MySQL Heartbeat+drbd高可用
MySQL Heartbeat+drbd高可用环境
--具体的配置信息如下所示：
角色 ip地址 主机名字 server-id
primary 心跳及传输IP:192.168.0.51 data-1 1
管理及对外IP:10.0.0.51
VIP：10.0.0.151
standby 心跳及传输IP:192.168.0.52 data-2 1
管理及对外IP:10.0.0.51
VIP：10.0.0.152
Heartbeat安装配置
http://blog.csdn.net/lt53130640688/article/details/50149425
（1）关闭防火墙（两节点执行）
chkconfig iptables off
service iptables stop
service iptables status
setenforce 0
sed -i "s#SELINUX=enforcing#SELINUX=disabled#g" /etc/selinux/config
（2）修改hosts解析文件（两节点执行）
vi /etc/hosts
data-1 192.168.0.51
data-2 192.168.0.52
（4）添加主机路由（两节点分别执行）
--一节点（192.168.0.51）
route add -host 192.168.0.52 dev eth1
echo 'route add -host 192.168.0.52 dev eth1'>>/etc/rc.local
route -n
--二节点（192.168.0.52）
route add -host 192.168.0.51 dev eth1
echo 'route add -host 192.168.0.51 dev eth1'>>/etc/rc.local
route -n
（5）下载epel包，yum安装heartbeat（两节点执行）
--保留rpm包配置 /etc/yum.conf
--163yum源：wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
rpm -ivh epel-release-6-8.noarch.rpm
yum install -y heartbeat*
（6）修改配置文件（两节点执行）
--配置文件模板路径：/usr/share/doc/heartbeat-3.0.4/
配置:
cd /usr/share/doc/heartbeat-3.0.4
cp ha.cf authkeys haresources /etc/ha.d/
--**ha.cf参数配置**
debugfile /var/log/ha-debug
logfile /var/log/ha-log
logfacility local1
keepalive 2
deadtime 30
warntime 10
initdead 60
#bcast eth0 # Linux
#mcast eth0 225.0.0.1 694 1 0
#ucast eth0 192.168.1.2
#使用多播，
mcast eth1 225.0.0.18 694 1 0
auto_failback on
node data-1
node data-2
--**authkeys参数配置（sha1安全级别最高）**
auth 1
1 sha1 43432eeffe03ffi9ekfk0efe000efe0ff0fef0
--**haresources参数配置（资源配置）资源可传递start stop 参数即可**
data-1 IPaddr::10.0.0.151/24/eth0
data-2 IPaddr::10.0.0.152/24/eth0
（7）启动和关闭heartbeat服务
service heartbeat start
service heartbeat stop
service heartbeat status
service heartbeat reload
--chkconfig heartbeat off|on
（8）heartbeat资源接管
--完全释放
/usr/share/heartbeat/hb_standby
--完全接管
/usr/share/heartbeat/hb_takeover
--接管本地
/usr/share/heartbeat/hb_takeover local drbd安装配置
http://blog.csdn.net/lt53130640688/article/details/50150135
存储分区
（1）使用fdisk或者parted分区
fdisk -l
fdisk /dev/sdb
partprobe ##分区信息写入磁盘
##或者采用parted分区，超过2T必须用partprobe分区
parted /dev/sdb mklabel gpt
parted /dev/sdb mkpart primary 0 4800000 #4.9T
parted /dev/sdb mkpart primary 4800001 5800001
parted /dev/sdb mkpart primary 5800002 5804098
parted /dev/sdb p
（2）数据文件盘格式化
mkfs.ext4 /dev/sdb1
#mkfs.ext4 ##备节点不需要格式化
#状态分区不要格式化（大小范围：1-2G）
[root@data-2 ~]# mount /dev/sdb2 /mnt
mount: you must specify the filesystem type
drbd安装
（1）设置环境变量
export LC_ALL=C
（2）编译安装drbd软件
wget http://oss.linbit.com/drbd/8.4/drbd-8.4.4.tar.gz
tar xf drbd-8.4.4.tar.gz
cd drbd-8.4.4
./configure --prefix=/application/drbd8.4.4 --with-km --with-heartbeat --sysconfdir=/etc/
make KDIR=/usr/src/kernels/$(uname -r)/
make install
lsmod |grep drbd
modprobe drbd ##重启失效,加载到内核中
lsmod |grep drbd
echo "modprobe drbd" >>/etc/rc.local ##开机自动加载
#yum install kernel-devel -y
（3）yum安装drbd软件
[root@data-1 /]# rpm -ivh http://elrepo.org/elrepo-release-6-5.el6.elrepo.noarch.rpm
[root@data-2 /]# yum install drbd kmod-drbd84drbd配置
--模板路径
[root@data-1 drbd8.4.4]# ll /etc/drbd.d/
total 4
-rw-r--r-- 1 root root 1836 Dec 1 10:52 global_common.conf
--配置文件（两节点）
[root@data-1 etc]# vi /etc/drbd.conf
global {
usage-count no;
}
common {
syncer {
rate 1000M;
verify-alg crc32c;
}
}
resource data {
protocol C;
disk {
on-io-error detach;
}
on data-1 {
device /dev/drbd0;
disk /dev/sdb1;
address 192.168.0.51:7788;
meta-disk /dev/sdb2[0];
}
on data-2 {
device /dev/drbd0;
disk /dev/sdb1;
address 192.168.0.52:7788;
meta-disk /dev/sdb2[0];
}
}
drbd初始化与启动
drbdadm --help
drbdadmin create-md data
（1）初始化
[root@data-1 ~]# drbdadm create-md data
Writing meta data...
initializing activity log
NOT initializing bitmap
New drbd meta data block successfully created.
（2）创建目录
mkdir -p /application/drbd8.4.4/var/run/drbd
（3）启动资源data
drbdadm up data
--查看同步状态
[root@data-1 ~]# cat /proc/drbd
version: 8.4.4 (api:1/proto:86-101)
GIT-hash: 74402fecf24da8e5438171ee8c19e28627e1c98a build by root@data-1, 2015-12-01 10:52:04
0: cs:Connected ro:Secondary/Secondary ds:Inconsistent/Inconsistent C r-----
ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:6297452
（4）将第一个节点置为primary
drbdadm -- --overwrite-data-of-peer primary data
（5）查看同步完成状态
[root@data-1 data]# cat /proc/drbd
version: 8.4.4 (api:1/proto:86-101)
GIT-hash: 74402fecf24da8e5438171ee8c19e28627e1c98a build by root@data-1, 2015-12-01 10:52:04
0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----
ns:6297520 nr:0 dw:72 dr:6298459 al:3 bm:385 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
（6）磁盘挂载（仅primary节点），Secondary挂载需要先drbdadm down data -->mount /dev/sdb1 /data
mount /dev/drbd0 /dataMySQL编译安装
http://blog.csdn.net/lt53130640688/article/details/49659289
--MySQL参数不能有调用主机名的
yum install ncurses-devel -y
tar xf cmake-2.8.8.tar.gz
cd cmake-2.8.8
./configure
gmake
gmake install
groupadd mysql
useradd mysql -s /sbin/nologin -M -g mysql
tar zxf mysql-5.5.32.tar.gz
cd mysql-5.5.32
cmake -DCMAKE_INSTALL_PREFIX=/application/mysql-5.5.32 \
-DMYSQL_DATADIR=/application/mysql-5.5.32/data \
-DMYSQL_UNIX_ADDR=/application/mysql-5.5.32/tmp/mysql.sock \
-DEXTRA_CHARSETS=gbk,gb2312,utf8,ascii \
-DENABLED_LOCAL_INFILE=ON \
-DWITH_INNOBASE_STORAGE_ENGINE=1 \
-DWITH_FEDERATED_STORAGE_ENGINE=1 \
-DWITH_BLACKHOLE_STORAGE_ENGINE=1 \
-DWITHOUT_EXAMPLE_STORAGE_ENGINE=1 \
-DWITHOUT_PARTITION_STORAGE_ENGINE=1 \
-DWITH_FAST_MUTEXES=1 \
-DWITH_ZLIB=bundled \
-DENABLED_LOCAL_INFILE=1 \
-DWITH_READLINE=1 \
-DWITH_EMBEDDED_SERVER=1 \
-DWITH_DEBUG=0
make && make install
ln -s /application/mysql-5.5.32 /application/mysql
echo 'export PATH=/application/mysql/bin:$PATH' >>/etc/profile
tail -1 /etc/profile
source /etc/profile
cd /
rz -y
unzip -o data.zip
chmod -R 1777 /tmp
chown -R mysql.mysql /data
find /data/ -type f -name "mysql"|xargs chmod +x
find /data/ -type f -name "mysql"|xargs ls -l
find /data/ -type f -name "mysql"|xargs dos2unix
cd /application/mysql/scripts/
./mysql_install_db --basedir=/application/mysql --datadir=/data/3306/data/ --user=mysql
cd /data/3306/
./mysql start
netstat -lntup
/application/mysql/bin/mysqladmin -u root password '123456' -S /data/3306/mysql.sock
cd /data/3306/
./mysql stop
netstat -lntup高可用集群配置
--两节点执行,启动drbd
drbdadm up data
--主节点执行，主节点挂载磁盘
mount /dev/drbd0 /data
--两节点执行，MySQL初始化，删除备节点/data下内容，或者备节点不初始化
mkdir -p /data/3306/data
chown mysql.mysql /data/3306/data
cd /application/mysql/scripts/
./mysql_install_db --basedir=/application/mysql/ --datadir=/data/3306/data/ --user=mysql
--两节点执行，拷贝mysql启动脚本
cp /data/3306/mysql /etc/init.d/
--两节点执行，修改heartbeat资源参数配置
[root@data-1 resource.d]# vi /etc/ha.d/haresources
data-1 IPaddr::10.0.0.151/24/eth0 drbddisk::data Filesystem::/dev/drbd0::/data::ext4 mysql
data-2 IPaddr::10.0.0.152/24/eth
--两节点执行，关闭开机自启动服务
chkconfig mysql off
chkconfig drbd off
chkconfig heartbeat off
chkconfig --list|grep heartbeat
chkconfig --list|grep mysql
chkconfig --list|grep drbd
--主节点执行，关闭mysql服务，解除磁盘挂载，重启heartbeat服务
service mysql stop
service heartbeat stop
service heartbeat start
--备节点启动heartbeat
service heartbeat start
--查看主节点各服务状态
[root@data-1 resource.d]# ip addr|grep eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
inet 10.0.0.51/24 brd 10.0.0.255 scope global eth0
inet 10.0.0.151/24 brd 10.0.0.255 scope global secondary eth0
[root@data-1 resource.d]# mount
/dev/drbd0 on /data type ext4 (rw)
[root@data-1 resource.d]# netstat -lnt
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN
--备节点，其他服务无
[root@data-2 /]# ip addr|grep eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
inet 10.0.0.52/24 brd 10.0.0.255 scope global eth0
inet 10.0.0.152/24 brd 10.0.0.255 scope global secondary eth0主备切换
--主节点，service heartbeat stop
--查看备节点服务状态
[root@data-2 /]# ip addr|grep eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
inet 10.0.0.52/24 brd 10.0.0.255 scope global eth0
inet 10.0.0.152/24 brd 10.0.0.255 scope global secondary eth0
inet 10.0.0.151/24 brd 10.0.0.255 scope global secondary eth0
[root@data-2 /]# mount|grep data
/dev/drbd0 on /data type ext4 (rw)
[root@data-2 /]# cat /proc/drbd
version: 8.4.4 (api:1/proto:86-101)
GIT-hash: 74402fecf24da8e5438171ee8c19e28627e1c98a build by root@data-2, 2015-12-01 10:52:04
0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----
ns:1348 nr:1492 dw:2840 dr:18339 al:9 bm:5 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
[root@data-2 /]# netstat -lntup|grep 3306
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 10082/mysqld
--启动主节点heartbeat服务，资源重新回到主节点
[root@data-1 resource.d]# service heartbeat start
[root@data-1 resource.d]# netstat -lntup|grep 3306
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 17887/mysqld
[root@data-1 resource.d]# mount |grep data
/dev/drbd0 on /data type ext4 (rw)
[root@data-1 resource.d]# cat /proc/drbd
version: 8.4.4 (api:1/proto:86-101)
GIT-hash: 74402fecf24da8e5438171ee8c19e28627e1c98a build by root@data-1, 2015-12-01 10:52:04
0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----
ns:1812 nr:1536 dw:3368 dr:25317 al:10 bm:5 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
[root@data-1 resource.d]# ip addr|grep eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
inet 10.0.0.51/24 brd 10.0.0.255 scope global eth0
inet 10.0.0.151/24 brd 10.0.0.255 scope global secondary eth0
--一节点服务器宕机，资源同样自动切换