MySQL 系列（五） 多实例、高可用生产环境实战
本章内容：
- MySQL 多实例
- 简介
- 安装前的配置
- 生产环境屌炸天的脚步
- 初始化登录实现多实例
- 要再增加一个多实例怎么办？解决
- MySQL 高可用
- 部署配置heardbeat
- 部署配置drbd
- heardbeat与drbdde 联合配置
- 部署MySQL
- 联合heardbeat配置MySQL
一、MySQL 多实例
1、简介
什么使多实例呢？
多实例就是在一台机器上开启多个不同的服务端口（如：3306,3307）；
运行多个MySQL服务进程，这些进程通过不同的socket监听不同的服务端口来提供各自的服务。
MySQL多实例共用一个 MySQL 的安装程序，使用不同（也可相同）的 my.cnf 配置文件，启动程序和数据文件。
在提供服务时，多实例 MySQL 在逻辑上是各自独立的，多个实例的本身是根据配置文件对应的设定值，来获得服务器的相关硬件资源多少。
2、安装配置前操作
安装配置前的一些配置少不了
文件的目录最好也规矩，这样才专业
#杀掉进程，避免冲突，删掉启动命令。
pkill mysqld
ps -ef|grep mysql
rm -f /etc/init.d/mysqld # 创建目录,授权
mkdir -p /data/{3306,3307}/data
chown -R mysql.mysql /data/
tree /data/
/data/ #总的多实例根目录
├── 3306 #3306实例的目录
│ └── data #3306实例的数据文件目录
└── 3307 #3307实例的目录
└── data #3307实例的数据文件目录
4 directories, 0 files
3、配置文件
话不多说，直接上生产环境线上的配置文件：
[client]
port = 3306
socket = /data/3306/mysql.sock [mysql]
no-auto-rehash [mysqld]
user = mysql
port = 3306
socket = /data/3306/mysql.sock
basedir = /application/mysql
datadir = /data/3306/data
open_files_limit = 1024
back_log = 600
max_connections = 800
max_connect_errors = 3000
table_cache = 614
external-locking = FALSE
max_allowed_packet =8M
sort_buffer_size = 1M
join_buffer_size = 1M
thread_cache_size = 100
thread_concurrency = 2
query_cache_size = 2M
query_cache_limit = 1M
query_cache_min_res_unit = 2k
#default_table_type = InnoDB
thread_stack = 192K
#transaction_isolation = READ-COMMITTED
tmp_table_size = 2M
max_heap_table_size = 2M
long_query_time = 1
#log_long_format
#log-error = /data/3306/error.log
#log-slow-queries = /data/3306/slow.log
pid-file = /data/3306/mysql.pid
log-bin = /data/3306/mysql-bin
relay-log = /data/3306/relay-bin
relay-log-info-file = /data/3306/relay-log.info
binlog_cache_size = 1M
max_binlog_cache_size = 1M
max_binlog_size = 2M
expire_logs_days = 7
key_buffer_size = 16M
read_buffer_size = 1M
read_rnd_buffer_size = 1M
bulk_insert_buffer_size = 1M
#myisam_sort_buffer_size = 1M
#myisam_max_sort_file_size = 10G
#myisam_max_extra_sort_file_size = 10G
#myisam_repair_threads = 1
#myisam_recover lower_case_table_names = 1
skip-name-resolve
slave-skip-errors = 1032,1062
replicate-ignore-db=mysql server-id = 1 innodb_additional_mem_pool_size = 4M
innodb_buffer_pool_size = 32M
innodb_data_file_path = ibdata1:128M:autoextend
innodb_file_io_threads = 4
innodb_thread_concurrency = 8
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 2M
innodb_log_file_size = 4M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120
innodb_file_per_table = 0
[mysqldump]
quick
max_allowed_packet = 2M [mysqld_safe]
log-error=/data/3306/mysql3306.err
pid-file=/data/3306/mysqld.pid
3306_my.cnf
#!/bin/sh
#Nick Suo
#email:630571017@qq.com
#blog:http://www.cnblogs.com/suoning #init
port=3306
mysql_user="root"
mysql_pwd="suoning"
CmdPath="/application/mysql/bin"
mysql_sock="/data/${port}/mysql.sock"
#startup function
function_start_mysql()
{
if [ ! -e "$mysql_sock" ];then
printf "Starting MySQL...\n"
/bin/sh ${CmdPath}/mysqld_safe --defaults-file=/data/${port}/my.cnf 2>&1 > /dev/null &
else
printf "MySQL is running...\n"
exit
fi
} #stop function
function_stop_mysql()
{
if [ ! -e "$mysql_sock" ];then
printf "MySQL is stopped...\n"
exit
else
printf "Stoping MySQL...\n"
${CmdPath}/mysqladmin -u ${mysql_user} -p${mysql_pwd} -S /data/${port}/mysql.sock shutdown
fi
} #restart function
function_restart_mysql()
{
printf "Restarting MySQL...\n"
function_stop_mysql
sleep 2
function_start_mysql
} case $1 in
start)
function_start_mysql
;;
stop)
function_stop_mysql
;;
restart)
function_restart_mysql
;;
*)
printf "Usage: /data/${port}/mysql {start|stop|restart}\n"
esac
3306_mysql
[client]
port = 3307
socket = /data/3307/mysql.sock [mysql]
no-auto-rehash [mysqld]
user = mysql
port = 3307
socket = /data/3307/mysql.sock
basedir = /application/mysql
datadir = /data/3307/data
open_files_limit = 1024
back_log = 600
max_connections = 800
max_connect_errors = 3000
table_cache = 614
external-locking = FALSE
max_allowed_packet =8M
sort_buffer_size = 1M
join_buffer_size = 1M
thread_cache_size = 100
thread_concurrency = 2
query_cache_size = 2M
query_cache_limit = 1M
query_cache_min_res_unit = 2k
#default_table_type = InnoDB
thread_stack = 192K
#transaction_isolation = READ-COMMITTED
tmp_table_size = 2M
max_heap_table_size = 2M
#long_query_time = 1
#log_long_format
#log-error = /data/3307/error.log
#log-slow-queries = /data/3307/slow.log
pid-file = /data/3307/mysql.pid
#log-bin = /data/3307/mysql-bin
relay-log = /data/3307/relay-bin
relay-log-info-file = /data/3307/relay-log.info
binlog_cache_size = 1M
max_binlog_cache_size = 1M
max_binlog_size = 2M
expire_logs_days = 7
key_buffer_size = 16M
read_buffer_size = 1M
read_rnd_buffer_size = 1M
bulk_insert_buffer_size = 1M
#myisam_sort_buffer_size = 1M
#myisam_max_sort_file_size = 10G
#myisam_max_extra_sort_file_size = 10G
#myisam_repair_threads = 1
#myisam_recover lower_case_table_names = 1
skip-name-resolve
slave-skip-errors = 1032,1062
replicate-ignore-db=mysql server-id = 3 innodb_additional_mem_pool_size = 4M
innodb_buffer_pool_size = 32M
innodb_data_file_path = ibdata1:128M:autoextend
innodb_file_io_threads = 4
innodb_thread_concurrency = 8
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 2M
innodb_log_file_size = 4M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120
innodb_file_per_table = 0
[mysqldump]
quick
max_allowed_packet = 2M [mysqld_safe]
log-error=/data/3307/mysql3307.err
pid-file=/data/3307/mysqld.pid
3307_my.cnf
#!/bin/sh
#Nick Suo
#email:630571017@qq.com
#blog:http://www.cnblogs.com/suoning #init
port=3307
mysql_user="root"
mysql_pwd="suoning"
CmdPath="/application/mysql/bin"
mysql_sock="/data/${port}/mysql.sock"
#startup function
function_start_mysql()
{
if [ ! -e "$mysql_sock" ];then
printf "Starting MySQL...\n"
/bin/sh ${CmdPath}/mysqld_safe --defaults-file=/data/${port}/my.cnf 2>&1 > /dev/null &
else
printf "MySQL is running...\n"
exit
fi
} #stop function
function_stop_mysql()
{
if [ ! -e "$mysql_sock" ];then
printf "MySQL is stopped...\n"
exit
else
printf "Stoping MySQL...\n"
${CmdPath}/mysqladmin -u ${mysql_user} -p${mysql_pwd} -S /data/${port}/mysql.sock shutdown
fi
} #restart function
function_restart_mysql()
{
printf "Restarting MySQL...\n"
function_stop_mysql
sleep 2
function_start_mysql
} case $1 in
start)
function_start_mysql
;;
stop)
function_stop_mysql
;;
restart)
function_restart_mysql
;;
*)
printf "Usage: /data/${port}/mysql {start|stop|restart}\n"
esac
3307_mysql
#上传及拷贝配置文件
cd /home/oldsuo/tools/
rz data.zip
unzip data.zip
Archive: data.zip
creating: data/
creating: data/3306/
inflating: data/3306/my.cnf
inflating: data/3306/mysql
creating: data/3307/
inflating: data/3307/my.cnf
inflating: data/3307/mysql
cp data/3306/my.cnf /data/3306/
cp data/3307/my.cnf /data/3307/
tree /data/
#拷贝启动文件，加执行权限
cp data/3306/mysql /data/3306/
cp data/3307/mysql /data/3307/
chmod +x /data/3306/mysql
chmod +x /data/3307/mysql
tree /data/
/data/
├── 3306
│ ├── data
│ ├── my.cnf
│ └── mysql
└── 3307
├── data
├── my.cnf
└── mysql # 多实例启动文件的启动mysql服务实质：
mysqld_safe --defaults-file=/data/3306/my.cnf 2>&1 > /dev/null &
mysqld_safe --defaults-file=/data/3307/my.cnf 2>&1 > /dev/null &
# 多实例启动文件的停止mysql服务实质：
mysqladmin -u root -poldsuo -S /data/3306/mysql.sock shutdown
mysqladmin -u root -poldsuo -S /data/3307/mysql.sock shutdown
4、初始化启动登录
此时就算完成了，可以初始化并启动了，so easy
#初始化数据库，存放数据路径，自己放自己的目录下
cd /application/mysql/scripts/
./mysql_install_db --basedir=/application/mysql/ --datadir=/data/3306/data --user=mysql
./mysql_install_db --basedir=/application/mysql/ --datadir=/data/3307/data --user=mysql #启动mysql,并检查端口
/data/3306/mysql start
/data/3307/mysql start
netstat -lntup|grep 330[6-7]
tcp 0 0 0.0.0.0:3307 0.0.0.0:* LISTEN 27896/mysqld
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 27174/mysqld #授权，并检查（批量）
find /data/ -type f -name "mysql"
/data/3306/mysql
/data/3307/mysql
find /data/ -type f -name "mysql" -exec chmod 700 {} \;
find /data/ -type f -name "mysql" -exec chown root.root {} \;
find /data/ -type f -name "mysql" -exec ls -l {} \; #设置mysql登陆密码，为nick。
mysqladmin -u root -S /data/3306/mysql.sock password 'nick'
mysqladmin -u root -S /data/3307/mysql.sock password 'nick'
#修改密码
mysqladmin -uroot -pnick password 'oldsuo' -S /data/3306/mysql.sock #多实例数据库的登陆方法，需要参数-S、并指定sock。
mysql -S /data/3306/mysql.sock #不设置密码登陆
mysql -S /data/3307/mysql.sock
mysql -uroot -p -S /data/3306/mysql.sock #设置密码登陆
mysql -uroot -p -S /data/3307/mysql.sock
mysql -uroot -p –hlocalhost -S /data/3306/mysql.sock #远程登陆
mysql -uroot -p –hlocalhost -S /data/3307/mysql.sock
mysql -uroot -p –h 192.168.200.98 -P 3306
mysql -uroot -p –h 192.168.200.98 -P 3307 #创建库，名为d3306、d3307。并检查。
create database d3306;
create database d3307;
show databases;
5、增加一个mysql实例
问题又来了，要增加一个实例怎么弄呢？
其实不难，只需按上面步骤，创建目录，在修改相应配置文件，初始化就ok
#增加一个mysql实例
mkdir -p /data/3308/data
cp /data/3306/my.cnf /data/3308/
cp /data/3306/mysql /data/3308/
chown -R mysql.mysql /data/3308/ cd /data/3308/
vim my.cnf
:g/3306/s//3308/g #批量替换命令
vi mysql
:g/3306/s//3308/g
#初始化数据库
cd /application/mysql/scripts/
./mysql_install_db --basedir=/application/mysql/ --datadir=/data/3308/data --user=mysql
#启动数据库，并检查端口
/data/3308/mysql start
netstat -lntup|grep 330
#设置密码为nick。
mysqladmin -u root -S /data/3308/mysql.sock password 'nick'
#登陆mysql
mysql -uroot -p -S /data/3308//mysql.sock
二、MySQL 高可用双机热备
小编啥也不说了，直接把公司得环境搬上来吧
本文采用 heartbeat + drbd + MySQL 实现MySQL的高可用。
其原理图如下：
1、部署heartbeat3.0
heartbeat 是一个高可用集群架构，它最核心的两个部分为：心跳监测和资源接管，心跳监测是通过HA心跳实时监测，机器之间相互发送报文来告诉对方自己当前的状态，如果在指定的时间内未收到对方发送的报文，那就认为对方以宕机等，这时启动资源接管，使备份服务器变为主服务器，使服务器正常运行。
1.1.配置主机名与hosts
一惯的，需先改主机名与hosts文件
1> data-1-1
hostname data-1-1
sed -i 's#HOSTNAME=localhost.localdomain#HOSTNAME=data-1-1#g' /etc/sysconfig/network
tail -1 /etc/sysconfig/network
/sbin/route add -host 192.168.1.5 dev eth1
echo '/sbin/route add -host 192.168.1.5' >>/etc/rc.local
route -n
#退出重新登录查看修改后主机名
2> data-1-2
hostname data-1-2
sed -i 's#HOSTNAME=localhost.localdomain#HOSTNAME=data-1-2#g' /etc/sysconfig/network
tail -1 /etc/sysconfig/network
/sbin/route add -host 192.168.1.3 dev eth1
echo '/sbin/route add -host 192.168.1.3' >>/etc/rc.local
route -n
[root@localhost ~]# hostname data-1-2
[root@localhost ~]# sed -i 's#HOSTNAME=localhost.localdomain#HOSTNAME=data-1-2#g' /etc/sysconfig/network
[root@localhost ~]# tail -1 /etc/sysconfig/network
HOSTNAME=data-1-2
[root@localhost ~]# /sbin/route add -host 192.168.1.6 dev eth1
[root@localhost ~]# echo '/sbin/route add -host 192.168.1.6' >>/etc/rc.local
[root@localhost ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.6 0.0.0.0 255.255.255.255 UH 0 0 0 eth1
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
192.168.200.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 1003 0 0 eth1
0.0.0.0 192.168.200.6 0.0.0.0 UG 0 0 0 eth0
1.2.下载安装epel包
yum 安装前需先安装 epel 包
mkdir -p /home/oldsuo/tools
cd /home/oldsuo/tools/
sed -i 's#keepcache=0#keepcache=1#g' /etc/yum.conf
wget http://mirrors.opencas.cn/epel/6/i386/epel-release-6-8.noarch.rpm
rpm -ivh epel-release-6-8.noarch.rpm
rpm -qa |grep epel
1.3.安装heartbeat
yum 安装，简单快捷
yum install heartbeat –y
1.4.配置heartbeat
安装完配置，以下是快速配置文档
cd /etc/ha.d/
cp ha.cf ha.cf.ori
cp authkeys authkeys.ori
cp haresources haresources.ori
chmod 600 authkeys vim ha.cf
debugfile /var/log/ha-debug
logfile /var/log/ha-log
logfacility local1 keepalive 2
deadtime 30
warntime 10
initdead 60 #bcast eth1
mcast eth1 225.0.0.1 694 1 0 auto_failback on
node data-1-1
node data-1-2
crm no vim authkeys
auth 1
1 sha1 sui1bian2xie3duo4dian5suibianxieduodian vim haresources
#192.168.1.3
data-1-1 IPaddr::192.168.200.91/24/eth0
#data-1-1 IPaddr::192.168.200.91/24/eth0 httpd #192.168.1.5
data-1-2 IPaddr::192.168.200.94/24/eth0 #mysql master
#picdata-1-1 IPaddr::192.168.1.3/24/eth1 mysqld
#picdata-1-1 IPaddr::192.168.1.3/24/eth1 #mysql slave
#picdata-1-2 IPaddr::192.168.1.5/24/eth1
1.5.配置hosts
检查 hosts，一定要做
#！！！主机名必须与uname -n 显示一致！
cat >>/etc/hosts<<eof
192.168.1.3 data-1-1
192.168.1.5 data-1-2
eof
tail -2 /etc/hosts
ping data-1-1
ping data-1-2
[root@data-1-2 heartbeat-3.0.4]# cat >>/etc/hosts<<eof
> 192.168.1.3 data-1-1
> 192.168.1.5 data-1-2
> eof
[root@data-1-2 heartbeat-3.0.4]# tail -2 /etc/hosts
192.168.1.6 data-1-1
192.168.1.7 data-1-2
[root@data-1-2 heartbeat-3.0.4]# ping data-1-1
64 bytes from data-1-1 (192.168.1.3): icmp_seq=1 ttl=64 time=1.98 ms
[root@data-1-2 heartbeat-3.0.4]# ping data-1-2
64 bytes from data-1-2 (192.168.1.5): icmp_seq=1 ttl=64 time=0.040 ms
1.6.启动heartbeat服务
可以启动啦，啦
/etc/init.d/iptables stop
setenforce 0
/etc/init.d/heartbeat start
ps -ef |grep hear
[root@data-1-1 ha.d]# /etc/init.d/iptables stop
[root@data-1-1 ha.d]# setenforce 0
setenforce: SELinux is disabled
[root@data-1-1 ha.d]# /etc/init.d/heartbeat start
Starting High-Availability services: INFO: Resource is stopped
INFO: Resource is stopped
Done.
[root@data-1-1 ha.d]# ps -ef |grep hear
root 5282 1 0 14:17 ? 00:00:00 heartbeat: master control process
root 5286 5282 0 14:17 ? 00:00:00 heartbeat: FIFO reader
root 5287 5282 0 14:17 ? 00:00:00 heartbeat: write: mcast eth1
root 5288 5282 0 14:17 ? 00:00:00 heartbeat: read: mcast eth1
root 5298 1763 0 14:18 pts/0 00:00:00 grep hear
2、部署 DRBD
DRBD 是一个用软件实现、不共享、服务器之间镜像块块的存储复制解决方案。
在高可用(HA)环境中使用 DRBD，可以代替一个共享的盘阵。
2.1.环境准备
#！！！双网卡，双硬盘
2.2.对磁盘分区
超过2T的磁盘，一般是 parted 分区，支持更好
#parted分区
##data-1-1和data-1-2操作一样！
fdisk –l
parted /dev/xvdb mklabel gpt
parted /dev/xvdb mkpart primary 0 1024
parted /dev/xvdb p
parted /dev/xvdb mkpart primary 1025 2146
parted /dev/xvdb p
[root@data-1-1 ~]# fdisk -l
Disk /dev/xvdb: 2147 MB, 2147483648 bytes
[root@data-1-1 ~]# parted /dev/xvdb mklabel gpt
信息: You may need to update /etc/fstab.
[root@data-1-1 ~]# parted /dev/xvdb mkpart primary 0 1024
警告: The resulting partition is not properly aligned for best performance.
忽略/Ignore/放弃/Cancel? Ignore
信息: You may need to update /etc/fstab.
[root@data-1-1 ~]# parted /dev/xvdb p
Number Start End Size File system Name 标志
1 17.4kB 1024MB 1024MB primary
[root@data-1-1 ~]# parted /dev/xvdb mkpart primary 1025 2146
警告: The resulting partition is not properly aligned for best performance.
忽略/Ignore/放弃/Cancel? Ignore
信息: You may need to update /etc/fstab.
[root@data-1-1 ~]# parted /dev/xvdb p
1 17.4kB 1024MB 1024MB primary
2 1025MB 2146MB 1121MB primary
2.3.安装配置DRBD
以下是快速安装配置文档
1> 安装epel包
mkdir -p /home/oldsuo/tools
cd /home/oldsuo/tools/
sed -i 's#keepcache=0#keepcache=1#g' /etc/yum.conf
wget http://mirror.ventraip.net.au/elrepo/elrepo/el6/x86_64/RPMS/elrepo-release-6-5.el6.elrepo.noarch.rpm
rpm -ivh elrepo-release-6-5.el6.elrepo.noarch.rpm 2> 安装drbd,并加载到内核
yum install drbd kmod-drbd84 -y
rpm -qa |grep drbd cd /home/oldsuo/tools/
export LC_ALL=C
lsmod |grep drbd
modprobe drbd
lsmod |grep drbd
echo "modprobe drbd >/dev/null 2>&1" >/etc/sysconfig/modules/drbd.modules
tail -1 /etc/sysconfig/modules/drbd.modules #!!!报错FATAL: Module drbd not found.
http://blog.sina.com.cn/s/blog_702bd5360101h84d.html
[root@data-1-2 ~]# modprobe drbd
FATAL: Module drbd not found.
解决方法：yum install kernel* -y 重启服务器！
2.4.配置drbd.conf文件
一惯需改配置文件
vim /etc/drbd.conf
global {
usage-count no;
} common {
syncer {
rate 330M;
verify-alg crc32c;
}
} resource data {
protocol C; disk {
on-io-error detach;
} on data-1-1 {
device /dev/drbd0;
disk /dev/xvdb1;
address 192.168.1.6:7788;
meta-disk /dev/xvdb2;
} on data-1-2 {
device /dev/drbd0;
disk /dev/xvdb1;
address 192.168.1.7:7788;
meta-disk /dev/xvdb2;
}
}
2.5.初始化
启动前需初始化
drbdadm create-md data [root@data-1-2 tools]# drbdadm create-md data
initializing activity log
NOT initializing bitmap
Writing meta data...
New drbd meta data block successfully created.
2.6.启动、关闭及查看状态
启动啦，啦，啦，检查状态
drbdadm up data
cat /proc/drbd
drbdadm down data 关闭 [root@data-1-1 tools]# drbdadm up data
[root@data-1-1 tools]# cat /proc/drbd
version: 8.4.6 (api:1/proto:86-101)
GIT-hash: 833d830e0152d1e457fa7856e71e11248ccf3f70 build by phil@Build64R6, 2015-04-09 14:35:00
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:999984
2.7.同步
配置同步
#！！！主上操作！
drbdadm -- --overwrite-data-of-peer primary data
cat /proc/drbd
Primary/Secondary
[root@data-1-1 ~]# drbdadm -- --overwrite-data-of-peer primary data
[root@data-1-1 ~]# cat /proc/drbd
version: 8.4.4 (api:1/proto:86-101)
GIT-hash: 74402fecf24da8e5438171ee8c19e28627e1c98a build by root@data-1-1, 2015-12-11 20:06:46
0: cs:SyncSource ro:Primary/Secondary ds:UpToDate/Inconsistent C r-----
ns:58112 nr:0 dw:0 dr:58784 al:0 bm:3 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:490464
[=>..................] sync'ed: 11.2% (490464/548576)K
finish: 0:00:08 speed: 58,112 (58,112) K/sec
[root@data-1-1 ~]# cat /proc/drbd
version: 8.4.4 (api:1/proto:86-101)
GIT-hash: 74402fecf24da8e5438171ee8c19e28627e1c98a build by root@data-1-1, 2015-12-11 20:06:46
0: cs:SyncSource ro:Primary/Secondary ds:UpToDate/Inconsistent C r-----
ns:517248 nr:0 dw:0 dr:517920 al:0 bm:31 lo:0 pe:146 ua:0 ap:0 ep:1 wo:f oos:34420
[=================>..] sync'ed: 94.1% (34420/548576)K
finish: 0:00:00 speed: 36,724 (36,724) K/sec
[root@data-1-1 ~]# cat /proc/drbd
version: 8.4.4 (api:1/proto:86-101)
GIT-hash: 74402fecf24da8e5438171ee8c19e28627e1c98a build by root@data-1-1, 2015-12-11 20:06:46
0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----
ns:548576 nr:0 dw:0 dr:549248 al:0 bm:34 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
[root@data-1-1 ~]# cat /proc/drbd
version: 8.4.4 (api:1/proto:86-101)
GIT-hash: 74402fecf24da8e5438171ee8c19e28627e1c98a build by root@data-1-1, 2015-12-11 20:06:46
0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----
ns:548576 nr:0 dw:0 dr:549248 al:0 bm:34 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
2.8.挂载磁盘
挂载磁盘
#主！！！
mkfs.ext4 /dev/drbd0
mkdir /data
mount /dev/drbd0 /data/
df -HT
mount /dev/xvdb2 /mnt/
#从！！！
mkdir /data
[root@data-1-1 tools]# mkfs.ext4 /dev/drbd0
mke2fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
62592 inodes, 249995 blocks
12499 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=260046848
8 block groups
32768 blocks per group, 32768 fragments per group
7824 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376 Writing inode tables: done
Creating journal (4096 blocks): done
Writing superblocks and filesystem accounting information: done This filesystem will be automatically checked every 23 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
[root@data-1-1 tools]# mkdir /md1
[root@data-1-1 tools]# mount /dev/drbd0 /md1/
[root@data-1-1 tools]# df -HT
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root ext4 49G 6.4G 40G 14% /
tmpfs tmpfs 187M 0 187M 0% /dev/shm
/dev/xvda1 ext4 500M 85M 389M 18% /boot
/dev/drbd0 ext4 992M 1.3M 939M 1% /data
[root@data-1-1 data]# mount /dev/xvdb2 /mnt/
mount: you must specify the filesystem type
3：配合heartbeat调试drbd服务配置
联合 heartbeat 调试配置 DRBD 服务，两者结合
#两台操作！
/etc/init.d/heartbeat stop
#后面加入内容，不能换行
vim /etc/ha.d/haresources
data-1-1 IPaddr::192.168.200.91/24/eth0 drbddisk::data Filesystem::/dev/drbd0::/data::ext4
/etc/init.d/heartbeat start ###！！！/etc/ha.d/resource.d/IPaddr！！！
###！！！/etc/ha.d/resource.d/drbddisk！！！
4： 部署MySQL
快速安装 MySQL 文档
4.1.解压配置
mkdir -p /home/oldsuo/tools/
cd /home/oldsuo/tools/
rz 上传免编译安装包
ls mysql-5.5.47-linux2.6-x86_64.tar.gz
tar zxf mysql-5.5.47-linux2.6-x86_64.tar.gz
mkdir -p /application/
mv mysql-5.5.47-linux2.6-x86_64 /application/mysql-5.5.47
ln -s /application/mysql-5.5.47/ /application/mysql
ls -l /application/
#检查
[root@data-1-1 tools]# ls -l /application/
lrwxrwxrwx 1 root root 26 Dec 13 13:25 mysql -> /application/mysql-5.7.10/
drwxr-xr-x 9 7161 wheel 4096 Nov 30 03:54 mysql-5.7.10
4.2.创建用户
groupadd mysql
useradd -g mysql -M mysql
4.3.多实例配置
#杀掉进程，避免冲突，删掉启动命令。
pkill mysqld
ps -ef|grep mysql
rm -f /etc/init.d/mysqld #上传及拷贝配置文件
cd /home/oldsuo/tools/
rz data.zip
unzip data.zip
Archive: data.zip
creating: data/
creating: data/3306/
inflating: data/3306/my.cnf
inflating: data/3306/mysql
creating: data/3307/
inflating: data/3307/my.cnf
inflating: data/3307/mysql
cp data/3306/my.cnf /data/3306/
cp data/3307/my.cnf /data/3307/
tree /data/ #拷贝启动文件，加执行权限
cp data/3306/mysql /data/3306/
cp data/3307/mysql /data/3307/
chmod +x /data/3306/mysql
chmod +x /data/3307/mysql
tree /data/
/data/ #总的多实例根目录
├── 3306 #3306实例的目录
│ ├── my.cnf #3306实例的配置文件
│ └── mysql #3306实例的启动文件
└── 3307 #3307实例的目录
├── my.cnf #3307实例的配置文件
└── mysql #3307实例的启动文件
4.3.初始化数据库，启动单实例
#初始化数据库
cd /application/mysql/scripts/
./mysql_install_db --basedir=/application/mysql --datadir=/data/3306/data --user=mysql [root@data-1-1 ~]# /application/mysql/bin/mysql_install_db --basedir=/application/mysql --datadir=/data/3306/data --user=mysql
2015-12-13 13:53:25 [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize
2015-12-13 13:53:33 [WARNING] The bootstrap log isn't empty:
2015-12-13 13:53:33 [WARNING] 2015-12-13T05:53:26.040946Z 0 [Warning] --bootstrap is deprecated. Please consider using --initialize instead
2015-12-13T05:53:26.076433Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000)
2015-12-13T05:53:26.076465Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000) #授权,并做替换
find /data –name mysql.mysql /data
sed -i 's#/usr/local/mysql#/application/mysql#g' /application/mysql/bin/mysqld_safe #启动单实例，并检查
/data/3306/mysql start
sleep 6
lsof -i :3306
5： 配合heartbeat调试MySQL
#两边操作，添加mysql。
cp /data/3306/mysql /etc/ha.d/resource.d/
chmod +x /etc/ha.d/resource.d/
vim /etc/ha.d/haresources
data-1-1 IPaddr::192.168.200.91/24/eth0 drbddisk::data Filesystem::/dev/drbd0::/md1::ext4 mysql