# MySQL 复制搭建(附mysql自动搭建脚本)
1. 用自动化脚本拉起一个mysql数据库，作为主库
`[root@upright92 mysql]# ./install_mysql.py 3306`
2. 连接到主库上，创建复制用户repl
```mysql> alter user user() identified by '';
Query OK, 0 rows affected (0.00 sec)
mysql> create user repl identified by '123456';
Query OK, 0 rows affected (0.00 sec)
mysql> grant replication slave on *.* to repl;
Query OK, 0 rows affected (0.00 sec)
```
3. 在主库上加载数据
```
[root@upright92 data]# mysqlslap --user=root --socket=/tmp/mysql3306.sock --concurrency=10 --number-int-cols=5 --number-char-cols=20 --auto-generate-sql -p --no-drop
```
4. 在主库上备份数据
```
[root@upright92 backup]# mysqldump -uroot -p -S /tmp/mysql3306.sock -A --single-transaction --master-data=2 > full_backup_3306_1351.sql
[root@upright92 backup]# ls -ltr
-rw-r--r-- 1 root root 1201471 Jul 11 13:52 full_backup_3306_1351.sql
```
5. 在从库上拉起mysql数据库，导入主库上的备份文件
```
[root@upright91 mysql]# ./install_mysql.py 3307
[root@upright91 data]# cat error.log |grep pass
2019-07-11T05:56:35.409964Z 1 [Note] A temporary password is generated for root@localhost: NTh1GAby;*_W
[root@upright91 data]# mysql -S /tmp/mysql3307.sock -uroot -p
root@localhost [(none)]>alter user user() identified by '';
root@localhost [(none)]>reset master; --一定要注意， 需要在从库上reset master
root@localhost [(none)]>source full_backup_3306_1351.sql
```
6. 设置复制
```
change master to \
master_host='192.168.0.92', \
master_user='repl' , \
master_password='123456', \
master_port=3306 ,\
master_auto_position=1;
start slave; --启动复制
```
7. 确认复制状态
```
root@localhost [mc]>show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.0.92
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000002
Read_Master_Log_Pos: 2261804
Relay_Log_File: relay-bin.000002
Relay_Log_Pos: 998
Relay_Master_Log_File: mysql-bin.000002
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: 2261804
Relay_Log_Space: 1199
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: 923306
Master_UUID: 6f3cc46a-a38b-11e9-874a-6c92bf2b6cf6
Master_Info_File: /data/mysql/mysql3307/data/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: 6f3cc46a-a38b-11e9-874a-6c92bf2b6cf6:797-799
Executed_Gtid_Set: 6f3cc46a-a38b-11e9-874a-6c92bf2b6cf6:1-799
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
ERROR:
No query specified
```
## 主库config文件
```
#my.cnf
[client]
port = 3306
socket = /tmp/mysql.sock
[mysql]
prompt="\\u@\\h [\\d]>"
no-auto-rehash
[mysqld]
user = mysql
basedir = /usr/local/mysql
datadir = /data/mysql/mysql3306/data
port = 3306
socket = /tmp/mysql3306.sock
event_scheduler = 0
tmpdir = /data/mysql/mysql3306/tmp
#timeout
interactive_timeout = 300
wait_timeout = 300
#character set
character-set-server = utf8
open_files_limit = 65535
max_connections = 100
max_connect_errors = 100000
#lower_case_table_names =1
#logs
log-output=file
slow_query_log = 1
slow_query_log_file = slow.log
log-error = error.log
log_warnings = 2
pid-file = mysql.pid
long_query_time = 1
log-slow-slave-statements = 1
binlog_format = row
server-id = 923306
log-bin = /data/mysql/mysql3306/logs/mysql-bin
binlog_cache_size = 4M
max_binlog_size = 256M
max_binlog_cache_size = 1M
sync_binlog = 0
expire_logs_days = 10
#procedure
log_bin_trust_function_creators=1
#
gtid-mode = on
enforce_gtid_consistency=on
#relay log
skip_slave_start = 1
max_relay_log_size = 128M
relay_log_purge = 1
relay_log_recovery = 1
relay-log=relay-bin
relay-log-index=relay-bin.index
log_slave_updates
#slave-skip-errors=1032,1053,1062
#skip-grant-tables
#buffers & cache
table_open_cache = 2048
table_definition_cache = 2048
table_open_cache = 2048
max_heap_table_size = 96M
sort_buffer_size = 128K
join_buffer_size = 128K
thread_cache_size = 200
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 = 100M
innodb_buffer_pool_instances = 1
innodb_data_file_path = ibdata1:100M:autoextend
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 8M
innodb_log_file_size = 100M
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
```
## 从库配置文件
```
#my.cnf
[client]
port = 3307
socket = /tmp/mysql.sock
[mysql]
prompt="\\u@\\h [\\d]>"
no-auto-rehash
[mysqld]
user = mysql
basedir = /usr/local/mysql
datadir = /data/mysql/mysql3307/data
port = 3307
socket = /tmp/mysql3307.sock
event_scheduler = 0
tmpdir = /data/mysql/mysql3307/tmp
#timeout
interactive_timeout = 300
wait_timeout = 300
#character set
character-set-server = utf8
open_files_limit = 65535
max_connections = 100
max_connect_errors = 100000
#lower_case_table_names =1
#logs
log-output=file
slow_query_log = 1
slow_query_log_file = slow.log
log-error = error.log
log_warnings = 2
pid-file = mysql.pid
long_query_time = 1
log-slow-slave-statements = 1
binlog_format = row
server-id = 123307
log-bin = /data/mysql/mysql3307/logs/mysql-bin
binlog_cache_size = 4M
max_binlog_size = 256M
max_binlog_cache_size = 1M
sync_binlog = 0
expire_logs_days = 10
#procedure
log_bin_trust_function_creators=1
#
gtid-mode = on
enforce_gtid_consistency=on
#relay log
skip_slave_start = 1
max_relay_log_size = 128M
relay_log_purge = 1
relay_log_recovery = 1
relay-log=relay-bin
relay-log-index=relay-bin.index
log_slave_updates
#slave-skip-errors=1032,1053,1062
#skip-grant-tables
#buffers & cache
table_open_cache = 2048
table_definition_cache = 2048
table_open_cache = 2048
max_heap_table_size = 96M
sort_buffer_size = 128K
join_buffer_size = 128K
thread_cache_size = 200
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 = 100M
innodb_buffer_pool_instances = 1
innodb_data_file_path = ibdata1:100M:autoextend
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 8M
innodb_log_file_size = 100M
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
```
## 自动化安装脚本 install_mysql.py
安装路径: /data/mysql/mysql${port}/{tmp,logs,data}
mysql安装包路径: /user/local/mysql
脚本调用方法: ./install_mysql.py ${port}
```
[root@upright92 mysql]# cat install_mysql.py
#!/usr/bin/python
import os
import os.path
import sys
import socket
PORT=sys.argv[1]
IP=socket.gethostbyname(socket.gethostname())
IP=IP[IP.rfind('.')+1:]
SERVER_ID=IP+PORT
##auto start mysql
### mysql configure file
my_conf="""
#my.cnf
[client]
port = 3306
socket = /tmp/mysql.sock
[mysql]
prompt="\\\\u@\\\\h [\\\\d]>"
no-auto-rehash
[mysqld]
user = mysql
basedir = /usr/local/mysql
datadir = /data/mysql/mysql3306/data
port = 3306
socket = /tmp/mysql3306.sock
event_scheduler = 0
tmpdir = /data/mysql/mysql3306/tmp
#timeout
interactive_timeout = 300
wait_timeout = 300
#character set
character-set-server = utf8
open_files_limit = 65535
max_connections = 100
max_connect_errors = 100000
#lower_case_table_names =1
#logs
log-output=file
slow_query_log = 1
slow_query_log_file = slow.log
log-error = error.log
log_warnings = 2
pid-file = mysql.pid
long_query_time = 1
log-slow-slave-statements = 1
binlog_format = row
server-id = 123306
log-bin = /data/mysql/mysql3306/logs/mysql-bin
binlog_cache_size = 4M
max_binlog_size = 256M
max_binlog_cache_size = 1M
sync_binlog = 0
expire_logs_days = 10
#procedure
log_bin_trust_function_creators=1
#
gtid-mode = on
enforce_gtid_consistency=on
#relay log
skip_slave_start = 1
max_relay_log_size = 128M
relay_log_purge = 1
relay_log_recovery = 1
relay-log=relay-bin
relay-log-index=relay-bin.index
log_slave_updates
#slave-skip-errors=1032,1053,1062
#skip-grant-tables
#buffers & cache
table_open_cache = 2048
table_definition_cache = 2048
table_open_cache = 2048
max_heap_table_size = 96M
sort_buffer_size = 128K
join_buffer_size = 128K
thread_cache_size = 200
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 = 100M
innodb_buffer_pool_instances = 1
innodb_data_file_path = ibdata1:100M:autoextend
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 8M
innodb_log_file_size = 100M
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
"""
BASE_DIR="/data/mysql/mysql"+str(PORT)
DATA_DIR="/data/mysql/mysql"+str(PORT)+"/data"
LOG_DIR="/data/mysql/mysql"+str(PORT)+"/logs"
TMP_DIR="/data/mysql/mysql"+str(PORT)+"/tmp"
parameter="/data/mysql/mysql"+str(PORT)+"/my"+str(PORT)+".cnf"
my_conf=my_conf.replace('3306',PORT)
my_conf=my_conf.replace('123306',SERVER_ID)
#if data dir exsits
if os.path.isdir(BASE_DIR):
print(str(PORT) + " exits, please change")
else:
os.mkdir(BASE_DIR)
os.mkdir(DATA_DIR)
os.mkdir(LOG_DIR)
os.mkdir(TMP_DIR)
os.system("chown -R mysql.mysql "+BASE_DIR)
with open(parameter,'w') as f:
f.writelines(my_conf)
os.system("mysqld --defaults-file="+parameter+" --initialize")
os.system("mysqld --defaults-file="+parameter+" &")
```