本次安裝環境爲：
系 統：centos 6 X86_X64
內 存：不低於4G
mysql 版本：mysql-boost-5.7.18.tar.gz
本文主要講解在同主機上部署mysql多實例 門戶網站應用mysql 多實例場景 百度搜索引擎的數據庫就是多實例，一般是從庫，列如某個部門的例子，IBM 48核CPU。內存96G，跑3-4個實例；sina 網也是用的多實例，內存48G左右。門戶網站使用多實例的目的是配硬件好的服務器，節省idc機櫃的空間，同時，跑多實例讓硬件資源不浪費，針對一般的服務器最多4個實例即可，1-2兩個最合適。 多實例可以是多個配置文件對應多實例也可以一個配置文件對應多個實例 |
多實例缺點：
1、耦合度太高，一個配置文件不好管理。工作開發和運維的統一原則；降低耦合度
mysql 相關軟件包：
yum -y install ncurses-devel libaio-devel cmake
安裝需要mysql 需要創建用戶和組
useradd mysql -s /sbin/nologin -M
下載mysql 5.7 安裝包
wget https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-boost-5.7.18.tar.gz
解壓安裝包
tar -zxf mysql-boost-5.7.18.tar.gz && cd mysql-5.7.18
cmake \ -DCMAKE_INSTALL_PREFIX=/u01/app/mysql/db \ -DSYSCONFDIR=/u01/app/mysql/db/etc \ -DWITH_BOOST=./boost/boost_1_59_0 \ -DWITH_INNOBASE_STORAGE_ENGINE=1 \ -DWITH_PARTITION_STORAGE_ENGINE=1 \ -DWITH_FEDERATED_STORAGE_ENGINE=1 \ -DWITH_BLACKHOLE_STORAGE_ENGINE=1 \ -DWITH_MYISAM_STORAGE_ENGINE=1 \ -DWITH_INNODB_MEMCACHED=1 \ -DWITH_READLINE=1 \ -DENABLED_LOCAL_INFILE=1 \ -DWITH_PARTITION_STORAGE_ENGINE=1 \ -DEXTRA_CHARSETS=all \ -DDEFAULT_CHARSET=utf8 \ -DDEFAULT_COLLATION=utf8_general_ci make -j 24 make install |
#創建數據目錄
mkdir -p /data/mysql/engine/innolog
mkdir -p /data/mysql/data
mkdir -p /data/mysql/engine/innodata
mkdir -p /data/mysql/engine/undo
mkdir -p /data/mysql/log/mysql-binlog
mkdir -p /data/mysql/log/mysql-relaylog
chown mysql. /data -R
#創建mysql 配置文件目錄
mkdir /u01/app/mysql/db/etc
配置my.cnf
[mysqld] #-------------------------------------basic_my.conf------------------------------------------------------------- #5.7 #author: duxing #modify: 20160902 #version: 0.8 #------------------basic-------------------------------# user=mysql basedir = /u01/app/mysql/db datadir = /data/mysql/data pid-file = /data/mysql/mysql.pid socket=/data/mysql/mysql.sock default-storage-engine = INNODB transaction_isolation = REPEATABLE-READ binlog_cache_size = 32M max_binlog_size=512M binlog_format=row character-set-server = utf8 port=3306 server-id= 2 #sql_mode='ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION' sql_mode='STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_AUTO_VALUE_ON_ZERO,NO_ENGINE_SUBSTITUTION,ONLY_FULL_GROUP_BY' explicit_defaults_for_timestamp = true log-error = /data/mysql/mysql-error.log slow_query_log long_query_time = 10 log_warnings #------------------basic-------------------------------# #---------------directroy------------------------------# innodb_log_group_home_dir=/data/mysql/engine/innolog innodb_data_home_dir=/data/mysql/engine/innodata innodb_data_file_path = ibdata1:500M;ibdata2:150M:autoextend innodb_undo_directory=/data/mysql/engine/undo log-bin = /data/mysql/log/mysql-binlog/mysql-binlog log-bin-index = /data/mysql/log/mysql-binlog/mysql-binlog.index expire-logs-days=5 relay_log = /data/mysql/log/mysql-relaylog/mysql-relay-bin relay_log_index= /data/mysql/log/mysql-relaylog/mysql-relay-bin.index #relay_log_info_file=/data/mysql/log/mysql-relaylog/relay-log.info #---------------directroy------------------------------# #----------------engine--------------------------------# innodb_file_per_table=1 innodb_api_enable_binlog=1 innodb_buffer_pool_size=256M innodb_flush_log_at_trx_commit = 1 innodb_log_buffer_size = 16M innodb_log_file_size = 512M innodb_log_files_in_group = 4 innodb_max_dirty_pages_pct = 75 innodb_lock_wait_timeout = 120 innodb_buffer_pool_instances=2 innodb_force_recovery=0 #recover innodb_purge_threads=4 #undo purge innodb_write_io_threads = 16 innodb_read_io_threads = 16 innodb_io_capacity=1200 innodb_old_blocks_pct=37 innodb_old_blocks_time=1000 innodb_undo_tablespaces=12 innodb_undo_logs=40 innodb_commit_concurrency = 1000 #commit/s innodb_thread_concurrency = 1000 #use for cpu mutex innodb_thread_sleep_delay = 200 #ms delay time #innodb_use_native_aio=1 #----------------engine--------------------------------# # ------------global cache -------------------------# read_buffer_size = 32M read_rnd_buffer_size = 128M sort_buffer_size = 64M join_buffer_size = 64M query_cache_size = 128M query_cache_limit = 4M tmp_table_size = 128M # ------------global cache -------------------------# #----------------replicat-----------------------------# #read_only=1 relay_log_purge=0 log_slave_updates=1 slave_parallel_workers=4 log_bin_trust_function_creators=1 binlog_checksum = CRC32 slave_allow_batching = 1 master_verify_checksum = 1 slave_sql_verify_checksum = 1 binlog_rows_query_log_events = 1 gtid-mode=on enforce-gtid-consistency=1 sync-master-info=1 relay_log_purge = 1 #relaylog的自動修復 relay_log_recovery = 1 master_info_repository = TABLE relay_log_info_repository = TABLE #set global rpl_semi_sync_master_enabled = 1 #set global rpl_semi_sync_slave_enabled =1 #rpl_semi_sync_master_timeout=200 #----------------replicat-----------------------------# #-----------------thread------------------------------# table_open_cache = 2048 #reduce open descriptor thread_stack = 256K # *thead_num < useable mem thread_cache_size = 128 #reuse thread in mem #-----------------thread------------------------------# #----------------network-----------------------------# back_log = 512 #skip-networking #skip-grant-tables skip-name-resolve max_connections = 3000 max_connect_errors = 30 table_open_cache = 4096 max_allowed_packet = 64M max_heap_table_size = 512M #----------------network-----------------------------# #-----------------------timeout------------------------# connect-timeout = 10 wait-timeout = 8000 interactive-timeout = 8000 slave-net-timeout = 60 net_read_timeout = 30 net_write_timeout = 60 net_retry_count = 10 net_buffer_length = 16384 #-----------------------timeout------------------------# [mysql] auto-rehash [client] socket=/data/mysql/mysql.sock port=3306 |
刪除 /etc/my.cnf
/u01/app/mysql/db/etc
初始化之前需要查看error 日誌
cat /data/mysql/mysql-error.log
cd /u01/app/mysql/db
./bin/mysqld --initialize --basedir=/u01/app/mysql/db --datadir=/data/mysql/data --user=mysql
# --initialize-insecure option 使用這個初始化數據庫之後不再需要登錄後進行alter user
#cat /data/mysql/mysql-error.log
/u01/app/mysql/db/bin/mysqld_safe --skip-grant-tables &
update mysql.user set authentication_string=password('123.com') where user='root' and Host = 'localhost';
#啓動mysql 服務
/u01/app/mysql/db/support-files/mysql.server restart
##需要重新更改密碼否則無法正常使用庫
alter user 'root'@'localhost' identified by '123.com';
#設置開機自啓動
cp /u01/app/mysql/db/support-files/mysql.server /etc/init.d/mysql.server-5.7
chmod +x /etc/init.d/mysql.server-5.7
chkconfig --addmysql.server-5.7
#設置環境變量
vim ~/.bashrc
#set mysql
NHOME=/u01/app/mysql/db
PATH=$PATH:$NHOME/bin
source ~/.bashrc
mysql 多實例可以寫兩個不同的配置文件與不同的端口 初始化庫時候直接更改即可