fa86555eed
* keep track of per pod status on crawljob: - crashes time, and reason - 'used' vs 'allocated' resources - 'percent' used / allocated * crawl log errors: log error when crawler crashes via OOM, either via redis error log or to console * add initial autoscaling support! - detect if metrics server is available via K8SApi.is_pod_metrics_available() - if available, use metrics for 'used' fields - if no metrics, set memory used for redis only (using redis apis) - allow overriding memory and cpu via newMemory and newCpu settings on pod status - scale memory / cpu based on newMemory and newCpu setting - templates: update jinja templates to allow restarting crawler and redis with new resources - ci: enable metrics-server on k3d, microk8s and nightly k3d ci runs * roles: cleanup unused roles, add permissions for listing metrics * stats for running crawls: - update in db via operator - avoids losing stats if redis pod happens to be done - tradeoff is more db access in operator, but less extra connections to redis + already loading from db in backend - size stat: ensure size of previous files is added to the stats * crawler deployment tweaks: - adjust cpu/mem per browser - add --headless flag to configmap to use new headless mode by default!
112 lines
2.8 KiB
Python
112 lines
2.8 KiB
Python
""" k8s utils """
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from typing import Optional
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import os
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import asyncio
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import json
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import sys
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import signal
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import atexit
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from datetime import datetime
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from redis import asyncio as exceptions
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def get_templates_dir():
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"""return directory containing templates for loading"""
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return os.path.join(os.path.dirname(__file__), "templates")
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def from_k8s_date(string):
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"""convert k8s date string to datetime"""
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return datetime.fromisoformat(string[:-1]) if string else None
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def to_k8s_date(dt_val):
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"""convert datetime to string for k8s"""
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return dt_val.isoformat("T") + "Z"
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def dt_now():
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"""get current ts"""
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return datetime.utcnow().replace(microsecond=0, tzinfo=None)
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def ts_now():
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"""get current ts"""
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return str(dt_now())
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async def get_redis_crawl_stats(redis, crawl_id):
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"""get page stats"""
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try:
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# crawler >0.9.0, done key is a value
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pages_done = int(await redis.get(f"{crawl_id}:d") or 0)
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except exceptions.ResponseError:
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# crawler <=0.9.0, done key is a list
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pages_done = await redis.llen(f"{crawl_id}:d")
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pages_found = await redis.scard(f"{crawl_id}:s")
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sizes = await redis.hgetall(f"{crawl_id}:size")
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archive_size = sum(int(x) for x in sizes.values())
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stats = {"found": pages_found, "done": pages_done, "size": archive_size}
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return stats, sizes
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def run_once_lock(name):
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"""run once lock via temp directory
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- if dir doesn't exist, return true
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- if exists, return false"""
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lock_dir = "/tmp/." + name
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try:
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os.mkdir(lock_dir)
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# pylint: disable=bare-except
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except:
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return False
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# just in case, delete dir on exit
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def del_dir():
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print("release lock: " + lock_dir, flush=True)
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os.rmdir(lock_dir)
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atexit.register(del_dir)
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return True
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def register_exit_handler():
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"""register exit handler to exit on SIGTERM"""
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loop = asyncio.get_running_loop()
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def exit_handler():
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"""sigterm handler"""
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print("SIGTERM received, exiting")
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sys.exit(1)
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loop.add_signal_handler(signal.SIGTERM, exit_handler)
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def parse_jsonl_error_messages(errors):
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"""parse json-l error strings from redis/db into json"""
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parsed_errors = []
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for error_line in errors:
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if not error_line:
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continue
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try:
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result = json.loads(error_line)
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parsed_errors.append(result)
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except json.JSONDecodeError as err:
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print(
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f"Error decoding json-l error line: {error_line}. Error: {err}",
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flush=True,
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)
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return parsed_errors
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def is_bool(stri: Optional[str]) -> bool:
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"""Check if the string parameter is stringly true"""
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if stri:
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return stri.lower() in ("true", "1", "yes")
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return False
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