安裝環境或方式
環境： centos7_64 安裝方式：官網下載安裝mysql-server ps:mysql安裝其實不難，可是並無把步驟記下來，因此我把安裝的步驟整理出來方便之後使用html
安裝mysql
順序執行下列語句mysql
[root@db01 mysql]# cd /usr/local/mysql # wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm # rpm -ivh mysql-community-release-el7-5.noarch.rpm # yum install mysql-community-server
配置mysql
- 配置編碼格式 /etc/my.cnf 最後面添加 default-character-set =utf8
default-character-set =utf8 - 設置密碼
mysql> set password for 'root'@'localhost' =password('123456');
Query OK, 0 rows affected (0.01 sec)
- 新建用戶
mysql> create user 'hdfs'@'%' identified by '123456'; Query OK, 0 rows affected (0.00 sec)
- 表的全部權限賦值給位於全部IP地址的root用戶
mysql> grant all privileges on *.* to root@'%' identified by '123456'; Query OK, 0 rows affected (0.00 sec)
- 刷新修改
mysql> flush privileges; Query OK, 0 rows affected (0.00 sec)
安裝過程日誌
[root@db01 mysql]# wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm
--2019-02-13 10:04:20-- http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm
Resolving dev.mysql.com (dev.mysql.com)... 137.254.60.11
Connecting to dev.mysql.com (dev.mysql.com)|137.254.60.11|:80... connected.
HTTP request sent, awaiting response... dRead error (Connection reset by peer) in headers.
Retrying.
--2019-02-13 10:04:31-- (try: 2) http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm
Connecting to dev.mysql.com (dev.mysql.com)|137.254.60.11|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: https://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm [following]
--2019-02-13 10:04:34-- https://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm
Connecting to dev.mysql.com (dev.mysql.com)|137.254.60.11|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://repo.mysql.com//mysql-community-release-el7-5.noarch.rpm [following]
--2019-02-13 10:04:36-- https://repo.mysql.com//mysql-community-release-el7-5.noarch.rpm
Resolving repo.mysql.com (repo.mysql.com)... 173.223.96.113
Connecting to repo.mysql.com (repo.mysql.com)|173.223.96.113|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 6140 (6.0K) [application/x-redhat-package-manager]
Saving to: ‘mysql-community-release-el7-5.noarch.rpm’
100%[==========================================================================>] 6,140 --.-K/s in 0s
2019-02-13 10:04:38 (34.2 MB/s) - ‘mysql-community-release-el7-5.noarch.rpm’ saved [6140/6140]
[root@db01 mysql]# ll
total 8
-rw-r--r--. 1 root root 6140 Nov 12 2015 mysql-community-release-el7-5.noarch.rpm
[root@db01 mysql]# rpm -ivh mysql-community-release-el7-5.noarch.rpm
Preparing... ################################# [100%]
Updating / installing...
1:mysql-community-release-el7-5 ################################# [100%]
[root@db01 mysql]# yum install mysql-community-server
Loaded plugins: fastestmirror, langpacks
Existing lock /var/run/yum.pid: another copy is running as pid 68490.
Another app is currently holding the yum lock; waiting for it to exit...
The other application is: PackageKit
Memory : 36 M RSS (860 MB VSZ)
Started: Wed Feb 13 10:04:58 2019 - 00:07 ago
State : Running, pid: 68490
Another app is currently holding the yum lock; waiting for it to exit...
The other application is: PackageKit
Memory : 44 M RSS (868 MB VSZ)
Started: Wed Feb 13 10:04:58 2019 - 00:09 ago
State : Sleeping, pid: 68490
Another app is currently holding the yum lock; waiting for it to exit...
The other application is: PackageKit
Memory : 47 M RSS (872 MB VSZ)
Started: Wed Feb 13 10:04:58 2019 - 00:11 ago
State : Sleeping, pid: 68490
Another app is currently holding the yum lock; waiting for it to exit...
The other application is: PackageKit
Memory : 47 M RSS (872 MB VSZ)
Started: Wed Feb 13 10:04:58 2019 - 00:13 ago
State : Sleeping, pid: 68490
Loading mirror speeds from cached hostfile
* base: mirrors.cn99.com
* extras: mirrors.tuna.tsinghua.edu.cn
* updates: mirrors.tuna.tsinghua.edu.cn
Resolving Dependencies
--> Running transaction check
---> Package mysql-community-server.x86_64 0:5.6.43-2.el7 will be installed
--> Processing Dependency: mysql-community-common(x86-64) = 5.6.43-2.el7 for package: mysql-community-server-5.6.43-2.el7.x86_64
--> Processing Dependency: mysql-community-client(x86-64) >= 5.6.10 for package: mysql-community-server-5.6.43-2.el7.x86_64
--> Running transaction check
---> Package mysql-community-client.x86_64 0:5.6.43-2.el7 will be installed
--> Processing Dependency: mysql-community-libs(x86-64) >= 5.6.10 for package: mysql-community-client-5.6.43-2.el7.x86_64
---> Package mysql-community-common.x86_64 0:5.6.43-2.el7 will be installed
--> Running transaction check
---> Package mariadb-libs.x86_64 1:5.5.60-1.el7_5 will be obsoleted
---> Package mysql-community-libs.x86_64 0:5.6.43-2.el7 will be obsoleting
--> Finished Dependency Resolution
Dependencies Resolved
====================================================================================================================
Package Arch Version Repository Size
====================================================================================================================
Installing:
mysql-community-libs x86_64 5.6.43-2.el7 mysql56-community 2.0 M
replacing mariadb-libs.x86_64 1:5.5.60-1.el7_5
mysql-community-server x86_64 5.6.43-2.el7 mysql56-community 59 M
Installing for dependencies:
mysql-community-client x86_64 5.6.43-2.el7 mysql56-community 20 M
mysql-community-common x86_64 5.6.43-2.el7 mysql56-community 257 k
Transaction Summary
====================================================================================================================
Install 2 Packages (+2 Dependent packages)
Total download size: 81 M
Is this ok [y/d/N]: y
Downloading packages:
warning: /var/cache/yum/x86_64/7/mysql56-community/packages/mysql-community-common-5.6.43-2.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Public key for mysql-community-common-5.6.43-2.el7.x86_64.rpm is not installed
(1/4): mysql-community-common-5.6.43-2.el7.x86_64.rpm | 257 kB 00:00:03
(2/4): mysql-community-libs-5.6.43-2.el7.x86_64.rpm | 2.0 MB 00:00:40
(3/4): mysql-community-client-5.6.43-2.el7.x86_64.rpm | 20 MB 00:06:53
(4/4): mysql-community-server-5.6.43-2.el7.x86_64.rpm | 59 MB 00:27:40
--------------------------------------------------------------------------------------------------------------------
Total 49 kB/s | 81 MB 00:28:25
Retrieving key from file:/etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
Importing GPG key 0x5072E1F5:
Userid : "MySQL Release Engineering <mysql-build@oss.oracle.com>"
Fingerprint: a4a9 4068 76fc bd3c 4567 70c8 8c71 8d3b 5072 e1f5
Package : mysql-community-release-el7-5.noarch (installed)
From : file:/etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
Is this ok [y/N]: y
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Warning: RPMDB altered outside of yum.
Installing : mysql-community-common-5.6.43-2.el7.x86_64 1/5
Installing : mysql-community-libs-5.6.43-2.el7.x86_64 2/5
Installing : mysql-community-client-5.6.43-2.el7.x86_64 3/5
Installing : mysql-community-server-5.6.43-2.el7.x86_64 4/5
Erasing : 1:mariadb-libs-5.5.60-1.el7_5.x86_64 5/5
Verifying : mysql-community-server-5.6.43-2.el7.x86_64 1/5
Verifying : mysql-community-common-5.6.43-2.el7.x86_64 2/5
Verifying : mysql-community-libs-5.6.43-2.el7.x86_64 3/5
Verifying : mysql-community-client-5.6.43-2.el7.x86_64 4/5
Verifying : 1:mariadb-libs-5.5.60-1.el7_5.x86_64 5/5
Installed:
mysql-community-libs.x86_64 0:5.6.43-2.el7 mysql-community-server.x86_64 0:5.6.43-2.el7
Dependency Installed:
mysql-community-client.x86_64 0:5.6.43-2.el7 mysql-community-common.x86_64 0:5.6.43-2.el7
Replaced:
mariadb-libs.x86_64 1:5.5.60-1.el7_5
Complete!
[root@db01 mysql]# ll
total 8
-rw-r--r--. 1 root root 6140 Nov 12 2015 mysql-community-release-el7-5.noarch.rpm
[root@db01 mysql]# service mysqld restart
Redirecting to /bin/systemctl restart mysqld.service
s[root@db01 mysql]# mysql -u root
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.6.43 MySQL Community Server (GPL)
Copyright (c) 2000, 2019, 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>
可能遇到的問題
鏈接mysql報錯
在退出來從新鏈接mysql的時候報錯，不管是用root仍是新建的用戶hdfs,看起來像是密碼沒有生效sql
[root@db01 hdfs]# mysql -uhdfs -p'123456' Warning: Using a password on the command line interface can be insecure. ERROR 1045 (28000): Access denied for user 'hdfs'@'localhost' (using password: YES)
經過查閱資料，發現這個錯誤通常是由密碼錯誤引發，解決的辦法天然就是重置密碼。在這以前我也重置過密碼，至於爲何沒生效搞懂，應該是方法不對，因此在規範了重置密碼後這個問題就解決了 如今連mysql都鏈接不上，更談不上重置密碼之類的操做了（也許有方法直接重置，可是我母雞啊） 那麼就要經過一下步驟來重置密碼了數據庫
- MySQL的密碼認證過程
[root@db01 mysql]# vim /etc/my.cnf
在文件中 [mysqld] 下添加 skip-grant-tables #添加跳過密碼驗證的語句vim
# For advice on how to change settings please see # http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html [mysqld] skip-grant-tables #添加跳過密碼驗證的語句 # # Remove leading # and set to the amount of RAM for the most important data # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%. # innodb_buffer_pool_size = 128M # # Remove leading # to turn on a very important data integrity option: logging # changes to the binary log between backups. # log_bin # # Remove leading # to set options mainly useful for reporting servers. # The server defaults are faster for transactions and fast SELECTs. # Adjust sizes as needed, experiment to find the optimal values. # join_buffer_size = 128M # sort_buffer_size = 2M # read_rnd_buffer_size = 2M datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 # Recommended in standard MySQL setup sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid default-character-set =utf8
wq 保存文檔並退出 接下來 service mysqld restart #重啓mysql 有些用 service mysql restart mysql #免密碼登錄 use mysql; 切換數據庫 update user set password=password("123456") where user="root"; #修改密碼 flush privileges; #刷新修改 quit ；#退出 操做以下centos
[root@db01 mysql]# service mysqld restart
Redirecting to /bin/systemctl restart mysqld.service
[root@db01 mysql]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.6.43 MySQL Community Server (GPL)
Copyright (c) 2000, 2019, 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> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> update user set password=password("123456") where user="root";
Query OK, 5 rows affected (0.00 sec)
Rows matched: 5 Changed: 5 Warnings: 0
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> quit
接下來my.cnf,去掉或者註釋掉剛纔添加的內容，保存退出oracle
[mysqld] # skip-grant-tables #添加跳過密碼驗證的語句
從新啓動mysqlapp
[root@db01 mysql]# service mysqld restart Redirecting to /bin/systemctl restart mysqld.service [root@db01 mysql]# mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 2 Server version: 5.6.43 MySQL Community Server (GPL) Copyright (c) 2000, 2019, 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> exit Bye
登錄輸入用戶密碼登錄mysql成功socket
本文爲本人平常工做整理總結，轉載請註明出處！！！ide