server-setup | new Ubuntu 14.04 instances | Continuous Deployment library

I am looking for a lightweight webserver-setup acting as an REST-API cache for multiple external databases.

Fixed requirements for the project: use Python3 on CentOS7

Guideline: Create a lightweight webserver, which needs to be robust and fast

Use-case scenario: During service-start I need to cache data from 10 external database-servers in RAM. Each server has 5 tables with ca. 100k rows each. So in sum I need to merge the data into 5 tables with ca. 1 mio. entries. Every 10 mins I need to query the servers again to identify new/removed rows and update the cache. The webserver will receive requests to lookup a single entry from the cache, filtered by table and a given search-condition (like "field_1" ="value_X").

Expected web-load: avg. 1 request/sec., (rare) peak-load ca. 100 requests/sec.

Now my question to the above scenario:

1. I can get the data form the DB-servers as json, xml or csv. Which format is the recommended one for the use case (fast "inserts" into a table with 1 mio rows)?
2. How shoud I store the data in the memory? pandas dataframes?
3. In sum, what is the recommended framework for all this? pandas, gunicorn, supervisor & nginx?

Many thanks for any input.

I have the following Varnish configuration:

I have a MERN app with Redux deployed on a Digital Ocean, Ubuntu 18.04 Droplet that should be fully deployed but it only works in my Chrome browser. I think it might only be working because the Chrome browser has a Redux extension, but I don't know.

I have successfully deployed a React app with a back-end similar to this one on a Digital Ocean Droplet but it didn't have MongoDB or Redux. I installed MongoDB and Redux should be installed just fine with everything else, so I don't know what the issue is. Mongo and Redux work just fine when the site is open in the Chrome browser. I bring it up because maybe if you know of a tweak needed when you add Mongo and Redux to an app on a droplet you can just share that info so you don't have to sift through all the data below.

When I visit the site on my iPhone it doesn't display anything.
If I visit the site in Firefox the the favicon for the site loads but the screen is blank. In the console of Firefox I see the error... Uncaught TypeError: t is undefined. I don't know where this error is from. I never see it on Chrome when I visit the site.

I don't know if I need to do something different to deploy the app for "production". Maybe this has something to do with the problem.

Maybe the error is something to do with Nginx configuration. This is my Nginx default file...

I spun up a Ubuntu 16.04 VM on Google Cloud Platform and tried following steps one to three on setting the VM up.

Instead of ssh root@your_server_ip (step one), I just went to the console, clicked on the drop-down under the Connect column in "VM instances" and selected "Open in browser window". Then I followed steps two and three to create a new user and to give it root privileges.

Skipping the 'recommended' steps 4 and 5, I tried step 6 to do a test log in by activating the Cloud Shell. But ssh [user created in step 2]@your_server_ip, where your_server_ip is the "External IP" in the "VM instances" page results in "Permission denied (publickey)."

Why is this?

I want configure elasticsearch(ES) with Drupal to integrate ES in Drupal following this tutorial
In order to install ES followed steps mentioned on this link

Description

• I have built my Django3, gunicorn, nginx, Ubuntu 18.04, Digital Ocean project based on this guide. I only had 1 problem that it does not shows the CSS and all other static files like images. Before during the whole guide nginx have given the correct answers as the guide says and also currently the html site still online and running
• To solve this I was in the process of using this another guide to make my static files displayed on my site. I have done all the steps what the creator recommended but at the

What I have tried

• After each step of the following [1.2.3...] commands I have executed the following commands to refresh:

  • python3 manage.py collectstatic
  • sudo nginx -t && sudo systemctl restart nginx
  • sudo systemctl restart gunicorn

• 1.RUN: sudo ln -s /etc/nginx/sites-available/ch-project /etc/nginx/sites-enabled

• 1.RESULT: ln: failed to create symbolic link '/etc/nginx/sites-enabled/ch-project': File exists

• 2.RUN: /etc/nginx/sites-enabled/my-project

• 2.RESULT: -bash: /etc/nginx/sites-enabled/my-project: Permission denied

• 3.RUN: systemctl status nginx.service

• 3.RESULT:

When I use curl --head to test my website, it returns the server information.

I followed this tutorial to hide the nginx server header. But when I run the command yum install nginx-module-security-headers , it returns yum: not found.

I also tried apk add nginx-module-security-headers, and it shows that the package is missing.

I have used nginx:1.17.6-alpine as my base docker image. Does anyone know how to hide the server from header under this Alpine?

Will keep this short. We have been tasked with following this tutorial in my class: https://webdev.jhuep.com/~jcs/ejava-javaee/coursedocs/content/html_single/ejb-basic-lab-book.html#ejb-basicex-modules-server-setup

The tutorial is very fast at times, and confusing. My issue is that I've come to 2.3, and I have just made my testmodule, and I am at the point where my server is up and I am doing a MVN clean install.

I get this error message:

I am trying to use bokeh on a digitalocean droplet, which runs ubuntu 18.04 with LAMP stack and reverse-proxy nginx (set up as described in these tutorials Initial server setup, LAMP setup, nginx as reverse-proxy ).

I used these tutorials (1 and 2) for setting up the bokeh part.

It looks like that it almost works but I get some error messages in the Browser console, of which I do not know how to resolve them.

This is the output in the browser console: