Bonjour, 
Today!
Nomad v1.7.6
Consul v1.18.0
Vault v1.15.6
I try another times Hashistack with Workload identity, I hope one day to solve this: Permission denied except example mongo job
Meanwhile I try another test job, a mosquitto stack like this:
job "mosquitto-stack" {
region = "global"
datacenters = ["dc1"]
type = "service"
node_pool = "all"
group "mosquitto-server" {
count = 1
restart {
attempts = 10
interval = "5m"
delay = "10s"
mode = "delay"
}
network {
mode = "bridge"
port "mqtt" {
to = 1883
static = 1883
}
}
service {
name = "mqtt"
port = "1883"
connect {
sidecar_service {}
sidecar_task {
resources {
cpu = 64
memory = 64
}
}
}
}
task "server" {
driver = "docker"
config {
image = "eclipse-mosquitto:latest"
mount {
type = "bind"
target = "/mosquitto/config/mosquitto.conf"
source = "local/mosquitto.conf"
readonly = false
bind_options {
propagation = "rshared"
}
}
ports = ["mqtt"]
}
template {
data = <<EOH
listener 1883
allow_anonymous true
EOH
destination = "local/mosquitto.conf"
}
template {
data = <<EOH
ANSIBLE_FORCE_COLOR=TRUE
EOH
destination = "secrets/file.env"
env = true
}
resources {
cpu = 128
memory = 128
}
}
}
group "mosquitto-client" {
count = 1
restart {
attempts = 10
interval = "5m"
delay = "10s"
mode = "delay"
}
network {
mode = "bridge"
}
service {
name = "mesh"
connect {
sidecar_service {
proxy {
upstreams {
destination_name = "mqtt"
local_bind_port = "1883"
}
}
}
sidecar_task {
resources {
cpu = 64
memory = 64
}
}
}
}
task "client" {
driver = "docker"
config {
image = "alpine:latest"
entrypoint = ["/bin/sleep", "3600"]
}
resources {
cpu = 128
memory = 128
}
}
}
}
And new error! 
Task hook failed: envoy_bootstrap: error creating bootstrap configuration for Connect proxy sidecar: exit status 1; see: <https://developer.hashicorp.com/nomad/s/envoy-bootstrap-error>
With these logs, I don’t know if it’s revelant:
Mar 29 14:14:53 sandbox nomad[47832]: 2024-03-29T14:14:53.723+0100 [DEBUG] nomad: memberlist: Stream connection from=127.0.0.1:33840
Mar 29 14:14:55 sandbox consul[22198]: 2024-03-29T14:14:55.222+0100 [WARN] agent: Check TCP connection failed: check=_nomad-check-55f807ac82d50afb200485e0caecc37d48aae135 error="dial tcp XXX.XXX.XXX.XXX(BIG SECRET):443: connect: connection refused"
Mar 29 14:14:55 sandbox consul[22198]: 2024-03-29T14:14:55.222+0100 [WARN] agent: Check is now critical: check=_nomad-check-55f807ac82d50afb200485e0caecc37d48aae135
Mar 29 14:14:59 sandbox kernel: [269826.908380] [UFW BLOCK] IN=nomad OUT=nomad PHYSIN=vethb13ea72f PHYSOUT=veth10cde3e5 MAC=33:33:00:00:00:02:da:c3:b3:e2:a6:da:86:dd SRC=fe80:0000:0000:0000:d8c3:b3ff:fee2:a6da DST=ff02:0000:0000:0000:0000:0000:0000:0002 LEN=56 TC=0 HOPLIMIT=255 FLOWLBL=0 PROTO=ICMPv6 TYPE=133 CODE=0
Mar 29 14:15:01 sandbox consul[22198]: 2024-03-29T14:15:01.656+0100 [ERROR] agent.http: Request error: method=PUT url=/v1/agent/service/deregister/_nomad-task-f738180a-8964-0d63-5395-4949dee4a568-group-traefik-traefik-metrics-traefik_metrics from=127.0.0.1:47672 error="ACL not found"
Mar 29 14:15:02 sandbox nomad[47832]: 2024-03-29T14:15:02.390+0100 [INFO] client.alloc_runner.task_runner: Task event: alloc_id=07124209-2c68-4d2a-0f74-46ef717d12e4 task=connect-proxy-mesh type="Task hook failed" msg="envoy_bootstrap: error creating bootstrap configuration for Connect proxy sidecar: exit status 1; see: <https://developer.hashicorp.com/nomad/s/envoy-bootstrap-error>" failed=false
Mar 29 14:15:02 sandbox nomad[47832]: 2024-03-29T14:15:02.394+0100 [ERROR] client.alloc_runner.task_runner: prestart failed: alloc_id=07124209-2c68-4d2a-0f74-46ef717d12e4 task=connect-proxy-mesh error="prestart hook \"envoy_bootstrap\" failed: error creating bootstrap configuration for Connect proxy sidecar: exit status 1; see: <https://developer.hashicorp.com/nomad/s/envoy-bootstrap-error>"
Mar 29 14:15:02 sandbox nomad[47832]: 2024-03-29T14:15:02.395+0100 [INFO] client.alloc_runner.task_runner: restarting task: alloc_id=07124209-2c68-4d2a-0f74-46ef717d12e4 task=connect-proxy-mesh reason="Restart within policy" delay=11.00834248s
Mar 29 14:15:02 sandbox nomad[47832]: 2024-03-29T14:15:02.395+0100 [INFO] client.alloc_runner.task_runner: Task event: alloc_id=07124209-2c68-4d2a-0f74-46ef717d12e4 task=connect-proxy-mesh type=Restarting msg="Task restarting in 11.00834248s" failed=false
Mar 29 14:15:02 sandbox nomad[47832]: 2024-03-29T14:15:02.470+0100 [INFO] client.alloc_runner.task_runner: Task event: alloc_id=c8706d23-ce39-0e0e-1e92-4c72873f72d9 task=connect-proxy-mqtt type="Task hook failed" msg="envoy_bootstrap: error creating bootstrap configuration for Connect proxy sidecar: exit status 1; see: <https://developer.hashicorp.com/nomad/s/envoy-bootstrap-error>" failed=false
Mar 29 14:15:02 sandbox nomad[47832]: 2024-03-29T14:15:02.471+0100 [ERROR] client.alloc_runner.task_runner: prestart failed: alloc_id=c8706d23-ce39-0e0e-1e92-4c72873f72d9 task=connect-proxy-mqtt error="prestart hook \"envoy_bootstrap\" failed: error creating bootstrap configuration for Connect proxy sidecar: exit status 1; see: <https://developer.hashicorp.com/nomad/s/envoy-bootstrap-error>"
Mar 29 14:15:02 sandbox nomad[47832]: 2024-03-29T14:15:02.471+0100 [INFO] client.alloc_runner.task_runner: restarting task: alloc_id=c8706d23-ce39-0e0e-1e92-4c72873f72d9 task=connect-proxy-mqtt reason="Restart within policy" delay=11.00834248s
Help… 
