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| − | = THIS PAGE IS A DRAFT, NOT A REAL COURSE PAGE =
| + | [http://wiki.littlesvr.ca/wiki/OPS345_Lab_4 This page has moved.] |
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| − | ''' The current schedule for OPS345 is here: [[OPS335_Weekly_Schedule]]
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| − | * Data that is often modified is typically stored in a database.
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| − | * AWS provides database services via RDS, though you could install your own DBMS like MariaDB on your own VM.
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| − | * In the AWS console go to RDS. Create ops345db, with a long password that's different from other passwords. Put it in ops345sgprivate. This one will be used/seen in plain text sometimes.
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| − | ** It will complain about not having two subnets in different availability zones.
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| − | * In VPC/Subnets, create a new one in vpc-ops345 named subnet2-ops345, in us-east-1b instead of 1a. 10.3.45.128/25
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| − | * Go back and try again to create the database.
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| − | * Assign temporary elastic IP to yum install mariadb, no need for server.
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| − | ** Will disassociate and release the elastic ip at the end of the lab.
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| − | * Do the rest of the lab as the regular user, don't use root.
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| − | * In the AWS Console go to RDS, and find the FQDN ("Endpoint") for the database. Such as ops345db.cobdogt5aykb.us-east-1.rds.amazonaws.com - record that.
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| − | * Try to connect: mysql -u root -plongdbpassword -h ops345db.cobdogt5aykb.us-east-1.rds.amazonaws.com
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| − | ** It won't work, the firewall (SG) won't allow it. Modify ops345sgprivate to allow incoming TCP port 3306 (MySQL) from ops345sgprivate.
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| − | * Should be able to log in now. If you get something like this: "ERROR 1045 (28000): Access denied for user 'root'@'10.3.45.11' (using password: YES)" then double-check the master username under RDS/ops345db/Configuration and you can reset the password via Modify (might take a few minutes to propagate).
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| − | ** See also https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_Troubleshooting.html
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| − | * Most mysql commands need to have a semicolon at the end.
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| − | * The mysql commandline is nothing like the linux shell. Have to use mysql (or plain SQL) commands.
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| − | * Out of the box show databases; shows 4 databses, all of which are used internally by mysql, they are not for you to store data.
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| − | * use mysql; show tables; select * from user; select user from user;
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| − | * mysql root is not the same as the linux root, but it is an administrator and you should only use it for creating users, databases, and assigning permissions.
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| − | * Typically you would use something like this: " MariaDB> grant all privileges on DATABASE_NAME.* TO 'USER_NAME'@'%' identified by 'PASSWORD'; " but that won't work on AWS RDS because your root user doesn't have ALL PRIVILEGES, so can't grant them to another user.
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| − | * Instead create a user first: CREATE USER 'andrewdb'@'%' IDENTIFIED BY 'andrewdbpassword';
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| − | * Find what privileges your root has: show grants for 'root';
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| − | * Give the most important ones to your db user: " GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, INDEX, ALTER, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE ON firstdb.* TO 'andrewdb'@'%'; "
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| − | * Log out from root
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| − | * mysql -u andrewdb -pandrewdbpassword -h ops345db.cobdogt5aykb.us-east-1.rds.amazonaws.com
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| − | * show databases; - note that the list is shorter.
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| − | * use firstdb;
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| − | * show tables;
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| − | * Create tables, insert data, select: https://www.guru99.com/mariadb-tutorial-install.html#6
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| − | * A realistic use case for your career: download and instal nextcloud.
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| − | * wget the .tar.bz2 (not zip)
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| − | * Extract it into /var/www/html so you have a /var/www/html/nextcloud/index.html
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| − | * https://docs.nextcloud.com/server/latest/admin_manual/installation/source_installation.html
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| − | ** As root, vi /etc/httpd/conf.d/nextcloud.conf <source>Alias /nextcloud "/var/www/html/nextcloud/"
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| − | <Directory /var/www/html/nextcloud/>
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| − | Require all granted
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| − | AllowOverride All
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| − | Options FollowSymLinks MultiViews
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| − | <IfModule mod_dav.c>
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| − | Dav off
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| − | </IfModule>
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| − | </Directory></source>
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| − | ** chown -R apache.apache nextcloud/
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| − | ** Get an error: <source>This version of Nextcloud requires at least PHP 7.3
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| − | You are currently running 5.4.16. Please update your PHP version.</source>
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| − | ** amazon-linux-extras | grep php
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| − | ** amazon-linux-extras enable php7.4
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| − | ** yum clean metadata
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| − | ** yum install php-cli php-pdo php-fpm php-json php-mysqlnd
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| − | ** restart apache
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| − | ** Get module errors from website, install them:
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| − | *** amazon-linux-extras enable httpd_modules
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| − | *** yum install php-dom php-gd php-mbstring
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| − | ** Should now let you continue the setup.
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| − | ** Create an admin account. Use ops345admin/nextcloudadminpass
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| − | ** Create a new database and user and password nextclouddb/nextclouduser/nextclouddbpassword
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| − | *** CREATE DATABASE nextclouddb;
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| − | *** CREATE USER 'nextclouduser'@'%' IDENTIFIED BY 'nextclouddbpassword';
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| − | *** GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, INDEX, ALTER, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE ON nextclouddb.* TO 'nextclouduser'@'%';
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| − | ** Fill in the database details in the nextcloud web setup screen.
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| − | ** Look around inside the nextcloud, create user yoursenecaid, unlimited quota
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| − | ** Log in as yoursenecaid, upload a picture, share a link to it.
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| − | * When done with everything, release the elastic ip.
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| − | * Confirm that everything still works.
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| − | * As an extra challenge: get rid of the index.php in the URLs.
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