{"id":209368,"date":"2025-09-30T08:49:09","date_gmt":"2025-09-30T00:49:09","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209368\/"},"modified":"2025-09-30T08:49:10","modified_gmt":"2025-09-30T00:49:10","slug":"vps-ceph","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209368\/","title":{"rendered":"\u9999\u6e2fVPS\u5b9e\u6218\uff1a\u5feb\u901f\u90e8\u7f72Ceph\u5206\u5e03\u5f0f\u5b58\u50a8"},"content":{"rendered":"<p>\u5728\u5f53\u4eca\u6d77\u91cf\u6570\u636e\u548c\u9ad8\u5e76\u53d1\u8bbf\u95ee\u7684\u65f6\u4ee3\uff0c\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u6210\u4e3a\u7f51\u7ad9\u3001\u5728\u7ebf\u670d\u52a1\u548c\u4f01\u4e1a\u7ea7\u5e94\u7528\u7684\u6838\u5fc3\u7ec4\u6210\u90e8\u5206\u3002\u5bf9\u4e8e\u5728\u4e9a\u6d32\u5730\u533a\u90e8\u7f72\u670d\u52a1\u7684\u7ad9\u957f\u548c\u4f01\u4e1a\u7528\u6237\u6765\u8bf4\uff0c\u9009\u62e9\u4f4d\u4e8e\u9999\u6e2f\u7684VPS\u8282\u70b9\u53ef\u4ee5\u5728\u5ef6\u8fdf\u3001\u5e26\u5bbd\u548c\u5408\u89c4\u6027\u4e0a\u83b7\u5f97\u660e\u663e\u4f18\u52bf\u3002\u672c\u6587\u5c06\u7ed3\u5408\u5728\u9999\u6e2fVPS\u4e0a\u5feb\u901f\u90e8\u7f72Ceph\u5206\u5e03\u5f0f\u5b58\u50a8\u7684\u5b9e\u6218\u7ecf\u9a8c\uff0c\u8986\u76d6\u539f\u7406\u3001\u90e8\u7f72\u8981\u70b9\u3001\u6027\u80fd\u8c03\u4f18\u3001\u5e94\u7528\u573a\u666f\u4e0e\u9009\u8d2d\u5efa\u8bae\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u4e0e\u8fd0\u7ef4\u5de5\u7a0b\u5e08\u5feb\u901f\u843d\u5730\u3002<\/p>\n<h2>Ceph \u57fa\u672c\u539f\u7406\u4e0e\u7ec4\u4ef6\u6982\u89c8<\/h2>\n<p>Ceph \u662f\u4e00\u4e2a\u5f00\u6e90\u3001\u9762\u5411\u5bf9\u8c61\u7684\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\uff0c\u63d0\u4f9b\u5757\u5b58\u50a8\uff08RBD\uff09\u3001\u6587\u4ef6\u7cfb\u7edf\uff08CephFS\uff09\u4e0e\u5bf9\u8c61\u5b58\u50a8\uff08RADOS Gateway\uff09\u3002\u5176\u6838\u5fc3\u7ec4\u4ef6\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>MON\uff08Monitor\uff09<\/strong>\uff1a\u7ef4\u62a4\u96c6\u7fa4\u914d\u7f6e\u4e0e\u5fc3\u8df3\uff0c\u81f3\u5c11\u90e8\u7f72\u5947\u6570\u4e2a\u8282\u70b9\uff083\u62165\uff09\u3002<\/li>\n<li><strong>OSD\uff08Object Storage Daemon\uff09<\/strong>\uff1a\u8d1f\u8d23\u6570\u636e\u5b58\u50a8\u4e0e\u590d\u5236\/\u7ea0\u5220\u7801\uff0c\u662f\u6027\u80fd\u4e0e\u5bb9\u91cf\u7684\u5173\u952e\u3002<\/li>\n<li><strong>MGR\uff08Manager\uff09<\/strong>\uff1a\u63d0\u4f9b\u6307\u6807\u3001\u76d1\u63a7\u4e0e\u7ba1\u7406\u63a5\u53e3\uff0c\u901a\u5e38\u90e8\u7f72\u4e24\u4e2a\u4ee5\u4fdd\u8bc1\u5197\u4f59\u3002<\/li>\n<li><strong>MDS\uff08Metadata Server\uff09<\/strong>\uff1a\u7528\u4e8e CephFS \u5143\u6570\u636e\u670d\u52a1\uff08\u5982\u679c\u9700\u8981\u6587\u4ef6\u7cfb\u7edf\uff09\u3002<\/li>\n<li><strong>RADOSGW<\/strong>\uff1a\u517c\u5bb9 S3\/Swift \u7684\u5bf9\u8c61\u7f51\u5173\uff0c\u5e38\u7528\u4e8e\u63d0\u4f9b\u5bf9\u8c61\u5b58\u50a8\u63a5\u53e3\u3002<\/li>\n<\/ul>\n<h3>\u6570\u636e\u5e03\u5c40\u4e0e\u5bb9\u9519\u7b56\u7565<\/h3>\n<p>Ceph \u4f7f\u7528 CRUSH \u7b97\u6cd5\u51b3\u5b9a\u5bf9\u8c61\u653e\u7f6e\u4f4d\u7f6e\uff0c\u907f\u514d\u4e86\u96c6\u4e2d\u5f0f\u5143\u6570\u636e\u74f6\u9888\u3002\u5e38\u89c1\u7684\u6570\u636e\u4fdd\u62a4\u65b9\u5f0f\u6709\u4e24\u79cd\uff1a<\/p>\n<ul>\n<li><strong>\u590d\u5236\uff08replicated pools\uff09<\/strong>\uff1a\u7b80\u5355\u53ef\u9760\uff0c\u5e38\u89c1\u914d\u7f6e\u4e3a 3x \u526f\u672c\u3002<\/li>\n<li><strong>\u7ea0\u5220\u7801\uff08erasure coded pools\uff09<\/strong>\uff1a\u5b58\u50a8\u6548\u7387\u9ad8\uff0c\u9002\u5408\u51b7\u6570\u636e\u6216\u5bf9\u8c61\u5b58\u50a8\uff0c\u4f46\u5bf9 I\/O \u6709\u989d\u5916\u5f00\u9500\u3002<\/li>\n<\/ul>\n<p>\u5728\u9999\u6e2fVPS\u4e0a\u90e8\u7f72\u65f6\u8981\u8003\u8651\u6bcf\u53f0\u865a\u62df\u673a\u7684\u78c1\u76d8\u7c7b\u578b\uff08SSD\/HDD\uff09\u3001\u672c\u5730\u5b58\u50a8\u4e0e\u4e91\u76d8\u7684\u5dee\u5f02\uff0c\u4ece\u800c\u5728 CRUSH \u89c4\u5219\u4e2d\u5408\u7406\u5b9a\u4e49 failure domain\uff08host\u3001rack\u3001zone\uff09\u3002<\/p>\n<h2>\u5728\u9999\u6e2fVPS\u4e0a\u5feb\u901f\u90e8\u7f72\uff1a\u73af\u5883\u51c6\u5907\u4e0e\u7f51\u7edc\u8bbe\u8ba1<\/h2>\n<p>\u5728 VPS \u73af\u5883\uff08\u5982\u9999\u6e2fVPS\uff09\u4e0a\u90e8\u7f72 Ceph \u4e0e\u5728\u88f8\u91d1\u5c5e\u7565\u6709\u4e0d\u540c\uff0c\u4e3b\u8981\u6311\u6218\u662f\u865a\u62df\u5316\u4ea7\u751f\u7684 I\/O \u7279\u6027\u4e0e\u7f51\u7edc\u9694\u79bb\u3002\u5b9e\u6218\u5efa\u8bae\uff1a<\/p>\n<ul>\n<li>\u9009\u62e9\u6709\u76f4\u8fde\u516c\u7f51\u6216\u79c1\u7f51\u4e92\u901a\u7684 VPS \u8282\u70b9\uff0c<strong>\u63a8\u8350\u4f7f\u7528\u540c\u4e00\u673a\u623f\u7684\u591a\u4e2a VPS \u5b9e\u4f8b\u4f5c\u4e3a MON\/MGR\/OSD \u8282\u70b9<\/strong>\uff0c\u4ee5\u964d\u4f4e\u5ef6\u8fdf\u3002<\/li>\n<li>\u7f51\u7edc\u65b9\u9762\uff0cCeph \u5f3a\u70c8\u4f9d\u8d56\u7f51\u7edc\u5e26\u5bbd\u4e0e\u5ef6\u8fdf\uff0c\u5efa\u8bae\u90e8\u7f72\u72ec\u7acb\u7684\u79c1\u6709\u7f51\u7edc\u6216 VLAN\uff0c\u7528\u4e8e OSD \u4e4b\u95f4\u7684\u5185\u90e8\u6d41\u91cf\u3002<\/li>\n<li>\u65f6\u95f4\u540c\u6b65\uff08NTP\/chrony\uff09\u5fc5\u987b\u4e00\u81f4\uff0c\u907f\u514d\u56e0\u65f6\u95f4\u6f02\u79fb\u5bfc\u81f4\u96c6\u7fa4\u4e0d\u7a33\u5b9a\u3002<\/li>\n<li>\u5185\u6838\u4e0e\u9a71\u52a8\uff1a\u4f7f\u7528\u8f83\u65b0\u7684 Linux \u5185\u6838\u4ee5\u83b7\u5f97\u66f4\u597d\u7684\u84dd\u5b58\uff08BlueStore\uff09\u652f\u6301\u548c NVMe \u6027\u80fd\uff08\u63a8\u8350 4.19+ \u6216 5.x \u7cfb\u5217\uff09\u3002<\/li>\n<\/ul>\n<h3>\u5b58\u50a8\u540e\u7aef\u9009\u62e9\u4e0e OSD \u914d\u7f6e<\/h3>\n<p>Ceph \u7684 BlueStore \u662f\u9ed8\u8ba4\u540e\u7aef\uff0c\u76f4\u63a5\u8bbf\u95ee\u539f\u59cb\u5757\u8bbe\u5907\u6bd4\u901a\u8fc7\u6587\u4ef6\u7cfb\u7edf\u6027\u80fd\u66f4\u597d\u3002\u5e38\u89c1\u505a\u6cd5\uff1a<\/p>\n<ul>\n<li>\u5982\u679c VPS \u63d0\u4f9b\u72ec\u7acb\u78c1\u76d8\u6216\u76f4\u901a NVMe\uff0c\u4f18\u5148\u4f7f\u7528 direct-lvm \u6a21\u5f0f\u521b\u5efa OSD\u3002<\/li>\n<li>\u5bf9\u4e8e\u53ea\u6709\u4e91\u76d8\uff08\u5982\u57fa\u4e8e KVM qcow2 \u6216\u7f51\u7edc\u5757\u8bbe\u5907\uff09\uff0c\u9700\u8981\u8bc4\u4f30 IOPS \u4e0e\u5ef6\u8fdf\uff0c\u907f\u514d\u5c06\u9ad8\u5e76\u53d1\u5199\u5165\u5206\u914d\u5230\u4f4e\u6027\u80fd\u4e91\u78c1\u76d8\u3002<\/li>\n<li>\u4e3a OSD \u5206\u914d\u5408\u9002\u7684 WAL\/DB\uff08RocksDB\uff09\u5206\u533a\uff0c\u4f7f\u7528\u9ad8 IOPS \u7684 NVMe \u4f5c\u4e3a DB \u53ef\u663e\u8457\u63d0\u5347\u5199\u653e\u5927\u4e0e\u5c0f\u6587\u4ef6\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2>\u90e8\u7f72\u65b9\u5f0f\u5bf9\u6bd4\uff1acephadm\u3001ceph-deploy \u4e0e\u624b\u52a8<\/h2>\n<p>\u5f53\u524d Ceph \u63a8\u8350\u4f7f\u7528 cephadm\uff08\u5bb9\u5668\u5316\u90e8\u7f72\uff09\uff0c\u5b83\u4f7f\u7528 systemd-nspawn \u6216 podman\/docker \u7ba1\u7406 Ceph \u5bb9\u5668\u3002\u5bf9\u6bd4\u4e09\u79cd\u65b9\u5f0f\uff1a<\/p>\n<ul>\n<li><strong>cephadm<\/strong>\uff1a\u81ea\u52a8\u5316\u9ad8\uff0c\u9002\u5408\u751f\u4ea7\u73af\u5883\u4e0e\u96c6\u7fa4\u751f\u547d\u5468\u671f\u7ba1\u7406\uff0c\u65b9\u4fbf\u5347\u7ea7\u4e0e\u6269\u5c55\u3002<\/li>\n<li><strong>ceph-deploy<\/strong>\uff1a\u9002\u5408\u5c0f\u89c4\u6a21\u5b9e\u9a8c\u73af\u5883\uff0c\u6613\u4e0a\u624b\u4f46\u9010\u6b65\u88ab\u5e9f\u5f03\u3002<\/li>\n<li><strong>\u624b\u52a8\u90e8\u7f72<\/strong>\uff1a\u7075\u6d3b\u4f46\u6613\u9519\uff0c\u9002\u5408\u6df1\u5ea6\u5b9a\u5236\u4e0e\u5b66\u4e60\u3002<\/li>\n<\/ul>\n<p>\u5728\u9999\u6e2fVPS\u73af\u5883\u4e2d\uff0c\u63a8\u8350\u4f7f\u7528 <strong>cephadm<\/strong> \u7ed3\u5408\u5bb9\u5668\u7f51\u7edc\uff08Calico\/Flannel\uff09\u6216 host \u7f51\u7edc\u6a21\u5f0f\uff0c\u4ee5\u7b80\u5316\u90e8\u7f72\u5e76\u63d0\u9ad8\u9694\u79bb\u6027\u3002<\/p>\n<h2>\u6027\u80fd\u8c03\u4f18\u4e0e\u76d1\u63a7\u5b9e\u8df5<\/h2>\n<p>\u826f\u597d\u7684\u76d1\u63a7\u4e0e\u8c03\u4f18\u662f\u7a33\u5b9a\u8fd0\u884c\u7684\u5173\u952e\uff1a<\/p>\n<ul>\n<li>\u8c03\u6574 Ceph tunables\uff08\u5982 recovery_max_active\u3001osd_recovery_max_active\u3001filestore_max_sync_interval\uff09\u4ee5\u63a7\u5236\u6062\u590d\u8282\u5f8b\uff0c\u907f\u514d\u77ed\u65f6\u95f4\u5185\u5237\u6ee1\u7f51\u7edc\u4e0e IOPS\u3002<\/li>\n<li>\u5408\u7406\u8bbe\u7f6e PG\uff08Placement Groups\uff09\u6570\u91cf\uff1a\u4f7f\u7528 pgcalc \u6839\u636e OSD \u6570\u91cf\u548c\u6c60\u5927\u5c0f\u8ba1\u7b97\u5408\u9002\u7684 PG\uff0c\u907f\u514d\u8fc7\u591a\u5bfc\u81f4 MON \u8d1f\u8f7d\u5347\u9ad8\u6216\u8fc7\u5c11\u5bfc\u81f4\u6570\u636e\u70ed\u70b9\u3002<\/li>\n<li>\u5229\u7528 Prometheus + Grafana \u6536\u96c6 OSD\/Mon\/Mgr \u7684\u6307\u6807\uff0c\u8bbe\u7f6e\u544a\u8b66\uff08OSD down\u3001PG degraded\u3001backfill \u7b49\uff09\u3002<\/li>\n<li>\u5f00\u542f Ceph \u7684 tiering \u4e0e\u7f13\u5b58\uff08\u5982 SSD cache tier\uff09\u4ee5\u63d0\u9ad8\u70ed\u6570\u636e\u7684\u8bfb\u5199\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2>\u5e94\u7528\u573a\u666f\u4e0e\u4f18\u52bf\u5bf9\u6bd4<\/h2>\n<p>Ceph \u5728\u4e0d\u540c\u573a\u666f\u7684\u4f18\u52bf\uff1a<\/p>\n<ul>\n<li>\u4f5c\u4e3a\u5757\u5b58\u50a8\uff08RBD\uff09\u65f6\uff0c\u53ef\u4e3a\u865a\u62df\u5316\u5e73\u53f0\uff08\u5982 KVM\u3001Proxmox\uff09\u63d0\u4f9b\u5f39\u6027\u5377\uff0c\u9002\u5408\u6570\u636e\u5e93\u4e0e\u5bb9\u5668\u5316\u5e94\u7528\u3002<\/li>\n<li>\u901a\u8fc7 RADOSGW \u63d0\u4f9b S3 \u517c\u5bb9\u5bf9\u8c61\u5b58\u50a8\uff0c\u9002\u5408\u5a92\u4f53\u5b58\u50a8\u3001\u5907\u4efd\u4e0e\u5f52\u6863\u3002<\/li>\n<li>CephFS \u9002\u5408\u9700\u8981 POSIX \u652f\u6301\u7684\u5206\u5e03\u5f0f\u6587\u4ef6\u8bbf\u95ee\u573a\u666f\u3002<\/li>\n<\/ul>\n<p>\u4e0e\u4f20\u7edf\u65b9\u6848\uff08\u5982 NFS\u3001iSCSI\u3001GlusterFS\uff09\u6bd4\u8f83\uff0cCeph \u63d0\u4f9b <strong>\u66f4\u597d\u7684\u53ef\u6269\u5c55\u6027\u3001\u5bb9\u9519\u6027\u4e0e\u81ea\u52a8\u6062\u590d\u80fd\u529b<\/strong>\u3002\u5728\u5730\u7406\u5206\u5e03\u4e0a\uff0c\u82e5\u9700\u8981\u5728\u9999\u6e2f\u4e0e\u7f8e\u56fd\u4e4b\u95f4\u505a\u5bb9\u707e\uff0c\u53ef\u4ee5\u5728\u9999\u6e2fVPS \u4e0e\u7f8e\u56fdVPS\/\u7f8e\u56fd\u670d\u52a1\u5668\u4e4b\u95f4\u5efa\u7acb\u8de8\u533a\u57df\u590d\u5236\u6216\u591a\u7ad9\u70b9\u540c\u6b65\u7b56\u7565\uff0c\u4f46\u9700\u6298\u8877\u7f51\u7edc\u5e26\u5bbd\u4e0e\u5ef6\u8fdf\u3002<\/p>\n<h2>\u9009\u8d2d\u5efa\u8bae\uff1a\u5982\u4f55\u5728 Server.HK \u7684\u9999\u6e2fVPS \u4e0a\u843d\u5730 Ceph<\/h2>\n<p>\u9009\u8d2d VPS \u65f6\u7684\u5173\u952e\u8981\u70b9\uff1a<\/p>\n<ul>\n<li><strong>\u78c1\u76d8\u6027\u80fd\u4f18\u5148<\/strong>\uff1a\u4f18\u5148\u9009\u62e9\u63d0\u4f9b\u76f4\u8fde SSD \/ NVMe \u6216\u88f8\u76d8\u76f4\u901a\u7684\u5b9e\u4f8b\uff0c\u907f\u514d\u53ea\u6709\u4f4e IOPS \u7684\u5171\u4eab\u4e91\u76d8\u3002<\/li>\n<li><strong>\u5e26\u5bbd\u4e0e\u79c1\u7f51<\/strong>\uff1a\u786e\u4fdd\u6709\u5145\u8db3\u7684\u5185\u90e8\u5e26\u5bbd\u6216\u79c1\u6709\u7f51\u7edc\u652f\u6301 OSD \u95f4\u5927\u91cf\u590d\u5236\u6d41\u91cf\u3002<\/li>\n<li><strong>\u5185\u5b58\u4e0e CPU<\/strong>\uff1aOSD \u4e0e MON \u90fd\u9700\u8981\u7a33\u5b9a\u7684 CPU \u4e0e\u8db3\u591f\u5185\u5b58\uff0c\u5efa\u8bae\u6bcf\u4e2a OSD \u8282\u70b9 8GB+ \u5185\u5b58\u8d77\u6b65\u3002<\/li>\n<li>\u5bf9\u4e8e\u8de8\u533a\u57df\u4e1a\u52a1\uff0c\u7ed3\u5408\u9999\u6e2fVPS \u4e0e\u7f8e\u56fdVPS \u505a\u8bfb\u5199\u5206\u79bb\u6216\u591a\u6d3b\u8bbe\u8ba1\uff0c\u6839\u636e\u5ef6\u8fdf\u9700\u6c42\u9009\u62e9\u4e3b\/\u5907\u7ad9\u70b9\u3002<\/li>\n<\/ul>\n<p>\u5982\u679c\u76ee\u6807\u662f\u5feb\u901f\u8bd5\u9a8c\uff0c\u53ef\u4ee5\u5728\u4e09\u53f0\u6027\u80fd\u5747\u8861\u7684\u9999\u6e2fVPS \u4e0a\u90e8\u7f72\u6700\u5c0f\u751f\u4ea7\u7ea7 Ceph\uff08\u4e09 MON + \u591a\u4e2a OSD\uff09\uff0c\u540e\u7eed\u518d\u6309\u9700\u6a2a\u5411\u6269\u5c55\u3002<\/p>\n<h2>\u5b89\u5168\u4e0e\u8fd0\u7ef4\u6ce8\u610f\u4e8b\u9879<\/h2>\n<p>\u5728 VPS \u4e0a\u8fd0\u884c Ceph\uff0c\u8981\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n<ul>\n<li>\u9632\u706b\u5899\u7b56\u7565\uff1a\u53ea\u5f00\u653e\u5fc5\u8981\u7aef\u53e3\uff08\u901a\u5e38 6789\/6800-7300 \u8303\u56f4\uff09\uff0c\u5e76\u5c06\u7ba1\u7406\u63a5\u53e3\u9650\u5236\u5728\u79c1\u7f51\u3002<\/li>\n<li>\u5bc6\u94a5\u7ba1\u7406\uff1a\u59a5\u5584\u4fdd\u5b58 Ceph admin keyring\uff0c\u5e76\u91c7\u7528\u6700\u5c0f\u6743\u9650\u7684 client key \u7528\u4e8e\u5e94\u7528\u8bbf\u95ee\u3002<\/li>\n<li>\u5907\u4efd MON \u6570\u636e\u4e0e CRUSH map\uff0c\u5b9a\u671f\u5907\u4efd RBD snapshot \u4ee5\u5e94\u5bf9\u4eba\u8bef\u6216\u6570\u636e\u635f\u574f\u3002<\/li>\n<li>\u5b9a\u671f\u5347\u7ea7\uff1a\u4f7f\u7528 cephadm \u65f6\u53ef\u91c7\u7528 Canary \u6216\u9636\u6bb5\u6027\u5347\u7ea7\u7b56\u7565\uff0c\u5148\u5728\u6d4b\u8bd5\u96c6\u7fa4\u9a8c\u8bc1\u518d\u63a8\u5230\u751f\u4ea7\u3002<\/li>\n<\/ul>\n<p>\u603b\u4e4b\uff0cCeph \u5728\u9999\u6e2fVPS \u4e0a\u65e2\u80fd\u63d0\u4f9b\u4f4e\u5ef6\u8fdf\u7684\u4e9a\u6d32\u7528\u6237\u4f53\u9a8c\uff0c\u4e5f\u80fd\u901a\u8fc7\u5408\u7406\u8bbe\u8ba1\u5b9e\u73b0\u9ad8\u53ef\u7528\u4e0e\u53ef\u6269\u5c55\u7684\u5206\u5e03\u5f0f\u5b58\u50a8\u89e3\u51b3\u65b9\u6848\u3002\u5bf9\u4e8e\u6709\u8de8\u533a\u9700\u6c42\u7684\u7528\u6237\uff0c\u53ef\u4ee5\u7ed3\u5408\u7f8e\u56fdVPS\/\u7f8e\u56fd\u670d\u52a1\u5668 \u505a\u707e\u5907\u6216\u591a\u6d3b\u67b6\u6784\uff0c\u7528\u5408\u9002\u7684 CRUSH \u89c4\u5219\u4e0e\u590d\u5236\u7b56\u7565\u5728\u5404\u7ad9\u70b9\u4e4b\u95f4\u5e73\u8861\u5bb9\u91cf\u4e0e\u53ef\u9760\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u8ba1\u5212\u5728\u9999\u6e2f\u90e8\u7f72 Ceph 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