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annotate scrape_job.py @ 74:177c0a2eab1e
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| author | drewp@bigasterisk.com |
|---|---|
| date | Fri, 03 May 2024 15:00:40 -0700 |
| parents | adde35eb4773 |
| children |
| rev | line source |
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| 61 | 1 import json |
| 2 from pathlib import Path | |
| 3 import subprocess | |
| 4 | |
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5 class FromName: |
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6 pass |
| 61 | 7 |
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8 def jobConfig(name, targets, scrape_interval=None, ping_job=False, metrics_path=None, params=None, https=False): |
| 61 | 9 """one scrape job config""" |
| 10 ret = { | |
| 11 "job_name": name, | |
| 12 "relabel_configs": [ | |
| 13 { | |
| 14 "target_label": "namespace", | |
| 15 "replacement": "default" | |
| 16 }, | |
| 17 { | |
| 18 "source_labels": ["__meta_kubernetes_pod_node_name"], | |
| 19 "target_label": "node" | |
| 20 }, | |
| 21 ] | |
| 22 } | |
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23 |
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24 if targets is FromName: |
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25 targets = [name] |
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26 |
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27 if targets: |
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28 ret["static_configs"] = [{ |
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29 "targets": targets, |
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30 }] |
| 61 | 31 |
| 32 if metrics_path: | |
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33 ret.setdefault('relabel_configs', []).append({ |
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34 "action": "replace", |
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35 "target_label": "__metrics_path__", |
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36 "replacement": metrics_path, |
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37 }) |
| 61 | 38 |
| 39 if scrape_interval: | |
| 40 ret['scrape_interval'] = scrape_interval | |
| 41 | |
| 42 if params: | |
| 43 ret['params'] = params | |
| 44 | |
| 45 if ping_job: | |
| 46 ret['metrics_path'] = '/probe' | |
| 47 ret['params'] = {'module': ['icmp']} | |
| 48 ret["relabel_configs"] = [ | |
| 49 { | |
| 50 "source_labels": ["__address__"], | |
| 51 "target_label": "__param_target" | |
| 52 }, | |
| 53 { | |
| 54 "source_labels": ["__param_target"], | |
| 55 "target_label": "instance" | |
| 56 }, | |
| 57 { | |
| 58 "target_label": "__address__", | |
| 59 "replacement": "prober" | |
| 60 }, | |
| 61 ] | |
| 62 | |
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63 if https: |
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64 ret['scheme'] = 'https' |
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65 ret["tls_config"] = {"ca_file": "/var/run/secrets/kubernetes.io/serviceaccount/ca.crt"} |
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66 ret["bearer_token_file"] = "/var/run/secrets/kubernetes.io/serviceaccount/token" |
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67 |
| 61 | 68 return ret |
| 69 | |
| 70 | |
| 71 def current_deployments(): | |
| 72 deploys = json.loads(subprocess.check_output(['kubectl', 'get', 'deploy', '-o=json'])) | |
| 73 for deploy in deploys['items']: | |
| 74 name = deploy['metadata']['name'] | |
| 75 yield name | |
| 76 | |
| 77 | |
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78 def scrape_deployments(skip_names): |
| 61 | 79 ret = [] |
| 80 for name in current_deployments(): | |
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81 if name in skip_names: |
| 61 | 82 continue |
| 83 targets = [name] | |
| 84 ret.append(jobConfig(name=name, targets=targets)) | |
| 85 return ret | |
| 86 | |
| 87 | |
| 88 def writeJobConfigs(outDir: Path, jobConfs: list, retention: str): | |
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89 outDir.mkdir(exist_ok=True, parents=True) |
| 61 | 90 filenames_written = [] |
| 91 for job in jobConfs: | |
| 92 filename = f'job_{job["job_name"]}.yaml' | |
| 93 (outDir / filename).write_text(json.dumps([job], indent=2, sort_keys=True)) | |
| 94 filenames_written.append(filename) | |
| 95 | |
| 96 (outDir / f'scrape_{retention}.yaml').write_text(json.dumps({ | |
| 97 "global": { | |
| 98 "scrape_interval": "1m", | |
| 99 "scrape_timeout": "10s" | |
| 100 }, | |
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101 "scrape_config_files": sorted(filenames_written), |
| 61 | 102 }, indent=2)) |