218 lines
9.5 KiB
Python
218 lines
9.5 KiB
Python
from email_validator import validate_email, EmailNotValidError
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from functools import wraps
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from shutil import which
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from typing import Callable, Optional
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from zoneinfo import available_timezones
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import CloudFlare
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import netaddr
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import re
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import requests
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import socket
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import sys
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DISTRIBUTIONS = ["k0s", "k3s", "talos"]
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GLOBAL_CLI_TOOLS = ["age", "cloudflared", "flux", "sops", "jq", "kubeconform", "kustomize"]
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TALOS_CLI_TOOLS = ["talosctl", "talhelper"]
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K0S_CLI_TOOLS = ["k0sctl"]
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def required(*keys: str):
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def wrapper_outter(func: Callable):
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@wraps(func)
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def wrapper(data: dict, *args, **kwargs) -> None:
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for key in keys:
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if data.get(key) is None:
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raise ValueError(f"Missing required key {key}")
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return func(*[data[key] for key in keys], **kwargs)
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return wrapper
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return wrapper_outter
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def _validate_ip(ip: str) -> str:
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try:
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netaddr.IPAddress(ip)
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except netaddr.core.AddrFormatError as e:
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raise ValueError(f"Invalid IP address {ip}") from e
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return ip
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def _validate_cidr(cidr: str, family: int) -> str:
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try:
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network = netaddr.IPNetwork(cidr)
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if network.version != family:
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raise ValueError(f"Invalid CIDR family {network.version}")
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except netaddr.core.AddrFormatError as e:
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raise ValueError(f"Invalid CIDR {cidr}") from e
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return cidr
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def _validate_distribution(distribution: str) -> None:
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if distribution not in DISTRIBUTIONS:
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raise ValueError(f"Invalid distribution {distribution}")
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return distribution
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def _validate_node(node: dict, node_cidr: str, distribution: str) -> None:
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if not node.get("name"):
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raise ValueError(f"A node is missing a name")
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if not node.get("username") and distribution not in ["k0s", "k3s"]:
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raise ValueError(f"Node {node.get('name')} is missing a username")
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if not node.get("diskSerial") and distribution in ["talos"]:
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raise ValueError(f"Node {node.get('name')} is missing a disk serial")
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if not re.match(r"^[a-z0-9-\.]+$", node.get('name')):
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raise ValueError(f"Node {node.get('name')} has an invalid name")
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ip = _validate_ip(node.get("address"))
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if netaddr.IPAddress(ip, 4) not in netaddr.IPNetwork(node_cidr):
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raise ValueError(f"Node {node.get('name')} is not in the node CIDR {node_cidr}")
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port = 50000 if distribution == "talos" else 22
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with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
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sock.settimeout(5)
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result = sock.connect_ex((ip, port))
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if result != 0:
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raise ValueError(f"Node {node.get('name')} port {port} is not open")
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def validate_python_version() -> None:
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required_version = (3, 11, 0)
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if sys.version_info < required_version:
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raise ValueError(f"Python version is below 3.11. Please upgrade.")
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@required("bootstrap_distribution")
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def validate_cli_tools(distribution: str, **_) -> None:
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distro = _validate_distribution(distribution)
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for tool in GLOBAL_CLI_TOOLS:
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if not which(tool):
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raise ValueError(f"Missing required CLI tool {tool}")
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for tool in TALOS_CLI_TOOLS if distro == "talos" else []:
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if not which(tool):
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raise ValueError(f"Missing required CLI tool {tool}")
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for tool in K0S_CLI_TOOLS if distro == "k0s" else []:
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if not which(tool):
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raise ValueError(f"Missing required CLI tool {tool}")
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@required("bootstrap_distribution")
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def validate_distribution(distribution: str, **_) -> None:
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_validate_distribution(distribution)
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@required("bootstrap_github_username", "bootstrap_github_repository_name", "bootstrap_github_repository_branch")
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def validate_github(username: str, repository: str, branch: str, **_) -> None:
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try:
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request = requests.get(f"https://api.github.com/repos/{username}/{repository}/branches/{branch}")
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if request.status_code != 200:
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raise ValueError(f"GitHub repository {username}/{repository} branch {branch} not found")
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except requests.exceptions.RequestException as e:
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raise ValueError(f"GitHub repository {username}/{repository} branch {branch} not found") from e
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@required("bootstrap_age_public_key")
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def validate_age(key: str, **_) -> None:
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if not re.match(r"^age1[a-z0-9]{0,58}$", key):
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raise ValueError(f"Invalid Age public key {key}")
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@required("bootstrap_timezone")
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def validate_timezone(timezone: str, **_) -> None:
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if not timezone in available_timezones():
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raise ValueError(f"Invalid timezone {timezone}")
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@required("bootstrap_ipv6_enabled", "bootstrap_cluster_cidr", "bootstrap_service_cidr")
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def validate_cluster_cidrs(ipv6_enabled: bool, cluster_cidr: str, service_cidr: str, **_) -> None:
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if not isinstance(ipv6_enabled, bool):
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raise ValueError(f"Invalid IPv6 enabled {ipv6_enabled}")
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if cluster_cidr == service_cidr:
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raise ValueError(f"Cluster CIDR {cluster_cidr} is the same as service CIDR {service_cidr}")
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if ipv6_enabled:
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if len(cluster_cidr.split(",")) != 2:
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raise ValueError(f"Invalid cluster CIDR {cluster_cidr}")
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if len(service_cidr.split(",")) != 2:
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raise ValueError(f"Invalid service CIDR {service_cidr}")
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cluster_ipv4, cluster_ipv6 = cluster_cidr.split(",")
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_validate_cidr(cluster_ipv4, 4)
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_validate_cidr(cluster_ipv6, 6)
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service_ipv4, service_ipv6 = service_cidr.split(",")
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_validate_cidr(service_ipv4, 4)
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_validate_cidr(service_ipv6, 6)
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return
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if len(cluster_cidr.split(",")) != 1:
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raise ValueError(f"Invalid cluster CIDR {cluster_cidr}")
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if len(service_cidr.split(",")) != 1:
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raise ValueError(f"Invalid service CIDR {service_cidr}")
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_validate_cidr(cluster_cidr, 4)
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_validate_cidr(service_cidr, 4)
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@required("bootstrap_acme_email", "bootstrap_acme_production_enabled")
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def validate_acme_email(email: str, acme_production: bool, **_) -> None:
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try:
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validate_email(email)
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except EmailNotValidError as e:
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raise ValueError(f"Invalid ACME email {email}") from e
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@required("bootstrap_flux_github_webhook_token")
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def validate_flux_github_webhook_token(token: str, **_) -> None:
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if not re.match(r"^[a-zA-Z0-9]+$", token):
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raise ValueError(f"Invalid Flux GitHub webhook token ***")
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@required("bootstrap_cloudflare_domain", "bootstrap_cloudflare_token", "bootstrap_cloudflare_account_tag", "bootstrap_cloudflare_tunnel_secret", "bootstrap_cloudflare_tunnel_id")
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def validate_cloudflare(domain: str, token: str, account_tag: str, tunnel_secret: str, tunnel_id: str, **_) -> None:
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try:
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cf = CloudFlare.CloudFlare(token=token)
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zones = cf.zones.get(params={"name": domain})
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if not zones:
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raise ValueError(f"Cloudflare domain {domain} not found or token does not have access to it")
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except CloudFlare.exceptions.CloudFlareAPIError as e:
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raise ValueError(f"Cloudflare domain {domain} not found or token does not have access to it") from e
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@required("bootstrap_dns_server")
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def validate_bootstrap_dns_server(dns_server: str, **_) -> None:
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_validate_ip(dns_server)
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@required("bootstrap_node_cidr", "bootstrap_kube_api_addr", "bootstrap_k8s_gateway_addr", "bootstrap_external_ingress_addr", "bootstrap_internal_ingress_addr")
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def validate_host_network(node_cidr: str, api_addr: str, gateway_addr: str, external_ingress_addr: str, internal_ingress_addr: str, **_) -> None:
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_validate_cidr(node_cidr, 4)
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_validate_ip(api_addr)
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_validate_ip(gateway_addr)
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_validate_ip(external_ingress_addr)
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_validate_ip(internal_ingress_addr)
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addrs = [api_addr, gateway_addr, external_ingress_addr, internal_ingress_addr]
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unique = set(addrs)
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if len(addrs) != len(unique):
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raise ValueError(f"{api_addr} and {gateway_addr} and {external_ingress_addr} and {internal_ingress_addr} are not unique")
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node_cidr = netaddr.IPNetwork(node_cidr)
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if netaddr.IPAddress(api_addr) not in node_cidr:
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raise ValueError(f"Kubernetes API address {api_addr} is not in the node CIDR {node_cidr}")
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if netaddr.IPAddress(gateway_addr) not in node_cidr:
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raise ValueError(f"Kubernetes gateway address {gateway_addr} is not in the node CIDR {node_cidr}")
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if netaddr.IPAddress(external_ingress_addr) not in node_cidr:
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raise ValueError(f"Kubernetes external ingress address {external_ingress_addr} is not in the node CIDR {node_cidr}")
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if netaddr.IPAddress(internal_ingress_addr) not in node_cidr:
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raise ValueError(f"Kubernetes internal ingress address {internal_ingress_addr} is not in the node CIDR {node_cidr}")
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@required("bootstrap_node_cidr", "bootstrap_nodes", "bootstrap_distribution")
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def validate_nodes(node_cidr: str, nodes: dict[list], distribution: str, **_) -> None:
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node_cidr = _validate_cidr(node_cidr, 4)
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masters = nodes.get("master", [])
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if len(masters) < 1:
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raise ValueError(f"Must have at least one master node")
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if len(masters) % 2 == 0:
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raise ValueError(f"Must have an odd number of master nodes")
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for node in masters:
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_validate_node(node, node_cidr, distribution)
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workers = nodes.get("worker", [])
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for node in workers:
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_validate_node(node, node_cidr, distribution)
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def validate(data: dict) -> None:
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validate_python_version()
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validate_cli_tools(data)
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validate_distribution(data)
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validate_github(data)
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validate_age(data)
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validate_timezone(data)
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validate_acme_email(data)
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validate_flux_github_webhook_token(data)
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validate_cloudflare(data)
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validate_host_network(data)
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validate_bootstrap_dns_server(data)
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validate_cluster_cidrs(data)
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validate_nodes(data)
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