模板建站公司,单位的网站的建设方案,正确的网线的顺序图,搜索网站制作教程一. 准备工作1 删除本地CentOS7中的mariadb#xff1a;查看系统中是否已安装 mariadb 服务#xff1a;rpm -qa | grep mariadb或yum list installed | grep mariadb如果已安装则删除 mariadb及其依赖的包#xff1a;yum -y remove mariadb-libs-5.5.44-2.el7.centos.x86_64关…一. 准备工作1 删除本地CentOS7中的mariadb查看系统中是否已安装 mariadb 服务rpm -qa | grep mariadb或yum list installed | grep mariadb如果已安装则删除 mariadb及其依赖的包yum -y remove mariadb-libs-5.5.44-2.el7.centos.x86_64关闭防火墙firewall-cmd --state #查看防火墙状态systemctl stop firewalld.service #关闭防火墙systemctl is-enabled firewalld.service;echo $? #查看防火墙是否开机自启systemctl disable firewalld.service #禁止防火墙开机启动MySQL依赖于libaio 库安装libaioyum search libaioyum install libaio2.下载安装包mkdir /datacd /data/yum -y install wgetwget https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz3. 解压、重命名tar -zxvf mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz -C /datamv /data/mysql-5.7.20-linux-glibc2.12-x86_64/ /data/mysql57mkdir mysql #数据目录与安装目录分离便于以后MySQL升级二. 安装MySQL1.添加用户和组groupadd mysqluseradd mysql -g mysql2.配置文件/etc/my.cnf主要参数及取值如下(相关取值请根据实际环境做调整如内存配置参数等)#######[client]socket /data/mysql/data/mysql.sockdefault-character-setutf8mb4#loose-local-infile0[mysqld]log_bin_trust_function_creators1secure_file_priv/tmp########dirsettings########basedir /data/mysql57datadir /data/mysql/datapid-file /data/mysql/data/mysql.pidsocket /data/mysql/data/mysql.socktmpdir /data/mysql/tmplog-bin /data/mysql/mysql_log/mysql-binlog-error /data/mysql/mysql_log/mysql.errgeneral_log_file/data/mysql/mysql_log/mysql.genlogslow_query_log_file /data/mysql/mysql_log/mysql_slow_new.logrelay_log /data/mysql/mysql_log/relay.log########server setting########sql_mode ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTIONserver-id 2022port 3306character-set-serverutf8mb4collation_serverutf8mb4_unicode_cilower_case_table_names 0skip_name_resolve 1#max_connect_errors 1000max_connections 2000thread_cache_size256#thread_stack 262144#back_log80max_allowed_packet 134217728event_scheduler 1local-infile0# lower_case_table_names 1explicit_defaults_for_timestamp 1expire_logs_days 15log_bin_trust_function_creators1####.frm/.ibd files qty relatedopen_files_limit65535innodb_open_files65535table_open_cache65535table_definition_cache65535#### seesion buffer relatedread_buffer_size 262144read_rnd_buffer_size 524288sort_buffer_size 8388608join_buffer_size 8388608####memory table sizetmp_table_size67108864max_heap_table_size67108864####timeoutinteractive_timeout 1800wait_timeout 1800# connect_timeout10########slow query ########slow_query_log 1log_slow_slave_statements 1log_queries_not_using_indexes 1log_throttle_queries_not_using_indexes 10long_query_time 1#min_examined_row_limit 10000########innodb settings########innodb_buffer_pool_size 193273528320innodb_buffer_pool_instances 16innodb_buffer_pool_dump_pct 40innodb_lru_scan_depth 2048innodb_page_cleaners 16#innodb_purge_threads 4innodb_sort_buffer_size 67108864#innodb_file_per_table 1#innodb_flush_log_at_trx_commit 1innodb_undo_log_truncate 1innodb_undo_tablespaces 3innodb_max_undo_log_size 2147483648innodb_purge_rseg_truncate_frequency 128innodb_log_file_size 1073741824innodb_log_files_in_group 3innodb_log_buffer_size 16777216innodb_flush_methodO_DIRECTinnodb_flush_neighbors 0innodb_print_all_deadlocks 1innodb_strict_mode 1#innodb_lock_wait_timeout 50innodb_io_capacity 32768innodb_io_capacity_max 65536innodb_thread_concurrency 32innodb_write_io_threads 8innodb_read_io_threads 8########replication settings########master_info_repositoryTABLErelay_log_info_repositoryTABLEgtid_modeonenforce_gtid_consistency 1binlog_gtid_simple_recovery1relay_log_recovery 1slave-parallel-type LOGICAL_CLOCKslave-parallel-workers 16slave_transaction_retries128slave_preserve_commit_order1log_slave_updates1binlog_formatROWlog_timestampssystembinlog_rows_query_log_events 1binlog_row_imagefullslave_skip_errorsddl_exist_errors########semisyncreplication settings##########plugin_dir/data/mysql/plugin/#plugin_load rpl_semi_sync_mastersemisync_master.so;rpl_semi_sync_slavesemisync_slave.so#rpl_semi_sync_master_enabled 1#rpl_semi_sync_master_timeout 5000#rpl_semi_sync_slave_enabled 1[mysqldump]quick说明请一定记得上面 配置模板文件中的server-id 参数一定要修改。否则在配置 主从复制或者MHA时会报错。例如错误信息 2018-10-09T16:13:53.20511508:00 11 [ERROR] [MY-013117] [Repl] Slave I/O for channel : Fatal error: The slave I/O thread stops because master and slave have equal MySQL server ids; these ids must be different for replication to work (or the --replicate-same-server-id option must be used on slave but this does not always make sense; please check the manual before using it). Error_code: MY-0131173. 创建目录并授权cd /data/mysqlmkdir mysql_logchown -R mysql.mysql mysql_log/mkdir tmpchown -R mysql.mysql tmp/说明有时候可能我们只是将MYSQL的二进制文件从其它的服务器Copy至本地。例如我们在安装MYSQL8.0 时安装文件从其它的服务Copy到本地文件命名为mysql80。如下图此时还需要执行以下权限所以 我手动增加了一下权限执行代码如下chmod -R 755 /data/mysql80/bin/4.初始化MySQL/data/mysql57/bin/mysqld --defaults-file/etc/my.cnf --initialize --usermysql --basedir/data/mysql57 --datadir/data/mysql/data说明主参数--defaults-file/etc/my.cnf必须紧接在mysqld后面如果做第二个以后的参数加入时则会出现报错[ERROR] unknown variable defaults-file/etc/my.cnf注意密码5.7初始化后会生成一个临时密码存在mysql.err[Note] A temporary password is generated for rootlocalhost: XXXXXXXX也就是rootlocalhost:后的字符串。5.添加到MySQL启动脚本到系统服务,并且设置开启启动cp -a /data/mysql57/support-files/mysql.server /etc/init.d/mysqld设置开机启动和检查是否成功chkconfig mysqld onchkconfig--list | grep mysqld6. 创建mysql软链接至/usr/bin下ln -s /data/mysql57/bin/mysql /usr/bin7.启动MySQL服务service mysqld start说明如果还是使用的Copy文件的方式例如我们前面 Copy的mysql80 二进制文件 此处就会报错此时 还要执行以下赋权命令 chmod -R 755 ./mysql.server (这个文件是 /data/mysql80/support-files)和chmod -R 755 /etc/init.d/mysqld8. 登录MySQL修改root密码mysql -uroot -pXXXXXXXmysql set passwordpassword(XXXXXXX2);说明 MySQL 8.0 是报错的ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near password(XXXXX) at line 1在登录MySQL修改root密码时使用就方法 SET PASSWORDPASSWORD(‘[新密码]’) 报错。查看网上的相关解释为以前版本的MySQL的密码认证插件是“mysql_native_password”而现在使用的是“caching_sha2_password”。解决方案ALTER USER rootlocalhost IDENTIFIED WITH mysql_native_password BY 新密码;FLUSH PRIVILEGES;
