DRBD+HEARTBEAT+NFS简要命令记录
DRBD+HEARTBEAT+NFS简要命令记录前期准备：2个机器分别加磁盘，网络调通1个心跳线同步线
由fdisk -l可以看出有一块大小为10.7G的设备/dev/sdb，对/dev/sdb来创建逻辑卷：
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# pvcreate /dev/sdb #创建pv
Physical volume "/dev/sdb" successfully created
# pvs
PV VG FmtAttr PSizePFree
/dev/sda2VolGroup lvm2 a--19.51g 0
/dev/sdb lvm2 a--10.00g 10.00g
# vgcreate drbd /dev/sdb #创建卷组drbd，将pv加到卷组中
Volume group "drbd" successfully created
# vgs
VG #PV #LV #SN Attr VSizeVFree
VolGroup 1 2 0 wz--n- 19.51g 0
drbd 1 0 0 wz--n- 10.00g 10.00g
# lvcreate -n dbm -L 9G drbd #在卷组drbd中创建lvm逻辑卷
Logical volume "dbm" created
# lvs
LV VG Attr LSizePool Origin Data%Move Log Cpy%Sync Convert
lv_root VolGroup -wi-ao--- 18.51g
lv_swap VolGroup -wi-ao---1.00g
dbm drbd -wi-a----9.00g
# ls /dev/drbd/dbm #查看创建的逻辑卷
/dev/drbd/dbm
一、drbd安装：
[*] 安装epel源 （2台主机一样）
wget http://download.Fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
rpm -ivh epel-release-6-8.noarch.rpm
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
rpm -ivh http://elrepo.org/elrepo-release-6-5.el6.elrepo.noarch.rpm
yum list
[*] 安装DRBD
yum -y install drbd84 kmod-drbd84
modprobe drbd #加载drbd模块报错就重启机器
lsmod | grep drbd
vim /etc/drbd.conf #查看主配置文件
修改全局配置文件 （基本没改）vi /etc/drbd.d/global_common.conf
# DRBD is the result of over a decade of development by LINBIT.
# In case you need professional services for DRBD or have
# feature requests visit http://www.linbit.com
global {
usage-count no;
# minor-count dialog-refresh disable-ip-verification
# cmd-timeout-short 5; cmd-timeout-medium 121; cmd-timeout-long 600;
}
common {
handlers {
# These are EXAMPLE handlers only.
# They may have severe implications,
# like hard resetting the node under certain circumstances.
# Be careful when chosing your poison.
# pri-on-incon-degr "/usr/lib/drbd/notify-pri-on-incon-degr.sh;
/usr/lib/drbd/notify-emergency-reboot.sh; echo b > /proc/sysrq-trigger ; reboot
-f";
# pri-lost-after-sb "/usr/lib/drbd/notify-pri-lost-after-sb.sh;
/usr/lib/drbd/notify-emergency-reboot.sh; echo b > /proc/sysrq-trigger ; reboot
-f";
# local-io-error "/usr/lib/drbd/notify-io-error.sh; /usr/lib/drb
d/notify-emergency-shutdown.sh; echo o > /proc/sysrq-trigger ; halt -f";
# fence-peer "/usr/lib/drbd/crm-fence-peer.sh";
# split-brain "/usr/lib/drbd/notify-split-brain.sh root";
# out-of-sync "/usr/lib/drbd/notify-out-of-sync.sh root";
# before-resync-target "/usr/lib/drbd/snapshot-resync-target-lvm
.sh -p 15 -- -c 16k";
# after-resync-target /usr/lib/drbd/unsnapshot-resync-target-lvm
.sh;
}
startup {
# wfc-timeout degr-wfc-timeout outdated-wfc-timeout wait-after-s
b
}
options {
# cpu-mask on-no-data-accessible
}
disk {
# size on-io-error fencing disk-barrier disk-flushes
# disk-drain md-flushes resync-rate resync-after al-extents
# c-plan-ahead c-delay-target c-fill-target c-max-rate
# c-min-rate disk-timeout
}
net {
# protocol timeout max-epoch-size max-buffers unplug-watermark
# connect-int ping-int sndbuf-size rcvbuf-size ko-count
# allow-two-primaries cram-hmac-alg shared-secret after-sb-0pri
# after-sb-1pri after-sb-2pri always-asbp rr-conflict
# ping-timeout data-integrity-alg tcp-cork on-congestion
# congestion-fill congestion-extents csums-alg verify-alg
# use-rle
cram-hmac-alg "sha1"; #设置加密算法sha1
shared-secret "mydrbdlab"; #设置加密key
}
}
[*] 增加资源
cat /etc/drbd.d/web.res
resource web {
on fuzai01 {
device /dev/drbd0;
disk /dev/mapper/drbd-dbm;
address172.16.100.2:7789;
meta-disk internal;
}
on fuzai02 {
device /dev/drbd0;
disk /dev/mapper/drbd-dbm;
address172.16.100.3:7789;
meta-disk internal;
}
}
[*] 保证两台机器配置文件一样
[*] node1与node2上初始化资源
mknod /dev/drbd0 b 147 0创建DRBD
drbdadm create-md web 执行2次
[*] 设置主节点，同步数据 drbdadm-- --overwrite-data-of-peer primary all
查看状态 service drbd status
[*] 格式化DRBD mkfs.ext4 /dev/drbd0#从节点不用操作
[*] 挂载DRBD mkdir /data #创建数据目录 mount/dev/drbd0 /data
[*] DRBD角色切换 主 停drbd服务，停不了先停heartbeat 或卸载umount /data
从 drbdadm primary web 设置为Primary状态 mount /dev/drbd0 /data/
二、HEARTBEAT
[*] 安装 yum -y install heartbeat
[*]Heartbeat配置共涉及以下几个文件：
/etc/ha.d/ha.cf #主配置文件
/etc/ha.d/haresources #资源文件
/etc/ha.d/authkeys #认证相关
/etc/ha.d/resource.d/killnfsd #nfs启动脚本，由HeartBeat管理
[*]cat /etc/ha.d/ha.cf
debugfile /var/log/ha-debug
logfile /var/log/ha-log
logfacility local0
keepalive 2
deadtime 10
warntime 6
udpport 694
ucast eth0 192.168.1.168
auto_failback off
node fuzai01
node fuzai02
ping 192.168.1.199
respawn hacluster /usr/lib64/heartbeat/ipfail
vi /etc/ha.d/haresources
fuzai01 IPaddr::192.168.1.160/24/eth0 drbddisk::web Filesystem::/dev/drbd0::/data::ext4 killnfsd
vi /etc/ha.d/resource.d/killnfsd别忘加权限chmod 755
vi /etc/ha.d/authkeys
auth 1
1 crc
4.启动服务查看vip
ip a|grep eth0 三、NFS安装
1、安装nfs
# yum install nfs-utils rpcbind -y
# yum install nfs-utils rpcbind -y 2、配置 nfs 共享目录
# cat /etc/exports /data 192.168.1.0/24(rw,sync,no_root_squash,anonuid=0,anongid=0)
# cat /etc/exports /data 192.168.0.0/24(rw,sync,no_root_squash,anonuid=0,anongid=0) 3、启动 rpcbind 和 nfs 服务
/etc/init.d/rpcbind start;chkconfig rpcbind on
/etc/init.d/nfs start;chkconfig nfs off (切到备机后，主机恢复后手工切换回)
四、模拟测试 添加监控nfs服务脚本方法
http://732233048.blog.运维网.com/9323668/1669417
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