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stack-orchestrator
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feat: add `deployment prepare` command (so-076.1) 

Refactors K8sDeployer.up() into three composable methods:
- _setup_cluster_and_namespace(): kind cluster, API, namespace, ingress
- _create_infrastructure(): PVs, PVCs, ConfigMaps, Services, NodePorts
- _create_deployment(): Deployment resource (pods)

`prepare` calls the first two only — creates all cluster infrastructure
without starting pods. This eliminates the scale-to-0 workaround where
operators had to run `deployment start` then immediately scale down.

Usage: laconic-so deployment --dir <dir> prepare

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
fix/kind-mount-propagation
A. F. Dudley 2026-03-08 06:56:34 +00:00
parent 9c5b8e3f4e
commit 974eed0c73
5 changed files with 73 additions and 30 deletions
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1
.gitignore vendored
View File

@ -8,3 +8,4 @@ __pycache__
package
stack_orchestrator/data/build_tag.txt
/build
.worktrees

6
stack_orchestrator/deploy/deploy.py
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@ -182,6 +182,12 @@ def status_operation(ctx):
ctx.obj.deployer.status()
def prepare_operation(ctx, skip_cluster_management=False):
ctx.obj.deployer.prepare(
skip_cluster_management=skip_cluster_management,
)
def update_envs_operation(ctx):
ctx.obj.deployer.update_envs()

9
stack_orchestrator/deploy/deployer.py
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@ -69,6 +69,15 @@ class Deployer(ABC):
def run_job(self, job_name: str, release_name: Optional[str] = None):
pass
def prepare(self, skip_cluster_management):
"""Create cluster infrastructure (namespace, PVs, services) without starting pods.
Only supported for k8s deployers. Compose deployers raise an error.
"""
raise DeployerException(
"prepare is only supported for k8s deployments"
)
class DeployerException(Exception):
def __init__(self, *args: object) -> None:

22
stack_orchestrator/deploy/deployment.py
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@ -23,6 +23,7 @@ from stack_orchestrator.deploy.images import push_images_operation
from stack_orchestrator.deploy.deploy import (
up_operation,
down_operation,
prepare_operation,
ps_operation,
port_operation,
status_operation,
@ -125,6 +126,27 @@ def start(ctx, stay_attached, skip_cluster_management, extra_args):
up_operation(ctx, services_list, stay_attached, skip_cluster_management)
@command.command()
@click.option(
"--skip-cluster-management/--perform-cluster-management",
default=False,
help="Skip cluster initialization (only for kind-k8s deployments)",
)
@click.pass_context
def prepare(ctx, skip_cluster_management):
"""Create cluster infrastructure without starting pods.
Sets up the kind cluster, namespace, PVs, PVCs, ConfigMaps, Services,
and Ingresses — everything that 'start' does EXCEPT creating the
Deployment resource. No pods will be scheduled.
Use 'start --skip-cluster-management' afterward to create the Deployment
and start pods when ready.
"""
ctx.obj = make_deploy_context(ctx)
prepare_operation(ctx, skip_cluster_management)
# TODO: remove legacy up command since it's an alias for stop
@command.command()
@click.option(

65
stack_orchestrator/deploy/k8s/deploy_k8s.py
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@ -371,22 +371,15 @@ class K8sDeployer(Deployer):
self._ensure_config_map(cfg_map)
def _create_deployment(self):
# Process compose files into a Deployment
"""Create the k8s Deployment resource (which starts pods)."""
deployment = self.cluster_info.get_deployment(
image_pull_policy=None if self.is_kind() else "Always"
)
# Create the k8s objects
if opts.o.debug:
print(f"Sending this deployment: {deployment}")
if not opts.o.dry_run:
self._ensure_deployment(deployment)
service = self.cluster_info.get_service()
if opts.o.debug:
print(f"Sending this service: {service}")
if service and not opts.o.dry_run:
self._ensure_service(service)
def _find_certificate_for_host_name(self, host_name):
all_certificates = self.custom_obj_api.list_namespaced_custom_object(
group="cert-manager.io",
@ -424,24 +417,25 @@ class K8sDeployer(Deployer):
return None
def up(self, detach, skip_cluster_management, services):
self._setup_cluster_and_namespace(skip_cluster_management)
self._create_infrastructure()
self._create_deployment()
def _setup_cluster_and_namespace(self, skip_cluster_management):
"""Create kind cluster (if needed) and namespace. Shared by up() and prepare()."""
self.skip_cluster_management = skip_cluster_management
if not opts.o.dry_run:
if self.is_kind() and not self.skip_cluster_management:
# Create the kind cluster (or reuse existing one)
kind_config = str(
self.deployment_dir.joinpath(constants.kind_config_filename)
)
actual_cluster = create_cluster(self.kind_cluster_name, kind_config)
if actual_cluster != self.kind_cluster_name:
# An existing cluster was found, use it instead
self.kind_cluster_name = actual_cluster
# Only load locally-built images into kind
# Registry images (docker.io, ghcr.io, etc.) will be pulled by k8s
local_containers = self.deployment_context.stack.obj.get(
"containers", []
)
if local_containers:
# Filter image_set to only images matching local containers
local_images = {
img
for img in self.cluster_info.image_set
@ -449,47 +443,48 @@ class K8sDeployer(Deployer):
}
if local_images:
load_images_into_kind(self.kind_cluster_name, local_images)
# Note: if no local containers defined, all images come from registries
self.connect_api()
# Create deployment-specific namespace for resource isolation
self._ensure_namespace()
if self.is_kind() and not self.skip_cluster_management:
# Configure ingress controller (not installed by default in kind)
# Skip if already running (idempotent for shared cluster)
if not is_ingress_running():
install_ingress_for_kind(self.cluster_info.spec.get_acme_email())
# Wait for ingress to start
# (deployment provisioning will fail unless this is done)
wait_for_ingress_in_kind()
# Create RuntimeClass if unlimited_memlock is enabled
if self.cluster_info.spec.get_unlimited_memlock():
_create_runtime_class(
constants.high_memlock_runtime,
constants.high_memlock_runtime,
)
else:
print("Dry run mode enabled, skipping k8s API connect")
# Create registry secret if configured
def _create_infrastructure(self):
"""Create PVs, PVCs, ConfigMaps, Services, Ingresses, NodePorts.
Everything except the Deployment resource (which starts pods).
Shared by up() and prepare().
"""
from stack_orchestrator.deploy.deployment_create import create_registry_secret
create_registry_secret(self.cluster_info.spec, self.cluster_info.app_name)
self._create_volume_data()
self._create_deployment()
# Create the ClusterIP service (paired with the deployment)
service = self.cluster_info.get_service()
if service and not opts.o.dry_run:
if opts.o.debug:
print(f"Sending this service: {service}")
self._ensure_service(service)
http_proxy_info = self.cluster_info.spec.get_http_proxy()
# Note: we don't support tls for kind (enabling tls causes errors)
use_tls = http_proxy_info and not self.is_kind()
certificate = (
self._find_certificate_for_host_name(http_proxy_info[0]["host-name"])
if use_tls
else None
)
if opts.o.debug:
if certificate:
print(f"Using existing certificate: {certificate}")
if opts.o.debug and certificate:
print(f"Using existing certificate: {certificate}")
ingress = self.cluster_info.get_ingress(
use_tls=use_tls, certificate=certificate
@ -499,9 +494,8 @@ class K8sDeployer(Deployer):
print(f"Sending this ingress: {ingress}")
if not opts.o.dry_run:
self._ensure_ingress(ingress)
else:
if opts.o.debug:
print("No ingress configured")
elif opts.o.debug:
print("No ingress configured")
nodeports: List[client.V1Service] = self.cluster_info.get_nodeports()
for nodeport in nodeports:
@ -510,6 +504,17 @@ class K8sDeployer(Deployer):
if not opts.o.dry_run:
self._ensure_service(nodeport, kind="NodePort")
def prepare(self, skip_cluster_management):
"""Create cluster infrastructure without starting pods.
Sets up kind cluster, namespace, PVs, PVCs, ConfigMaps, Services,
Ingresses, and NodePorts — everything that up() does EXCEPT creating
the Deployment resource.
"""
self._setup_cluster_and_namespace(skip_cluster_management)
self._create_infrastructure()
print("Cluster infrastructure prepared (no pods started).")
def down(self, timeout, volumes, skip_cluster_management):
self.skip_cluster_management = skip_cluster_management
self.connect_api()