Add container with pre-stop hook script.#5
Merged
Conversation
This adds a container image derived from the Debian coturn image which includes a pre-stop hook script. This hook script polls the Prometheus metrics endpoint and waits until the number of active allocations reaches zero. This can be used to detect when traffic is drained from a running coturn instance, in order to perform a non-invasive graceful restart.
supersven
requested changes
Jun 7, 2022
13 tasks
set -o pipefail is a bashism, but one which is useful to have.
sysvinit
pushed a commit
that referenced
this pull request
Nov 8, 2022
```
==6418==WARNING: MemorySanitizer: use-of-uninitialized-value
#0 0x4e7530 in bcmp /src/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:906:10
#1 0x55463d in stun_check_message_integrity_by_key_str coturn/src/client/ns_turn_msg.c:1989:5
#2 0x554acc in stun_check_message_integrity_str coturn/src/client/ns_turn_msg.c:2008:9
#3 0x5358c0 in LLVMFuzzerTestOneInput coturn/fuzz/FuzzStun.c:37:5
#4 0x43ede3 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:611:15
#5 0x42a542 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:324:6
#6 0x42fdec in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:860:9
#7 0x459322 in main /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerMain.cpp:20:10
#8 0x7f4cb21790b2 in __libc_start_main /build/glibc-eX1tMB/glibc-2.31/csu/libc-start.c:308:16
#9 0x42070d in _start
Uninitialized value was created by an allocation of 'new_hmac' in the stack frame of function 'stun_check_message_integrity_by_key_str'
#0 0x5538c0 in stun_check_message_integrity_by_key_str coturn/src/client/ns_turn_msg.c:1927
```
sysvinit
added a commit
that referenced
this pull request
Nov 8, 2022
* Add docker image which includes pre-stop hook script. This adds a container image derived from the Debian coturn image which includes a pre-stop hook script. This hook script polls the Prometheus metrics endpoint and waits until the number of active allocations reaches zero. This can be used to detect when traffic is drained from a running coturn instance, in order to perform a non-invasive graceful restart. * Change shebang to bash. * Add status reporting to pre-stop hook script. * Add some explanatory commentary to the wireapp Dockerfile.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
We need to be able to detect traffic drain conditions when performing graceful restarts of coturn. This change adds a container image definition which derives from another Debian-based coturn image, and adds a script to the image which polls the metrics endpoint until the number of active allocations reaches zero.
Edit: I've tested this image, and it does seem to work correctly as a replacement for existing usages of our coturn image.