Simple health check on simple service doesn't work

[rzimmerdev]

Overview of the Issue

Can't seem to make a simple service health check work. I register it through Python's request lib, then make an endpoint available for health checks, but service checks show failing on UI.

Reproduction Steps

1. Start and register the service

payload = {
'Address': '127.0.0.1', 
'Check': {
    'DeregisterCriticalServiceAfter': '30s', 
    'HTTP': 'http://127.0.0.1:5000', 
    'Interval': '5s', 
    'Timeout': '5s'}, 
'ID': 'my-service', 
'Name': 'MyService', 
'Port': 5000, 
'Tags': ['greeter']
}

response = requests.put('http://127.0.0.1:8500/v1/agent/service/register', json=payload)

Testing the service manually:

>>> curl -i http://127.0.0.1:5000/health
HTTP/1.1 200 OK
date: Sun, 01 Dec 2024 04:45:37 GMT
server: uvicorn
content-length: 20
content-type: application/json

"Service is healthy"%  

>>> curl -i http://127.0.0.1:5000/
HTTP/1.1 200 OK
date: Sun, 01 Dec 2024 04:45:55 GMT
server: uvicorn
content-length: 15
content-type: application/json

"Hello, world!"%      

And in the UI:

also, after 30 seconds the service gets removed.

Consul info for both Client and Server

Client info

agent: check_monitors = 0 check_ttls = 0 checks = 0 services = 0 build: prerelease = revision = c3f767b version = 1.15.4 version_metadata = consul: acl = disabled bootstrap = false known_datacenters = 1 leader = true leader_addr = 127.0.0.1:8300 server = true raft: applied_index = 1145 commit_index = 1145 fsm_pending = 0 last_contact = 0 last_log_index = 1145 last_log_term = 2 last_snapshot_index = 0 last_snapshot_term = 0 latest_configuration = [{Suffrage:Voter ID:b28fa40e-ec1e-21d4-5cd7-dddbd20769b0 Address:127.0.0.1:8300}] latest_configuration_index = 0 num_peers = 0 protocol_version = 3 protocol_version_max = 3 protocol_version_min = 0 snapshot_version_max = 1 snapshot_version_min = 0 state = Leader term = 2 runtime: arch = amd64 cpu_count = 16 goroutines = 145 max_procs = 16 os = linux version = go1.20.4 serf_lan: coordinate_resets = 0 encrypted = false event_queue = 1 event_time = 2 failed = 0 health_score = 0 intent_queue = 0 left = 0 member_time = 1 members = 1 query_queue = 0 query_time = 1 serf_wan: coordinate_resets = 0 encrypted = false event_queue = 0 event_time = 1 failed = 0 health_score = 0 intent_queue = 0 left = 0 member_time = 1 members = 1 query_queue = 0 query_time = 1

Operating system and Environment details

Operating System:
Platform: linux - OpenSuse Tumbleweed
Arch: x64
Version: #1 SMP PREEMPT_DYNAMIC Wed Sep 25 07:09:20 UTC 2024 (b87e886)
Available memory (MB): 31961
Available CPU cores: 16

Log Fragments

Don't know how

[rzimmerdev]

Note: registering the payload check field to point to/health also doesn't work