1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
connect slave1,127.0.0.1,root,,,$SERVER_MYPORT_3;
connect slave2,127.0.0.1,root,,,$SERVER_MYPORT_4;
connect master1,127.0.0.1,root,,,$SERVER_MYPORT_1;
connect master2,127.0.0.1,root,,,$SERVER_MYPORT_2;
connection slave1;
CHANGE MASTER 'slave1' TO master_port=MYPORT_1, master_host='127.0.0.1', master_user='root';
CHANGE MASTER 'slave2' TO master_port=MYPORT_2, master_host='127.0.0.1', master_user='root';
set default_master_connection = 'slave1';
START SLAVE;
include/wait_for_slave_to_start.inc
set default_master_connection = 'slave2';
START SLAVE;
include/wait_for_slave_to_start.inc
set default_master_connection = '';
connection slave2;
CHANGE MASTER TO master_port=MYPORT_3, master_host='127.0.0.1', master_user='root';
start all slaves;
Warnings:
Note 1937 SLAVE '' started
include/wait_for_slave_to_start.inc
connection master1;
SET GLOBAL gtid_domain_id= 1;
SET SESSION gtid_domain_id= 1;
CREATE TABLE t3 (a INT PRIMARY KEY, b VARCHAR(10)) ENGINE=InnoDB;
CREATE TABLE t1 (a INT PRIMARY KEY, b VARCHAR(10));
INSERT INTO t1 VALUES (1, "initial");
INSERT INTO t3 VALUES (101, "initial 1");
connection slave1;
connection master2;
SET GLOBAL gtid_domain_id= 2;
SET SESSION gtid_domain_id= 2;
CREATE TABLE t2 (a INT PRIMARY KEY, b VARCHAR(10)) ENGINE=InnoDB;
INSERT INTO t2 VALUES (1, "initial");
SET SQL_LOG_BIN=0;
CREATE TABLE t3 (a INT PRIMARY KEY, b VARCHAR(10));
SET SQL_LOG_BIN=1;
INSERT INTO t3 VALUES (201, "initial 2");
connection slave2;
*** Now move slave2 to replicate from both master1 and master2 instead of just slave1 ***
STOP ALL SLAVES;
Warnings:
Note 1938 SLAVE '' stopped
connection master1;
INSERT INTO t1 VALUES (2, "switch1");
INSERT INTO t3 VALUES (102, "switch1 a");
connection master2;
INSERT INTO t2 VALUES (2, "switch1");
INSERT INTO t3 VALUES (202, "switch1 b");
connection slave2;
CHANGE MASTER 'slave1' TO master_port=MYPORT_1, master_host='127.0.0.1', master_user='root';
CHANGE MASTER 'slave2' TO master_port=MYPORT_2, master_host='127.0.0.1', master_user='root';
SET default_master_connection = 'slave1';
START SLAVE;
include/wait_for_slave_to_start.inc
SET default_master_connection = 'slave2';
START SLAVE;
include/wait_for_slave_to_start.inc
set default_master_connection = '';
*** Move slave1 to replicate from slave2 instead of from master1 and master2 ***
connection slave1;
STOP SLAVE 'slave1';
connection master1;
INSERT INTO t1 VALUES (3, "switch 2");
INSERT INTO t3 VALUES (103, "switch 2 a");
connection slave2;
connection master2;
INSERT INTO t2 VALUES (3, "switch 2");
INSERT INTO t3 VALUES (203, "switch 2 b");
include/save_master_gtid.inc
connection slave1;
STOP SLAVE 'slave2';
connection master2;
INSERT INTO t2 VALUES (4, "switch 3");
INSERT INTO t3 VALUES (204, "switch 3 b");
connection slave2;
include/sync_with_master_gtid.inc
connection slave1;
CHANGE MASTER TO master_port=MYPORT_4, master_host='127.0.0.1', master_user='root';
START SLAVE;
SELECT * FROM t1 ORDER BY a;
a b
1 initial
2 switch1
3 switch 2
SELECT * FROM t2 ORDER BY a;
a b
1 initial
2 switch1
3 switch 2
4 switch 3
SELECT * FROM t3 ORDER BY a;
a b
101 initial 1
102 switch1 a
103 switch 2 a
201 initial 2
202 switch1 b
203 switch 2 b
204 switch 3 b
connection master1;
DROP TABLE t1;
SET SQL_LOG_BIN=0;
DROP TABLE t3;
SET SQL_LOG_BIN=1;
connection master2;
DROP TABLE t2;
DROP TABLE t3;
connection slave1;
SET GLOBAL gtid_domain_id=0;
STOP ALL SLAVES;
Warnings:
Note 1938 SLAVE '' stopped
include/reset_master_slave.inc
disconnect slave1;
connection slave2;
SET GLOBAL gtid_domain_id=0;
STOP ALL SLAVES;
Warnings:
Note 1938 SLAVE 'slave1' stopped
Note 1938 SLAVE 'slave2' stopped
include/reset_master_slave.inc
disconnect slave2;
connection master1;
SET GLOBAL gtid_domain_id=0;
include/reset_master_slave.inc
disconnect master1;
connection master2;
SET GLOBAL gtid_domain_id=0;
include/reset_master_slave.inc
disconnect master2;
|
