db1.rmohan.com 192.168.1.105
\ndb2.rmohan.com 192.168.1.106
\nAdd a hard disk<\/p>\n
fdisk \/dev\/sdb
\nwget http:\/\/elrepo.org\/elrepo-release-6-4.el6.elrepo.noarch
\nrpm -ivUh elrepo-release-6-4.el6.elrepo.noarch.rpm<\/p>\n
vi \/etc\/yum.repos.d\/elrepo.repo<\/p>\n
Edit \/etc\/yum.repos.d\/elrepo.repo ( change line #8 \u2018enable=0′ )
\nyum –enablerepo=elrepo install drbd83-utils kmod-drbd83
\nyum -y install parted<\/p>\n
partprobe \/dev\/sdb1<\/p>\n
pvcreate \/dev\/sdb1<\/p>\n
vgcreate vg_db \/dev\/sdb1
\nlvcreate -n lv_db -L +50G vg_db
\nlvcreate -n lv_meta -L +10G vg_db
\ngroupadd haclient
\nchgrp haclient \/sbin\/drbdsetup
\nchmod o-x \/sbin\/drbdsetup
\nchmod u+s \/sbin\/drbdsetup
\nchgrp haclient \/sbin\/drbdmeta
\nchmod o-x \/sbin\/drbdmeta
\nchmod u+s \/sbin\/drbdmeta<\/p>\n
<\/p>\n
global {
\nusage-count yes;
\n}<\/p>\n
common {
\nsyncer { rate 300M; }
\n}<\/p>\n
resource r0 {
\nprotocol C;
\nhandlers {
\npri-on-incon-degr “echo o > \/proc\/sysrq-trigger ; halt -f”;
\npri-lost-after-sb “echo o > \/proc\/sysrq-trigger ; halt -f”;
\nlocal-io-error “echo o > \/proc\/sysrq-trigger ; halt -f”;
\noutdate-peer “\/usr\/lib\/heartbeat\/drbd-peer-outdater -t 5”;
\n}<\/p>\n
startup {
\n}<\/p>\n
disk {
\non-io-error detach;
\n}<\/p>\n
net {
\nafter-sb-0pri disconnect;
\nafter-sb-1pri disconnect;
\nafter-sb-2pri disconnect;
\nrr-conflict disconnect;
\n}<\/p>\n
syncer {
\nrate 300M;
\nal-extents 257;
\n}<\/p>\n
on db1.rmohan.com {
\ndevice \/dev\/drbd0;
\ndisk \/dev\/vg_db\/lv_db;
\naddress 192.168.1.105:7788;
\nmeta-disk \/dev\/vg_db\/lv_meta[1];
\n}<\/p>\n
on db2.rmohan.com {
\ndevice \/dev\/drbd0;
\ndisk \/dev\/vg_db\/lv_db;
\naddress 192.168.1.106:7788;
\nmeta-disk \/dev\/vg_db\/lv_meta[1];<\/p>\n","protected":false},"excerpt":{"rendered":"
db1.rmohan.com 192.168.1.105 db2.rmohan.com 192.168.1.106 Add a hard disk<\/p>\n
fdisk \/dev\/sdb wget http:\/\/elrepo.org\/elrepo-release-6-4.el6.elrepo.noarch rpm -ivUh elrepo-release-6-4.el6.elrepo.noarch.rpm<\/p>\n
vi \/etc\/yum.repos.d\/elrepo.repo<\/p>\n
Edit \/etc\/yum.repos.d\/elrepo.repo ( change line #8 \u2018enable=0′ ) yum –enablerepo=elrepo install drbd83-utils kmod-drbd83 yum -y install parted<\/p>\n
partprobe \/dev\/sdb1<\/p>\n
pvcreate \/dev\/sdb1<\/p>\n
vgcreate vg_db \/dev\/sdb1 lvcreate -n lv_db -L +50G vg_db lvcreate -n lv_meta -L +10G vg_db groupadd haclient […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"_links":{"self":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/2865"}],"collection":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2865"}],"version-history":[{"count":1,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/2865\/revisions"}],"predecessor-version":[{"id":2866,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/2865\/revisions\/2866"}],"wp:attachment":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2865"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2865"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}