### Nomad version
Tested on nomad versions 1.7.3, 1.8.0

### Operating system and Environment details
Linux XXX 6.1.0-18-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.76-1 (2024-02-01) x86_64 GNU/Linux
Docker version 26.0.0, build 2ae903e

### Issue

We have a deploymet using php-fpm with nginx but I am able to simulate the same results even with this example deployment. When I do an update of the deployment I can see a short downtime (2-10sec). I expect that nomad will start a new version, wait till the health checks pass and than append new deployment to services, but the broken deployment is available sooner. It is critical issue for us and we can't move to production stage before we solve it.

The strange is, that when I use deployment where is only one job in group, than the update works without downtime...
I am not able to share with you my php-fpm+nginx deployment because it uses aour private registry, but this example works the same way.

### Reproduction steps

I have small devel nomad cluster with 5 nodes (1 master, 4 nodes), using nomad service discovery and nginx ingress (simillar to this https://github.com/theztd/startup-infra-docker/blob/main/files/jobs/nginx-ingress/deploy.nomad)

1. Run deployment definition (from job definition part)
5. Run curl in loop like this
```bash
while true; do curl "https://hello.freelo.cz/v1/health/"; sleep 1; echo ""; done
```
6. Run updated version of deployment (update for example )
7. Try it at least 3 times and you will see inconsistency of downtime at least 2 times.

#### Expected Result

Do update without downtime.

#### Actual Result

Short but noticable down time during update

### Job file (if appropriate)

```hcl2
job "hello" {

group "servers" {
count = 2

network {
mode = "bridge"
port "www" {
to = 80
}

port "app" {
to = 8080
}
}

task "app" {
driver = "docker"

config {
image = "ghcr.io/theztd/troll:1.2.0"
force_pull = true

ports = ["app"]
}

service {
provider = "nomad"
port = "www"

check {
name = "${NOMAD_JOB_NAME} - alive"
type = "http"
path = "/v1/_healthz/"
interval = "10s"
timeout = "2s"
}

tags = [
"http=true",
"http.url=hello.freelo.cz"
]
}

env {
ADDRESS = ":8080"
WAIT = 100
}


}

# Tasks are individual units of work that are run by Nomad.
task "web" {
# This particular task starts a simple web server within a Docker container
driver = "docker"

config {
image = "nginx:latest"
ports = ["www"]

volumes = [
"data/:/usr/share/nginx/html",
"local/:/etc/nginx/conf.d/"
]
}

template {
data = <<-EOF

Hello, Nomad!

• Version: - 6 -


• Currently running on port: {{env "NOMAD_PORT_www"}}

EOF
destination = "data/index.html"
}

template {
data = <<-EOF
server {
listen 80 default;

# server_name _;

location / {
proxy_pass http://localhost:8080;
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
}
}
EOF
destination = "local/default.conf"
}

# Specify the maximum resources required to run the task
resources {
cpu = 50
memory = 64
}
}
}
}

```

### Nomad Server logs (if appropriate)

I capture event stream by this small code
```python
#!/usr/bin/env python3

import time, requests, json, os
from datetime import datetime
from pprint import pprint

def stream(domain, token):
with requests.get(domain, stream=True, headers={"X-Nomad-Token": token}) as res:
if res.status_code != 200:
print(f"Failed to connect: {res.status_code}")
return

print(f"{datetime.now().strftime('%H:%M.%S')}: Connected ({res.status_code})")

buffer = ""
for line in res.iter_lines():
if line:
buffer += line.decode('utf-8')
event_data = ""
try:
event_data = json.loads(buffer)
buffer = "" # Reset buffer after successful parsing

except json.JSONDecodeError as err:
print(err)
print("Unable to parse json input")
# Incomplete data, continue to buffer it
continue

try:
for ev in event_data.get("Events", []):
print("=================================")
#pprint(ev)
print("{} -> Topic:{} Type:{} Name:{} Job:{} ({})".format(
datetime.now().strftime("%H:%M.%S"), ev["Topic"], ev.get("Type", "undefined"), ev.get("Name", "undefined"), ev.get("JobID", "undefined"), str(ev["Payload"])[:300]))

except KeyError as err:
print(err)
print("Unable to find Events key in data.... SKIP")
continue

if __name__ == "__main__":
stream(os.getenv("NOMAD_ADDR")+"/v1/event/stream", os.getenv("NOMAD_TOKEN"))

```

```
=================================
17:03.34 -> Topic:Job Type:JobRegistered Name:undefined Job:undefined ({'Job': {'Stop': False, 'Region': 'global', 'Namespace': 'default', 'ID': 'hello', 'ParentID': '', 'Name': 'hello', 'Type': 'service', 'Priority': 50, 'AllAtOnce': False, 'Datacenters': ['*'], 'NodePool': 'default', 'Constraints': None, 'Affinities': None, 'Spreads': None, 'TaskGroups': [{'Name': 'h)
=================================
17:03.34 -> Topic:Evaluation Type:JobRegistered Name:undefined Job:undefined ({'Evaluation': {'ID': 'ac30e20a-3f0d-ab1d-a3a6-a0392b145f8c', 'Namespace': 'default', 'Priority': 50, 'Type': 'service', 'TriggeredBy': 'job-register', 'JobID': 'hello', 'JobModifyIndex': 780713, 'Status': 'pending', 'CreateIndex': 780713, 'ModifyIndex': 780713, 'CreateTime': 1718291014573443082, 'M)
=================================
17:03.34 -> Topic:Evaluation Type:PlanResult Name:undefined Job:undefined ({'Evaluation': {'ID': 'ac30e20a-3f0d-ab1d-a3a6-a0392b145f8c', 'Namespace': 'default', 'Priority': 50, 'Type': 'service', 'TriggeredBy': 'job-register', 'JobID': 'hello', 'JobModifyIndex': 780713, 'Status': 'pending', 'CreateIndex': 780713, 'ModifyIndex': 780714, 'CreateTime': 1718291014573443082, 'M)
=================================
17:03.34 -> Topic:Allocation Type:PlanResult Name:undefined Job:undefined ({'Allocation': {'ID': 'd3223314-31a8-1daf-1fa3-77eb927db251', 'Namespace': 'default', 'EvalID': '253d9daf-3bdf-5835-7231-74f12e8b3a25', 'Name': 'hello.servers[1]', 'NodeID': 'd64f374e-51f3-8880-9a47-41a03979f3b5', 'NodeName': 'n2-dev', 'JobID': 'hello', 'TaskGroup': 'servers', 'Resources': {'CPU': 1)
=================================
17:03.34 -> Topic:Allocation Type:PlanResult Name:undefined Job:undefined ({'Allocation': {'ID': '1ae43b51-a15e-b46b-f3d4-adf44cae2022', 'Namespace': 'default', 'EvalID': 'fc58484b-68f2-4060-a072-47da5a83046d', 'Name': 'hello.servers[0]', 'NodeID': '47e6428a-3251-e294-ab9a-60dda10d8a9b', 'NodeName': 'n5-dev', 'JobID': 'hello', 'TaskGroup': 'servers', 'Resources': {'CPU': 1)
=================================
17:03.34 -> Topic:Allocation Type:PlanResult Name:undefined Job:undefined ({'Allocation': {'ID': 'df98bf40-d1a9-6823-ed3b-a6c2cf60a15b', 'Namespace': 'default', 'EvalID': 'ac30e20a-3f0d-ab1d-a3a6-a0392b145f8c', 'Name': 'hello.hello[1]', 'NodeID': '7b53a6e3-ecca-fe73-092c-094ecbd58330', 'NodeName': 'n1-dev', 'JobID': 'hello', 'TaskGroup': 'hello', 'Resources': {'CPU': 150, )
=================================
17:03.34 -> Topic:Deployment Type:PlanResult Name:undefined Job:undefined ({'Deployment': {'ID': '773af71b-b377-9074-23b3-d9cd07573928', 'Namespace': 'default', 'JobID': 'hello', 'JobVersion': 23, 'JobModifyIndex': 780713, 'JobSpecModifyIndex': 780713, 'JobCreateIndex': 758849, 'IsMultiregion': False, 'TaskGroups': {'hello': {'AutoRevert': False, 'AutoPromote': False, 'Pro)
=================================
17:03.34 -> Topic:Allocation Type:PlanResult Name:undefined Job:undefined ({'Allocation': {'ID': '876bce51-b7fd-86c3-5838-c7be5b305a61', 'Namespace': 'default', 'EvalID': 'ac30e20a-3f0d-ab1d-a3a6-a0392b145f8c', 'Name': 'hello.hello[0]', 'NodeID': '8315c70c-0587-bd77-b890-116bbab83439', 'NodeName': 'n4-dev', 'JobID': 'hello', 'TaskGroup': 'hello', 'Resources': {'CPU': 150, )
=================================
17:03.34 -> Topic:Evaluation Type:EvaluationUpdated Name:undefined Job:undefined ({'Evaluation': {'ID': 'ac30e20a-3f0d-ab1d-a3a6-a0392b145f8c', 'Namespace': 'default', 'Priority': 50, 'Type': 'service', 'TriggeredBy': 'job-register', 'JobID': 'hello', 'JobModifyIndex': 780713, 'DeploymentID': '773af71b-b377-9074-23b3-d9cd07573928', 'Status': 'complete', 'QueuedAllocations': {'hel)
=================================
17:03.34 -> Topic:Service Type:ServiceDeregistration Name:undefined Job:undefined ({'Service': {'ID': '_nomad-task-d3223314-31a8-1daf-1fa3-77eb927db251-app-hello-servers-app-www', 'ServiceName': 'hello-servers-app', 'Namespace': 'default', 'NodeID': 'd64f374e-51f3-8880-9a47-41a03979f3b5', 'Datacenter': 'dc1', 'JobID': 'hello', 'AllocID': 'd3223314-31a8-1daf-1fa3-77eb927db251', 'Ta)
=================================
17:03.34 -> Topic:Service Type:ServiceDeregistration Name:undefined Job:undefined ({'Service': {'ID': '_nomad-task-1ae43b51-a15e-b46b-f3d4-adf44cae2022-app-hello-servers-app-www', 'ServiceName': 'hello-servers-app', 'Namespace': 'default', 'NodeID': '47e6428a-3251-e294-ab9a-60dda10d8a9b', 'Datacenter': 'dc1', 'JobID': 'hello', 'AllocID': '1ae43b51-a15e-b46b-f3d4-adf44cae2022', 'Ta)
=================================
17:03.34 -> Topic:Allocation Type:AllocationUpdated Name:undefined Job:undefined ({'Allocation': {'ID': '1ae43b51-a15e-b46b-f3d4-adf44cae2022', 'Namespace': 'default', 'EvalID': 'fc58484b-68f2-4060-a072-47da5a83046d', 'Name': 'hello.servers[0]', 'NodeID': '47e6428a-3251-e294-ab9a-60dda10d8a9b', 'NodeName': 'n5-dev', 'JobID': 'hello', 'TaskGroup': 'servers', 'Resources': {'CPU': 1)
=================================
17:03.34 -> Topic:Node Type:AllocationUpdated Name:undefined Job:undefined ({'Node': {'Attributes': {'os.signals': 'SIGTRAP,SIGTTIN,SIGQUIT,SIGSYS,SIGTSTP,SIGTTOU,SIGUSR1,SIGFPE,SIGSEGV,SIGILL,SIGINT,SIGALRM,SIGBUS,SIGIO,SIGWINCH,SIGPROF,SIGSTOP,SIGTERM,SIGUSR2,SIGABRT,SIGCONT,SIGPIPE,SIGXFSZ,SIGIOT,SIGKILL,SIGXCPU,SIGNULL,SIGHUP', 'cpu.reservablecores': '7', 'plugins.cni.v)
=================================
17:03.34 -> Topic:Allocation Type:AllocationUpdated Name:undefined Job:undefined ({'Allocation': {'ID': 'd3223314-31a8-1daf-1fa3-77eb927db251', 'Namespace': 'default', 'EvalID': '253d9daf-3bdf-5835-7231-74f12e8b3a25', 'Name': 'hello.servers[1]', 'NodeID': 'd64f374e-51f3-8880-9a47-41a03979f3b5', 'NodeName': 'n2-dev', 'JobID': 'hello', 'TaskGroup': 'servers', 'Resources': {'CPU': 1)
=================================
17:03.34 -> Topic:Node Type:AllocationUpdated Name:undefined Job:undefined ({'Node': {'Attributes': {'nomad.version': '1.8.0', 'plugins.cni.version.static': 'v1.1.1', 'unique.network.ip-address': '37.235.104.164', 'os.cgroups.version': '2', 'cpu.arch': 'amd64', 'plugins.cni.version.vrf': 'v1.1.1', 'nomad.bridge.hairpin_mode': 'false', 'plugins.cni.version.bridge': 'v1.1.1',)
=================================
17:03.35 -> Topic:Allocation Type:AllocationUpdated Name:undefined Job:undefined ({'Allocation': {'ID': 'df98bf40-d1a9-6823-ed3b-a6c2cf60a15b', 'Namespace': 'default', 'EvalID': 'ac30e20a-3f0d-ab1d-a3a6-a0392b145f8c', 'Name': 'hello.hello[1]', 'NodeID': '7b53a6e3-ecca-fe73-092c-094ecbd58330', 'NodeName': 'n1-dev', 'JobID': 'hello', 'TaskGroup': 'hello', 'Resources': {'CPU': 150, )
=================================
17:03.35 -> Topic:Node Type:AllocationUpdated Name:undefined Job:undefined ({'Node': {'Attributes': {'plugins.cni.version.ipvlan': 'v1.1.1', 'driver.docker.version': '26.0.0', 'plugins.cni.version.firewall': 'v1.1.1', 'nomad.version': '1.8.0', 'cpu.frequency': '3408', 'numa.node0.cores': '0-4', 'unique.hostname': 'n1-dev.freelo.net', 'plugins.cni.version.tuning': 'v1.1.1', )
=================================

DOWN TIME STARTS

17:03.35 -> Topic:Service Type:ServiceRegistration Name:undefined Job:undefined ({'Service': {'ID': '_nomad-task-876bce51-b7fd-86c3-5838-c7be5b305a61-app-hello-hello-app-www', 'ServiceName': 'hello-hello-app', 'Namespace': 'default', 'NodeID': '8315c70c-0587-bd77-b890-116bbab83439', 'Datacenter': 'dc1', 'JobID': 'hello', 'AllocID': '876bce51-b7fd-86c3-5838-c7be5b305a61', 'Tags':)
=================================
17:03.35 -> Topic:Service Type:ServiceRegistration Name:undefined Job:undefined ({'Service': {'ID': '_nomad-task-df98bf40-d1a9-6823-ed3b-a6c2cf60a15b-app-hello-hello-app-www', 'ServiceName': 'hello-hello-app', 'Namespace': 'default', 'NodeID': '7b53a6e3-ecca-fe73-092c-094ecbd58330', 'Datacenter': 'dc1', 'JobID': 'hello', 'AllocID': 'df98bf40-d1a9-6823-ed3b-a6c2cf60a15b', 'Tags':)
=================================
17:03.35 -> Topic:Allocation Type:AllocationUpdated Name:undefined Job:undefined ({'Allocation': {'ID': 'df98bf40-d1a9-6823-ed3b-a6c2cf60a15b', 'Namespace': 'default', 'EvalID': 'ac30e20a-3f0d-ab1d-a3a6-a0392b145f8c', 'Name': 'hello.hello[1]', 'NodeID': '7b53a6e3-ecca-fe73-092c-094ecbd58330', 'NodeName': 'n1-dev', 'JobID': 'hello', 'TaskGroup': 'hello', 'Resources': {'CPU': 150, )
=================================
17:03.35 -> Topic:Node Type:AllocationUpdated Name:undefined Job:undefined ({'Node': {'Attributes': {'plugins.cni.version.ptp': 'v1.1.1', 'driver.docker.bridge_ip': '172.17.0.1', 'driver.docker.runtimes': 'io.containerd.runc.v2,runc', 'unique.network.ip-address': '37.235.102.157', 'cpu.reservablecores': '5', 'plugins.cni.version.host-local': 'v1.1.1', 'plugins.cni.version.l)
=================================
17:03.36 -> Topic:Allocation Type:AllocationUpdated Name:undefined Job:undefined ({'Allocation': {'ID': '876bce51-b7fd-86c3-5838-c7be5b305a61', 'Namespace': 'default', 'EvalID': 'ac30e20a-3f0d-ab1d-a3a6-a0392b145f8c', 'Name': 'hello.hello[0]', 'NodeID': '8315c70c-0587-bd77-b890-116bbab83439', 'NodeName': 'n4-dev', 'JobID': 'hello', 'TaskGroup': 'hello', 'Resources': {'CPU': 150, )
=================================
17:03.36 -> Topic:Node Type:AllocationUpdated Name:undefined Job:undefined ({'Node': {'Attributes': {'os.version': '12.5', 'nomad.revision': '28b82e4b2259fae5a62e2ed47395334bea5a24c4', 'cpu.usablecompute': '16540', 'plugins.cni.version.loopback': 'v1.1.1', 'plugins.cni.version.vlan': 'v1.1.1', 'cpu.numcores': '5', 'cpu.modelname': 'Intel(R) Xeon(R) E-2236 CPU @ 3.40GHz', 'n)
=================================
17:03.42 -> Topic:Allocation Type:AllocationUpdated Name:undefined Job:undefined ({'Allocation': {'ID': 'df98bf40-d1a9-6823-ed3b-a6c2cf60a15b', 'Namespace': 'default', 'EvalID': 'ac30e20a-3f0d-ab1d-a3a6-a0392b145f8c', 'Name': 'hello.hello[1]', 'NodeID': '7b53a6e3-ecca-fe73-092c-094ecbd58330', 'NodeName': 'n1-dev', 'JobID': 'hello', 'TaskGroup': 'hello', 'Resources': {'CPU': 150, )
=================================
17:03.42 -> Topic:Node Type:AllocationUpdated Name:undefined Job:undefined ({'Node': {'Attributes': {'cpu.usablecompute': '16540', 'plugins.cni.version.vlan': 'v1.1.1', 'plugins.cni.version.sbr': 'v1.1.1', 'driver.docker': '1', 'driver.docker.volumes.enabled': 'true', 'kernel.landlock': 'v2', 'driver.docker.os_type': 'linux', 'cpu.modelname': 'Intel(R) Xeon(R) E-2236 CPU @ )
=================================
17:03.42 -> Topic:Allocation Type:AllocationUpdated Name:undefined Job:undefined ({'Allocation': {'ID': '876bce51-b7fd-86c3-5838-c7be5b305a61', 'Namespace': 'default', 'EvalID': 'ac30e20a-3f0d-ab1d-a3a6-a0392b145f8c', 'Name': 'hello.hello[0]', 'NodeID': '8315c70c-0587-bd77-b890-116bbab83439', 'NodeName': 'n4-dev', 'JobID': 'hello', 'TaskGroup': 'hello', 'Resources': {'CPU': 150, )
=================================
17:03.42 -> Topic:Node Type:AllocationUpdated Name:undefined Job:undefined ({'Node': {'Attributes': {'os.cgroups.version': '2', 'numa.node.count': '1', 'unique.storage.bytesfree': '71301427200', 'plugins.cni.version.ptp': 'v1.1.1', 'kernel.version': '6.1.0-18-amd64', 'memory.totalbytes': '16767406080', 'os.name': 'debian', 'os.signals': 'SIGALRM,SIGFPE,SIGTRAP,SIGTSTP,SIGHU)

NOW RUNING

=================================
17:04.00 -> Topic:Deployment Type:AllocationUpdated Name:undefined Job:undefined ({'Deployment': {'ID': '773af71b-b377-9074-23b3-d9cd07573928', 'Namespace': 'default', 'JobID': 'hello', 'JobVersion': 23, 'JobModifyIndex': 780713, 'JobSpecModifyIndex': 780713, 'JobCreateIndex': 758849, 'IsMultiregion': False, 'TaskGroups': {'hello': {'AutoRevert': False, 'AutoPromote': False, 'Pro)
=================================
17:04.00 -> Topic:Allocation Type:AllocationUpdated Name:undefined Job:undefined ({'Allocation': {'ID': '876bce51-b7fd-86c3-5838-c7be5b305a61', 'Namespace': 'default', 'EvalID': 'ac30e20a-3f0d-ab1d-a3a6-a0392b145f8c', 'Name': 'hello.hello[0]', 'NodeID': '8315c70c-0587-bd77-b890-116bbab83439', 'NodeName': 'n4-dev', 'JobID': 'hello', 'TaskGroup': 'hello', 'Resources': {'CPU': 150, )
=================================
17:04.00 -> Topic:Node Type:AllocationUpdated Name:undefined Job:undefined ({'Node': {'Attributes': {'plugins.cni.version.portmap': 'v1.1.1', 'numa.node0.cores': '0-4', 'plugins.cni.version.dhcp': 'v1.1.1', 'cpu.totalcompute': '17040', 'driver.docker.version': '25.0.3', 'driver.docker.os_type': 'linux', 'cpu.arch': 'amd64', 'nomad.service_discovery': 'true', 'kernel.arch': )
=================================
17:04.01 -> Topic:Deployment Type:AllocationUpdated Name:undefined Job:undefined ({'Deployment': {'ID': '773af71b-b377-9074-23b3-d9cd07573928', 'Namespace': 'default', 'JobID': 'hello', 'JobVersion': 23, 'JobModifyIndex': 780713, 'JobSpecModifyIndex': 780713, 'JobCreateIndex': 758849, 'IsMultiregion': False, 'TaskGroups': {'hello': {'AutoRevert': False, 'AutoPromote': False, 'Pro)
=================================
17:04.01 -> Topic:Allocation Type:AllocationUpdated Name:undefined Job:undefined ({'Allocation': {'ID': 'df98bf40-d1a9-6823-ed3b-a6c2cf60a15b', 'Namespace': 'default', 'EvalID': 'ac30e20a-3f0d-ab1d-a3a6-a0392b145f8c', 'Name': 'hello.hello[1]', 'NodeID': '7b53a6e3-ecca-fe73-092c-094ecbd58330', 'NodeName': 'n1-dev', 'JobID': 'hello', 'TaskGroup': 'hello', 'Resources': {'CPU': 150, )
=================================
17:04.01 -> Topic:Node Type:AllocationUpdated Name:undefined Job:undefined ({'Node': {'Attributes': {'plugins.cni.version.ptp': 'v1.1.1', 'driver.docker.bridge_ip': '172.17.0.1', 'driver.docker.runtimes': 'io.containerd.runc.v2,runc', 'unique.network.ip-address': '37.235.102.157', 'cpu.reservablecores': '5', 'plugins.cni.version.host-local': 'v1.1.1', 'plugins.cni.version.l)
=================================
17:04.01 -> Topic:Evaluation Type:AllocationUpdateDesiredStatus Name:undefined Job:undefined ({'Evaluation': {'ID': '0a32e63e-bc0a-7ca0-b1f2-f6ec34cf175b', 'Namespace': 'default', 'Priority': 50, 'Type': 'service', 'TriggeredBy': 'deployment-watcher', 'JobID': 'hello', 'DeploymentID': '773af71b-b377-9074-23b3-d9cd07573928', 'Status': 'pending', 'CreateIndex': 780729, 'ModifyIndex': 780729, ')
=================================
17:04.01 -> Topic:Deployment Type:PlanResult Name:undefined Job:undefined ({'Deployment': {'ID': '773af71b-b377-9074-23b3-d9cd07573928', 'Namespace': 'default', 'JobID': 'hello', 'JobVersion': 23, 'JobModifyIndex': 780713, 'JobSpecModifyIndex': 780713, 'JobCreateIndex': 758849, 'IsMultiregion': False, 'TaskGroups': {'hello': {'AutoRevert': False, 'AutoPromote': False, 'Pro)
=================================
17:04.01 -> Topic:Job Type:PlanResult Name:undefined Job:undefined ({'Job': {'Stop': False, 'Region': 'global', 'Namespace': 'default', 'ID': 'hello', 'ParentID': '', 'Name': 'hello', 'Type': 'service', 'Priority': 50, 'AllAtOnce': False, 'Datacenters': ['*'], 'NodePool': 'default', 'Constraints': None, 'Affinities': None, 'Spreads': None, 'TaskGroups': [{'Name': 'h)
=================================
17:04.01 -> Topic:Evaluation Type:PlanResult Name:undefined Job:undefined ({'Evaluation': {'ID': '0a32e63e-bc0a-7ca0-b1f2-f6ec34cf175b', 'Namespace': 'default', 'Priority': 50, 'Type': 'service', 'TriggeredBy': 'deployment-watcher', 'JobID': 'hello', 'DeploymentID': '773af71b-b377-9074-23b3-d9cd07573928', 'Status': 'pending', 'CreateIndex': 780729, 'ModifyIndex': 780730, ')
=================================
17:04.01 -> Topic:Allocation Type:PlanResult Name:undefined Job:undefined ({'Allocation': {'ID': 'd3223314-31a8-1daf-1fa3-77eb927db251', 'Namespace': 'default', 'EvalID': '253d9daf-3bdf-5835-7231-74f12e8b3a25', 'Name': 'hello.servers[1]', 'NodeID': 'd64f374e-51f3-8880-9a47-41a03979f3b5', 'NodeName': 'n2-dev', 'JobID': 'hello', 'TaskGroup': 'servers', 'Resources': {'CPU': 1)
=================================
17:04.01 -> Topic:Allocation Type:PlanResult Name:undefined Job:undefined ({'Allocation': {'ID': '1ae43b51-a15e-b46b-f3d4-adf44cae2022', 'Namespace': 'default', 'EvalID': 'fc58484b-68f2-4060-a072-47da5a83046d', 'Name': 'hello.servers[0]', 'NodeID': '47e6428a-3251-e294-ab9a-60dda10d8a9b', 'NodeName': 'n5-dev', 'JobID': 'hello', 'TaskGroup': 'servers', 'Resources': {'CPU': 1)
=================================
17:04.01 -> Topic:Evaluation Type:EvaluationUpdated Name:undefined Job:undefined ({'Evaluation': {'ID': '0a32e63e-bc0a-7ca0-b1f2-f6ec34cf175b', 'Namespace': 'default', 'Priority': 50, 'Type': 'service', 'TriggeredBy': 'deployment-watcher', 'JobID': 'hello', 'DeploymentID': '773af71b-b377-9074-23b3-d9cd07573928', 'Status': 'complete', 'QueuedAllocations': {'hello': 0}, 'SnapshotIn)
```

### Nomad Client logs (if appropriate)

Start with the supplied HCL2 job definition and reproduce an update while running the provided curl loop against the health endpoint. Compare the event stream captured by the Python script with the deployment and service deregistration events; done means repeated updates keep the service available without the reported 2–10 second downtime.

Written by the indexing model from the issue text.