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mydrbd.mlist wrote:
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<div class="Section1">
<p class="MsoNormal"><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB">I have
mysql on drbd with heartbeat and dopd.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB">When I do
cold backup on DRBD mysql disk, the
sequence is:<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB"><o:p> </o:p></span></font></p>
<p class="MsoNormal" style="margin-left: 36pt; text-indent: -18pt;"><!--[if !supportLists]--><font
face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB"><span
style="">1)<font face="Times New Roman" size="1"><span
style="font-family: "Times New Roman"; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal; -x-system-font: none;">
</span></font></span></span></font><!--[endif]--><font face="Tahoma"
size="2"><span style="font-size: 10pt; font-family: Tahoma;"
lang="EN-GB">Stop
mysql service<o:p></o:p></span></font></p>
<p class="MsoNormal" style="margin-left: 36pt; text-indent: -18pt;"><!--[if !supportLists]--><font
face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB"><span
style="">2)<font face="Times New Roman" size="1"><span
style="font-family: "Times New Roman"; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal; -x-system-font: none;">
</span></font></span></span></font><!--[endif]--><font face="Tahoma"
size="2"><span style="font-size: 10pt; font-family: Tahoma;"
lang="EN-GB">Do
a backup of data on DRBD disk on another dir always on DRBD disk<o:p></o:p></span></font></p>
<p class="MsoNormal" style="margin-left: 36pt; text-indent: -18pt;"><!--[if !supportLists]--><font
face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB"><span
style="">3)<font face="Times New Roman" size="1"><span
style="font-family: "Times New Roman"; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal; -x-system-font: none;">
</span></font></span></span></font><!--[endif]--><font face="Tahoma"
size="2"><span style="font-size: 10pt; font-family: Tahoma;"
lang="EN-GB">Start
mysql service<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB">mysql
service is not running, so shouldn’t be problems
if I take secondary node down for a while, what you think of this ?</span></font></p>
</div>
</o:smarttagtype></blockquote>
why that way of backup is chhosen ?<br>
better use internal backup capability of mysql server, that not need
server stopping :<br>
so read mysqldump manual for more information ... and decide about
locking tables, extended insert format and other features ...<br>
examples for each of database:<br>
<br>
mysqldump -h 127.0.0.1 -C -u backup_user
--password=backup_user_password --skip-extended-insert
--skip-lock-tables database1 > db1.sql<br>
mysqldump -h 127.0.0.1 -C -u backup_user
--password=backup_user_password --skip-extended-insert
--skip-lock-tables database2 > db2.sql<br>
<br>
or all together in one dump:<br>
<br>
mysqldump -h 127.0.0.1 -C -u backup_user
--password=backup_user_password --skip-extended-insert
--skip-lock-tables --all-databases > all_dbs.sql<br>
<br>
<blockquote
cite="mid:717D04902087D249B74A08F81999FACF9BD8E0@mailserver.apsystems.local"
type="cite"><o:smarttagtype
namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="metricconverter">
<div class="Section1">
<p class="MsoNormal"><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB"><o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB">Can someone
tell me what is the best method to add
command after poit <st1:metricconverter productid="1 in" w:st="on">1 in</st1:metricconverter>
backup script so secondary node will be disconnected ?<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB">backup
should be faster and at the end of backup I
can reconnect secondary and restart mysql service and DRBD resync.</span></font></p>
</div>
</o:smarttagtype></blockquote>
temporarily disable synchronization (stop slow down by disable of
trying network operations to dead node)<br>
drbdadm disconnect all<br>
---<br>
do needed operations on secondary node<br>
---<br>
drbdadm connect all<br>
<blockquote
cite="mid:717D04902087D249B74A08F81999FACF9BD8E0@mailserver.apsystems.local"
type="cite"><o:smarttagtype
namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="metricconverter">
<div class="Section1">
<p class="MsoNormal"><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB"><o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB">All this
should be on the primary (owner of drbd resource),
so I need commands that instruct peer node to disconnect/reconnect.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB">At
reconnection resynchronization should be take
place automatically and straightforward.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB">Thank you.<o:p></o:p></span></font></p>
</div>
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</o:smarttagtype></blockquote>
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