networking – Unable to connect to public postgresql rds instance: Connection timed out

I have created a basic test PostgreSQL RDS instance in a VPC. It is a public security group and a VPC security group. The security group whose configuration is as follows:
Input rule:
Type: PostgreSQL
Protocol: TCP
Port: 5432
Type: All
Protocol: All
Harbor: All

When I try to connect, it fails. Here is the error code I get:
Unable to connect to server: Connection timed out
The server is running on host () and accepted
TCP / IP connections to port 5432?

I am doing this for the first time, so please help me. Every help is appreciated.

amazon ec2 – Always timed out when deploying the API "React App + Rails" on ec2

Rails: 5.2.3
Ruby: 2.6.3p62
Node: v4.6.0

Hello, So I'm trying to implement new Rails API + apps.
Most of the time I've followed the tutorial here (except for the part with the Bitbucket pipelines).

Everything was fine until I added a post-deployment script to run the rake task to create the front end.

.extensions / post_deploy.config

Mode: "000744"
Owner: root
Group: root
Content: |
#! / usr / bin / env bash
set -xe

EB_SCRIPT_DIR = $ (/ opt / elasticbeanstalk / bin / get-config container -k script_directory)
EB_SUPPORT_DIR = $ (/ opt / elasticbeanstalk / bin / get-config container -k support_dir)
EB_DEPLOY_DIR = $ (/ opt / elasticbeanstalk / bin / get-config container -k app_deploy_dir)

, $ EB_SUPPORT_DIR / envvars

su -c "Bundle Exec Rake Start: Production"

especially the last line.

that's what my rake Task looks like this:

        Task: do production
exec # NPM_CONFIG_PRODUCTION = true npm run clientbuild & # 39;
The End

where mine package.json Script is:

"Scripts": {
"build": "cd frontend && npm install && npm run build && cd ..",
"deploy": "cp -a frontend / build /. public /",
"clientbuild": "npm run build & npm run deploy & echo" client
built & # 39; "

and frontend / package.json Script is:

"Scripts": {
"start": "PORT = start 3000 reaction scripts",
"build": "Build React scripts",
"test": "React-Scripts-Test --env = jsdom",
"Eject": "React Scripts Eject"

After a long debugging I realized that the problem exists npm install Command on ec2 instance. I run manually su -c "Bundle Exec Rake Start: Production" on ssh, to find out). It just takes too long and is never finished.

What can I do to make this deployment a success? What do I have to do to fix bugs and find out more? I am really lost here.

form – workflow "paused" after a timed loop has been created in a workflow

Recently discovered "timed" loops in workflows that allow me to loop based on a selected variable (eg, 3 weeks, so repeat 3 times). However, the workflow appears as "suspended" under the workflow status page with the following error:

RequestorId: eb0e8b41-7248-3ce0-0000-000000000000. Details: An unhandled exception occurred during the execution of the workflow instance. Exception Details: System.InvalidCastException: The value & # 39; Value & # 39; can not be defined as type & # 39; Int32 & # 39; to be read. at Microsoft.Activities.GetDynamicValueProperty1.CheckedRead (String propertyName, DynamicItem value) in Microsoft.Activities.GetDynamicValueProperty1.Execute (CodeActivityContext Context) at System.Activities.CodeActivity`1.InternalExecute (ActivityInstance instance, ActivityExecutor-Executor, BookmarkManager BookmarkManager) at System.Activities.Runtime.ActivityExecutor.ExecuteActivityWorkItem.ExecuteBody (ActivityManager-Location) from the Activity GetDynamicValueProperty Cast BuildDictionary Subroutine Sequence Microsoft.SharePoint.WorkflowServices.Activities.LoopNTimes Then If Stage 1 Sequence Flowchart Sequence Duplicate 1.WorkflowXaml_8c4eecce_76a5_40a3_98a8_a5d2b9ac5d4c

I can not seem to wrap my head around the mistake and hope that someone can steer me in the right direction.

Here's my workflow: I'll check if the user is using the correct content type form and continue with the loop. Here the loop runs based on what the user typed.

Enter image description here

Any ideas, what should I look for?

Astrophotography – How exactly timed DSLR shot?

I would like to know the exact UTC time for the moment the trigger is pressed. A millisecond accuracy would be ideal, but anything better than 1 second is acceptable.

The details of the photo properties are not accurate enough. The reported time is at best in UTC minutes.

Is there a delay between clicking the shutter button and opening the shutter button? Yes obviously, but how much? and does it depend on the shutter speed and something else?

I launch satellite passes in the night sky, with the ultimate goal of orbit determination. Precision is very important! | 522: Connection timed out

What happened?

The initial connection between the Cloudflare network and the originating web server has expired. Therefore, the web page can not be displayed.

What can I do?

If you are a visitor to this website:

Please try again in a few minutes.

If you are the owner of this website:

Contact your hosting provider to let them know that your web server does not meet any requirements. An error 522 means that the request was able to connect to your web server, but the request was not completed. The most likely cause is that something on your server is depleting resources. More troubleshooting information here.

Timed tasks

I'm something of an expert on programming, etc., and I've been hiring programmers to make sites historical for me. My current program … | Read the rest of

Trace Route – request timed out


I'm not familiar with CMD, Ping and Tracert.

This is only the case for certain websites. I can access the website, but I always get error_time_out from Chrome.
I need to brush chrome 2-3 times to get there.

With the Tracert I get this result below. Can someone tell me what these results mean?


  1 <1 ms <1 ms <1 ms
2 * * * Request timed out.
3 * * * Request timed out.
4 * * * Request timed out.
5 * * * Request timed out.
6 * * * Request timed out.
7 * * * Request timed out.
8 * * * Request timed out.
9 * * * Request timed out.
10 * * * Request timed out.
11 * * * Request timed out.
12 * * * Request timed out.
13 * * * Request timed out.
14 * * * Request timed out.
15 * * * Request timed out.
16 * * * Request timed out.
17 * * * Request timed out.
18 * * * Request timed out.
19 * * * Request timed out.
20 * * * Request timed out.
21 * * * Request timed out.
22 * * * Request timed out.
23 * * * Request timed out.
24 * * * Request timed out.
25 * * * Request timed out.
26 * * * Request timed out.
27 * * * Request timed out.
28 * * * Request timed out.
29 * * * Request timed out.
30 * * * Request timed out.

Trace completely.

Thanks for any help

Approach to timed events in a frame-like library – a matter of life (cycle) and death

I am working on an auxiliary library that should send data to a server at a certain interval, eg. 1 minute.

The idea is that the user of this library does not have to deal with inserting the event handlers, disposing, etc. Regardless of which app it uses, the help library should look after the app data, search for files, and post a server once a minute.

The library should send telemetry data to the server. A developer in the code states when to send some of the data – but I do not want to send it in this instance. Instead, I want to stack the requests and send them in an interval. Therefore, the data is first stored locally and sent to the server later.

I was thinking about using System.Timers.Timer for the job, but …
If the parent app quits or crashes, the timer is still there, triggering it On_Elapsed Event.

How would you implement this kind of functionality? Maybe something other than a timer?

The goals:

  • Null / minimal configuration for the developer using this framework
  • Send data stacked from time to time and not as soon as data is displayed
  • The application should specify an instance of a telemetry client class. However, more than one instance or more than one instance may be specified. I do not want dozens of timers running in the background.