Questions & Help>Questions

How to tell if an elixir app is running from outside of the system?

#how-to-question
BitGonzo

BitGonzo

How to tell if an elixir app is running from outside of the system?

I’m in the process of deploying an Elixir app to a kube cluster. For those who haven’t played with kube, it has the concept of a liveness and readiness probe which it uses to monitor service state and start/restart/backoff as necessary.

This is easy to setup for a Phoenix app because I access routes over HTTP, but the app I’m now deploying is a simple worker with a simple supervisor, no server, etc,.

I’ve looked at pid_file hex package which seems to be the way to go, but just wondering if anyone has experience with this and if it is reliable, or if there other suggestions for how I might go about this?

Found here:

3 comments
#how-to-question
3 1353 3

Marked As Solved

idi527

idi527

How can I crash the beam? I think I need to find out.

If the top supervisor stops (the application stops), the vm should stop as well, I think.

If there are several applications in a release, I don’t quite remember.

1
Post #4

Also Liked

idi527

idi527

Shouldn’t it be automatic if you use releases with docker? The app dies, the docker container stops, the pod is restarted, etc.

1
Post #2
BitGonzo

BitGonzo

Confirmed. If Erlang crashes it brings the container down which will then adhere to its restart policy. Couldn’t bring down the main process (pid 1) from within container, but did manage to kill erl_child_setup. Cheers :+1:

1
Post #3

Where Next?

View thread on forum (has 3 responses!)
how-to-question
Home Questions & Help>Questions
#how-to-question
3 1356 3
Last post

Popular in Questions Top

Patoshizzle
Questions & Help>Questions

(Postgrex.Error) FATAL 28P01 (invalid_password) password authentication failed for user “postgres”
After calling mix ecto.create I get this error: 17:00:32.162 [error] GenServer #PID<0.412.0> terminating ** (Postgrex.Error) FATAL...
#ecto#postgres#troubleshooting
10 28696 20
New
albydarned
Questions & Help>Questions

Erlang and Elixir on Apple Silicon/M1 Chip
Hello all! I am typing this post from my new MacBook Pro with the M1 chip. I’m loving it so far, and will probably use it as my daily dr...
#erlang#troubleshooting
121 24599 65
New
itssasanka
Questions & Help>Questions

Why use `utc_datetime` over `naive_datetime` for Ecto?
Hi all, Trying to get some more clarity over utc_datetime and naive_datetime for Ecto: https://hexdocs.pm/ecto/Ecto.Schema.html#module-...
#ecto#timestamps#datetime#timezones
115 14814 19
New
pgiesin
Questions & Help>Questions

Ecto :database Not Found
This should be a simple problem but I just can’t seem to figure it out. I have a standalone Elixir app that won’t find the database. Dep...
#ecto#postgres#troubleshooting#ecto-migration
7 14214 22
New
_russellb
Questions & Help>Questions

Web scraping tools
I want to try my hand at web scraping. What tools/libraries do I need to use. I’m hoping to turn this into something professional so don’...
#web-scraping
123 19127 45
New
dokuzbir
Questions & Help>Questions

How to convert list to string without losing brackets
Hello, I am trying to convert my lists to string without losing brackets.For start i have 3 map. They look like these buyer = %{ id: ...
26 14426 10
New
ovidiubadita
Questions & Help>Questions

Elixir for game development
Hey all, I discovered Elixir and I love it. I always wanted to learn a functional programming and I intended to go for Haskell, but afte...
#game
30 23202 25
New
kostonstyle
Questions & Help>Questions

Create time with one hour plus
Hi all I want to have a unix time, from the current time plus 1 hour. DateTime.now + 1 hour How to get it in elixir? Thanks
#time
33 13478 5
New
jc00ke
Questions & Help>Questions

Typespec for map w/both required and optional keys
Expanding on this topic: https://forum.elixirforum.net/t/map-typespec-question/19217 Let’s say I have a map with required and optional k...
#typespecs
27 13396 13
New
idi527
Questions & Help>Questions

How I would create a multiline string without a trailing line break with Elixir?
I’ve been re-reading swift book again and noticed that multiline strings there don’t have a trailing line break, unlike in elixir iex(2)...
#strings
33 13891 10
New

Other popular topics Top

TunkShif
Chat & Discussions>Wikis

Neovim - Elixir Setup Configuration from Scratch Guide
This post is an instruction guide to help you setup your Neovim for Elixir development from scratch. It includes general information on h...
#wiki#code-editors#neovim#language-server-protocol
273 38985 115
New
minhajuddin
Questions & Help>Questions

Using List.first instead of Enum.at(0)
I have seen a lot of code which picks the first element from a list using Enum.at(0) instead of List.first. Is there a reason why people ...
#code-style
76 33273 14
New
Harrisonl
Questions & Help>Questions

Deploying Elixir into ECS causing many "'global' at node :"xxxxx@10.0.X.X" requested disconnect from node :"xxxx@10.0.X.X" in order to prevent overlapping partitions"
We have an ECS cluster with 4 services, where each task joins a single cluster, via discovery ECS discovery service. Currently when I de...
#deployment
2 85219 3
New
peerreynders
Learning Resources>Chat/questions

Elixir Book & Learning Resources Sales / Discounts Thread
Manning 2016 Halloween weekend sale via Deal of the Day Friday, October 28 - Half off all MEAPs - code WM102816LT Saturday, October 29 ...
#discounts
326 29600 154
New
jononomo
Questions & Help>Questions

Where / How does the Mix environment variable get set?
I am trying to figure out how Mix knows whether the environment is test, dev, or prod -- where is this set? Thanks.
#mix
31 22791 9
New
romenigld
Questions & Help>Questions

Docker run Error loading shared library libstdc++.so.6 and libgcc_s.so.1
I am trying to run a deploy with docker and I successfully runned with this command: docker build -t romenigld/blog-prod . but when I t...
/phoenix#deployment#docker-compose
30 19932 15
New
Trevoke
Questions & Help>Questions

(EXIT) no process: the process is not alive or there's no process currently associated with the given name, possibly because its application isn't started
I have an umbrella app. Some of the apps inside depend on other apps in the umbrella, unsurprisingly. I'm writing a test for one of t...
#otp#umbrella#testing#exunit#errors
26 21431 11
New
vonH
Questions & Help>Questions

How do I kill a process ` #PID<0.186.0` in iex?
When I run the Plug and I recompile I wind up having to use Ctrl C to quit iex and start again. Witht the help of rlwrap I can use the cu...
#iex#processes#how-to-question
36 21149 8
New
baxterw3b
Questions & Help>Questions

Anonymous functions with multiple body
Hi guys, i’m new in the Elixir world, and i have to say, that i love it! i’m having some problem to understand anonymous functions with ...
19 21396 4
New
lucidguppy
Questions & Help>Questions

How do I read a file and enumerate its lines
I have a super simple question about elixir - how would I take a file like this foo bar baz and output a new file that enumerates th...
#how-to-question
20 15454 3
New
Back to top

Questions & Help>Questions

Questions Questions ❯

Latest on Elixir Forum

Elixir Forum ❯

Sponsor Spotlight

AppSignal

Catch errors, track performance, monitor hosts and more.

Our Sponsors

Dashbit

Build Elixir applications with speed and confidence.

EEF

Supporting innovation across the BEAM ecosystem.

Coders51

We build reliable cloud platforms for business-critical systems.

AppSignal

Catch errors, track performance, monitor hosts and more.

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

WyewWorks

Enabling companies to succeed by building software people love.

Potions

The deployment platform built for Elixir: PaaS ease, VPS control.

Pragmatic Studio

Courses that'll move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

Categories:

Sub Categories:

Forums

Our Sponsors

Dashbit

Build Elixir applications with speed and confidence.

EEF

Supporting innovation across the BEAM ecosystem.

Coders51

We build reliable cloud platforms for business-critical systems.

AppSignal

Catch errors, track performance, monitor hosts and more.

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

WyewWorks

Enabling companies to succeed by building software people love.

Potions

The deployment platform built for Elixir: PaaS ease, VPS control.

Pragmatic Studio

Courses that'll move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

We're in Beta

About us Mission Statement