–
pacemaker
–
安装操作：
yum install pacemaker -y corosync
yum install -y crmsh-1.2.6-0.rc2.2.1.x86_64.rpm pssh-2.3.1-2.1.x86_64.rpm
cd /etc/corosync/
cp corosync.conf.example corosync.conf
vim corosync.conf ##编辑配置文件
totem {
version: 2
secauth: off
threads: 0
interface {
ringnumber: 0
bindnetaddr: 172.25.33.0 ##监控网段
mcastaddr: 226.94.1.33 ##多播地址
mcastport: 5438 ##多播端口
ttl: 1
}
}
service { ##添加的服务
name: pacemaker
ver:0
}
scp corosync.conf server4:/etc/corosync/ ##将配置文件复制到另一节点
/etc/init.d/corosync start ##两边节点都开启服务
[root@server1 corosync]# crm configure show
[root@server1 corosync]# crm
crm(live)# configure
crm(live)configure# property stonith-enabled=false
crm(live)configure# commit
crm(live)configure# bye
[root@server1 corosync]# crm_verify -VL ##认证查看
[root@server1 corosync]# crm
crm(live)# configure
crm(live)configure# primitive vip ocf:heartbeat:IPaddr2 params ip=172.25.33.100 cidr_netmask=32 op monitor interval=30s ##添加vip资源
crm(live)configure# commit
crm(live)configure# bye
[root@server1 corosync]#
测试：
[root@server1 corosync]# crm node standby ##关闭该结点
[root@server1 corosync]# crm node online
[root@server4 corosync]# crm_mon ##监控命令查看状态
drbd的配置
server1和server4上做如下操作
先添加同等大小的虚拟磁盘到节点上，保证两台结点的一致性
tar zxf drbd-8.4.2.tar.gz
cd drbd-8.4.2
./configure –enable-spec –with-km
cp ~/drbd-8.4.2.tar.gz /root/rpmbuild/SOURCES/
rpmbuild -bb drbd.spec
yum install kernel-devel -y
rpmbuild -bb drbd-km.spec
cd /root/rpmbuild/RPMS/x86_64/ ##在该目录下生成的rpm包
rpm -ivh * ##全部安装
scp * server4: ##复制到另一台节点上，并安装软件包
cd /etc/drbd.d
vim sqldata.res ##编辑配置文件
resource sqldata {
meta-disk internal;
device /dev/drbd1;
syncer {
verify-alg sha1;
}
on server1 {
disk /dev/vdb; address
172.25.33.1:7789;
}
on server4 {
disk /dev/vdb;
address 172.25.33.4:7789;
}
}
scp sqldata.res server4:/etc/drbd.d/ ##将该文件复制到另一台机器上
drbdadm create-md sqldata ##初始化
/etc/init.d/drbd start ##两个机器上都开启
drbdadm primary sqldata –force ##只有主节点做该操作，强制同步磁盘
mkfs.ext4 /dev/drbd1 ##格式化文件系统
mysql
只有主节点对drbd有操作权限
在主结点上
mount /dev/drbd1 /var/lib/mysql
chown mysql.mysql /var/lib/mysql
/etc/init.d/mysqld start
/etc/init.d/mysqld stop
umount /var/lib/mysql/
drbdadm secondary sqldata ##更改主节点为次节点
在次节点上
drbdadm primary sqldata
mount /dev/drbd1 /var/lib/mysql
chown mysql.mysql /var/lib/mysql
/etc/init.d/mysqld start
/etc/init.d/mysqld stop
umount /var/lib/mysql/
drbdadm secondary sqldata ##更改回次节点
fence配置
检查好物理机，以及虚拟机的的fence配置
添加如下策略
[root@server4 ~]# crm configure show
node server1 \
attributes standby=”off”
node server4 \
attributes standby=”off”
primitive vip ocf:heartbeat:IPaddr2 \
params ip=”172.25.33.100” cidr_netmask=”32” \
op monitor interval=”30s”
primitive vmfence stonith:fence_xvm \
params pcmk_host_map=”server1:vm1;server4:vm4” \ ##添加对应
op monitor interval=”1min”
property $id=”cib-bootstrap-options” \
stonith-enabled=”true” \ ##开启fence
no-quorum-policy=”ignore” \ ##忽略检测最少主机
expected-quorum-votes=”2” \
dc-version=”1.1.10-14.el6-368c726” \
cluster-infrastructure=”classic openais (with plugin)”
测试：
如果内核崩溃，主机可以跳电
[root@server1 ~]# crm
crm(live)# configure
crm(live)configure# primitive DBdata ocf:linbit:drbd params drbd_resource=sqldata op monitor interval=1min
crm(live)configure# ms DBdataclone DBdata meta master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=true
crm(live)configure# commit
WARNING: DBdata: default timeout 20s for start is smaller than the advised 240
WARNING: DBdata: default timeout 20s for stop is smaller than the advised 100
WARNING: DBdata: action monitor not advertised in meta-data, it may not be supported by the RA
crm(live)configure# primitive DBfs ocf:heartbeat:Filesystem params device=/dev/drbd1 directory=/var/lib/mysql fstype=ext4
crm(live)configure# colocation fs_on_drbd inf: DBfs DBdataclone:Master
crm(live)configure# order DBfs-after-DBdata inf: DB
DBdataclone DBfs
crm(live)configure# order DBfs-after-DBdata inf: DBdataclone:promote DBfs:start
crm(live)configure# commit
WARNING: DBfs: default timeout 20s for start is smaller than the advised 60
WARNING: DBfs: default timeout 20s for stop is smaller than the advised 60
crm(live)configure# primitive mysqlDB lsb:mysqld op monitor interval=30s
crm(live)configure# group mysqlservice vip DBfs mysqlDB
INFO: resource references in colocation:fs_on_drbd updated
INFO: resource references in order:DBfs-after-DBdata updated
crm(live)configure# commit
crm(live)configure# show
测试；
可以自由切换
haproxy的基础
yum install haproxy -y
vim /etc/haproxy/haproxy.cfg
global
maxconn 10000
stats socket /var/run/haproxy.stat mode 600 level admin
log 127.0.0.1 local0
uid 200
gid 200
chroot /var/empty
daemon
defaults
mode http
log global
option httplog
option dontlognull
monitor-uri /monitoruri
maxconn 8000
option redispatch
timeout connect 5s
timeout server 5s
timeout client 30s
retries 2
stats uri /admin/stats
stats auth admin:westos
stats refresh 5s
frontend public
bind *:80
acl badhost src 172.25.33.250
acl write method PUT
acl write method POST
use_backend dynamic if write ##读写分离
#http-request deny if badhost
#errorloc 403 http://172.25.33.4 if badhost ##访问错误页面，被重定向
redirect location http://172.25.33.4 if badhost ##只要访问该页面均被重定向
use_backend dynamic if { path_beg /images }
default_backend static
backend static
balance roundrobin
server web1 172.25.33.2:80 check inter 1000
backend dynamic
balance roundrobin
server web2 172.25.33.3:80 check inter 1000
/etc/init.d/haproxy reload ##重新加载配置文件
测试页面：
http：//172.25.33.1/adminstats
