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MySQL双主+keeplived安装部署说明

2018-06-23 13:28:06来源：未知阅读 ()

MySQL双主+keeplived安装部署说明

一、环境介绍

1.1、规划

序号	类别	版本	主机名	IP	端口	备注
1	OS	CentOS release 6.9 (Final) (minimal)	my1	172.16.210.180	8306	172.16.210.183
2	mysql	mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz	my2	172.16.210.181	8306	172.16.210.183
3	keeplived	keepalived-1.2.7.tar.gz

参考资料：

http://www.cnblogs.com/276815076/p/5649539.html

mysql下载地址：

https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz

keeplived下载地址：

http://www.keepalived.org/software/keepalived-1.2.7.tar.gz

1.2、MySQL双主互备+keepalived高可用架构介绍

　　MySQL主从复制架构可以在很大程度保证MySQL的高可用，在一主多从的架构中还可以利用读写分离将读操作分配到从库中，减轻主库压力。但是在这种架构中，主库出现故障时需要手动将一台从库提升为主库。在对写操作要求较高的环境中，主库故障在主从架构中会成为单点故障。因此需要主主互备架构，避免主节点故障造成写操作失效。

　　在双主互备的架构中，每台MySQL都充当主服务器，同时充当对方的从服务器。在任意一台服务器上的写操作都会被复制到另一台服务器上，从而保证了数据的可靠性。

　　在双主互备的基础上加上keepalived，在其中一台机器上绑定虚拟ip（VIP）。利用vip统一对外服务，可以避免在两个节点同时写数据造成冲突。同时当keepalived主节点发生故障时，keeplived会自动将VIP切换到备节点上，从而实现主服务器的高可用。

二、安装mysql5.7

2.1、主机M1上的操作

2.1.1、安装依赖包

yum  clean all

yum -y update

yum -y install gcc gcc-c++ make autoconf automake ncurses-devel bison ncurses  cmake libaio libaio-devel  boost

yum -y install gcc-c++ gd libxml2-devel libjpeg-devel libpng-devel net-snmp-devel wget telnet vim zip unzip

yum -y install curl-devel libxslt-devel pcre-devel libjpeg libpng libcurl4-openssl-dev

yum -y install libcurl-devel libcurl freetype-config freetype freetype-devel unixODBC libxslt

yum -y install gcc automake autoconf libtool openssl-devel

yum -y install perl-devel perl-ExtUtils-Embed

yum -y install cmake ncurses-devel.x86_64  openldap-devel.x86_64 lrzsz  openssh-clients gcc-g77  bison

yum -y install libmcrypt libmcrypt-devel mhash mhash-devel bzip2 bzip2-devel

yum -y install ntpdate rsync svn  patch  iptables iptables-services

yum -y install libevent libevent-devel  cyrus-sasl cyrus-sasl-devel

yum -y install gd-devel libmemcached-devel memcached git libssl-devel libyaml-devel auto make

yum -y groupinstall "Server Platform Development" "Development tools"

yum -y groupinstall "Development tools"

2.1.2、下载解压

rm -rf /etc/my.cnf  

mkdir -p /opt/mysql

cd /opt/mysql/

wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz

tar -zxf  mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz

cd /usr/local/

ln -s /opt/mysql/mysql-5.7.20-linux-glibc2.12-x86_64  mysql

2.1.3、创建所需要的目录

mkdir  -p /data/mysql/mysql_8306/{data,logs,tmp}

2.1.4、更改权限

groupadd mysql

useradd -g mysql mysql -d /home/mysql -s /sbin/nologin

2.1.5、创建my.cnf

cat >/data/mysql/mysql_8306/my_8306.cnf <<EOF

#my.cnf

[client]

port            = 8306

socket          = /data/mysql/mysql_8306/tmp/mysql_8306.sock

 

[mysql]

#prompt="\u@\h:\p  \R:\m:\s [\d]>"

#tee=/data/mysql/mysql_8306/data/query.log

#prompt="\u@\h:\p  \R:\m:\s [\d]>"

prompt = "[\u@\h][\d]>\_"  

connect_timeout = 5

no-auto-rehash

 

[mysqld]

#misc

user = mysql

basedir = /usr/local/mysql

datadir = /data/mysql/mysql_8306/data

port = 8306

socket = /data/mysql/mysql_8306/tmp/mysql_8306.sock

 

#timeout

interactive_timeout = 300

wait_timeout = 300

 

#character set

character-set-server = utf8

 

open_files_limit = 65535

max_connections = 100

max_connect_errors = 100000

 

skip-name-resolve = 1

#logs

log-output=file

slow_query_log = 1

slow_query_log_file = /data/mysql/mysql_8306/logs/slow.log

log-error = /data/mysql/mysql_8306/logs/error.log

log_error_verbosity = 3

pid-file = mysql.pid

long_query_time = 1

#log-slow-admin-statements = 1

#log-queries-not-using-indexes = 1

log-slow-slave-statements = 1

 

#tmp

tmpdir=/data/mysql/mysql_8306/tmp

event_scheduler = 1

performance_schema = on

max_allowed_packet = 32M

character_set_server = utf8mb4

#character_set_server = utf8

default-time-zone = system

default-storage-engine = InnoDB

#bind_address = 172.16.151.248

explicit_defaults_for_timestamp = 1

 

 

#binlog

binlog_format = row

server-id = 1818306

log-bin = /data/mysql/mysql_8306/logs/mysql-bin

log-bin-index = /data/mysql/mysql_8306/logs/mysql-bin.index

binlog_cache_size = 4M

max_binlog_size = 1G

max_binlog_cache_size = 2G

sync_binlog = 0

expire_logs_days = 90

#replicate-wild-ignore-table=mysql.%
replicate-wild-ignore-table=test.%
replicate-wild-ignore-table=information_schema.%

 

#relay log

skip_slave_start = 1

max_relay_log_size = 1G

relay_log_purge = 1

relay_log_recovery = 1

log_slave_updates

#slave-skip-errors=1032,1053,1062

 

explicit_defaults_for_timestamp=1

#buffers & cache

table_open_cache = 2048

table_definition_cache = 2048

table_open_cache = 2048

max_heap_table_size = 96M

sort_buffer_size = 2M

join_buffer_size = 2M

thread_cache_size = 256

query_cache_size = 0

query_cache_type = 0

query_cache_limit = 256K

query_cache_min_res_unit = 512

thread_stack = 192K

tmp_table_size = 96M

key_buffer_size = 8M

read_buffer_size = 2M

read_rnd_buffer_size = 16M

bulk_insert_buffer_size = 32M

 

#myisam

myisam_sort_buffer_size = 128M

myisam_max_sort_file_size = 10G

myisam_repair_threads = 1

 

#innodb

innodb_buffer_pool_size = 10G

innodb_buffer_pool_instances = 1

innodb_data_file_path = ibdata1:1G:autoextend

innodb_flush_log_at_trx_commit = 2

innodb_log_buffer_size = 64M

innodb_log_file_size = 500M

innodb_log_files_in_group = 3

innodb_max_dirty_pages_pct = 50

innodb_file_per_table = 1

innodb_rollback_on_timeout

innodb_status_file = 1

innodb_io_capacity = 2000

transaction_isolation = READ-COMMITTED

innodb_flush_method = O_DIRECT

gtid_mode = ON

enforce_gtid_consistency = ON

master_info_repository = TABLE

relay-log-info-repository = TABLE

binlog_checksum = NONE

log_slave_updates = ON

 

# Two-Master configure

#server-1

auto-increment-offset = 1

auto-increment-increment = 2

 

#server-2                          

#auto-increment-offset = 2

#auto-increment-increment = 2

 

# semi sync replication settings #

plugin_dir = /usr/local/mysql/lib/plugin #官方版本的路径

#plugin_dir = /usr/local/mysql/lib/mysql/plugin

plugin_load = "rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so" #官方版本的路径

#plugin_load = "validate_password.so;rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"

 

loose_rpl_semi_sync_master_enabled = on     

loose_rpl_semi_sync_master_timeout = 5000      

loose_rpl_semi_sync_master_trace_level = 32   

loose_rpl_semi_sync_master_wait_no_slave = on

loose_rpl_semi_sync_slave_enabled = on      

loose_rpl_semi_sync_slave_trace_level = 32

loose_rpl_semi_sync_master_enabled = 1

loose_rpl_semi_sync_slave_enabled = 1

loose_rpl_semi_sync_master_timeout = 5000

loose_rpl_semi_sync_master_wait_for_slave_count=1

loose_rpl_semi_sync_master_wait_point=AFTER_SYNC

 

slave_preserve_commit_order = 1

slave_transaction_retries = 128

log_timestamps = system

show_compatibility_56 = on

slave_parallel_workers = 16

slave_parallel_type = LOGICAL_CLOCK

 

loose_innodb_numa_interleave = 1

innodb_buffer_pool_dump_pct = 40

innodb_page_cleaners = 16

innodb_undo_log_truncate = 1

innodb_max_undo_log_size = 2G

innodb_purge_rseg_truncate_frequency = 128

#transaction_write_set_extraction = MURMUR32

 

 

# group replication

##log-bin = mysql

##server-id = 618306

##gtid_mode = ON

##enforce_gtid_consistency = ON

##master_info_repository = TABLE

##relay-log-info-repository = TABLE

##binlog_checksum = NONE

##log_slave_updates = ON

##binlog_format = row

##transaction_write_set_extraction=XXHASH64

##loose-group_replication_group_name = '3db33b36-0e51-409f-a61d-c99756e90154'

##loose-group_replication_start_on_boot = off

##loose-group_replication_local_address= "10.125.141.62:28306"  # 不能超过5位数字

##loose-group_replication_group_seeds= "10.125.141.62:28306,10.125.141.62:23307,10.125.141.62:23308"  # 不能超过5位数字

##loose-group_replication_bootstrap_group= off

# loose-group_replication_single_primary_mode=FALSE   ###本次搭建的是mutil_mode

# loose-group_replication_enforce_update_everywhere_checks= TRUE

 

[mysqld_safe]

#malloc-lib=/usr/local/mysql/lib/jmalloc.so

nice=-19

open-files-limit=65535

EOF

2.1.6、修改目录权限

chown -R mysql.mysql /data/mysql/

2.1.7、初始化

/usr/local/mysql/bin/mysqld --defaults-file=/data/mysql/mysql_8306/my_8306.cnf --initialize-insecure &

2.1.8、启动

/usr/local/mysql/bin/mysqld --defaults-file=/data/mysql/mysql_8306/my_8306.cnf &

# 推荐的启动方式

/usr/local/mysql/bin/mysqld_safe --defaults-file=/data/mysql/mysql_8306/my_8306.cnf &

2.1.9、登陆方式

/usr/local/mysql/bin/mysql  -uroot -p -P8306 -S /data/mysql/mysql_8306/tmp/mysql_8306.sock

或者

/usr/local/mysql/bin/mysql  -P8306 -S /data/mysql/mysql_8306/tmp/mysql_8306.sock

2.1.10、创建授权修改密码

set sql_log_bin = 0;

create user 'rpl_user'@'%';

grant replication slave on *.* to 'rpl_user'@'%' identified by 'rpl_user2017';

update mysql.user set authentication_string=password('root2017') where user='root';

flush privileges;

set sql_log_bin = 1;

reset  master ; reset slave all;

2.1.11、change master

CHANGE MASTER TO MASTER_HOST='172.16.210.181',MASTER_USER='rpl_user',

MASTER_PASSWORD='rpl_user2017',MASTER_PORT=8306,

MASTER_CONNECT_RETRY=10,MASTER_AUTO_POSITION =1;

 

start slave;

show slave status\G;

2.1.12、设置快捷登陆方式

[root@my1 local]# /usr/local/mysql/bin/mysql_config_editor set --host=localhost --login-path=8306_localhost_login \

> --user=root --port=8306  --password --socket=/data/mysql/mysql_8306/tmp/mysql_8306.sock

Enter password:

[root@my1 local]#

 
# 查看

/usr/local/mysql/bin/mysql_config_editor print --all

 

[root@my1 local]# alias mysql.8306.login='/usr/local/mysql/bin/mysql --defaults-file=/data/mysql/mysql_8306/my_8306.cnf --login-path=8306_localhost_login'

2.1.13、快捷关闭数据库

[root@my1 local]#alias mysql.8306.stop='/usr/local/mysql/bin/mysqladmin --login-path=8306_localhost_login shutdown'

2.1.14、加入备忘录

[root@my1 ~]# cat  >>/root/.bashrc <<EOF

alias mysql.8306.start='/usr/local/mysql/bin/mysqld_safe --defaults-file=/data/mysql/mysql_8306/my_8306.cnf &'

alias mysql.8306.login='/usr/local/mysql/bin/mysql --defaults-file=/data/mysql/mysql_8306/my_8306.cnf --login-path=8306_localhost_login'

alias mysql.8306.stop='/usr/local/mysql/bin/mysqladmin --login-path=8306_localhost_login shutdown'

EOF


[root@my1 ~]# source /root/.bash_profile

2.1.15、备份脚本

[root@my1 ~]# cat /root/all_database.sh

#!/bin/bash

/usr/local/mysql/bin/mysqldump --login-path=8306_localhost_login -R -E --triggers -e --max_allowed_packet=16777216 --net_buffer_length=16384  --master-data=2 --single-transaction --all-databases --quick  | gzip >/root/all_database_bak_`date +%Y-%m-%d_%H_%M_%S`.sql.gz

[root@my1 ~]#

2.2、主机M2上的操作

2.2.1、安装依赖包

yum  clean all

yum -y update

yum -y install gcc gcc-c++ make autoconf automake ncurses-devel bison ncurses  cmake libaio libaio-devel  boost

yum -y install gcc-c++ gd libxml2-devel libjpeg-devel libpng-devel net-snmp-devel wget telnet vim zip unzip

yum -y install curl-devel libxslt-devel pcre-devel libjpeg libpng libcurl4-openssl-dev

yum -y install libcurl-devel libcurl freetype-config freetype freetype-devel unixODBC libxslt

yum -y install gcc automake autoconf libtool openssl-devel

yum -y install perl-devel perl-ExtUtils-Embed

yum -y install cmake ncurses-devel.x86_64  openldap-devel.x86_64 lrzsz  openssh-clients gcc-g77  bison

yum -y install libmcrypt libmcrypt-devel mhash mhash-devel bzip2 bzip2-devel

yum -y install ntpdate rsync svn  patch  iptables iptables-services

yum -y install libevent libevent-devel  cyrus-sasl cyrus-sasl-devel

yum -y install gd-devel libmemcached-devel memcached git libssl-devel libyaml-devel auto make

yum -y groupinstall "Server Platform Development" "Development tools"

yum -y groupinstall "Development tools"

2.2.2、下载安装

rm -rf /etc/my.cnf  

mkdir -p /opt/mysql

cd /opt/mysql/

wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz

tar -zxf  mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz

cd /usr/local/

ln -s /opt/mysql/mysql-5.7.20-linux-glibc2.12-x86_64  mysql

2.2.3、创建所需要的目录

mkdir  -p /data/mysql/mysql_8306/{data,logs,tmp}

2.2.4、更改权限

groupadd mysql

useradd -g mysql mysql -d /home/mysql -s /sbin/nologin

2.2.5、创建my.cnf

cat >/data/mysql/mysql_8306/my_8306.cnf <<EOF

#my.cnf

[client]

port            = 8306

socket          = /data/mysql/mysql_8306/tmp/mysql_8306.sock

 

[mysql]

#prompt="\u@\h:\p  \R:\m:\s [\d]>"

#tee=/data/mysql/mysql_8306/data/query.log

#prompt="\u@\h:\p  \R:\m:\s [\d]>"

prompt = "[\u@\h][\d]>\_"  

connect_timeout = 5

no-auto-rehash

 

[mysqld]

#misc

user = mysql

basedir = /usr/local/mysql

datadir = /data/mysql/mysql_8306/data

port = 8306

socket = /data/mysql/mysql_8306/tmp/mysql_8306.sock

 

#timeout

interactive_timeout = 300

wait_timeout = 300

 

#character set

character-set-server = utf8

 

open_files_limit = 65535

max_connections = 100

max_connect_errors = 100000

 

skip-name-resolve = 1

#logs

log-output=file

slow_query_log = 1

slow_query_log_file = /data/mysql/mysql_8306/logs/slow.log

log-error = /data/mysql/mysql_8306/logs/error.log

log_error_verbosity = 3

pid-file = mysql.pid

long_query_time = 1

#log-slow-admin-statements = 1

#log-queries-not-using-indexes = 1

log-slow-slave-statements = 1

 

#tmp

tmpdir=/data/mysql/mysql_8306/tmp

event_scheduler = 1

performance_schema = on

max_allowed_packet = 32M

character_set_server = utf8mb4

#character_set_server = utf8

default-time-zone = system

default-storage-engine = InnoDB

#bind_address = 172.16.151.248

explicit_defaults_for_timestamp = 1

 

 

#binlog

binlog_format = row

server-id = 1818306

log-bin = /data/mysql/mysql_8306/logs/mysql-bin

log-bin-index = /data/mysql/mysql_8306/logs/mysql-bin.index

binlog_cache_size = 4M

max_binlog_size = 1G

max_binlog_cache_size = 2G

sync_binlog = 0

expire_logs_days = 90

#replicate-wild-ignore-table=mysql.%
replicate-wild-ignore-table=test.%
replicate-wild-ignore-table=information_schema.%

 

 

#relay log

skip_slave_start = 1

max_relay_log_size = 1G

relay_log_purge = 1

relay_log_recovery = 1

log_slave_updates

#slave-skip-errors=1032,1053,1062

 

explicit_defaults_for_timestamp=1

#buffers & cache

table_open_cache = 2048

table_definition_cache = 2048

table_open_cache = 2048

max_heap_table_size = 96M

sort_buffer_size = 2M

join_buffer_size = 2M

thread_cache_size = 256

query_cache_size = 0

query_cache_type = 0

query_cache_limit = 256K

query_cache_min_res_unit = 512

thread_stack = 192K

tmp_table_size = 96M

key_buffer_size = 8M

read_buffer_size = 2M

read_rnd_buffer_size = 16M

bulk_insert_buffer_size = 32M

 

#myisam

myisam_sort_buffer_size = 128M

myisam_max_sort_file_size = 10G

myisam_repair_threads = 1

 

#innodb

innodb_buffer_pool_size = 10G

innodb_buffer_pool_instances = 1

innodb_data_file_path = ibdata1:1G:autoextend

innodb_flush_log_at_trx_commit = 2

innodb_log_buffer_size = 64M

innodb_log_file_size = 500M

innodb_log_files_in_group = 3

innodb_max_dirty_pages_pct = 50

innodb_file_per_table = 1

innodb_rollback_on_timeout

innodb_status_file = 1

innodb_io_capacity = 2000

transaction_isolation = READ-COMMITTED

innodb_flush_method = O_DIRECT

gtid_mode = ON

enforce_gtid_consistency = ON

master_info_repository = TABLE

relay-log-info-repository = TABLE

binlog_checksum = NONE

log_slave_updates = ON

 

# Two-Master configure

#server-1

#auto-increment-offset = 1

#auto-increment-increment = 2

 

#server-2                          

auto-increment-offset = 2

auto-increment-increment = 2

 

# semi sync replication settings #

plugin_dir = /usr/local/mysql/lib/plugin #官方版本的路径

#plugin_dir = /usr/local/mysql/lib/mysql/plugin

plugin_load = "rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so" #官方版本的路径

#plugin_load = "validate_password.so;rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"

 

loose_rpl_semi_sync_master_enabled = on     

loose_rpl_semi_sync_master_timeout = 5000      

loose_rpl_semi_sync_master_trace_level = 32   

loose_rpl_semi_sync_master_wait_no_slave = on

loose_rpl_semi_sync_slave_enabled = on      

loose_rpl_semi_sync_slave_trace_level = 32

loose_rpl_semi_sync_master_enabled = 1

loose_rpl_semi_sync_slave_enabled = 1

loose_rpl_semi_sync_master_timeout = 5000

loose_rpl_semi_sync_master_wait_for_slave_count=1

loose_rpl_semi_sync_master_wait_point=AFTER_SYNC

 

slave_preserve_commit_order = 1

slave_transaction_retries = 128

log_timestamps = system

show_compatibility_56 = on

slave_parallel_workers = 16

slave_parallel_type = LOGICAL_CLOCK

 

loose_innodb_numa_interleave = 1

innodb_buffer_pool_dump_pct = 40

innodb_page_cleaners = 16

innodb_undo_log_truncate = 1

innodb_max_undo_log_size = 2G

innodb_purge_rseg_truncate_frequency = 128

#transaction_write_set_extraction = MURMUR32

 

 

# group replication

##log-bin = mysql

##server-id = 618306

##gtid_mode = ON

##enforce_gtid_consistency = ON

##master_info_repository = TABLE

##relay-log-info-repository = TABLE

##binlog_checksum = NONE

##log_slave_updates = ON

##binlog_format = row

##transaction_write_set_extraction=XXHASH64

##loose-group_replication_group_name = '3db33b36-0e51-409f-a61d-c99756e90154'

##loose-group_replication_start_on_boot = off

##loose-group_replication_local_address= "10.125.141.62:28306"  # 不能超过5位数字

##loose-group_replication_group_seeds= "10.125.141.62:28306,10.125.141.62:23307,10.125.141.62:23308"  # 不能超过5位数字

##loose-group_replication_bootstrap_group= off

# loose-group_replication_single_primary_mode=FALSE   ###本次搭建的是mutil_mode

# loose-group_replication_enforce_update_everywhere_checks= TRUE

 

[mysqld_safe]

#malloc-lib=/usr/local/mysql/lib/jmalloc.so

nice=-19

open-files-limit=65535

EOF

2.2.6、修改目录权限

chown -R mysql.mysql /data/mysql/

2.2.7、初始化

/usr/local/mysql/bin/mysqld --defaults-file=/data/mysql/mysql_8306/my_8306.cnf --initialize-insecure &

2.2.8、启动

# /usr/local/mysql/bin/mysqld --defaults-file=/data/mysql/mysql_8306/my_8306.cnf &


#  推荐的启动方式

/usr/local/mysql/bin/mysqld_safe --defaults-file=/data/mysql/mysql_8306/my_8306.cnf &

2.2.9、登陆方式

/usr/local/mysql/bin/mysql  -uroot -p -P8306 -S /data/mysql/mysql_8306/tmp/mysql_8306.sock


或者

/usr/local/mysql/bin/mysql  -P8306 -S /data/mysql/mysql_8306/tmp/mysql_8306.sock

2.2.10、创建授权修改密码

set sql_log_bin = 0;

create user 'rpl_user'@'%';

grant replication slave on *.* to 'rpl_user'@'%' identified by 'rpl_user2017';

update mysql.user set authentication_string=password('root2017') where user='root';

flush privileges;

set sql_log_bin = 1;

reset  master ; reset slave all;

2.2.11、change master

CHANGE MASTER TO MASTER_HOST='172.16.210.180',MASTER_USER='rpl_user',

MASTER_PASSWORD='rpl_user2017',MASTER_PORT=8306,

MASTER_CONNECT_RETRY=10,MASTER_AUTO_POSITION =1;

 

start slave;

show slave status\G;

2.2.12、设置快捷登陆方式

[root@my2 local]# /usr/local/mysql/bin/mysql_config_editor set --host=localhost --login-path=8306_localhost_login \

> --user=root --port=8306  --password --socket=/data/mysql/mysql_8306/tmp/mysql_8306.sock

Enter password:

[root@my2 local]#

# 查看

/usr/local/mysql/bin/mysql_config_editor print --all

 

[root@my2 local]# alias mysql.8306.login='/usr/local/mysql/bin/mysql --defaults-file=/data/mysql/mysql_8306/my_8306.cnf --login-path=8306_localhost_login'

2.2.13、快捷关闭数据库

[root@my2 local]#alias mysql.8306.stop='/usr/local/mysql/bin/mysqladmin --login-path=8306_localhost_login shutdown'

2.2.14、加入备忘录

[root@my2 ~]# cat  >>/root/.bashrc <<EOF

alias mysql.8306.start='/usr/local/mysql/bin/mysqld_safe --defaults-file=/data/mysql/mysql_8306/my_8306.cnf &'

alias mysql.8306.login='/usr/local/mysql/bin/mysql --defaults-file=/data/mysql/mysql_8306/my_8306.cnf --login-path=8306_localhost_login'

alias mysql.8306.stop='/usr/local/mysql/bin/mysqladmin --login-path=8306_localhost_login shutdown'

EOF

[root@my2 ~]# source /root/.bash_profile

2.2.15、备份脚本

[root@my2 ~]# cat /root/all_database.sh

#!/bin/bash

/usr/local/mysql/bin/mysqldump --login-path=8306_localhost_login -R -E --triggers -e --max_allowed_packet=16777216 --net_buffer_length=16384  --master-data=2 --single-transaction --all-databases --quick  | gzip >/root/all_database_bak_`date +%Y-%m-%d_%H_%M_%S`.sql.gz

[root@my2 ~]#

三、验证同步情况

3.1、在my1中操作

[root@my1 ~]# mysql.8306.login

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 6

Server version: 5.7.20-log MySQL Community Server (GPL)

 

Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.

 

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

 

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

 

[root@localhost][(none)]> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| mysql              |

| performance_schema |

| sys                |

+--------------------+

4 rows in set (0.00 sec)

 

[root@localhost][(none)]> create database db1;

Query OK, 1 row affected (0.01 sec)

 

[root@localhost][(none)]> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| db1                |

| mysql              |

| performance_schema |

| sys                |

+--------------------+

5 rows in set (0.00 sec)

 

[root@localhost][(none)]>

[root@localhost][(none)]> show slave status\G;

*************************** 1. row ***************************

               Slave_IO_State:

                  Master_Host: 172.16.210.181

                  Master_User: rpl_user

                  Master_Port: 8306

                Connect_Retry: 10

              Master_Log_File: mysql-bin.000001

          Read_Master_Log_Pos: 150

               Relay_Log_File: my1-relay-bin.000003

                Relay_Log_Pos: 4

        Relay_Master_Log_File: mysql-bin.000001

             Slave_IO_Running: Yes

            Slave_SQL_Running: Yes

              Replicate_Do_DB:

          Replicate_Ignore_DB:

           Replicate_Do_Table:

       Replicate_Ignore_Table:

      Replicate_Wild_Do_Table:

  Replicate_Wild_Ignore_Table:

                   Last_Errno: 0

                   Last_Error:

                 Skip_Counter: 0

          Exec_Master_Log_Pos: 150

              Relay_Log_Space: 721

              Until_Condition: None

               Until_Log_File:

                Until_Log_Pos: 0

           Master_SSL_Allowed: No

           Master_SSL_CA_File:

           Master_SSL_CA_Path:

              Master_SSL_Cert:

            Master_SSL_Cipher:

               Master_SSL_Key:

        Seconds_Behind_Master: NULL

Master_SSL_Verify_Server_Cert: No

                Last_IO_Errno: 0

                Last_IO_Error:

               Last_SQL_Errno: 0

               Last_SQL_Error:

  Replicate_Ignore_Server_Ids:

             Master_Server_Id: 0

                  Master_UUID: d14b54b4-de49-11e7-96ea-8ae132e2dda2

             Master_Info_File: mysql.slave_master_info

                    SQL_Delay: 0

          SQL_Remaining_Delay: NULL

      Slave_SQL_Running_State:

           Master_Retry_Count: 86400

                  Master_Bind:

      Last_IO_Error_Timestamp:

     Last_SQL_Error_Timestamp:

               Master_SSL_Crl:

           Master_SSL_Crlpath:

           Retrieved_Gtid_Set:

            Executed_Gtid_Set: ce20a632-de49-11e7-9587-c2c763ed137c:1

                Auto_Position: 1

         Replicate_Rewrite_DB:

                 Channel_Name:

           Master_TLS_Version:

1 row in set (0.00 sec)

 

ERROR:

No query specified

 

[root@localhost][(none)]>

3.2、在my2中操作

[root@my2 local]# mysql.8306.login

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 32

Server version: 5.7.20-log MySQL Community Server (GPL)

 

Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.

 

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

 

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

 

[root@localhost][(none)]> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| db1                |

| mysql              |

| performance_schema |

| sys                |

+--------------------+

5 rows in set (0.00 sec)

 

[root@localhost][(none)]> create database db2;

Query OK, 1 row affected (0.00 sec)

 

[root@localhost][(none)]> show slave status\G;

*************************** 1. row ***************************

               Slave_IO_State: Waiting for master to send event

                  Master_Host: 172.16.210.180

                  Master_User: rpl_user

                  Master_Port: 8306

                Connect_Retry: 10

              Master_Log_File: mysql-bin.000003

          Read_Master_Log_Pos: 303

               Relay_Log_File: my2-relay-bin.000003

                Relay_Log_Pos: 508

        Relay_Master_Log_File: mysql-bin.000003

             Slave_IO_Running: Yes

            Slave_SQL_Running: Yes

              Replicate_Do_DB:

          Replicate_Ignore_DB:

           Replicate_Do_Table:

       Replicate_Ignore_Table:

      Replicate_Wild_Do_Table:

  Replicate_Wild_Ignore_Table:

                   Last_Errno: 0

                   Last_Error:

                 Skip_Counter: 0

          Exec_Master_Log_Pos: 303

              Relay_Log_Space: 910

              Until_Condition: None

               Until_Log_File:

                Until_Log_Pos: 0

           Master_SSL_Allowed: No

           Master_SSL_CA_File:

           Master_SSL_CA_Path:

              Master_SSL_Cert:

            Master_SSL_Cipher:

               Master_SSL_Key:

        Seconds_Behind_Master: 0

Master_SSL_Verify_Server_Cert: No

                Last_IO_Errno: 0

                Last_IO_Error:

               Last_SQL_Errno: 0

               Last_SQL_Error:

  Replicate_Ignore_Server_Ids:

             Master_Server_Id: 1808306

                  Master_UUID: ce20a632-de49-11e7-9587-c2c763ed137c

             Master_Info_File: mysql.slave_master_info

                    SQL_Delay: 0

          SQL_Remaining_Delay: NULL

      Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates

           Master_Retry_Count: 86400

                  Master_Bind:

      Last_IO_Error_Timestamp:

     Last_SQL_Error_Timestamp:

               Master_SSL_Crl:

           Master_SSL_Crlpath:

           Retrieved_Gtid_Set: ce20a632-de49-11e7-9587-c2c763ed137c:1

            Executed_Gtid_Set: ce20a632-de49-11e7-9587-c2c763ed137c:1,

d14b54b4-de49-11e7-96ea-8ae132e2dda2:1

                Auto_Position: 1

         Replicate_Rewrite_DB:

                 Channel_Name:

           Master_TLS_Version:

1 row in set (0.00 sec)

 

ERROR:

No query specified

同步正常

四、同步故障处理举例

# gtid故障处理

模拟在从库删除库，然后再在主库删除该库，报如下错误

 Last_SQL_Error: Error 'Can't drop database 'db1'; database doesn't exist' on query. Default database: 'db1'. Query: 'drop database db1'

  Replicate_Ignore_Server_Ids:

             Master_Server_Id: 628306

                  Master_UUID: 11526eb0-fcbc-11e6-af7d-005056b937e2

             Master_Info_File: mysql.slave_master_info

                    SQL_Delay: 0

          SQL_Remaining_Delay: NULL

      Slave_SQL_Running_State:

           Master_Retry_Count: 86400

                  Master_Bind:

      Last_IO_Error_Timestamp:

     Last_SQL_Error_Timestamp: 170227 15:44:06

               Master_SSL_Crl:

           Master_SSL_Crlpath:

           Retrieved_Gtid_Set: 11526eb0-fcbc-11e6-af7d-005056b937e2:1-2

            Executed_Gtid_Set: 11526eb0-fcbc-11e6-af7d-005056b937e2:1,

1760a7a5-fcbc-11e6-8f14-005056b90358:1

                Auto_Position: 1

         Replicate_Rewrite_DB:

                 Channel_Name:

           Master_TLS_Version:

 

处理方法：

stop slave;

set gtid_next='11526eb0-fcbc-11e6-af7d-005056b937e2:2';

begin;

commit;

set gtid_next='automatic';

start slave;

show slave status\G;

五、配置keeplived实现高可用

参考资料：

http://blog.51cto.com/lizhenliang/1362313

5.1、在my1中的操作

yum install -y pcre-devel openssl-devel popt-devel libnl-* libn*#安装依赖包

#  将keepalived配置成系统服务

wget http://www.keepalived.org/software/keepalived-1.2.7.tar.gz

tar zxvf keepalived-1.2.7.tar.gz

cd keepalived-1.2.7

./configure --prefix=/usr/local/keepalived

make && make install

 

cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/

cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/

mkdir /etc/keepalived/

cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/

cp /usr/local/keepalived/sbin/keepalived /usr/sbin/

chmod +x /etc/init.d/keepalived

 

# server1

cat >/etc/keepalived/keepalived.conf <<EOF

! Configuration File forkeepalived

global_defs {

# notification_email {

# test@sina.com

#  }

# notification_email_from  admin@test.com

# smtp_server 127.0.0.1

# smtp_connect_timeout 30

router_id MYSQL_HA18      #标识，双主相同

 }

vrrp_instance VI_1 {

 state BACKUP           #两台都设置BACKUP

 interface eth0

 virtual_router_id 18       #主备相同

 priority 100           #优先级，backup设置90

 advert_int 1

 nopreempt             #不主动抢占资源，只在master这台优先级高的设置，backup不设置

 authentication {

 auth_type PASS

 auth_pass 1111

 }

 virtual_ipaddress {

 172.16.210.183

 }

}

virtual_server 172.16.210.183 8306 {

 delay_loop 2

 #lb_algo rr              #LVS算法，用不到，我们就关闭了

 #lb_kind DR              #LVS模式，如果不关闭，备用服务器不能通过VIP连接主MySQL

 persistence_timeout 50  #同一IP的连接60秒内被分配到同一台真实服务器

 protocol TCP

 real_server 172.16.210.180 8306 {   #检测本地mysql，backup也要写检测本地mysql

 weight 3

 notify_down /usr/local/keepalived/mysql.sh    #当mysq服down时，执行此脚本，杀死keepalived实现切换

 TCP_CHECK {

 connect_timeout 3    #连接超时

 nb_get_retry 3       #重试次数

 delay_before_retry 3 #重试间隔时间

  }

}

EOF

 

cat >/usr/local/keepalived/mysql.sh <<EOF

#!/bin/bash

pkill keepalived

EOF

chmod +x /usr/local/keepalived/mysql.sh

chmod +x /etc/init.d/keepalived

/etc/init.d/keepalived start

5.2、在my2中的操作

yum install -y pcre-devel openssl-devel popt-devel libnl-* libn*#安装依赖包

 

#  将keepalived配置成系统服务

wget http://www.keepalived.org/software/keepalived-1.2.7.tar.gz

tar zxvf keepalived-1.2.7.tar.gz

cd keepalived-1.2.7

./configure --prefix=/usr/local/keepalived

make && make install

 

cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/

cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/

mkdir /etc/keepalived/

cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/

cp /usr/local/keepalived/sbin/keepalived /usr/sbin/

chmod +x /etc/init.d/keepalived

 

# server2

cat >/etc/keepalived/keepalived.conf <<EOF

cat /etc/keepalived/keepalived.conf

! Configuration File forkeepalived

global_defs {

# notification_email {

# test@sina.com

#  }

# notification_email_from  admin@test.com

# smtp_server 127.0.0.1

# smtp_connect_timeout 30

router_id MYSQL_HA18      #标识，双主相同

 }

vrrp_instance VI_1 {

 state BACKUP           #两台都设置BACKUP

 interface eth0

 virtual_router_id 18       #主备相同

 priority 90           #优先级，backup设置90

 advert_int 1

 #nopreempt             #不主动抢占资源，只在master这台优先级高的设置，backup不设置

 authentication {

 auth_type PASS

 auth_pass 1111

 }

 virtual_ipaddress {

 172.16.210.183

 }

}

virtual_server 172.16.210.183 8306 {

 delay_loop 2

 #lb_algo rr              #LVS算法，用不到，我们就关闭了

 #lb_kind DR              #LVS模式，如果不关闭，备用服务器不能通过VIP连接主MySQL

 persistence_timeout 50  #同一IP的连接60秒内被分配到同一台真实服务器

 protocol TCP

 real_server 172.16.210.181 8306 {   #检测本地mysql，backup也要写检测本地mysql

 weight 3

 notify_down /usr/local/keepalived/mysql.sh    #当mysq服down时，执行此脚本，杀死keepalived实现切换

 TCP_CHECK {

 connect_timeout 3    #连接超时

 nb_get_retry 3       #重试次数

 delay_before_retry 3 #重试间隔时间

  }

}

EOF



cat >/usr/local/keepalived/mysql.sh <<EOF

#!/bin/bash

pkill keepalived

EOF

chmod +x /usr/local/keepalived/mysql.sh

chmod +x /etc/init.d/keepalived

/etc/init.d/keepalived start

六、测试高可用性

6.1、启动my1的keeplive服务

[root@my1 ~]# /etc/init.d/keepalived start

Starting keepalived:                                       [  OK  ]

[root@my1 ~]#

 

[root@my1 ~]# tail  /var/log/messages

Dec 12 15:12:46 localhost Keepalived_healthcheckers[13090]: IPVS: Service not defined

Dec 12 15:12:46 localhost Keepalived_healthcheckers[13090]: Using LinkWatch kernel netlink reflector...

Dec 12 15:12:46 localhost Keepalived_healthcheckers[13090]: Activating healthchecker for service [172.16.210.180]:8306

Dec 12 15:12:46 localhost kernel: IPVS: Scheduler module ip_vs_ not found

Dec 12 15:12:50 localhost Keepalived_vrrp[13091]: VRRP_Instance(VI_1) Transition to MASTER STATE

Dec 12 15:12:51 localhost Keepalived_vrrp[13091]: VRRP_Instance(VI_1) Entering MASTER STATE

Dec 12 15:12:51 localhost Keepalived_vrrp[13091]: VRRP_Instance(VI_1) setting protocol VIPs.

Dec 12 15:12:51 localhost Keepalived_vrrp[13091]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 172.16.210.183

Dec 12 15:12:51 localhost Keepalived_healthcheckers[13090]: Netlink reflector reports IP 172.16.210.183 added

Dec 12 15:12:56 localhost Keepalived_vrrp[13091]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 172.16.210.183

[root@my1 ~]#

6.2、启动my2的keeplived服务

[root@my2 ~]# /etc/init.d/keepalived  start

Starting keepalived:                                       [  OK  ]

[root@my2 ~]#

[root@my2 ~]# tail  /var/log/messages

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: Opening file '/etc/keepalived/keepalived.conf'.

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: Configuration is using : 10232 Bytes

Dec 12 15:15:02 localhost Keepalived_vrrp[26721]: Using LinkWatch kernel netlink reflector...

Dec 12 15:15:02 localhost Keepalived_vrrp[26721]: VRRP_Instance(VI_1) Entering BACKUP STATE

Dec 12 15:15:02 localhost Keepalived_vrrp[26721]: VRRP sockpool: [ifindex(2), proto(112), fd(10,11)]

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: IPVS: Scheduler not found

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: IPVS: Service not defined

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: Using LinkWatch kernel netlink reflector...

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: Activating healthchecker for service [172.16.210.181]:8306

Dec 12 15:15:02 localhost kernel: IPVS: Scheduler module ip_vs_ not found

[root@my2 ~]#

6.3、关闭my1的mysql服务

[root@my1 ~]# ps -ef|grep mysql

root     13119 10926  0 15:15 pts/0    00:00:00 grep mysql

root     19296     1  0 Dec11 ?        00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --defaults-file=/data/mysql/mysql_8306/my_8306.cnf

mysql    20709 19296  0 Dec11 ?        00:00:55 /usr/local/mysql/bin/mysqld --defaults-file=/data/mysql/mysql_8306/my_8306.cnf --basedir=/usr/local/mysql --datadir=/data/mysql/mysql_8306/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/data/mysql/mysql_8306/logs/error.log --open-files-limit=65535 --pid-file=mysql.pid --socket=/data/mysql/mysql_8306/tmp/mysql_8306.sock --port=8306

[root@my1 ~]# mysql.8306.stop

[root@my1 ~]# ps -ef|grep mysql

root     13138 10926  0 15:18 pts/0    00:00:00 grep mysql

[root@my1 ~]#

 

#  查看my1的日志

[root@my1 ~]# tail -20 /var/log/messages  

Dec 12 15:12:46 localhost Keepalived_healthcheckers[13090]: IPVS: Service not defined

Dec 12 15:12:46 localhost Keepalived_healthcheckers[13090]: Using LinkWatch kernel netlink reflector...

Dec 12 15:12:46 localhost Keepalived_healthcheckers[13090]: Activating healthchecker for service [172.16.210.180]:8306

Dec 12 15:12:46 localhost kernel: IPVS: Scheduler module ip_vs_ not found

Dec 12 15:12:50 localhost Keepalived_vrrp[13091]: VRRP_Instance(VI_1) Transition to MASTER STATE

Dec 12 15:12:51 localhost Keepalived_vrrp[13091]: VRRP_Instance(VI_1) Entering MASTER STATE

Dec 12 15:12:51 localhost Keepalived_vrrp[13091]: VRRP_Instance(VI_1) setting protocol VIPs.

Dec 12 15:12:51 localhost Keepalived_vrrp[13091]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 172.16.210.183

Dec 12 15:12:51 localhost Keepalived_healthcheckers[13090]: Netlink reflector reports IP 172.16.210.183 added

Dec 12 15:12:56 localhost Keepalived_vrrp[13091]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 172.16.210.183

Dec 12 15:18:34 localhost Keepalived_healthcheckers[13090]: TCP connection to [172.16.210.180]:8306 failed !!!

Dec 12 15:18:34 localhost Keepalived_healthcheckers[13090]: Removing service [172.16.210.180]:8306 from VS [172.16.210.183]:8306

Dec 12 15:18:34 localhost Keepalived_healthcheckers[13090]: IPVS: Service not defined

Dec 12 15:18:34 localhost Keepalived_healthcheckers[13090]: Executing [/usr/local/keepalived/mysql.sh] for service [172.16.210.180]:8306 in VS [172.16.210.183]:8306

Dec 12 15:18:34 localhost Keepalived_healthcheckers[13090]: Lost quorum 1-0=1 > 0 for VS [172.16.210.183]:8306

Dec 12 15:18:34 localhost Keepalived[13089]: Stopping Keepalived v1.2.7 (12/12,2017)

Dec 12 15:18:34 localhost Keepalived_vrrp[13091]: VRRP_Instance(VI_1) sending 0 priority

Dec 12 15:18:34 localhost Keepalived_vrrp[13091]: VRRP_Instance(VI_1) removing protocol VIPs.

Dec 12 15:18:34 localhost Keepalived_healthcheckers[13090]: Netlink reflector reports IP 172.16.210.183 removed

Dec 12 15:18:34 localhost Keepalived_healthcheckers[13090]: IPVS: No such service

[root@my1 ~]#

6.4、查看my2的日志及其vip情况

[root@my2 ~]# ip add

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN

    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

    inet 127.0.0.1/8 scope host lo

    inet6 ::1/128 scope host

       valid_lft forever preferred_lft forever

2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000

    link/ether 8a:e1:32:e2:dd:a2 brd ff:ff:ff:ff:ff:ff

    inet 172.16.210.181/24 brd 172.16.210.255 scope global eth0

    inet 172.16.210.183/32 scope global eth0

    inet6 fe80::88e1:32ff:fee2:dda2/64 scope link

       valid_lft forever preferred_lft forever

3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000

    link/ether f6:da:a4:00:84:cc brd ff:ff:ff:ff:ff:ff

[root@my2 ~]#

[root@my2 ~]# tail  -30 /var/log/messages

Dec 12 15:15:02 localhost Keepalived_vrrp[26721]: No such interface, eth1

Dec 12 15:15:02 localhost Keepalived_vrrp[26721]: Netlink reflector reports IP 172.16.210.181 added

Dec 12 15:15:02 localhost Keepalived_vrrp[26721]: Netlink reflector reports IP fe80::88e1:32ff:fee2:dda2 added

Dec 12 15:15:02 localhost Keepalived_vrrp[26721]: Registering Kernel netlink reflector

Dec 12 15:15:02 localhost Keepalived_vrrp[26721]: Registering Kernel netlink command channel

Dec 12 15:15:02 localhost Keepalived_vrrp[26721]: Registering gratuitous ARP shared channel

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: Interface queue is empty

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: No such interface, eth1

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: Netlink reflector reports IP 172.16.210.181 added

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: Netlink reflector reports IP fe80::88e1:32ff:fee2:dda2 added

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: Registering Kernel netlink reflector

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: Registering Kernel netlink command channel

Dec 12 15:15:02 localhost Keepalived_vrrp[26721]: Opening file '/etc/keepalived/keepalived.conf'.

Dec 12 15:15:02 localhost Keepalived_vrrp[26721]: Configuration is using : 61661 Bytes

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: Opening file '/etc/keepalived/keepalived.conf'.

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: Configuration is using : 10232 Bytes

Dec 12 15:15:02 localhost Keepalived_vrrp[26721]: Using LinkWatch kernel netlink reflector...

Dec 12 15:15:02 localhost Keepalived_vrrp[26721]: VRRP_Instance(VI_1) Entering BACKUP STATE

Dec 12 15:15:02 localhost Keepalived_vrrp[26721]: VRRP sockpool: [ifindex(2), proto(112), fd(10,11)]

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: IPVS: Scheduler not found

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: IPVS: Service not defined

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: Using LinkWatch kernel netlink reflector...

Dec 12 15:15:02 localhost Keepalived_healthcheckers[26719]: Activating healthchecker for service [172.16.210.181]:8306

Dec 12 15:15:02 localhost kernel: IPVS: Scheduler module ip_vs_ not found

Dec 12 15:18:34 localhost Keepalived_vrrp[26721]: VRRP_Instance(VI_1) Transition to MASTER STATE

Dec 12 15:18:35 localhost Keepalived_vrrp[26721]: VRRP_Instance(VI_1) Entering MASTER STATE

Dec 12 15:18:35 localhost Keepalived_vrrp[26721]: VRRP_Instance(VI_1) setting protocol VIPs.

Dec 12 15:18:35 localhost Keepalived_vrrp[26721]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 172.16.210.183

Dec 12 15:18:35 localhost Keepalived_healthcheckers[26719]: Netlink reflector reports IP 172.16.210.183 added

Dec 12 15:18:40 localhost Keepalived_vrrp[26721]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 172.16.210.183

[root@my2 ~]#

表明已经切换完成。

七、系统参数优化配置

7.1、系统配置

#手工的执行如下的动作,使之立刻生效，以下是物理机中会有，根据实际可能需要修改:

echo never > /sys/kernel/mm/transparent_hugepage/enabled

echo never > /sys/kernel/mm/transparent_hugepage/defrag

echo deadline > /sys/block/sda/queue/scheduler

echo "16" > /sys/block/sda/queue/read_ahead_kb

echo "512" > /sys/block/sda/queue/nr_requests

 

 

#减少预读：/sys/block/sda/queue/read_ahead_kb，默认128，调整为16

#增大队列：/sys/block/sda/queue/nr_requests，默认128，调整为512

 

echo "16" > /sys/block/sda/queue/read_ahead_kb

echo "512" > /sys/block/sda/queue/nr_requests

 

#如果是使用普通SAS盘的话,使用elevator=deadline

#如果是使用SSD/FLASH卡的话,使用elevator=noop

echo noop > /sys/block/sda/queue/scheduler

echo deadline > /sys/block/sda/queue/scheduler

 

#对于关闭透明大页的问题,也执行如下的操作:编辑 /etc/rc.local,添加如下内容

 

cat >> /etc/rc.local <<EOF

#echo noop > /sys/block/sda/queue/scheduler

echo deadline > /sys/block/sda/queue/scheduler

echo never > /sys/kernel/mm/transparent_hugepage/enabled

echo never > /sys/kernel/mm/transparent_hugepage/defrag

echo "16" > /sys/block/sda/queue/read_ahead_kb

echo "512" > /sys/block/sda/queue/nr_requests

 

if test -f /sys/kernel/mm/transparent_hugepage/enabled; then

   echo never > /sys/kernel/mm/transparent_hugepage/enabled

fi

if test -f /sys/kernel/mm/transparent_hugepage/defrag; then

   echo never > /sys/kernel/mm/transparent_hugepage/defrag

fi

EOF

 

# 修改目录权限

chown -R mysql.mysql /data/mysql/

7.2、修改系统内核参数

cat >> /etc/sysctl.conf <<EOF

fs.file-max=655360

fs.aio-max-nr = 1048576

kernel.sem = 5050 646400 5050 128

kernel.shmmax = 137438953472

kernel.shmall = 4294967296

kernel.shmmni = 4096

net.ipv4.ip_local_port_range = 9000 65500

net.ipv4.tcp_mem = 94500000 915000000 927000000

net.core.wmem_default = 8388608

net.core.rmem_default = 8388608

net.core.rmem_max = 16777216

net.core.wmem_max = 16777216

net.ipv4.tcp_rmem = 4096 87380 16777216

net.ipv4.tcp_wmem = 4096 65536 16777216

net.core.netdev_max_backlog = 32768

net.ipv4.tcp_tw_recycle = 1

net.ipv4.tcp_tw_reuse = 1

net.ipv4.tcp_fin_timeout = 10

net.ipv4.tcp_keepalive_time = 300

net.ipv4.tcp_max_syn_backlog = 32768

net.ipv4.tcp_syncookies = 1

net.ipv4.tcp_timestamps = 0

net.ipv4.conf.default.accept_source_route = 0

vm.swappiness=1

EOF

 

sysctl -p

 

echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore       

echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce       

echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore       

echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce

附录：新安装的虚拟机修改信息

1、修改主机名

yum -y install vim telnet unzip zip lrzsz

hostname dev_test

sed -i 's/HOSTNAME=localhost.localdomain/HOSTNAME=dev_test/g' /etc/sysconfig/network

sed -n '/HOSTNAME/p' /etc/sysconfig/network

2、关闭selinux

sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config

setenforce 0

3、关闭防火墙

/etc/init.d/iptables  stop

cat >>/etc/rc.local <<EOF

/etc/init.d/iptables  stop

EOF

4、修改网卡ip信息

cat >/etc/sysconfig/network-scripts/ifcfg-eth0 <<EOF

TYPE=Ethernet

BOOTPROTO=static

NAME=eth0

DEVICE=eth0

ONBOOT=yes

IPADDR=172.16.210.111

NETMASK=255.255.255.0

GATEWAY=172.16.210.250

EOF

5、重启网卡服务

/etc/init.d/network restart

6、修改dns

cat >/etc/resolv.conf <<EOF

nameserver 172.16.110.11

nameserver 8.8.8.8

EOF

7、系统初始化配置

7.1、关闭SELINUX

#修改配置文件,重启服务后永久生效。

sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config

#命令行设置立即生效

setenforce 0

7.2、防火墙设置

cat >>/etc/rc.local <<EOF

/etc/init.d/iptables  stop

EOF

 

cp /etc/sysconfig/iptables /root/iptables.bak

cat >/etc/sysconfig/iptables <<EOF

# Firewall configuration written by system-config-firewall

# Manual customization of this file is not recommended.

*filter

:INPUT DROP [0:0]

:FORWARD ACCEPT [0:0]

:OUTPUT ACCEPT [0:0]

-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

-A INPUT -p icmp -j ACCEPT

-A INPUT -i lo -j ACCEPT

-A INPUT -p tcp -m tcp --dport 80 -j ACCEPT

-A INPUT -p tcp -m tcp --dport 22 -j ACCEPT

-A INPUT -j REJECT --reject-with icmp-host-prohibited

-A FORWARD -j REJECT --reject-with icmp-host-prohibited

COMMIT

EOF

/etc/init.d/iptables  restart

7.3、安装基础依赖包

# yum  -y install  gcc-c++ gd libxml2-devel libjpeg-devel libpng-devel net-snmp-devel wget telnet vim zip unzip

# yum  -y install  curl-devel libxslt-devel pcre-devel libjpeg libpng libxml2 libcurl4-openssl-dev

# yum  -y install  libcurl-devel libcurl freetype-config freetype freetype-devel unixODBC libxslt

yum  clean all

yum -y update

yum -y install gcc-c++ gd libxml2-devel libjpeg-devel libpng-devel net-snmp-devel wget telnet vim zip unzip

yum -y install curl-devel libxslt-devel pcre-devel libjpeg libpng libcurl4-openssl-dev

yum -y install libcurl-devel libcurl freetype-config freetype freetype-devel unixODBC libxslt

yum -y install gcc automake autoconf libtool openssl-devel

yum -y install perl-devel perl-ExtUtils-Embed

yum -y install cmake ncurses-devel.x86_64  openldap-devel.x86_64 lrzsz  openssh-clients gcc-g77  bison

yum -y install libmcrypt libmcrypt-devel mhash mhash-devel bzip2 bzip2-devel

yum -y install ntpdate rsync svn  patch  iptables iptables-services

yum -y install libevent libevent-devel  cyrus-sasl cyrus-sasl-devel

yum -y install gd-devel libmemcached-devel memcached git libssl-devel libyaml-devel auto make

yum -y groupinstall "Server Platform Development" "Development tools"

yum -y groupinstall "Development tools"

 

yum -y install gcc.x86_64 libxml2.x86_64 libxml2-devel.x86_64 openssl.x86_64 openssl-devel.x86_64 libcurl.x86_64 libcurl-devel.x86_64

yum -y install gd.x86_64 gd-devel.x86_64  gcc-c++.x86_64 readline.x86_64 readline-devel.x86_64

7.4、时间同步

cat >/root/ntp.sh <<EOF

#!/bin/bash

# ntp.sh

#NTP服务器数组列表

ntpServer=(

[0]=1.cn.pool.ntp.org

[1]=0.cn.pool.ntp.org

[2]=2.cn.pool.ntp.org
[3]=3.cn.pool.ntp.org

)

 

#校验#

serverNum=`echo \${#ntpServer[*]}`

NUM=0

for ((i=0; i<=\$serverNum; i++)); do

    echo -n "正在和NTP服务器:\${ntpServer[\$NUM]}校验中..."

    /usr/sbin/ntpdate \${ntpServer[\$NUM]} >> /dev/null 2>&1

    if [ \$? -eq 0 ]; then

        echo -e "\e[1;32m\t[成功]\e[0m"

        echo -e "\e[1;32m同步成功,退出......\e[0m"

        break

    else

        echo -e "\e[1;31m\t[失败]\e[0m"

        echo -e "\e[1;31m继续同步下一个!!!!!\e[0m"

        let NUM++

    fi

    sleep 2

done

EOF

chmod +x /root/ntp.sh

sh /root/ntp.sh

 

cat >>/etc/crontab <<EOF

01 * * * *  /root/ntp.sh

#0 0 */5 * * /bin/bash /root/cutlog.sh

EOF