Yesterday, I installed an apche web server and phpmyadmin on my raspberry-py. How can I connect my raspberry-pi to databases in phpmyadmin with python? Can I use MySQL? Thank, I hope you understand my question and sorry for my bad english.
Your question is quite unclear. But from my understanding, here is what you should try doing: (Note: I am assuming you want to connect your Pi to a database to collect data and store in an IoT based application)
Get a server. Any Basic server would do. I recommend DigitalOcean or AWS LightSail. They have usable servers for just $5 per month. I recommend Ubuntu 16.04 for ease of use.
SSH into the server with your terminal with the IP address you got when you created the server
Install Apache, MySQL, Python, PHPMyAdmin on the server.
Write your web application in any language/framework you want.
Deploy it and write a separate program to make HTTP calls to the said web server.
MySQL is the Database server. Python is the language that is used to execute any instructions. PHPMyAdmin is the interface to view MySQL Databases and Tables. Apache is the webserver that serves the application you have written to deal with requests.
I strongly recommend understanding the basics of Client-Server model of computing over HTTP.
Alternatively, you could also use the approach of Using a DataBase-as-a-service from any popular cloud service provider(Eg., AWS RDS), to make calls directly into the DB.
Related
I haven't been able to find any documentation regarding whether it's possible to access SQLITE3 (using Python) when the SQLITE database is hosted externally:
I have my SQLITE3 database hosted on my VPS (alongside some other stuff that doesn't really matter) - rather than having it as a local file with my Python program.
Therefore, is it possible for me to connect to the SQLITE database which is hosted on my VPS, or will the SQLITE DB have to be hosted locally for me to be able to do this?
The reason I want it to be accessible from my VPS is because I want to be able to run the program on multiple computers and them all have the same access to the database- if this isn't possible, are there any other options which would allow me to do this?
If you want to have a database server with external, possibly remote, applications interacting a client-server protocol switch to PostgreSQL, MariaDB, etc.
see: How to connect to SQLite3 database server?
I have built an app that uses mysql database with Python, I would love to share some functionalities with different applications and that calls for an online database feature, kindly give me some insights over how i can move a python mysql database to online and how to make calls to it in order to facilitate for sharing of data between different applications.
I don't exactly know what you are calling a python database but there are some options here that you might want to consider
First, use heroku to host your app and heroku postgress to host your databaseOr you can use an EC2 aws machine to host your app and it's database (in case it's a custom code that you can't call from a browser using heroku)with both of these options you can access you database and the appp with the second one you can install other services such as ssh and other.
I spent the whole yesterday migrating my django application to OpenShift (I selected the free solution and my application is using one small gear). My application is now up and running and there are no issues visiting the site using a browser.
However I have a .NET (C#) application which accompanies the web application and it will be run by many different users and it needs to access the database but I can not find a way to do this in OpenShift.
All the different IP addresses seems to be local and I can not find a way to access the MySQL database remotely. Below are the environment variables from OpenShift:
env | grep MYSQL
OPENSHIFT_MYSQL_DIR=/var/lib/openshift/.../mysql/
OPENSHIFT_MYSQL_DB_PORT=3306
OPENSHIFT_MYSQL_DB_HOST=127.13.169.130
OPENSHIFT_MYSQL_DB_PASSWORD=...
OPENSHIFT_MYSQL_IDENT=redhat:mysql:5.5:0.2.9
OPENSHIFT_MYSQL_DB_USERNAME=...
OPENSHIFT_MYSQL_DB_SOCKET=/var/lib/openshift/.../mysql//socket/mysql.sock
OPENSHIFT_MYSQL_DB_URL=mysql://..-...#127.13.169.130:3306/
OPENSHIFT_MYSQL_DB_LOG_DIR=/var/lib/openshift/.../mysql//log/
OPENSHIFT_MYSQL_LD_LIBRARY_PATH_ELEMENT=/opt/rh/mysql55/root/usr/lib64
As explained in the title I am not looking for the port forwarding solution. (I need to make it work not only for me but all the users)
What am I missing?
Why can't databases be accessed externally?
What should I do?
Are there any other FREE paas out there which offer what I am looking for?
Do I need to get a medium or big gear in order for this to work?
Thanks
If you don't want to use port forwarding, then I would suggest you write an API that your .NET application can use to access the database. Otherwise you would want to look into an externally hosted database (DBaaS) solution.
OK, lots of googleing and I now know that using the free solution provided by OpenShift it is not possible to solve this issue.
You must upgrade to a paid version in order to get another port to access the sql database directly.
We have a Web Server in our company and create a MySQL Server on OpenShift.
We need to use Python to access the database server without rhc port forward,
Can we have others way to access MySQL on OpenShift directly?
thanks
You can access the gear directly just as you would any other Database not housed on OpenShift.
When you created the MySQL cartridge you should have been given a connection string:
mysql://OPENSHIFT_DB_GEAR_DNS:OPENSHIFT_DB_PORT/...
You can use that provided connection string and authentication to access the application.
Note: These strings above are environment variables on the gear, and will typicaly translate to something like:
mysql://app-namespace.rhcloud.com:55582/
This can be used from outside of the gear by other applications to access the database that is hosted on OpenShift.
Note: The OpenShift forums have lots covering this topic.
I'm pretty new to Python but have been running a few programs locally using Komodo edit, and then uploading the results manually to my website's MySQL database.
I'm looking into letting Python do this on it's own, but as i understand it i have to open my MySQL database to anyone regardless of if they are running scripts on my server or not if I'm to do this.
I'm guessing this is due to with security reasons, but i don't know how vulnerable this can make my site? Is it a bad idea to do it this way, or would it be better to run my python program from the server itself? (I've never run python code from my server, and my python code too, might be insecure)
If you have a access to the entire server (i.e. not just the hosting directory as is common on some shared hosting setups), and can ssh into the server, then your safest (though not easiest) option is to place the script on the server outside of the web hosting folder. This will stop anyone from remotely accessing the script, and will let you connect to the db without enabling remote connections.
You could enable remote connections if your hosting server set up allows it (not sure if any hosting companies disable, or prevent it, though you may have to enable it from the start when you create the database) Just select a nice strong password. Then you can use your script locally, and you'd be as secure as your password.