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集群所有mon-store-db丢失恢复.html
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集群所有mon store.db丢失恢复
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<a href="/集群所有mon-store-db丢失恢复.html" class="archive-article-date">
<time datetime="2018-04-02T11:42:38.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2018-04-02</time>
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<p>1、模拟测试环境</p>
<p>三台虚拟机，每台虚拟机一个osd，均是mon节点，mds节点</p>
<pre><code>node1 192.168.1.141
node2 192.168.1.142
node3 192.168.1.143
</code></pre><a id="more"></a>
<p>2、模拟所有节点的mon 数据丢失 </p>
<p>在3个集群节点上停止mon服务，拷贝数据到其他路径</p>
<pre><code>[root@node1 ~]# systemctl stop ceph-mon@node1
[root@node1 ~]# mv /var/lib/ceph/mon/ceph-node1/store.db /tmp/
[root@node2 ~]# systemctl stop ceph-mon@node2
[root@node2 ~]# mv /var/lib/ceph/mon/ceph-node2/store.db/ /tmp/
[root@node3 ~]# systemctl stop ceph-mon@node3
[root@node3 ~]# mv /var/lib/ceph/mon/ceph-node3/store.db/ /tmp
</code></pre><p>3、从osd上获取monmap信息</p>
<p>先停止所有的osd服务，然后每个节点创建临时目录</p>
<pre><code>[root@node1 ~]# systemctl stop ceph-osd@0
[root@node2 ~]# systemctl stop ceph-osd@1
[root@node3 ~]# systemctl stop ceph-osd@2
[root@node1 ~]# mkdir /tmp/monstore
[root@node2 ~]# mkdir /tmp/monstore
[root@node3 ~]# mkdir /tmp/monstore
</code></pre><p>首先在node1上操作，该节点只有一个osd。从这个osd上收集mon相关的数据，存放到/tmp/monstore 目录</p>
<pre><code>[root@node1 ~]# ceph-objectstore-tool --data-path /var/lib/ceph/osd/ceph-0/ --op update-mon-db --mon-store-path /tmp/monstore/
osd.0 : 0 osdmaps trimmed, 31 osdmaps added.
256 pgs added.
</code></pre><p>因为有多台osd机器多个osd的话，就得在每台服务器每个osd上分别执行上面命令。这个目录的数据一定要保持递增的。弄完一台就传递数据到下一台接着弄。</p>
<p>因为本例中有3个节点，每个节点只有一个osd，所以node1上只需要执行一次即可。</p>
<p>传递数据到node2上</p>
<pre><code>[root@node1 store.db]# rsync -avz /tmp/monstore/ node2:/tmp/monstore/
sending incremental file list
./
store.db/
store.db/000003.log
store.db/CURRENT
store.db/LOCK
store.db/MANIFEST-000002
sent 27853 bytes received 95 bytes 18632.00 bytes/sec
total size is 329590 speedup is 11.79
</code></pre><p>在node2节点上从osd上获取mon相关数据</p>
<pre><code>[root@node2 ~]# ceph-objectstore-tool --data-path /var/lib/ceph/osd/ceph-1/ --op update-mon-db --mon-store-path /tmp/monstore/
osd.1 : 0 osdmaps trimmed, 0 osdmaps added.
96 pgs added.
</code></pre><p>传递数据到node3</p>
<pre><code>[root@node2 ~]# rsync -avz /tmp/monstore/ node3:/tmp/monstore/
sending incremental file list
./
store.db/
store.db/000005.sst
store.db/000006.log
store.db/CURRENT
store.db/LOCK
store.db/MANIFEST-000004
sent 37210 bytes received 114 bytes 74648.00 bytes/sec
total size is 132524 speedup is 3.55
</code></pre><p>在node3上获取mon数据</p>
<pre><code>[root@node3 store.db]# ceph-objectstore-tool --data-path /var/lib/ceph/osd/ceph-2/ --op update-mon-db --mon-store-path /tmp/monstore/
osd.2 : 0 osdmaps trimmed, 0 osdmaps added.
82 pgs added.
</code></pre><p>之后，将这个 目录的数据传递到所有需要恢复mon节点上，本例为node1 node2 node3(已有最新数据)</p>
<pre><code>[root@node3 store.db]# rsync -avz /tmp/monstore/ node1:/tmp/monstore/
root@node1's password:
sending incremental file list
store.db/
store.db/000005.sst
store.db/000008.sst
store.db/000009.log
store.db/CURRENT
store.db/MANIFEST-000007
sent 41661 bytes received 117 bytes 16711.20 bytes/sec
total size is 134943 speedup is 3.23
[root@node3 store.db]# rsync -avz /tmp/monstore/ node2:/tmp/monstore/
sending incremental file list
store.db/
store.db/000008.sst
store.db/000009.log
store.db/CURRENT
store.db/MANIFEST-000007
sent 10113 bytes received 98 bytes 20422.00 bytes/sec
total size is 134943 speedup is 13.22
</code></pre><p>4、恢复mon数据</p>
<p>删除之前默认路径存在的数据，或者新建目录</p>
<pre><code>[root@node1 mon]# mkdir /var/lib/ceph/mon/ceph-node1/
[root@node1 ceph-node1]# ceph-monstore-tool /tmp/monstore/ rebuild
[root@node1 ceph-node1]# cp -ra /tmp/monstore/* /var/lib/ceph/mon/ceph-node1/
[root@node1 ceph-node1]# touch /var/lib/ceph/mon/ceph-node1/done
[root@node1 ceph-node1]# touch /var/lib/ceph/mon/ceph-node1/systemd
[root@node1 ceph-node1]# chown ceph:ceph -R /var/lib/ceph/mon/ceph-node1/
</code></pre><p>在node2 node3节点上分别执行上面操作</p>
<p>5、重启mon</p>
<p>所有节点重启mon服务</p>
<pre><code>[root@node1 ceph-node1]# systemctl restart ceph-mon@node1
Job for [email protected] failed because start of the service was attempted too often. See "systemctl status [email protected]" and "journalctl -xe" for details.
To force a start use "systemctl reset-failed [email protected]" followed by "systemctl start [email protected]" again.
[root@node1 ceph-node1]# systemctl reset-failed [email protected]
[root@node1 ceph-node1]# systemctl start [email protected]
</code></pre><p>最终查看mon均没有启动，查看日志显示如下信息：</p>
<pre><code>2018-04-02 17:55:29.419474 7f71222da700 1 leveldb: Compacting 5@0 + 0@1 files
2018-04-02 17:55:29.419975 7f71284cc600 0 mon.node1 does not exist in monmap, will attempt to join an existing cluster
2018-04-02 17:55:29.420158 7f71284cc600 -1 no public_addr or public_network specified, and mon.node1 not present in monmap or ceph.conf
</code></pre><p>提示节点不在monmap表中。</p>
<p>参考之前写的文件 <a href="http://www.idcat.cn/2018/03/27/ceph%E9%9B%86%E7%BE%A4%E6%9B%BF%E6%8D%A2mon%E8%8A%82%E7%82%B9ip%E5%9C%B0%E5%9D%80/" title="更换mon ip地址" target="_blank" rel="noopener">http://www.idcat.cn/2018/03/27/ceph%E9%9B%86%E7%BE%A4%E6%9B%BF%E6%8D%A2mon%E8%8A%82%E7%82%B9ip%E5%9C%B0%E5%9D%80/</a></p>
<p>6、加入monmap</p>
<pre><code>[root@node1 tmp]# monmaptool --create --generate -c /etc/ceph/ceph.conf /tmp/monaaa
monmaptool: monmap file /tmp/monaaa
monmaptool: set fsid to 911c57dc-a930-4da8-ab0e-69f6b6586e3d
monmaptool: writing epoch 0 to /tmp/monaaa (3 monitors)
[root@node1 tmp]# monmaptool --print /tmp/monaaa
monmaptool: monmap file /tmp/monaaa
epoch 0
fsid 911c57dc-a930-4da8-ab0e-69f6b6586e3d
last_changed 2018-04-02 18:25:56.526811
created 2018-04-02 18:25:56.526811
0: 192.168.1.141:6789/0 mon.noname-a
1: 192.168.1.142:6789/0 mon.noname-b
2: 192.168.1.143:6789/0 mon.noname-c
</code></pre><p>可以看到主机名显示为noname-a 等。。</p>
<p>删除主机节点</p>
<pre><code>[root@node1 tmp]# monmaptool --rm noname-a /tmp/monaaa
monmaptool: monmap file /tmp/monaaa
monmaptool: removing noname-a
monmaptool: writing epoch 0 to /tmp/monaaa (2 monitors)
[root@node1 tmp]# monmaptool --rm noname-b /tmp/monaaa
monmaptool: monmap file /tmp/monaaa
monmaptool: removing noname-b
monmaptool: writing epoch 0 to /tmp/monaaa (1 monitors)
[root@node1 tmp]# monmaptool --rm noname-c /tmp/monaaa
monmaptool: monmap file /tmp/monaaa
monmaptool: removing noname-c
monmaptool: writing epoch 0 to /tmp/monaaa (0 monitors)
</code></pre><p>添加新的主机节点</p>
<pre><code>[root@node1 tmp]# monmaptool --add node1 192.168.1.141:6789 /tmp/monaaa
monmaptool: monmap file /tmp/monaaa
monmaptool: writing epoch 0 to /tmp/monaaa (1 monitors)
[root@node1 tmp]# monmaptool --add node2 192.168.1.142:6789 /tmp/monaaa
monmaptool: monmap file /tmp/monaaa
monmaptool: writing epoch 0 to /tmp/monaaa (2 monitors)
[root@node1 tmp]# monmaptool --add node3 192.168.1.143:6789 /tmp/monaaa
monmaptool: monmap file /tmp/monaaa
monmaptool: writing epoch 0 to /tmp/monaaa (3 monitors)
</code></pre><p>将该monaaa文件传到node2 node3 需要恢复mon信息的节点上</p>
<pre><code>[root@node1 tmp]# scp /tmp/monaaa node2:/tmp/
monaaa 100% 481 43.3KB/s 00:00
[root@node1 tmp]# scp /tmp/monaaa node3:/tmp/
monaaa 100% 481 570.6KB/s 00:00
</code></pre><p>在各个节点上注入新的monmap表信息</p>
<pre><code>[root@node1 ~]# ceph-mon -i node1 --inject-monmap /tmp/monaaa
[root@node2 ~]# ceph-mon -i node2 --inject-monmap /tmp/monaaa
[root@node3 ~]# ceph-mon -i node3 --inject-monmap /tmp/monaaa
</code></pre><p>启动mon</p>
<pre><code>[root@node1 ~]# systemctl start ceph-mon@node1
[root@node2 ~]# systemctl start ceph-mon@node2
[root@node3 ~]# systemctl start ceph-mon@node3
</code></pre><p>查看集群状态</p>
<p>[root@node2 ~]# ceph -s</p>
<pre><code>cluster 911c57dc-a930-4da8-ab0e-69f6b6586e3d
health HEALTH_OK
monmap e1: 3 mons at {node1=192.168.1.141:6789/0,node2=192.168.1.142:6789/0,node3=192.168.1.143:6789/0}
election epoch 2, quorum 0,1,2 node1,node2,node3
osdmap e31: 3 osds: 3 up, 3 in
flags sortbitwise,require_jewel_osds
pgmap v1: 256 pgs, 3 pools, 2068 bytes data, 20 objects
0 kB used, 0 kB / 0 kB avail
225 active+clean
28 active+clean+scrubbing
3 active+clean+scrubbing+deep
</code></pre><p>至此 集群恢复OK</p>
<p>参考<a href="http://www.zphj1987.com/2017/04/19/why-rm-object-can-get/" target="_blank" rel="noopener">http://www.zphj1987.com/2017/04/19/why-rm-object-can-get/</a></p>
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<a href="javascript:void(0)" class="js-tag color2">docker</a>
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<a href="javascript:void(0)" class="js-tag color1">flashcache</a>
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<a href="javascript:void(0)" class="js-tag color5">ceph10.2 radosgw hadoop</a>
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<a href="javascript:void(0)" class="js-tag color1">hibench7.0</a>
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<a href="javascript:void(0)" class="js-tag color3">leveldb ceph</a>
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<a href="javascript:void(0)" class="js-tag color5">systemtap</a>
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<a href="javascript:void(0)" class="js-tag color1">tahoe</a>
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<p q-show="jsonFail" style="padding: 20px; font-size: 12px;">
缺失模块。<br/>1、请确保node版本大于6.2<br/>2、在博客根目录（注意不是yilia根目录）执行以下命令：<br/> npm i hexo-generator-json-content --save<br/><br/>
3、在根目录_config.yml里添加配置：
<pre style="font-size: 12px;" q-show="jsonFail">
jsonContent:
meta: false
pages: false
posts:
title: true
date: true
path: true
text: false
raw: false
content: false
slug: false
updated: false
comments: false
link: false
permalink: false
excerpt: false
categories: false
tags: true
</pre>
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<a href="http://www.178pt.com" target="_blank" class="search-title"><i class="icon-quo-left icon"></i>友情链接1</a>
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<div class="aboutme-wrap" id="js-aboutme">很惭愧<br><br>努力学习中<br>谢谢大家</div>
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