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August 20, 2018 08:08
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#!/usr/bin/env python3 | |
##------------------------------------------------------------------- | |
## File: check_es_gc_count.py | |
## Author : Hai Dam | |
## Description : List full gc count for all es nodes | |
## python check_es_gc_count.py --es_host 192.168.0.2 --max_full_gc 300 | |
## -- | |
## Created : <2018-08-19> | |
## Updated: Time-stamp: <2018-08-20 13:30:43> | |
##------------------------------------------------------------------- | |
import sys | |
import argparse, socket | |
import requests, json | |
# curl "http://$es_ip:9200/_nodes/stats" \ | |
# | jq '[ .nodes | to_entries | sort_by(.value.jvm.gc.collectors.old.collection_count) | .[] | { node: .value.name, full_gc_count: .value.jvm.gc.collectors.old.collection_count } ]' | |
def get_es_gc_count(es_host, es_port): | |
url = "http://%s:%s/_nodes/stats" % (es_host, es_port) | |
r = requests.get(url) | |
if r.status_code != 200: raise Exception("Fail to run REST API: %s. Content: %s" % (url, r.content)) | |
content_json = json.loads(r.content) | |
nodes_dict = content_json["nodes"] | |
res = [] | |
for key in nodes_dict: | |
res.append([nodes_dict[key]["name"], nodes_dict[key]["host"], nodes_dict[key]["jvm"]["gc"]["collectors"]["old"]["collection_count"]]) | |
return sorted(res, key=lambda item: item[2], reverse=True) | |
def check_es_gc_count(es_host, es_port, max_full_gc): | |
l = get_es_gc_count(es_host, es_port) | |
failed_nodes = [] | |
print("ES nodes full gc, sorted in a reverse order") | |
for [node_name, node_ip, gc_count] in l: | |
print("%s\t%s\t%s" % (node_name, node_ip, gc_count)) | |
if int(gc_count) >= max_full_gc: | |
failed_nodes.append((node_name, node_ip)) | |
if len(failed_nodes) != 0: | |
print("Error: below nodes have full gc more than %d:" % (max_full_gc)) | |
for (node_name, node_ip) in failed_nodes: | |
print("%s\t%s" % (node_name, node_ip)) | |
return False | |
return True | |
if __name__ == '__main__': | |
parser = argparse.ArgumentParser() | |
parser.add_argument('--es_host', required=False, \ | |
help="server ip or hostname for elasticsearch instance. Default value is ip of eth0", type=str) | |
parser.add_argument('--es_port', default='9200', required=False, \ | |
help="server port for elasticsearch instance", type=str) | |
parser.add_argument('--max_full_gc', default='300', required=False, type=int, \ | |
help="If some nodes have full gc more than this, fail the test") | |
l = parser.parse_args() | |
es_host = l.es_host | |
# get ip of eth0, if es_host is not given | |
if es_host is None: | |
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) | |
s.connect(("8.8.8.8", 80)) | |
es_host = s.getsockname()[0] | |
ret = True | |
try: | |
ret = check_es_gc_count(es_host, l.es_port, l.max_full_gc) | |
except Exception as e: | |
print("Unexpected error:%s, %s" % (sys.exc_info()[0], e)) | |
sys.exit(1) | |
if ret is False: sys.exit(1) | |
## File: check_es_gc_count.py ends |
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