问题:
1.为什么数据目录和日志目录需要分开?
2.如何标准化配置多实例?(例如:一台物理主机上部署3306与3307两个实例)
3.详细描述MySQL编译安装的过程(截图安装步骤)
1.为什么数据目录和日志目录需要分开?
不同作用的文件放到不同的磁盘、目录之上
-
数据文件
- 随机读写,可以放在高速盘上,如ssd、raid10
- 追求响应时间
-
日志文件
- 顺序写,可以放在raid5上
- 如果用rsync同步到远端时,可以同步整个日记目录
- 如果跟数据文件放在一起,数据文件会被一起同步过去
- 追求吞吐量
2.如何标准化配置多实例?(例如:一台物理主机上部署3306与3307两个实例)
使用多个不同配置文件
优点:配置简单
缺点:不方便管理
通过官方mysqld_mutil使用单独的配置文件
优点:方便集中管理
缺点:多个实例配置均在一个文件,不太方便
问题:
- 多个路径是否需要编译安装多个mysql软件?还是共用一个mysql软件,然后根据不同目录存放不同数据库实例的data/log?
- 实际生产中是使用一个my.cnf文件配合mysqld_mutil工具管理实例?还是每个实例一个my.cnf文件?
编译安装单实例
- 安装必要工具
下面的安装源用5.6的
wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm yum install -y mysql57-community-release-el7-11.noarch.rpm https://dev.mysql.com/doc/refman/5.5/en/source-installation.html yum install -y cmake gcc gcc-c++ ncurses-devel bison zlib libxml openssl openssl-devel ncurses
- 关闭防火墙
不关闭也是可以的,打开对应的服务端口
- EL6
service iptables stauts
service iptables stop
chkconfig iptables off
- EL7
7以后默认是firewall防火墙
firewall-cmd --state systemctl list-unit-files|grep firewalld.service systemctl status firewalld.service systemctl stop firewalld.service systemctl disable firewalld.service 或者 firewall-cmd --set-default-zone=trusted
- 关闭SELINUX
getenforce setenforce 0 vi /etc/selinux/config permissive
- 配置sysctl.conf
- 检查操作系统上是否安装了MySQL
rpm -qa|grep -i mysql
- 添加用户和组
groupadd mysql useradd mysql -g mysql -s /bin/false
- 配MySQL环境变量
- 创建目录及授权
mkdir -p /data/my3306/{data,log/binlog,log/iblog,run,tmp} chown -R mysql:mysql /data vi ~/.bash_profile PATH=$PATH:$HOME/bin:/data/my3306/bin export PATH
- 解压mysql5.6
wget https://dev.mysql.com/get/Downloads/MySQL-5.6/MySQL-5.6.39-1.el7.src.rpm rpm2cpio MySQL-5.6.39-1.el7.src.rpm | cpio -div tar -zxvf mysql-5.6.39.tar.gz
- 编译并安装
cmake -DCMAKE_INSTALL_PREFIX=/data/my3306 -DINSTALL_DATADIR=/data/my3306/data -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DEXTRA_CHARSETS=all -DWITH_SSL=yes -DWITH_EMBEDDED_SERVER=1 -DENABLED_LOCAL_INFILE=1 -DWITH_MYISAM_STORAGE_ENGINE=1 -DWITH_INNOBASE_STORAGE_ENGINE=1 -DWITH_ARCHIVE_STORAGE_ENGINE=1 -DWITH_BLACKHOLE_STORAGE_ENGINE=1 -DWITH_FEDERATED_STORAGE_ENGINE=1 -DWITH_PARTITION_STORAGE_ENGINE=1 -DMYSQL_UNIX_ADDR=/data/my3306/run/mysql.sock -DMYSQL_TCP_PORT=3306 -DENABLED_LOCAL_INFILE=1 -DSYSCONFDIR=/etc -DWITH_READLINE=on
结果
CMake Warning: Manually-specified variables were not used by the project: INSTALL_DATADIR WITH_READLINE -- Build files have been written to: /dvd/mysql-5.6.39
如果cmake失败,删除目录下的CMakeCache.txt文件
然后是make
[100%] Building CXX object mysql-test/lib/My/SafeProcess/CMakeFiles/my_safe_process.dir/safe_process.cc.o Linking CXX executable my_safe_process [100%] Built target my_safe_process
最后是make install
-- Up-to-date: /data/my3306/sql-bench/test-transactions -- Up-to-date: /data/my3306/sql-bench/test-wisconsin -- Installing: /data/my3306/sql-bench/cmake_install.cmake -- Installing: /data/my3306/sql-bench/CTestTestfile.cmake
参数含义
-DCMAKE_INSTALL_PREFIX= 指向mysql安装目录
-DINSTALL_SBINDIR=sbin 指向可执行文件目录(prefix/sbin)
-DMYSQL_DATADIR=/var/lib/mysql 指向mysql数据文件目录(/var/lib/mysql)
-DSYSCONFDIR=/etc/mysql 指向mysql配置文件目录(/etc/mysql)
-DINSTALL_PLUGINDIR=lib/mysql/plugin 指向插件目录(prefix/lib/mysql/plugin)
-DINSTALL_MANDIR=share/man 指向man文档目录(prefix/share/man)
-DINSTALL_SHAREDIR=share 指向aclocal/mysql.m4安装目录(prefix/share)
-DINSTALL_LIBDIR=lib/mysql 指向对象代码库目录(prefix/lib/mysql)
-DINSTALL_INCLUDEDIR=include/mysql 指向头文件目录(prefix/include/mysql)
-DINSTALL_INFODIR=share/info 指向info文档存放目录(prefix/share/info)
prefix官方推荐设为/usr
Storage Engine相关
类型csv,myisam,myisammrg,heap,innobase,archive,blackhole
若想启用某个引擎的支持:-DWITH_<ENGINE>_STORAGE_ENGINE=1
如:
-DWITH_INNOBASE_STORAGE_ENGINE=1
-DWITH_ARCHIVE_STORAGE_ENGINE=1
-DWITH_BLACKHOLE_STORAGE_ENGINE=1
若想禁用某个引擎的支持:-DWITHOUT_<ENGINE>_STORAGE_ENGINE=1
如:
-DWITHOUT_EXAMPLE_STORAGE_ENGINE=1
-DWITHOUT_FEDERATED_STORAGE_ENGINE=1
-DWITHOUT_PARTITION_STORAGE_ENGINE=1
Library相关
-DWITH_READLINE=1 启用readline库支持(提供可编辑的命令行)
-DWITH_SSL=system 启用ssl库支持(安全套接层)
-DWITH_ZLIB=system 启用libz库支持(zib、gzib相关)
-DWTIH_LIBWRAP=0 禁用libwrap库(实现了通用TCP包装的功能,为网络服务守护进程使用)
-DMYSQL_TCP_PORT=3306 指定TCP端口为3306
-DMYSQL_UNIX_ADDR=/tmp/mysqld.sock 指定mysql.sock路径
-DENABLED_LOCAL_INFILE=1 启用本地数据导入支持
-DEXTRA_CHARSETS=all 启用额外的字符集类型(默认为all)
-DDEFAULT_CHARSET=utf8 指定默认的字符集为utf8
-DDEFAULT_COLLATION=utf8_general_ci 设定默认排序规则(utf8_general_ci快速/utf8_unicode_ci准确)
-DWITH_EMBEDDED_SERVER=1 编译嵌入式服务器支持
-DMYSQL_USER=mysql 指定mysql用户(默认为mysql)
-DWITH_DEBUG=0 禁用debug(默认为禁用)
-DENABLE_PROFILING=0 禁用Profiling分析(默认为开启)
-DWITH_COMMENT='string' 一个关于编译环境的描述性注释
- MySQL参数配置
- 初始化MySQL脚本
chown -R mysql:mysql /data cd /data/my3306 ./scripts/mysql_install_db --defaults-file=/data/my3306/my.cnf --datadir=/data/my3306/data --user=mysql
FATAL ERROR: please install the following Perl modules before executing ./mysql_install_db: Data::Dumper
报错了,需要安装Perl
yum install -y perl perl-devel perl-Data-Dumper
需要在bin目录下执行,不然会报错:FATAL ERROR: Could not find ./bin/my_print_defaults
- 启动MySQL
cd /data/my3306/bin ./mysqld_safe --defaults-file=/data/my3306/my.cnf --user=mysql &
[root@mysql01 bin]# 180206 23:25:09 mysqld_safe error: log-error set to '/var/log/mariadb/mariadb.log', however file don't exists. Create writable for user 'mysql'.
- 登录MySQL
[root@mysql01 bin]# netstat -ano|grep 3306 tcp6 0 0 :::3306 :::* LISTEN off (0.00/0/0) unix 2 [ ACC ] STREAM LISTENING 57177 /data/my3306/run/mysql.sock [root@mysql01 bin]# mysql Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 1 Server version: 5.6.39-log Source distribution Copyright (c) 2000, 2018, 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. mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | test | +--------------------+ 4 rows in set (0.12 sec)
在上面的基础,再初始化一个实例
- 建立目录授权
mkdir -p /data/my3307/{data,log/binlog,log/iblog,run,tmp} chown -R mysql:mysql /data/my3307
2.修改my.cnf
cp -rp /data/my3306/my.cnf /data/my3307/my.cnf sed -i {s/3306/3307/g} /data/my3307/my.cnf
basedir=/data/my3306 参数不变
- 初始化数据库
cd /data/my3306/ ./scripts/mysql_install_db --defaults-file=/data/my3307/my.cnf --datadir=/data/my3307/data --user=mysql
- 启动数据库服务
cd /data/my3306/bin ./mysqld_safe --defaults-file=/data/my3307/my.cnf --user=mysql &
- 查看端口信息
[root@mysql01 bin]# netstat -lnptu|grep 330 tcp6 0 0 :::3306 :::* LISTEN off (0.00/0/0) tcp6 0 0 :::3307 :::* LISTEN off (0.00/0/0)
- 登录数据库
[root@mysql01 bin]# mysql -P3307 Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 1 Server version: 5.6.39-log Source distribution Copyright (c) 2000, 2018, 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. mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | test | +--------------------+ 4 rows in set (0.23 sec)
mysqld_mutil配置多个实例
- 建立目录授权
mkdir -p /data/my3308/{data,log/binlog,log/iblog,run,tmp} chown -R mysql:mysql /data/my3308
2. 修改my.cnf 增加
basedir=/data/my3306 参数不变
- 初始化数据库
cd /data/my3306 ./scripts/mysql_install_db --defaults-file=/data/my3306/my.cnf --datadir=/data/my3308/data --user=mysql
- 启动数据库服务
cd /data/my3306/bin mysqld_multi --defaults-extra-file=/data/my3306/my.cnf start 1,2
180207 00:19:24 mysqld_safe Logging to '/data/my3306/log/error.log'. 180207 00:19:24 mysqld_safe The file /mysqld
启动信息如下:
mysqld_multi log file version 2.16; run: Wed Feb 7 10:43:34 2018 Starting MySQL servers 180207 10:43:35 mysqld_safe Logging to '/data/my3306/log/error.log'. 180207 10:43:35 mysqld_safe Logging to '/data/my3308/log/error.log'. 180207 10:43:35 mysqld_safe Starting mysqld daemon with databases from /data/my3306/data 180207 10:43:35 mysqld_safe Starting mysqld daemon with databases from /data/my3308/data
- 查看端口信息
[root@mysql01 bin]# netstat -lnptu|grep 330 tcp6 0 0 :::3306 :::* LISTEN 25185/mysqld tcp6 0 0 :::3307 :::* LISTEN 26218/mysqld tcp6 0 0 :::3308 :::* LISTEN 25197/mysqld
3.详细描述MySQL编译安装的过程(截图安装步骤)
- 选择对应版本,下载源码包
- 查看安装要求,必要的依赖包需要提前安装
- 如果CMAKE里面有额外的参数,如SSL,还需要安装openssl openssl-devel
- make的时候时间会很长,具体所需时间看机器配置
- 实例运行用户需要对所需目录具有对应的读写权限,默认022一般足够
- mysql_install_db初始化数据库时需要在basedir目录,因为要调用bin下面的my_print_defaults
$print_defaults = "$opt->{builddir}/extra/my_print_defaults";
$print_defaults = find_in_basedir($opt,"file","my_print_defaults","bin","extra");
$print_defaults='./bin/my_print_defaults';
3306和3308的配置如下:

[client] port=3306 socket=/data/my3306/mysql.sock [mysqld_multi] mysqld=/data/my3306/bin/mysqld_safe mysqladmin=/data/my3306/bin/mysqladmin log=/data/my3306/log/mysqld_multi.log [mysql] pid_file=/data/my3306/run/mysqld.pid [mysqld1] autocommit=1 general_log=off explicit_defaults_for_timestamp=true # system basedir=/data/my3306 datadir=/data/my3306/data max_allowed_packet=1g max_connections=3000 max_user_connections=2800 open_files_limit=65535 pid_file=/data/my3306/run/mysqld.pid port=3306 server_id=101 skip_name_resolve=ON socket=/data/my3306/run/mysql.sock tmpdir=/data/my3306/tmp #binlog log_bin=/data/my3306/log/binlog/binlog binlog_cache_size=32768 binlog_format=row expire_logs_days=7 log_slave_updates=ON max_binlog_cache_size=2147483648 max_binlog_size=524288000 sync_binlog=100 #logging log_error=/data/my3306/log/error.log slow_query_log_file=/data/my3306/log/slow.log log_queries_not_using_indexes=0 slow_query_log=1 log_slave_updates=ON log_slow_admin_statements=1 long_query_time=1 #relay relay_log=/data/my3306/log/relaylog relay_log_index=/data/my3306/log/relay.index relay_log_info_file=/data/my3306/log/relay-log.info #slave slave_load_tmpdir=/data/my3306/tmp slave_skip_errors=OFF #innodb innodb_data_home_dir=/data/my3306/log/iblog innodb_log_group_home_dir=/data/my3306/log/iblog innodb_adaptive_flushing=ON innodb_adaptive_hash_index=ON innodb_autoinc_lock_mode=1 innodb_buffer_pool_instances=8 #default innodb_change_buffering=inserts innodb_checksums=ON innodb_buffer_pool_size= 128M innodb_data_file_path=ibdata1:32M;ibdata2:16M:autoextend innodb_doublewrite=ON innodb_file_format=Barracuda innodb_file_per_table=ON innodb_flush_log_at_trx_commit=1 innodb_flush_method=O_DIRECT innodb_io_capacity=1000 innodb_lock_wait_timeout=10 innodb_log_buffer_size=67108864 innodb_log_file_size=1048576000 innodb_log_files_in_group=4 innodb_max_dirty_pages_pct=60 innodb_open_files=60000 innodb_purge_threads=1 innodb_read_io_threads=4 innodb_stats_on_metadata=OFF innodb_support_xa=ON innodb_use_native_aio=OFF innodb_write_io_threads=10 [mysqld2] autocommit=1 general_log=off explicit_defaults_for_timestamp=true # system basedir=/data/my3306 datadir=/data/my3308/data max_allowed_packet=1g max_connections=3000 max_user_connections=2800 open_files_limit=65535 pid_file=/data/my3308/run/mysqld.pid port=3308 server_id=101 skip_name_resolve=ON socket=/data/my3308/run/mysql.sock tmpdir=/data/my3308/tmp #binlog log_bin=/data/my3308/log/binlog/binlog binlog_cache_size=32768 binlog_format=row expire_logs_days=7 log_slave_updates=ON max_binlog_cache_size=2147483648 max_binlog_size=524288000 sync_binlog=100 #logging log_error=/data/my3308/log/error.log slow_query_log_file=/data/my3308/log/slow.log log_queries_not_using_indexes=0 slow_query_log=1 log_slave_updates=ON log_slow_admin_statements=1 long_query_time=1 #relay relay_log=/data/my3308/log/relaylog relay_log_index=/data/my3308/log/relay.index relay_log_info_file=/data/my3308/log/relay-log.info #slave slave_load_tmpdir=/data/my3308/tmp slave_skip_errors=OFF #innodb innodb_data_home_dir=/data/my3308/log/iblog innodb_log_group_home_dir=/data/my3308/log/iblog innodb_adaptive_flushing=ON innodb_adaptive_hash_index=ON innodb_autoinc_lock_mode=1 innodb_buffer_pool_instances=8 #default innodb_change_buffering=inserts innodb_checksums=ON innodb_buffer_pool_size= 128M innodb_data_file_path=ibdata1:32M;ibdata2:16M:autoextend innodb_doublewrite=ON innodb_file_format=Barracuda innodb_file_per_table=ON innodb_flush_log_at_trx_commit=1 innodb_flush_method=O_DIRECT innodb_io_capacity=1000 innodb_lock_wait_timeout=10 innodb_log_buffer_size=67108864 innodb_log_file_size=1048576000 innodb_log_files_in_group=4 innodb_max_dirty_pages_pct=60 innodb_open_files=60000 innodb_purge_threads=1 innodb_read_io_threads=4 innodb_stats_on_metadata=OFF innodb_support_xa=ON innodb_use_native_aio=OFF innodb_write_io_threads=10
3307的配置如下:

[client] port=3307 socket=/data/my3307/mysql.sock [mysql] pid_file=/data/my3307/run/mysqld.pid [mysqld] autocommit=1 general_log=off explicit_defaults_for_timestamp=true # system basedir=/data/my3306 datadir=/data/my3307/data max_allowed_packet=1g max_connections=3000 max_user_connections=2800 open_files_limit=65535 pid_file=/data/my3307/run/mysqld.pid port=3307 server_id=101 skip_name_resolve=ON socket=/data/my3307/run/mysql.sock tmpdir=/data/my3307/tmp #binlog log_bin=/data/my3307/log/binlog/binlog binlog_cache_size=32768 binlog_format=row expire_logs_days=7 log_slave_updates=ON max_binlog_cache_size=2147483648 max_binlog_size=524288000 sync_binlog=100 #logging log_error=/data/my3307/log/error.log slow_query_log_file=/data/my3307/log/slow.log log_queries_not_using_indexes=0 slow_query_log=1 log_slave_updates=ON log_slow_admin_statements=1 long_query_time=1 #relay relay_log=/data/my3307/log/relaylog relay_log_index=/data/my3307/log/relay.index relay_log_info_file=/data/my3307/log/relay-log.info #slave slave_load_tmpdir=/data/my3307/tmp slave_skip_errors=OFF #innodb innodb_data_home_dir=/data/my3307/log/iblog innodb_log_group_home_dir=/data/my3307/log/iblog innodb_adaptive_flushing=ON innodb_adaptive_hash_index=ON innodb_autoinc_lock_mode=1 innodb_buffer_pool_instances=8 #default innodb_change_buffering=inserts innodb_checksums=ON innodb_buffer_pool_size= 128M innodb_data_file_path=ibdata1:32M;ibdata2:16M:autoextend innodb_doublewrite=ON innodb_file_format=Barracuda innodb_file_per_table=ON innodb_flush_log_at_trx_commit=1 innodb_flush_method=O_DIRECT innodb_io_capacity=1000 innodb_lock_wait_timeout=10 innodb_log_buffer_size=67108864 innodb_log_file_size=1048576000 innodb_log_files_in_group=4 innodb_max_dirty_pages_pct=60 innodb_open_files=60000 innodb_purge_threads=1 innodb_read_io_threads=4 innodb_stats_on_metadata=OFF innodb_support_xa=ON innodb_use_native_aio=OFF innodb_write_io_threads=10 [mysqld_safe] datadir=/data/my3307/data
参考:
http://blog.csdn.net/kadwf123/article/details/79145700
http://blog.csdn.net/mchdba/article/details/45798139