My sql administration

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mysql administration with command

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  • By default MySQL listens on all your interfaces for database queries from remote MySQL clients. You can see this using netstat -an. Your server will be seen to be listening on IP address 0.0.0.0 (all) on TCP port 3306. Multiple MySQL Instances
  • My sql administration

    1. 1. Mohd Yasin Abd Karimyasin@teras-solution.com
    2. 2.  Configuring Monitoring, Starting & Stopping Managing Users and Connection Performing backups Others
    3. 3.  Mysqladmin or mysql GUI ◦ MySQL Administrator ◦ MySQL Workbench ◦ phpMyAdmin
    4. 4.  OS packages place files in many areas and varies ◦ e.g. /usr/lib, /var/lib, /var/log, /etc Source rpm, yum, .tar.gz, exe Online/repo update ◦ #yum update mysql-* For Ms Windows Environment C:>cd localmysqlbin C:localmysqlbin>Local folder normally Program Files folder
    5. 5.  Start MySQL process before create database To configure MySQL start at boot time #chkconfig mysqld on Or using GUI tools such as OS Services Management
    6. 6.  After boot time using the services commands #service mysqld start #service mysqld stop #Service mysqld restart Remember to restart mysqld process every time after configuration changed
    7. 7.  to know whether your MySQL server is alive #pgrep mysqld Should get response process ID numbers Or #mysqladmin –u root –p ping The "mysqld is alive" message tells you that your MySQL server is running ok. If your MySQL server is not running, you will get a "connect ... failed" message.
    8. 8.  my.cnf ◦ Watch out for /etc/my.cnf, /etc/mysql/my.cnf To get the server listening on all interfaces, use 0.0.0.0 as the bind address. i.e.: --bind-address=0.0.0.0
    9. 9.  Configured to listen TCP/IP Port (default 3306) Additional Instances ◦ Different Ports ◦ Different IP‟s using default Port Local connection using Socket
    10. 10.  Login to MySQL server #mysql –h hostname –u root -p Create a database msql> create database [databasename]; List all databases on the MySQL server msql> show databases;
    11. 11.  Swicth to a database msql> use [db_name]; To see all the tables in the db msql> show tables; To delete a db msql> drop database [databasename];
    12. 12.  To see database‟s field formats msql> describe [table name]; To delete a table msql> drop table [table name]; Show all data in a table msql> SELECT * FROM [table name];
    13. 13.  SHOW TABLES; SHOW WARNINGS; SHOW STATUS; FLUSH STATUS; SHOW VARIABLES; SHOW VARIABLES LIKE „%size%‟; SHOW VARIABLES LIKE „sort_buffer_size‟; SHOW GLOBAL STATUS;
    14. 14.  to check version number of your MySQL server C:localmysqlbin>mysqladmin -u root version
    15. 15.  According to the /etc/my.cnf Usually located in subdirectory /var/lib/mysql/ directory Example : test database ◦ /var/lib/mysql/test
    16. 16.  Root or superuser account is used to create and delete database New installation MySQL set password #mysqladmin –u root password new-password
    17. 17.  to know what else you can do with "mysqladmin", you should run the "-?" #mysqladmin –?
    18. 18.  Creating new user # mysql -u root -p mysql> use mysql; mysql> INSERT INTO user (Host,User,Password) VALUES(%,username,PASSWORD(password)); mysql> flush privileges;
    19. 19.  Change a user password from unix shell # mysqladmin -u username -h hostname.org -p password new-password Change user password from MySQL prompt # mysql -u root -p mysql> SET PASSWORD FOR user@hostname = PASSWORD(passwordhere); mysql> flush privileges;
    20. 20.  Update root password # mysqladmin -u root -p oldpassword newpassword Allow the user “bob” to connect to server from localhost using password „passwd‟ # mysql -u root -p mysql> use mysql; mysql> grant usage on *.* to bob@localhost identified by passwd; mysql> flush privileges;
    21. 21.  Give user privileges for a db. # mysql -u root -p mysql> use mysql; mysql> INSERT INTO db (Host,Db,User,Select_priv,Insert_priv,Update_priv,Delete_priv ,Create_priv,Drop_priv) VALUES (%,databasename,username,Y,Y,Y,Y,Y,N); mysql> flush privileges; or mysql> grant all privileges on databasename.* to username@localhost; mysql> flush privileges;
    22. 22.  To update info already in table mysql> UPDATE [table name] SET Select_priv = Y,Insert_priv = Y,Update_priv = Y where [field name] = user; Delete a rows from table mysql> DELETE from [table name] where [field name] = whatever; Update database permissions/privileges mysql> flush privileges;
    23. 23.  Dump all databases for backup # mysqldump -u root -ppassword --opt >/tmp/alldatabases.sql Dump one database for backup # mysqldump -u username -ppassword --databases databasename >/tmp/databasename.sql Dump a table from a database # mysqldump -c -u username -ppassword databasename tablename > /tmp/databasename.tablename.sql
    24. 24.  Restore database / table from backup # mysql -u username -ppassword databasename < /tmp/databasename.sql
    25. 25.  Example mysql> create table [table name] (personid int(50) not null auto_increment primary key,firstname varchar(35),middlename varchar(50),lastnamevarchar(50) default „yasin); mysql> CREATE TABLE [table name] (firstname VARCHAR(20), middleinitial VARCHAR(3), lastname VARCHAR(35),suffix VARCHAR(3),officeid VARCHAR(10),userid VARCHAR(15),username VARCHAR(8),email VARCHAR(35),phone VARCHAR(25), groups VARCHAR(15),datestamp DATE,timestamp time,pgpemail VARCHAR(255));
    26. 26.  yasin@teras-solution.com

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