{"id":31137,"date":"2026-06-01T10:00:00","date_gmt":"2026-06-01T02:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=31137"},"modified":"2026-07-26T13:28:17","modified_gmt":"2026-07-26T05:28:17","slug":"ceph-distributed-storage-vps","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/tutorials\/ceph-distributed-storage-vps\/","title":{"rendered":"Ceph \u5206\u5e03\u5f0f\u5b58\u50a8\u5165\u95e8\uff1a\u5728\u591a\u8282\u70b9 VPS \u4e0a\u642d\u5efa\u9ad8\u53ef\u7528\u5b58\u50a8"},"content":{"rendered":"

\u5982\u4f55\u5728\u591a\u53f0 [VPS](https:\/\/cn.hostease.com\/vps\/)\uff08[\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668](https:\/\/cn.hostease.com\/vps\/)\uff09\u4e0a\u642d\u5efa\u9ad8\u53ef\u7528\u7684\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\uff1f\u8fd9\u662f\u8fd0\u7ef4\u5de5\u7a0b\u5e08\u5728\u4e1a\u52a1\u6269\u5927\u540e\u9762\u4e34\u7684\u5171\u540c\u6311\u6218\u3002Ceph \u5206\u5e03\u5f0f\u5b58\u50a8\u4f5c\u4e3a\u5f00\u6e90\u793e\u533a\u6700\u6210\u719f\u7684\u7edf\u4e00\u5b58\u50a8\u65b9\u6848\uff0c\u80fd\u5c06\u591a\u53f0\u670d\u52a1\u5668\u7684\u78c1\u76d8\u8d44\u6e90\u6574\u5408\u4e3a\u5f39\u6027\u53ef\u6269\u5c55\u7684\u5b58\u50a8\u6c60\uff0c\u89e3\u51b3\u5bb9\u91cf\u74f6\u9888\u4e0e\u6570\u636e\u5197\u4f59\u95ee\u9898\u3002\u672c\u6587\u5c06\u4ece\u67b6\u6784\u5230\u90e8\u7f72\uff0c\u6559\u4f60\u642d\u5efa\u751f\u4ea7\u7ea7 Ceph \u96c6\u7fa4\u3002<\/p>\n

\"cover\"<\/p>\n

\u8ba4\u8bc6 Ceph \u7684\u6838\u5fc3\u67b6\u6784<\/h2>\n

Ceph \u7684\u8bbe\u8ba1\u54f2\u5b66\u662f\u53bb\u4e2d\u5fc3\u5316\u3001\u81ea\u6211\u4fee\u590d\u3001\u7ebf\u6027\u6269\u5c55\u3002\u6574\u4e2a\u67b6\u6784\u5efa\u7acb\u5728 RADOS\uff08\u53ef\u9760\u81ea\u6cbb\u5206\u5e03\u5f0f\u5bf9\u8c61\u5b58\u50a8\uff09\u4e4b\u4e0a\uff0c\u5b83\u662f Ceph \u7684\u57fa\u77f3\uff0c\u8d1f\u8d23\u5c06\u6570\u636e\u5207\u5206\u4e3a\u5bf9\u8c61\u5e76\u786e\u4fdd\u6b63\u786e\u5b58\u50a8\u548c\u590d\u5236\u3002<\/p>\n

RADOS \u5c42\u9762\u6709\u4e09\u7c7b\u5b88\u62a4\u8fdb\u7a0b\u3002OSD\uff08\u5bf9\u8c61\u5b58\u50a8\u5b88\u62a4\u8fdb\u7a0b\uff09\u662f\u5b9e\u9645\u5b58\u50a8\u6570\u636e\u7684\u5355\u5143\uff0c\u901a\u5e38\u5bf9\u5e94\u4e00\u5757\u78c1\u76d8\u3002MON\uff08\u76d1\u63a7\u5b88\u62a4\u8fdb\u7a0b\uff09\u7ef4\u62a4\u96c6\u7fa4\u5168\u5c40\u72b6\u6001\u56fe\u548c\u6545\u969c\u4fe1\u606f\u3002MDS\uff08\u5143\u6570\u636e\u5b88\u62a4\u8fdb\u7a0b\uff09\u4e3a CephFS \u63d0\u4f9b\u5143\u6570\u636e\u670d\u52a1\uff0c\u4f7f\u7528\u5757\u5b58\u50a8\u65f6\u53ef\u4ee5\u4e0d\u90e8\u7f72\u3002<\/p>\n

CRUSH \u7b97\u6cd5\u5982\u4f55\u5206\u5e03\u6570\u636e<\/h2>\n

CRUSH\uff08\u53ef\u590d\u5236\u7684\u54c8\u5e0c\u4e0b\u7684\u53d7\u63a7\u5206\u5e03\uff09\u7b97\u6cd5\u662f Ceph \u53bb\u4e2d\u5fc3\u5316\u7684\u5173\u952e\u3002\u5b83\u8ba9\u5ba2\u6237\u7aef\u76f4\u63a5\u8ba1\u7b97\u6570\u636e\u5e94\u5b58\u50a8\u5728\u54ea\u4e2a OSD \u4e0a\uff0c\u65e0\u9700\u67e5\u8be2\u4e2d\u5fc3\u8282\u70b9\u3002\u7b97\u6cd5\u5c06\u5bf9\u8c61 ID \u7ecf\u8fc7\u54c8\u5e0c\u8fd0\u7b97\uff0c\u7ed3\u5408\u62d3\u6251\u56fe\u548c\u526f\u672c\uff08\u6570\u636e\u5728\u591a\u4e2a\u8282\u70b9\u4e0a\u4fdd\u7559\u7684\u5197\u4f59\u62f7\u8d1d\uff09\u7b56\u7565\u8f93\u51fa\u76ee\u6807 OSD\uff0c\u786e\u4fdd\u526f\u672c\u5206\u5e03\u5728\u4e0d\u540c\u6545\u969c\u57df\u4e2d\u3002<\/p>\n

\"Ceph<\/p>\n

\u526f\u672c\u6a21\u5f0f\u4e0e\u7ea0\u5220\u7801\u7684\u9009\u62e9<\/h2>\n

\u526f\u672c\u6a21\u5f0f\u5c06\u6bcf\u4e2a\u5bf9\u8c61\u5b8c\u6574\u590d\u5236 N \u4efd\uff08\u901a\u5e38 3 \u4efd\uff09\uff0c\u8bfb\u53d6\u6027\u80fd\u597d\u3001\u6062\u590d\u5feb\uff0c\u4f46\u78c1\u76d8\u5229\u7528\u7387\u4ec5\u7ea6 33%\u3002\u7ea0\u5220\u7801\uff08\u5c06\u6570\u636e\u5206\u5757\u5e76\u9644\u52a0\u6821\u9a8c\u4fe1\u606f\u7684\u6280\u672f\uff0c\u5141\u8bb8\u4e22\u5931\u90e8\u5206\u6570\u636e\u5757\u65f6\u6062\u590d\u539f\u59cb\u6570\u636e\uff09\u66f4\u8282\u7701\u7a7a\u95f4\u3002\u5b83\u5c06\u6570\u636e\u5206\u4e3a K \u4e2a\u6570\u636e\u5757\u548c M \u4e2a\u6821\u9a8c\u5757\uff0c4+2 \u914d\u7f6e\u7684\u78c1\u76d8\u5229\u7528\u7387\u53ef\u8fbe 66%\u3002\u5efa\u8bae\u5143\u6570\u636e\u6c60\u4f7f\u7528\u4e09\u526f\u672c\uff0c\u51b7\u6570\u636e\u4f7f\u7528\u7ea0\u5220\u7801\u3002<\/p>\n

\u5728\u591a\u8282\u70b9 VPS\uff08\u865a\u62df[\u4e13\u7528\u670d\u52a1\u5668](https:\/\/cn.hostease.com\/dedicated-server\/)\uff09\u4e0a\u90e8\u7f72\u96c6\u7fa4<\/h2>\n

\u4ee5\u4e09\u53f0 VPS \u4e3a\u4f8b\uff0c\u4f7f\u7528 cephadm \u90e8\u7f72\u3002\u5148\u5728\u6240\u6709\u8282\u70b9\u914d\u7f6e SSH \u4e92\u4fe1\u3001\u653e\u884c\u7aef\u53e3\uff086789 \u7528\u4e8e MON\uff0c6800-7300 \u7528\u4e8e OSD\uff09\u3001\u6302\u8f7d\u7a7a\u95f2\u78c1\u76d8\u3001\u914d\u7f6e NTP \u65f6\u949f\u540c\u6b65\u3002<\/p>\n

\u5728\u4e3b\u8282\u70b9\u6267\u884c cephadm bootstrap --mon-ip \u8282\u70b9IP<\/code> \u521d\u59cb\u5316\u96c6\u7fa4\uff0c\u90e8\u7f72\u9996\u4e2a MON \u548c MGR \u8fdb\u7a0b\u3002\u901a\u8fc7 ceph orch host add<\/code> \u52a0\u5165\u5176\u4f59\u8282\u70b9\uff0c\u7f16\u6392\u5668\u81ea\u52a8\u68c0\u6d4b\u78c1\u76d8\u5e76\u521b\u5efa OSD\u3002\u6700\u540e\u521b\u5efa\u5b58\u50a8\u6c60\uff1aceph osd pool create mypool 128 128<\/code> \u5e76\u8bbe\u7f6e ceph osd pool set mypool size 3<\/code>\u3002<\/p>\n

\u9009\u62e9 VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09\u65f6\u5efa\u8bae\u5173\u6ce8\u78c1\u76d8 I\/O \u6027\u80fd\u548c\u5185\u7f51\u5e26\u5bbd\uff08\u670d\u52a1\u5668\u4e0e\u5916\u90e8\u7f51\u7edc\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u5bb9\u91cf\u4e0a\u9650\uff09\uff0c\u8fd9\u76f4\u63a5\u5f71\u54cd\u96c6\u7fa4\u8868\u73b0\u3002\u5982\u679c\u60f3\u4e86\u89e3\u66f4\u591a VPS \u9009\u8d2d\u4e0e\u914d\u7f6e<\/a> \u7684\u5185\u5bb9\uff0c\u53ef\u4ee5\u53c2\u8003\u6211\u4eec\u7684\u8be6\u7ec6\u6307\u5357\u3002<\/p>\n

\"Ceph<\/p>\n

\u6027\u80fd\u8c03\u4f18\u8981\u70b9<\/h2>\n

\u7f51\u7edc\u65b9\u9762\uff0c\u5efa\u8bae\u4e3a\u96c6\u7fa4\u901a\u4fe1\u914d\u7f6e\u72ec\u7acb\u7f51\u7edc\u63a5\u53e3\uff0c\u4e07\u5146\u7f51\u7edc\u80fd\u663e\u8457\u964d\u4f4e OSD \u95f4\u590d\u5236\u5ef6\u8fdf\u3002\u78c1\u76d8\u65b9\u9762\uff0c\u4e3a\u6bcf\u4e2a OSD \u4f7f\u7528\u72ec\u7acb SSD \u4f5c\u4e3a WAL\uff08\u9884\u5199\u65e5\u5fd7\uff09\u548c DB \u8bbe\u5907\u53ef\u5927\u5e45\u51cf\u5c11\u5199\u5165\u5ef6\u8fdf\u3002PG\uff08\u653e\u7f6e\u7ec4\uff09\u6570\u91cf\u5efa\u8bae\u6bcf\u4e2a OSD \u5206\u914d 100-200 \u4e2a\u3002\u5185\u6838\u53c2\u6570\u65b9\u9762\uff0c\u8c03\u6574 vm.swappiness<\/code> \u4e3a 0 \u6216 10 \u907f\u514d OSD \u88ab\u4ea4\u6362\u5230\u78c1\u76d8\u3002\u5173\u4e8e \u670d\u52a1\u5668\u8fd0\u7ef4\u4f18\u5316\u7684\u7cfb\u7edf\u5316\u65b9\u6cd5<\/a>\uff0c\u6b22\u8fce\u6df1\u5165\u9605\u8bfb\u3002<\/p>\n

\u76d1\u63a7\u4e0e\u6545\u969c\u6062\u590d<\/h2>\n

\u751f\u4ea7\u73af\u5883\u5efa\u8bae\u90e8\u7f72 Prometheus + Grafana \u76d1\u63a7\u6808\uff0c\u6267\u884c ceph mgr module enable prometheus<\/code> \u66b4\u9732\u6307\u6807\u7aef\u70b9\uff0c\u89c2\u5bdf IOPS\u3001\u541e\u5410\u91cf\u548c\u5ef6\u8fdf\u3002OSD \u6807\u8bb0\u4e3a out \u540e Ceph \u81ea\u52a8\u89e6\u53d1\u6570\u636e\u6062\u590d\uff0c\u5efa\u8bae\u9884\u7559\u70ed\u5907\u78c1\u76d8\u7f29\u77ed\u6062\u590d\u7a97\u53e3\u3002\u7ed3\u5408 Docker \u5bb9\u5668\u5316<\/a> \u80fd\u7b80\u5316\u7ec4\u4ef6\u7ba1\u7406\u3002\u89c4\u5212\u5b58\u50a8\u67b6\u6784\u53ef\u4ece \u72ec\u7acb\u670d\u52a1\u5668<\/a> \u5f00\u59cb\u5b9e\u9a8c\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n

\u603b\u7ed3\u6765\u770b\uff0cCeph \u5206\u5e03\u5f0f\u5b58\u50a8\u51ed\u501f\u53bb\u4e2d\u5fc3\u5316\u67b6\u6784\u3001CRUSH \u7b97\u6cd5\u548c\u7075\u6d3b\u7684\u5b58\u50a8\u6c60\u7b56\u7565\uff0c\u662f\u6784\u5efa\u9ad8\u53ef\u7528\u5b58\u50a8\u96c6\u7fa4\u7684\u7406\u60f3\u9009\u62e9\u3002\u5efa\u8bae\u521d\u6b21\u63a5\u89e6\u7684\u7528\u6237\u5148\u5728\u6d4b\u8bd5\u73af\u5883\u4e2d\u53cd\u590d\u7ec3\u4e60\uff0c\u719f\u6089\u6545\u969c\u6a21\u62df\u4e0e\u6062\u590d\u6d41\u7a0b\u540e\u518d\u6295\u5165\u751f\u4ea7\u3002\u5982\u679c\u4f60\u9700\u8981\u66f4\u5927\u89c4\u6a21\u7684\u5b58\u50a8\u90e8\u7f72\u6216\u4e13\u4e1a\u8fd0\u7ef4\u652f\u6301\uff0c\u53ef\u4ee5\u8003\u8651 Hostease \u7684[\u72ec\u7acb\u670d\u52a1\u5668](https:\/\/cn.hostease.com\/dedicated-server\/)\u65b9\u6848\uff0c\u5b83\u4eec\u63d0\u4f9b\u5145\u8db3\u7684\u78c1\u76d8\u63d2\u4f4d\u548c\u9ad8\u901f\u5185\u7f51\u5e26\u5bbd\uff0c\u975e\u5e38\u9002\u5408\u627f\u8f7d Ceph \u96c6\u7fa4\u8282\u70b9\u3002<\/p>\n

\u5b9e\u9645\u90e8\u7f72\u4e2d\u7684\u5e38\u89c1\u95ee\u9898\u4e0e\u89e3\u51b3\u65b9\u6848<\/h2>\n

\u5728\u591a\u8282\u70b9 VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09\u73af\u5883\u4e2d\u90e8\u7f72 Ceph \u65f6\uff0c\u7f51\u7edc\u5ef6\u8fdf\u662f\u6700\u5e38\u89c1\u7684\u6027\u80fd\u74f6\u9888\u3002\u7531\u4e8e Ceph \u7684\u6570\u636e\u540c\u6b65\u4f9d\u8d56\u8282\u70b9\u95f4\u7684\u5b9e\u65f6\u901a\u4fe1\uff0c\u5982\u679c VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09\u8282\u70b9\u5206\u5e03\u5728\u4e0d\u540c\u7684\u7269\u7406\u673a\u623f\uff0c\u8de8\u673a\u623f\u7684\u7f51\u7edc\u5ef6\u8fdf\u4f1a\u663e\u8457\u5f71\u54cd\u5199\u5165\u6027\u80fd\u3002\u5efa\u8bae\u5728\u89c4\u5212\u90e8\u7f72\u65f6\uff0c\u4f18\u5148\u9009\u62e9\u540c\u4e00\u673a\u623f\u5185\u7684 VPS \u8282\u70b9\uff0c\u5e76\u5c3d\u91cf\u4f7f\u7528\u540c\u4e00\u53ef\u7528\u533a\u6216\u540c\u4e00\u56ed\u533a\u5185\u7f51\uff0c\u4ece\u57fa\u7840\u8bbe\u65bd\u5c42\u9762\u51cf\u5c11\u7f51\u7edc\u6296\u52a8\u5bf9\u5b58\u50a8\u96c6\u7fa4\u7684\u5f71\u54cd\u3002<\/p>\n

\u78c1\u76d8 I\/O \u662f\u53e6\u4e00\u4e2a\u9700\u8981\u91cd\u70b9\u5173\u6ce8\u7684\u6307\u6807\u3002\u6bcf\u4e2a OSD\uff08\u5bf9\u8c61\u5b58\u50a8\u5b88\u62a4\u8fdb\u7a0b\uff09\u90fd\u4f1a\u5360\u7528\u72ec\u7acb\u7684\u78c1\u76d8\u548c\u4e00\u5b9a\u7684\u5185\u5b58\u8d44\u6e90\u3002\u5728\u8d44\u6e90\u6709\u9650\u7684 VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09\u4e0a\uff0c\u5efa\u8bae\u6bcf\u4e2a OSD \u8fdb\u7a0b\u81f3\u5c11\u5206\u914d 2GB \u5185\u5b58\u548c\u4e00\u5757\u72ec\u7acb\u7684 SSD \u78c1\u76d8\u3002\u5982\u679c VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09\u53ea\u6709\u4e00\u5757\u78c1\u76d8\uff0c\u53ef\u4ee5\u901a\u8fc7\u521b\u5efa\u72ec\u7acb\u5206\u533a\u7684\u65b9\u5f0f\u6765\u6a21\u62df\u591a OSD \u90e8\u7f72\uff0c\u4f46\u9700\u8981\u6ce8\u610f\u5206\u533a\u4e4b\u95f4\u7684 I\/O \u7ade\u4e89\u95ee\u9898\u3002<\/p>\n

\u76d1\u63a7\u65b9\u9762\uff0cCeph \u81ea\u5e26\u7684 ceph status<\/code> \u548c ceph health detail<\/code> \u547d\u4ee4\u53ef\u4ee5\u5feb\u901f\u4e86\u89e3\u96c6\u7fa4\u72b6\u6001\u3002\u5bf9\u4e8e\u957f\u671f\u8fd0\u7ef4\uff0c\u5efa\u8bae\u90e8\u7f72 Ceph Dashboard \u6216\u914d\u5408 Prometheus + Grafana \u642d\u5efa\u53ef\u89c6\u5316\u76d1\u63a7\u9762\u677f\uff0c\u91cd\u70b9\u5173\u6ce8 OSD \u7684\u8bfb\u5199\u5ef6\u8fdf\u3001PG\uff08\u5f52\u7f6e\u7ec4\uff09\u7684\u72b6\u6001\u5206\u5e03\u4ee5\u53ca\u96c6\u7fa4\u7684\u6574\u4f53\u5bb9\u91cf\u4f7f\u7528\u7387\u3002\u5f53\u96c6\u7fa4\u51fa\u73b0 degraded \u6216 undersized \u72b6\u6001\u65f6\uff0c\u9700\u8981\u7acb\u5373\u6392\u67e5\u6545\u969c\u8282\u70b9\u5e76\u53ca\u65f6\u66ff\u6362\u3002<\/p>\n

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