🔸دیجی کالا و بامیلو دیشب که شبیه نمونه های خارجی تخفیف های بزرگ ارایه می دادند، هر دو از دسترس خارج شدند!
@Derangnews

When you don't have an idea about the load and expecting a 502 BAD Gateway. It means nothing but lack of scaling capablities or maybe lack of knowledge! After years of experience between Digikala crews, this is how they handle load of traffic if we not mention Bamilo!

Having a spare server or two, would difinitely help in balancing load in peak. Not having a good deployment strategy to distribute load to newly added healthy nodes would eventually make such a bad user experience.

Digikala! If I were you, I would place automatic scaling (or 1 single click deployment) to prevent such a results. (besides using load balancers that you guys difintely use).

#digikala #bamilo #502 #bad_gateway #scaling #ux

Remove all unused docker data including volumes, images, network, etc in one command:

docker system prune [OPTIONS]

To remove all unused data:

docker system prune -a

The command will give a warning and then deletes all unused data from docker.

WARNING! This will remove:
     - all stopped containers
     - all volumes not used by at least one container
     - all networks not used by at least one container
     - all images without at least one container associated to them
 Are you sure you want to continue? [y/N] y

#docker #prune #system #docker_system #dangling

#pandas #ebook #epub

https://github.com/hersonls/djamin/

New and different look for django admin interface

#django #dashboard #admin #theme #template #ui #github #djamin

شرکت اینتل اعلام کرده است که پردازندههای این شرکت دارای نقصی امنیتی هستند و حتی در حالت خاموش بودن سیستم، امکان کنترل کامل رایانه یا سرور را به نفوذگران می‌دهند.
@Netixa

Naming conventions and recipes related to packaging

Private (including closed-source) projects use a namespace

For internal/customer projects, use your company name as the namespace.

This rule applies to closed-source projectsi (local PyPi server).

As an example, if you are creating a "climbing" project for the "Python Sport" company: use "pythonsport.climbing" name, even if it is closed source.

NOTE: The above descriptions are derived from python PEP-423.

#python #package #packaging #pypi #pep423 #conflict

A responsive bootstrap admin for django dashboard:

https://github.com/django-admin-bootstrap/django-admin-bootstrap

#python #django #theme #template #bootstrap #django_admin_bootstrap #github

In icinga2 monitoring tools, you may have used check disk space command check_snmp_storage. In its default behaviour it lists all
the partitions which is present on disk either mounted by NFS or /run, etc.

In Incinga2 you would have a command called snmp-storage in /etc/icinga2/conf.d/commands. To exclude unnecessary partitions from all disks you can pass -e (e stands for exclude) argument to the perl command. You can use -m to pass regex to say which partitions you want to use.

e, --exclude:
Select all storages except the one(s) selected by -m
No action on storage type selection.

The final config for snmp-storage to exclude a list is like below:

object CheckCommand "snmp-storage" {
         import "snmp-manubulon-command"

         command = [ ManubulonPluginDir + "/check_snmp_storage.pl" ]

         arguments += {
                 "-m" = "$snmp_storage_name$"
                 "-f" = {
                         set_if = "$snmp_perf$"
                 }
                 "-w" = 80
                 "-c" = 90
                 "-H" = "$address$"
                 "-m" = "^Cached|^Shared|^Swap|^/run|^Physical|^Memory|^Virtual|^/dev|^/sys"
                 "-e" = ""
         }

        vars.snmp_perf = true
 }

In brief the combination of -m & -e means: select all partitions except the ones listed in front of -m.

#icinga2 #monitoring #snmp #snmp_storage #exlude #exclude_partition

Let's run a MySQL instance on our local machine using docker. You don't need to install any version of mysql on your system. You won't get into trouble of upgrading the mysql or even in the trouble of removing it.

When you stop the container Mysql will be stopped. If you remove the image it will be gone forever :)

To run an instance of mySQL on your system (server or desktop), just use the below command:

docker run -p 3306:3306 --name some-mysql -e MYSQL_ROOT_PASSWORD=my-secret-pw -d mysql:latest

NOTE: we assume that docker is installed on your system.

-p 3306:3306 will bind the container port into a port in host machine. We run it on 3306, if you have to change it you need to change the first port number to a port in your host like 3350:3306.

--name gives a name to you container, so you can easily work with the name provided.

-e will set an environment variable. Here we have set a password for our mysql root user.

-d makes the container to be run in DAEMON mode (in background).

mysql:latest this is the image name that you will pull from docker hub registry.

Voila! You are up & running we a totally working mysql server.

Let's check with netstat (on your HOST) whether it's up or not:

root@infra:~# netstat -nltp | grep 3306
 tcp6       0      0 :::3306                 :::*                    LISTEN      11572/docker-proxy

#docker #mysql #netstat #image #container

How to check whether name servers (NS) are propagated in Domain Name Server (DNS)?

Occasionally sysadmins/devops migrate their server to a new server with a new IP address due to server lag/ data loss, you name it. Here our domain name will point to the old IP address. It sometimes take a couple of days to fully get propagated.

There are some network tools like nslookup`/`dig that can help in checking DNS propagation. Let's say your name server (NS) is ns1. example.com:

nslookup - ns1-5-61-24-199.parsdev.net

At prompt type your domain and hit enter:

nillkin24.ir

If it resolves to what you expected then it works. It should give you something like:

Server:     ns1-5-61-24-199.parsdev.net
 Address:    5.61.24.199#53

NOTE: it may still take a while to propagate to the rest of the internet, that's out of your control.

Using dig:

dig @ns1-5-61-24-199.parsdev.net nillkin24.ir

It prints lots of information, you should see ANSWER SECTION with a result like below:

;; ANSWER SECTION:
 nillkin24.ir.       14400   IN  A   5.61.24.199

If you see the correct IP address, it means that it has properly cached by remote name servers.

#sysadmin #nslookup #dig #ns #dns #name_server

Analytics services for django projects:

https://github.com/jcassee/django-analytical

#django #analytics #django_analytical #github

You can integrate Django with Bootstrap4 now. First install it using pip:

pip install django-bootstrap4

Add to INSTALLED_APPS in your settings.py:

'bootstrap4',

In your templates, load the bootstrap4 library and use the bootstrap_* tags:

{% load bootstrap4 %}

 {# Display a form #}

 <form action="/url/to/submit/" method="post" class="form">
     {% csrf_token %}
     {% bootstrap_form form %}
     {% buttons %}
         <button type="submit" class="btn btn-primary">Submit</button>
     {% endbuttons %}
 </form>

* Reference: http://django-bootstrap4.readthedocs.io/en/latest/

#python #django #bootstrap #bootstrap4 #template django_bootstrap4

#fun #programmer_jokes

🔵 حریم نه چندان خصوصی؛ چرا باید وبکم لپ تاپ را بپوشانیم؟
#امنیت #آموزش
👇
http://dgto.ir/rl7

📱 @Digiato 📡

Axigen 10.1.5 Release Update

We are happy to announce the release of a new minor version, Axigen 10.1.5.
This version comes with number of small features, enhancements, performance improvements, and bug fixes, as well as support for openSUSE Leap 42.2 and 42.3.
For a detailed list of what's included in 10.1.5, please consult the list below.

More info: https://www.axigen.com/press/product-releases/axigen-1015-release-update_94.html

#mail #server #mail_server #axigen #update

Mixed Active Content is now blocked by default in Firefox 23!

What is Mixed Content?
When a user visits a page served over HTTP, their connection is open for eavesdropping and man-in-the-middle (MITM) attacks. When a user visits a page served over HTTPS, their connection with the web server is authenticated and encrypted with SSL and hence safeguarded from eavesdroppers and MITM attacks.

However, if an HTTPS page includes HTTP content, the HTTP portion can be read or modified by attackers, even though the main page is served over HTTPS. When an HTTPS page has HTTP content, we call that content “mixed”. The webpage that the user is visiting is only partially encrypted, since some of the content is retrieved unencrypted over HTTP. The Mixed Content Blocker blocks certain HTTP requests on HTTPS pages.

#http #https #mixed_active_content #firefox

Kafka® is used for building real-time data pipelines and streaming apps. It is horizontally scalable, fault-tolerant, wicked fast, and runs in production in thousands of companies.

#kafka

Django admin easy template:
https://github.com/ebertti/django-admin-easy

#python #django #template #admin_easy