[bigdata-66] ubuntu 14.04 + keepalived+mysql5.5 mysql双机主主同步热备ip漂移故障自动切换实践
2017-04-29 16:41
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1. 两个节点
192.168.17.112 smysql1
192.168.17.109 smysql2
2. 两个节点均安装mysql
apt-get install mysql-client-5.5 mysql-server-5.5
root密码是tt88
3. 配置主主同步
3.1 在两个节点mysql上都执行
create user 'mmsync'@'%' identified by 'weirj33';
grant replication slave, replication client on *.* to 'mmsync'@'%' identified by 'weirj33';
3.2 对smysql1进行配置，修改/etc/my.cnf，增加如下命令
[mysqld]
log-bin=mysql-bin
server-id=11
expire-logs-days=100
binlog-ignore-db=mysql
binlog-ignore-db=infomation_schema
binlog-ignore-db=performance_schema #5.5以上需要这一行
auto-increment-increment=2
auto-increment-offset=1
character-set-server=utf8
collation-server=utf8_general_ci
[client]
default-character-set=utf8
3.3 对smysql2创建复制帐号
create user 'mmsync'@'%' identified by 'weirj33';
grant replication slave, replication client on *.* to 'mmsync'@'%' identified by 'weirj33';
3.4 对smysql2的/etc/my.cnf进行配置
[mysqld]
log-bin=mysql-bin
server-id=12
expire-logs-days=100
binlog-ignore-db=mysql
binlog-ignore-db=infomation_schema
auto-increment-increment=2
auto-increment-offset=2
character-set-server=utf8
collation-server=utf8_general_ci
[client]
default-character-set=utf8
3.5 互告bin-log信息
重启mysql服务
3.5.1 在smysql1上执行show master status，查看bin-log文件
File: mysql-bin.000001
Position: 107
Binlog_Do_DB:
Binlog_Ignore_DB: mysql,infomation_schema
1 row in set (0.00 sec)
3.5.2 在smysql2上执行show master status查看bin-log文件
File: mysql-bin.000002
Position: 107
Binlog_Do_DB:
Binlog_Ignore_DB: mysql,infomation_schema
3.5.3 在smysql1上执行
change master to master_host='192.168.17.109',master_user='mmsync',master_password='weirj33',master_log_file='mysql-bin.000002',master_log_pos=107;
3.5.4 在smysql2上执行
change master to master_host='192.168.17.112',master_user='mmsync',master_password='weirj33',master_log_file='mysql-bin.000001',master_log_pos=107;
3.5.5 在两个mysql上均执行
start slave;
3.5.6 在两个mysql上执行
show slave status \G
如果都出现
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
则表明正常。
4. 测试各种方式，看看双机同步如何
4.1 测试1
在smysql1创建库tt1: create database tt1;
在smysql2执行show databases，能看到tt1，符合预期。
在smysql2删除tt1:drop database tt1
在smysql1执行show databases，发现tt1不见了，符合预期。
4.2 测试2
关闭smysql1
在smysql2上执行创建database tt2
重启smysql1，执行show database，发现出现了tt2，符合预期。
关闭smysql2。
在smysql1上执行创建tt3。
然后开启smysql2，可以看到tt3存在，符合预期。
4.3 测试通过，一旦设定，就可以始终自动同步。
5.在两个节点安装lvs管理工具
apt-get install ipvsadm
执行一下
lpvsadm -ln
6. 两个节点安装和配置keepalived
6.1 安装命令
apt-get install keepalived
6.2 在smysql1下配置/etc/keepalived/keepalived.conf，内容如下
----------------
global_defs {
router_id NodeA
}
vrrp_sync_group test {
group {
VI_1
}
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 150
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.17.113 dev eth0 label eth0:1
}
}
virtual_server 192.168.17.113 3306 {
delay_loop 6
lb_algo rr
lb_kind DR
persistence_timeout 20
protocol TCP
sorry_server 192.168.17.109 3306
real_server 192.168.17.112 3306 {
weight 3
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 3306
}
}
}
----------------
6.3 在smysql2下配置/etc/keepalived/keepalived.conf，内容如下
----------------
global_defs {
router_id NodeA
}
vrrp_sync_group test {
group {
VI_1
}
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.17.113 dev eth0 label eth0:1
}
}
virtual_server 192.168.17.113 3306 {
delay_loop 6
lb_algo rr
lb_kind DR
persistence_timeout 20
protocol TCP
sorry_server 192.168.17.109 3306
real_server 192.168.17.112 3306 {
weight 3
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 3306
}
}
}
----------------
6.4 配置smysql1和smysql2的realserver
vim /etc/init.d/realserver.sh
内容如下：
----------------------
#!/bin/bash
# description: Config realserver lo and apply noarp
SNS_VIP=10.1.55.15
/etc/rc.d/init.d/functions
case "$1" in
start)
ifconfig lo:0 $SNS_VIP netmask 255.255.255.255 broadcast $SNS_VIP
/sbin/route add -host $SNS_VIP dev lo:0
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
sysctl -p >/dev/null 2>&1
echo "RealServer Start OK"
;;
stop)
ifconfig lo:0 down
route del $SNS_VIP >/dev/null 2>&1
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "0" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/all/arp_announce
echo "RealServer Stoped"
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
esac
exit 0
----------------------
然后，在两个节点的/etc/rc.local都添加如下一句：
/etc/init.d/realserver.sh start
6.5 重启两个节点
6.5.1 重启后，smysql1上执行ifconfig是这样的：
------------------
eth0 Link encap:Ethernet HWaddr 00:0c:29:0d:21:12
inet addr:192.168.17.112 Bcast:192.168.17.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe0d:2112/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:99 errors:0 dropped:0 overruns:0 frame:0
TX packets:108 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:12450 (12.4 KB) TX bytes:11823 (11.8 KB)
eth0:1 Link encap:Ethernet HWaddr 00:0c:29:0d:21:12
inet addr:192.168.17.113 Bcast:0.0.0.0 Mask:255.255.255.255
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:10 errors:0 dropped:0 overruns:0 frame:0
TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:548 (548.0 B) TX bytes:548 (548.0 B)
lo:0 Link encap:Local Loopback
inet addr:192.168.17.113 Mask:255.255.255.255
UP LOOPBACK RUNNING MTU:65536 Metric:1
------------------
6.5.2 在smysql2上执行ifconfig，结果是这样
------------------
eth0 Link encap:Ethernet HWaddr 00:0c:29:8c:ef:e6
inet addr:192.168.17.109 Bcast:192.168.17.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe8c:efe6/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:171 errors:0 dropped:0 overruns:0 frame:0
TX packets:131 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:18223 (18.2 KB) TX bytes:13282 (13.2 KB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:16 errors:0 dropped:0 overruns:0 frame:0
TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1184 (1.1 KB) TX bytes:1184 (1.1 KB)
lo:0 Link encap:Local Loopback
inet addr:192.168.17.113 Mask:255.255.255.255
UP LOOPBACK RUNNING MTU:65536 Metric:1
------------------
7. 测试双机热备
7.1 两节点重启后。
7.2 在smyslq1上创建测试帐号和测试数据库
create database briandb;
create user 'mytest'@'%' identified by '146';
grant all privileges on briandb.* to 'mytest'@'%' identified by '146';
create user 'mytest'@'localhost' identified by '146';
grant all privileges on briandb.* to 'mytest'@'localhost' identified by '146';
7.3 在第三个节点上执行
mysql -h 192.168.17.113 -u mytest -p
use briandb
use briandb;
create table t1(
id INT NOT NULL AUTO_INCREMENT,
title VARCHAR(100) NOT NULL,
PRIMARY KEY (id)
);
insert into t1 (title) values('tom');
此时，分别去检查smysql1和mysql2，数据都出来了。执行同步了。
7.4 停掉smysql1上的mysql服务。此时，在第三方节点上登录mysql -h 192.168.17.113 -u mytest -p
依然能登录。插入新数据：
insert into t1 (title) values('tom');
然后去smysql2上检查，数据被更新了。
然后，重新启动smysql1，登录它，检查也被更新了。效果符合预期。
7.5 在smysql1上执行/etc/init.d/keepalived stop，停止smysql1上的keepalived服务。
此时，在第三方节点上登录mysql -h 192.168.17.113 -u mytest -p
依然能登录。插入新数据：
insert into t1 (title) values('kit');
然后去smysql2上检查，数据被更新了。
然后，登录smysql1，检查也被更新了。效果符合预期。
在smysql1上重启keepalived，发现113又漂移回112，负责预期。
至此，一切符合预期。
双机主主同步热备自动故障切换ip漂移成功。
8. 在云上部署的重要事项：
阿里云，aws，都不支持keepalived，无论是经典网络还是专有网络，都不行，所以不要试图在它们上部署。
ucloud是可以的。
192.168.17.112 smysql1
192.168.17.109 smysql2
2. 两个节点均安装mysql
apt-get install mysql-client-5.5 mysql-server-5.5
root密码是tt88
3. 配置主主同步
3.1 在两个节点mysql上都执行
create user 'mmsync'@'%' identified by 'weirj33';
grant replication slave, replication client on *.* to 'mmsync'@'%' identified by 'weirj33';
3.2 对smysql1进行配置，修改/etc/my.cnf，增加如下命令
[mysqld]
log-bin=mysql-bin
server-id=11
expire-logs-days=100
binlog-ignore-db=mysql
binlog-ignore-db=infomation_schema
binlog-ignore-db=performance_schema #5.5以上需要这一行
auto-increment-increment=2
auto-increment-offset=1
character-set-server=utf8
collation-server=utf8_general_ci
[client]
default-character-set=utf8
3.3 对smysql2创建复制帐号
create user 'mmsync'@'%' identified by 'weirj33';
grant replication slave, replication client on *.* to 'mmsync'@'%' identified by 'weirj33';
3.4 对smysql2的/etc/my.cnf进行配置
[mysqld]
log-bin=mysql-bin
server-id=12
expire-logs-days=100
binlog-ignore-db=mysql
binlog-ignore-db=infomation_schema
auto-increment-increment=2
auto-increment-offset=2
character-set-server=utf8
collation-server=utf8_general_ci
[client]
default-character-set=utf8
3.5 互告bin-log信息
重启mysql服务
3.5.1 在smysql1上执行show master status，查看bin-log文件
File: mysql-bin.000001
Position: 107
Binlog_Do_DB:
Binlog_Ignore_DB: mysql,infomation_schema
1 row in set (0.00 sec)
3.5.2 在smysql2上执行show master status查看bin-log文件
File: mysql-bin.000002
Position: 107
Binlog_Do_DB:
Binlog_Ignore_DB: mysql,infomation_schema
3.5.3 在smysql1上执行
change master to master_host='192.168.17.109',master_user='mmsync',master_password='weirj33',master_log_file='mysql-bin.000002',master_log_pos=107;
3.5.4 在smysql2上执行
change master to master_host='192.168.17.112',master_user='mmsync',master_password='weirj33',master_log_file='mysql-bin.000001',master_log_pos=107;
3.5.5 在两个mysql上均执行
start slave;
3.5.6 在两个mysql上执行
show slave status \G
如果都出现
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
则表明正常。
4. 测试各种方式，看看双机同步如何
4.1 测试1
在smysql1创建库tt1: create database tt1;
在smysql2执行show databases，能看到tt1，符合预期。
在smysql2删除tt1:drop database tt1
在smysql1执行show databases，发现tt1不见了，符合预期。
4.2 测试2
关闭smysql1
在smysql2上执行创建database tt2
重启smysql1，执行show database，发现出现了tt2，符合预期。
关闭smysql2。
在smysql1上执行创建tt3。
然后开启smysql2，可以看到tt3存在，符合预期。
4.3 测试通过，一旦设定，就可以始终自动同步。
5.在两个节点安装lvs管理工具
apt-get install ipvsadm
执行一下
lpvsadm -ln
6. 两个节点安装和配置keepalived
6.1 安装命令
apt-get install keepalived
6.2 在smysql1下配置/etc/keepalived/keepalived.conf，内容如下
----------------
global_defs {
router_id NodeA
}
vrrp_sync_group test {
group {
VI_1
}
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 150
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.17.113 dev eth0 label eth0:1
}
}
virtual_server 192.168.17.113 3306 {
delay_loop 6
lb_algo rr
lb_kind DR
persistence_timeout 20
protocol TCP
sorry_server 192.168.17.109 3306
real_server 192.168.17.112 3306 {
weight 3
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 3306
}
}
}
----------------
6.3 在smysql2下配置/etc/keepalived/keepalived.conf，内容如下
----------------
global_defs {
router_id NodeA
}
vrrp_sync_group test {
group {
VI_1
}
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.17.113 dev eth0 label eth0:1
}
}
virtual_server 192.168.17.113 3306 {
delay_loop 6
lb_algo rr
lb_kind DR
persistence_timeout 20
protocol TCP
sorry_server 192.168.17.109 3306
real_server 192.168.17.112 3306 {
weight 3
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 3306
}
}
}
----------------
6.4 配置smysql1和smysql2的realserver
vim /etc/init.d/realserver.sh
内容如下：
----------------------
#!/bin/bash
# description: Config realserver lo and apply noarp
SNS_VIP=10.1.55.15
/etc/rc.d/init.d/functions
case "$1" in
start)
ifconfig lo:0 $SNS_VIP netmask 255.255.255.255 broadcast $SNS_VIP
/sbin/route add -host $SNS_VIP dev lo:0
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
sysctl -p >/dev/null 2>&1
echo "RealServer Start OK"
;;
stop)
ifconfig lo:0 down
route del $SNS_VIP >/dev/null 2>&1
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "0" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/all/arp_announce
echo "RealServer Stoped"
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
esac
exit 0
----------------------
然后，在两个节点的/etc/rc.local都添加如下一句：
/etc/init.d/realserver.sh start
6.5 重启两个节点
6.5.1 重启后，smysql1上执行ifconfig是这样的：
------------------
eth0 Link encap:Ethernet HWaddr 00:0c:29:0d:21:12
inet addr:192.168.17.112 Bcast:192.168.17.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe0d:2112/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:99 errors:0 dropped:0 overruns:0 frame:0
TX packets:108 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:12450 (12.4 KB) TX bytes:11823 (11.8 KB)
eth0:1 Link encap:Ethernet HWaddr 00:0c:29:0d:21:12
inet addr:192.168.17.113 Bcast:0.0.0.0 Mask:255.255.255.255
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:10 errors:0 dropped:0 overruns:0 frame:0
TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:548 (548.0 B) TX bytes:548 (548.0 B)
lo:0 Link encap:Local Loopback
inet addr:192.168.17.113 Mask:255.255.255.255
UP LOOPBACK RUNNING MTU:65536 Metric:1
------------------
6.5.2 在smysql2上执行ifconfig，结果是这样
------------------
eth0 Link encap:Ethernet HWaddr 00:0c:29:8c:ef:e6
inet addr:192.168.17.109 Bcast:192.168.17.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe8c:efe6/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:171 errors:0 dropped:0 overruns:0 frame:0
TX packets:131 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:18223 (18.2 KB) TX bytes:13282 (13.2 KB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:16 errors:0 dropped:0 overruns:0 frame:0
TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1184 (1.1 KB) TX bytes:1184 (1.1 KB)
lo:0 Link encap:Local Loopback
inet addr:192.168.17.113 Mask:255.255.255.255
UP LOOPBACK RUNNING MTU:65536 Metric:1
------------------
7. 测试双机热备
7.1 两节点重启后。
7.2 在smyslq1上创建测试帐号和测试数据库
create database briandb;
create user 'mytest'@'%' identified by '146';
grant all privileges on briandb.* to 'mytest'@'%' identified by '146';
create user 'mytest'@'localhost' identified by '146';
grant all privileges on briandb.* to 'mytest'@'localhost' identified by '146';
7.3 在第三个节点上执行
mysql -h 192.168.17.113 -u mytest -p
use briandb
use briandb;
create table t1(
id INT NOT NULL AUTO_INCREMENT,
title VARCHAR(100) NOT NULL,
PRIMARY KEY (id)
);
insert into t1 (title) values('tom');
此时，分别去检查smysql1和mysql2，数据都出来了。执行同步了。
7.4 停掉smysql1上的mysql服务。此时，在第三方节点上登录mysql -h 192.168.17.113 -u mytest -p
依然能登录。插入新数据：
insert into t1 (title) values('tom');
然后去smysql2上检查，数据被更新了。
然后，重新启动smysql1，登录它，检查也被更新了。效果符合预期。
7.5 在smysql1上执行/etc/init.d/keepalived stop，停止smysql1上的keepalived服务。
此时，在第三方节点上登录mysql -h 192.168.17.113 -u mytest -p
依然能登录。插入新数据：
insert into t1 (title) values('kit');
然后去smysql2上检查，数据被更新了。
然后，登录smysql1，检查也被更新了。效果符合预期。
在smysql1上重启keepalived，发现113又漂移回112，负责预期。
至此，一切符合预期。
双机主主同步热备自动故障切换ip漂移成功。
8. 在云上部署的重要事项：
阿里云，aws，都不支持keepalived，无论是经典网络还是专有网络，都不行，所以不要试图在它们上部署。
ucloud是可以的。
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