting to a db <span class=\"nb\">help\r\n        help <\/span>keys                    key shortcuts\r\n        <span class=\"nb\">help <\/span>misc                    misc things to know\r\n        <span class=\"nb\">help <\/span>mr                      mapreduce\r\n\r\n        show dbs                     show database names\r\n        show collections             show collections <span class=\"k\">in <\/span>current database\r\n        show <span class=\"nb\">users                   <\/span>show <span class=\"nb\">users <\/span><span class=\"k\">in <\/span>current database\r\n        show profile                 show most recent system.profile entries with <span class=\"nb\">time<\/span> <span class=\"o\">&gt;=<\/span> 1ms\r\n        show logs                    show the accessible logger names\r\n        show log <span class=\"o\">[<\/span>name]              prints out the last segment of log <span class=\"k\">in <\/span>memory, <span class=\"s1\">'global'<\/span> is default\r\n        use &lt;db_name&gt;                <span class=\"nb\">set <\/span>current database\r\n        db.foo.find<span class=\"o\">()<\/span>                list objects <span class=\"k\">in <\/span>collection foo\r\n        db.foo.find<span class=\"o\">(<\/span> <span class=\"o\">{<\/span> a : 1 <span class=\"o\">}<\/span> <span class=\"o\">)<\/span>     list objects <span class=\"k\">in <\/span>foo where a <span class=\"o\">==<\/span> 1\r\n        it                           result of the last line evaluated<span class=\"p\">;<\/span> use to further iterate\r\n        DBQuery.shellBatchSize <span class=\"o\">=<\/span> x   <span class=\"nb\">set <\/span>default number of items to display on shell\r\n        <span class=\"nb\">exit                         <\/span>quit the mongo shell\r\n<span class=\"o\">&gt;<\/span> show dbs\r\n<span class=\"nb\">local<\/span>   <span class=\"o\">(<\/span>empty<span class=\"o\">)<\/span>\r\n<span class=\"o\">&gt;<\/span> use <span class=\"nb\">local\r\n<\/span>switched to db <span class=\"nb\">local<\/span>\r\n<span class=\"o\">&gt;<\/span> db.local.find<span class=\"o\">()<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"o\">&gt;<\/span> use <span class=\"nb\">test\r\n<\/span>switched to db <span class=\"nb\">test<\/span>\r\n<span class=\"o\">&gt;<\/span> db.col.save<span class=\"o\">({<\/span>A:1<span class=\"o\">})<\/span><span class=\"p\">;<\/span>\r\n<span class=\"o\">&gt;<\/span> db.col.find<span class=\"o\">()<\/span><span class=\"p\">;<\/span>\r\n<span class=\"o\">{<\/span> <span class=\"s2\">\"_id\"<\/span> : ObjectId<span class=\"o\">(<\/span><span class=\"s2\">\"52146053f1cf872b926ddab2\"<\/span><span class=\"o\">)<\/span>, <span class=\"s2\">\"A\"<\/span> : 1 <span class=\"o\">}<\/span>\r\n<span class=\"o\">&gt;<\/span> db.col.count<span class=\"o\">()<\/span><span class=\"p\">;<\/span>\r\n1\r\n<span class=\"o\">&gt;<\/span> db.col.save<span class=\"o\">({<\/span>B:2<span class=\"o\">})<\/span><span class=\"p\">;<\/span>\r\n<span class=\"o\">&gt;<\/span> db.col.save<span class=\"o\">({<\/span>C:5<span class=\"o\">})<\/span><span class=\"p\">;<\/span>\r\n<span class=\"o\">&gt;<\/span> db.col.find<span class=\"o\">()<\/span><span class=\"p\">;<\/span>\r\n<span class=\"o\">{<\/span> <span class=\"s2\">\"_id\"<\/span> : ObjectId<span class=\"o\">(<\/span><span class=\"s2\">\"52146053f1cf872b926ddab2\"<\/span><span class=\"o\">)<\/span>, <span class=\"s2\">\"A\"<\/span> : 1 <span class=\"o\">}<\/span>\r\n<span class=\"o\">{<\/span> <span class=\"s2\">\"_id\"<\/span> : ObjectId<span class=\"o\">(<\/span><span class=\"s2\">\"5214606cf1cf872b926ddab3\"<\/span><span class=\"o\">)<\/span>, <span class=\"s2\">\"B\"<\/span> : 2 <span class=\"o\">}<\/span>\r\n<span class=\"o\">{<\/span> <span class=\"s2\">\"_id\"<\/span> : ObjectId<span class=\"o\">(<\/span><span class=\"s2\">\"5214606ff1cf872b926ddab4\"<\/span><span class=\"o\">)<\/span>, <span class=\"s2\">\"C\"<\/span> : 5 <span class=\"o\">}<\/span>\r\n<span class=\"o\">&gt;<\/span> db.col.find<span class=\"o\">({<\/span>B:2<span class=\"o\">})<\/span><span class=\"p\">;<\/span>\r\n<span class=\"o\">{<\/span> <span class=\"s2\">\"_id\"<\/span> : ObjectId<span class=\"o\">(<\/span><span class=\"s2\">\"5214606cf1cf872b926ddab3\"<\/span><span class=\"o\">)<\/span>, <span class=\"s2\">\"B\"<\/span> : 2 <span class=\"o\">}<\/span>\r\n<span class=\"o\">&gt;<\/span> db.col.remove<span class=\"o\">({<\/span><span class=\"s2\">\"C\"<\/span>:5<span class=\"o\">})<\/span>\r\n<span class=\"o\">&gt;<\/span> db.col.find<span class=\"o\">()<\/span><span class=\"p\">;<\/span>\r\n<span class=\"o\">{<\/span> <span class=\"s2\">\"_id\"<\/span> : ObjectId<span class=\"o\">(<\/span><span class=\"s2\">\"52146053f1cf872b926ddab2\"<\/span><span class=\"o\">)<\/span>, <span class=\"s2\">\"A\"<\/span> : 1 <span class=\"o\">}<\/span>\r\n<span class=\"o\">{<\/span> <span class=\"s2\">\"_id\"<\/span> : ObjectId<span class=\"o\">(<\/span><span class=\"s2\">\"5214606cf1cf872b926ddab3\"<\/span><span class=\"o\">)<\/span>, <span class=\"s2\">\"B\"<\/span> : 2 <span class=\"o\">}<\/span>\r\n<span class=\"o\">&gt;<\/span> db.col.save<span class=\"o\">({<\/span> <span class=\"s2\">\"first_name\"<\/span> : <span class=\"s2\">\"Jane\"<\/span>, <span class=\"s2\">\"last_name\"<\/span> : <span class=\"s2\">\"Doe\"<\/span>, <span class=\"s2\">\"age\"<\/span> : 23  <span class=\"o\">})<\/span><span class=\"p\">;<\/span>\r\n<span class=\"o\">&gt;<\/span> db.col.find<span class=\"o\">()<\/span><span class=\"p\">;<\/span>\r\n<span class=\"o\">{<\/span> <span class=\"s2\">\"_id\"<\/span> : ObjectId<span class=\"o\">(<\/span><span class=\"s2\">\"52146053f1cf872b926ddab2\"<\/span><span class=\"o\">)<\/span>, <span class=\"s2\">\"A\"<\/span> : 1 <span class=\"o\">}<\/span>\r\n<span class=\"o\">{<\/span> <span class=\"s2\">\"_id\"<\/span> : ObjectId<span class=\"o\">(<\/span><span class=\"s2\">\"5214606cf1cf872b926ddab3\"<\/span><span class=\"o\">)<\/span>, <span class=\"s2\">\"B\"<\/span> : 2 <span class=\"o\">}<\/span>\r\n<span class=\"o\">{<\/span> <span class=\"s2\">\"_id\"<\/span> : ObjectId<span class=\"o\">(<\/span><span class=\"s2\">\"521460a6f1cf872b926ddab5\"<\/span><span class=\"o\">)<\/span>, <span class=\"s2\">\"first_name\"<\/span> : <span class=\"s2\">\"Jane\"<\/span>, <span class=\"s2\">\"last_name\"<\/span> : <span class=\"s2\">\"Doe\"<\/span>, <span class=\"s2\">\"age\"<\/span> : 23 <span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u4e0eSQL\u76f8\u6bd4 \u8bf7\u63d0\u4f9b\u4e00\u4e2a\u4e2d\u6587\u7684\u4e0a\u4e0b\u6587\u3002 \/etc\/mongodb.conf &nbsp; \/etc\/init. [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-29353","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>MongoDB\u7b14\u8bb0 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8eMongoDB\u7b14\u8bb0\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/mongodb\u7b14\u8bb0\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MongoDB\u7b14\u8bb0\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8eMongoDB\u7b14\u8bb0\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/mongodb\u7b14\u8bb0\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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