Unexpected crash - Rust crashes after building with libgssapi-krb5 reference
Hey, first time posting an error - my Railway deployment is crashing with the following error:
error while loading shared libraries: libgssapi_krb5.so.2: cannot open shared object file: No such file or directory
The deployment for this code was working fine until I added the diesel dependency in my Cargo.toml. I first needed to add libpq-dev as an apt dependency (expected this one) to fix build errors, and then I got it to build and deploy, and ran into the crash error mentioned earlier.
Here is my Cargo.toml for the project:
[dependencies]
actix-web = "4"
actix-cors = "0.6.4"
actix = "0.13.0"
actix-web-actors = "4.2.0"
reqwest = { version = "0.11.14", features = ["json"] }
dotenv = "0.15.0"
serde_json = "1.0.94"
serde = { version = "1.0.155", features = ["derive"] }
diesel = { version = "2.0.4", features = [
"postgres",
"chrono",
"uuid",
"r2d2",
"serde_json",
] }
env_logger = "0.10.0"
rand = "0.8.4"
Here is my nixpacks.toml (need libpq-dev for Diesel's postgres feature):
[phases.setup]
aptPkgs = ["...", "libpq-dev"]
Thank you, any help would be appreciated!
270 Replies
Project ID:
ed084bf3-fd73-4163-a606-254021daaf02ed084bf3-fd73-4163-a606-254021daaf02
try adding
libgssapi-krb5-2 to your aptPkgs arrayoh thank you for the suggestion @Brody I will try that
ok heres what I have now
[phases.setup]
aptPkgs = ["...", "libpq-dev", "libgssapi-krb5-2"]
just pushed!
have you ever seen this error before? any idea where it comes from?
curious what I've done right on my local windows machine to make this work well
lol
also i just got the project redeployed and im getting the same error
i wonder if there is potentially a cache I need to clear or if the dependency is not the root of the problem?
i just removed the deployment and I am trying again
i have not seen it, error comes from a package not finding libgssapi_krb5.so.2
the issue is the final deployment is missing libgssapi_krb5.so.2
right which should come if I have that dependency
yeah keyword, should
hmmm
i was looking for a way to verify it is running the apt-get commands for the packages
it looks like in build logs it is saying layer already exists
your nixpacks.toml file is correct
ok
yeah the delete + redeploy gives the same problem
try that
yessir
of course it would
š¤
im super impressed with railway btw
you guys are amazing
i dont work for railway, but i still appreciate that
damn same problem
im tempted to stop using diesel and just write sql queries
ive had so many problems with this ORM
ive seen so many problems with rust just wanting random libs installed
it seems that way sometimes yeah
i did have to completely remove diesel trying to build an android app with tauri
rust runs into some problems, but with diesel its a whole other level
the only other solution i can think of would be move to a dockerfile, but im not confident in my ability to write a dockerfile for rust
i have one that was written by a tauri dev
i can probably modify it
would be good to get to know docker better anyways
i could maybe help? ive never done rust before
yeah lemme see what I have
i can paste longer files in here right?
you can send the file as a file?
like text
oh sure
still looking I think I already worked on removing android portions of the file
cus the dockerfile was originally set up to cross compile to android
ill just share the repo i found it on cus im not able find my modified file i think i figured i didnt need docker
GitHub
GitHub - simonhyll/devcontainer: Tauri + Android + Mold + Rust + No...
Tauri + Android + Mold + Rust + Node.js + Trunk + Wasm - GitHub - simonhyll/devcontainer: Tauri + Android + Mold + Rust + Node.js + Trunk + Wasm
im going to go through and delete all the android related stuff
yeah that does a whole lot of things you dont need to do
right right
dont need pnpm
dont need java/tauri/mold
do you know what the devcontainer.json file does?
doesnt look like i will need anything there
i do not, sorry
i trimmed it down a bit
its installing node?
ooh
right
this is just my server
LOL
thank you
it also is manually downloading rust, just use a rust image
ooh
would i include a link to some public image?
im sure rust has published an image on the docker hub
you are indeed correct
what version of rust do you have installed locally?
rustup 1.26.0 (5af9b9484 2023-04-05)
info: This is the version for the rustup toolchain manager, not the rustc compiler.
info: The currently active
rustc version is rustc 1.71.0 (8ede3aae2 2023-07-12)rust - Official Image | Docker Hub
Rust is a systems programming language focused on safety, speed, and concurrency.
then use this image
rust:1.71.0-slimso id say like FROM rust:1.71.0-slim
yep!
sorry is that it?
ive never added my own new like to a dockerfile š
just delete and change things in a line lol
well youd need to add the run the commands to build your rust app and then run it
ohh
so with docker
i go away from nixpacks
correct
and i wont get to use the command in the railway setup
i see thank you!
think of a dockerfile as a bunch of commands that you would run to download the dependencies, build the app, and run the app from scratch
of course you dont need to download rust because thats what that rust image has already done for you
yeah that makes sense
im not sure where my working directory would be
should i just run the container and get a feel for the environment?
nah
WORKDIR /appoh i see
app would be the name of my folder?
the workdir has nothing to do with your project folder, its just simply where files will be worked on and copied to when in the docker image
keep it
/appoh alright
theyre handling some of the for me
whos "theyre"
docker i guess
if its a monorepo and my server is in a folder called server relative to parent directory
i should do WORKDIR /app/server and then run the commands?
workdir has nothing to do with your project folders or structures, its just the folder withing the docker image that you will be working on files
you would have set your root directory as /server in railway already
oh wow
and this dockerfile would be in your /server folder in the repo
ok that is great
ok im just going to see what railways got
WORKDIR /app
RUN cargo run
should be good right? š¤£
well what does cargo run do
it runs my app
if youre in the server folder
then no that wont work
you need to build the app into a binary file
ok sorry it it builds and then runs it
still wont work
^
without running it
we do not want to run it during build
ok i havent built a binary before i think its pretty easy though
youd know the command to do that better than me
i know how to write dockerfiles, but i cant if i dont know the commands to build a rust bin
i have a .exe from cargo build
bin...
hmm
yeah thats fine, in the image youd get a bin since its linux
oh great
make sure
*.exe is in your gitignore fileyeah
it creates a target folder with a ton of stuff in it
including the .exe, which is gitignored
does
cargo build also install the crates?yes
keep that target folder in your .gitignore too
that target folder is platform dependent, and we dont put platform dependent stuff in the repo
ok thats all set
send dockerfile
sure
you still got a crap ton of stuff fron node and tauri?
oh you mean the apt stuff?
i am paranoid i dont have enough dependencies LOL
i know it doesnt work like that
also, please dont be pushing every little change you make on the dockerfile to railway, ill let you know when i think the dockerfile has a chance of running
i think you need a few of those for rust
ok i have been keeping it local for now
give me the path to the exe when you run cargo build --release
one sec i gotta run it locally with release flag
nearly there
damn rust takes that long to build??
it does lol
yikes
especially release builds
bruh go takes 15 seconds tops.. uncached
when its cached and there are only small changes it is quick
but i havent run release build
LOL
i was considering learning go, but i just like the orange highlighted type annotations in my IDE
you know how it is
target/release/battle-plains-server.exe
type annotations?
i could have assumed it would be that
lol
what ide?
vscode
it only happens when i use rust
is that an extension?
ive edited rust with vscode and it didnt do that lol
i think its the rust-analyzer extension haha
i had that installed at the time
oh interesting
getting off track though
use this
should I still keep any of the other stuff or is that literally all I need?
your dockerfile had too much stuff, if we need apt packages, we can add that back later
all you need for now
wow
you can now push that to railway
yeah you can see what i meant by "ton of crap" lol
COPY . ./
does that get the code from github or something?
yeah how else are you gonna get your code into the image
ah yes it wants apt packages
well railway will pull your repo into a temp folder, so COPY just copys the code from the same directory as the dockerfile
do tell
screenshot
libssl-dev, pkg-config
screenshot better
pictures are worth 1000 words
itd be a few screenshots
would you want text?
holy shit
what
what?
thats so cool
i made that š
damn dude
they need to hire you what are they doing
railway wouldn't do it, so i had to
im not qualified
š¤£
maybe soon
its beautiful
ryuko_bot_discord?
or the exe haha
would be even nicer looking if we used an alpine image
linux bins dont have an extension lol
alpine?
dont worry about alpine
out of the scope lol
i am worried about alpine
but later
I changed it to ENTRYPOINT ["/app/target/release/battle-plains-server"]
i assumed ryuko_bot_discord was something else
fine, the image you are currently using is based on debian, the rust image with alpine in the name is based on alpine, just a different linux distro
oh i see
you are too helpful
omfg
i have two dockerfiles open and i sent you the wrong one
hilarious the only thing i thought was messed up was the entrypoint
thats the only thing that was different lol
and the copy line
COPY . .
true
it was COPY . ./
but maybe thats ok
same thing, its just semantics
im going to laugh very hard if we end up having the same list of apt dependencies
as the original lol
its possibly
well its also good to go incrementally to be lean
getting fancy!
alpine
it seems to be running much longer than the other tries
awesome
the rust is building
pog
how long have you been writing software?
writing software is a stretch
I just play around
haha
you are getting deep into rusts scary side
heres that msg + another look at a similar error msg
ive seen that before
use the bookmarklet please
oh ok
looks like min we need libpq-dev
yeah but that's an apt package
apt isn't applicable with alpine
ohh
alpine uses apk (not to be confused with android .apk files)
cool
though we will probably need that, the error we see isn't caused by not having that
yeah curious what you think about that
ive seen the linking with cc before
I'm in the process of thinking, but what have you done in the past to fix it
it mentions -lpq on the second note (after linking with 'cc' failed)
so i looked that up and thats where people mention postgres
i think thats where i added libpq-dev
let's try it, I have a backup plan if that doesn't change anything
legend
i wonder if we can look at what nixpacks is doing for rust
something cringe probably
cringepacks
real
not a fan of nix
dudeee the image is publishing
poggers
build worked!
yesss
i think its gonna work
i think it was a nixpacks problem
it's fine until you ask it to install an apt package that would normally fix the build in a dockerfile
there's 100% a way to get it working with nixpacks, I just don't know that way
yeah i want to share a stackoverflow post i wonder if it highlights the problem somehow
a stackoverflow post for what?
regarding the error i had on nixpacks build
that's what your here for right now, stackoverflow can't help lol
omg it deployed
now for your satisfaction this is what you got online
now does it work though, my money's on you forgot some environment variable
haha awesome
even got a custom domain
but yuck www
ohhh
yeah i havent done the domain right
what's your provider
google domains
š
lol
oof
well i think they got bought
Google domains doesn't support root level cnames
or whoever bought them out doesn't either
you can just use cloudflare's nameservers, no need to do a domain transfer
im down to check that out for sure
oh wait shit it crashed
it's simple, run through the setup process in cloudflare and they will transfer everything over
odd it doesnt say much in the deploy logs
sadge
why does it say compiling?
i wonder if my cargo run in the railway setup
is conflicting
yes it is
remove please
son of a
so no start command
correct
everything else should be good
and now i can just hit redeploy
for you, the ENTRYPOINT is like a start command
yeah i saw the compiling
and was like o shit
well
you did
good catch lol
also, dont log your database connection string
youll want to go and regen that
yeah i might want to remove that
free database
database anyone?
huahuahain the plugins settings
ok im good
on the db
im guessing that was it on the deployment as well
it was running
so has it crashed?
well
sometimes you forget to hit the save button
then you gotta run the rust build again
ill know in another couple minutes
lol
how many crates are you using
[dependencies]
actix-web = "4"
actix-cors = "0.6.4"
actix = "0.13.0"
actix-web-actors = "4.2.0"
reqwest = { version = "0.11.14", features = ["json"] }
dotenv = "0.15.0"
serde_json = "1.0.94"
serde = { version = "1.0.155", features = ["derive"] }
diesel = { version = "2.1.0", features = [
"postgres",
"chrono",
"uuid",
"r2d2",
"serde_json",
] }
env_logger = "0.10.0"
rand = "0.8.4"
isnt that wild
hey thats not even a lot
https://github.com/railwayapp/cli/blob/master/Cargo.toml
ah got another failed one
i didnt push code just updated the db string and removed cargo run
updated the db string?
well in my env
after i had to change it
oh no, you arent using variable references like you should be, are you?
LOL
they even say that....
yeah im not
they do
you should be
well thats very convenient isnt it
interesting the build fails 'failed to create task for container'
it sure it
"/apptarget/release/battle-plains-server"
that doesnt look rightoh snap
should be target
send the dockerfile back please
FROM rust:1.71.0-alpine3.18
RUN apk add libpq-dev openssl-dev musl-dev
WORKDIR /app
COPY . ./
RUN cargo build --release
ENTRYPOINT ["/apptarget/release/battle-plains-server"]
ok were deployed again!
it seems to be spamming like its running the app over and over again
like running my init logic
every 5 seconds or so
railway will restart if your app exits
or crashes
rust are you crashing quietly?
lol
dude you are a champion
im going to go to bed, this is a great point to be at
sounds good
thank you so much again
ā¤ļø ā¤ļø peace bro
btw it is crashing on my db connection for sure im not sure why but i have a place to debug which is almost def on my side
let me know how it goes when you pick this back up
Hey @Brody I ended up working more on it and got stuck, seems like the deployment is having trouble connecting to the DB
I tried it local with the same connection string and it worked
makes sense
go into the service settings and disable private networking
I think it's disabled already
Says 'enable private networking' in the UI
okay then let's see a screenshot of your service variables
here you go kind sir
okay, let's see the error message
It doesn't have an error msg per se
It crashes after it fails connecting
ya gotta log your errors
can't do much debugging without error logs
I am actually not sure how to log this error, I have tried and ended up settling with a msg after that says 'no error yet...' lol
I can spend some more time trying to get an error
yeah we need an error message to proceed
and an actual error message, not just "there was an error"
Yeah
let me know when you have an error message
idk if this helps but im using a connection pool to try and share the db connection around my app
let pool = Pool::builder()
.max_lifetime(Some(Duration::new(1800, 0)))
.connection_timeout(Duration::new(30, 0))
.max_size(15)
.build(manager)
.map_err(|err| {
println!("Error: {}", err);
Box::new(err) as Box<dyn Error>
});
println!("No error yet...");
im at work rn will have to wait til after to get the error msg worked on
and the map_err portion seems to do nothing on error lol
looks fine, the pool builder just creates the pool and doesnt connect to the database, so its understandable that its not causing the crash
sounds good, ill be around
hey @Brody for whenever you are online next I found this https://github.com/diesel-rs/diesel/discussions/2947
GitHub
Exit code 3 after adding Diesel r2d2 on Rocket Ā· diesel-rs diesel Ā·...
Hi all! I have an issue with the r2d2 module (I think). My rocket app is exiting with code 3, without any message or log on Windows 10. I found that this is occurred by the r2d2 module of the diese...
explains that the code exits without any message or log
then suggests a fix installing some dll
thats a solution for windows
yeah
i cant get it to spit any error msg
that's very likely your issue, you just need to find a solution for linux
and then its all about adding this process to the dockerfile somehow?
perslaps
perslaps ma naps
well cross that bridge when we get to it
diesel makes me sadge and cringe
same, but for rust
every rust help thread is a missing lib
if rust is so good why does it rely on so many c libs?
lol you do speak the truth
but!
i managed to get it to work I decided to try the non-alpine dockerfile
i added a couple more deps that it was asking for
heres the final file
FROM rust:1.71.0-slim
RUN apt-get update && apt-get install -y --no-install-recommends \
build-essential \
openssl \
libpq-dev \
libssl-dev \
pkg-config
WORKDIR /app
COPY . ./
RUN cargo build
ENTRYPOINT ["/app/target/debug/battle-plains-server"]
no --release?
WELL
oops caps
well its slower i think
i will probably update to --release after
i think --release just does some optimizations for runtime but its the same program basically
something like that yeah
now my game is multiplayer š
so tldr
worth trying go?
hahaha
YES!
ily brody
thanks so much
i would tip u if i could
absolute chad
haha thanks!