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我想編寫下面的Python腳本作爲Amazon lambda函數,該腳本將RabbitMQ指標發佈到Amazon cloudwatch,我嘗試了幾次並嘗試獲取rabbitmq深度,但是我的Lambda函數未能將度量指標發佈到cloudwatch。如何將Python腳本編寫爲Amazon Lambda函數?
from __future__ import with_statement, print_function
from pyrabbit.api import Client
import boto3
import os
host = ""
username = ""
password = ""
vhost = ""
namespace = ""
def get_queue_depths(host, username, password, vhost):
cl = Client(host, username, password)
if not cl.is_alive():
raise Exception("Failed to connect to rabbitmq")
depths = {}
queues = [q['name'] for q in cl.get_queues(vhost=vhost)]
for queue in queues:
if queue == "aliveness-test":
continue
if 'celery' in queue:
continue
depths[queue] = cl.get_queue_depth(vhost, queue)
return depths
def publish_queue_depth_to_cloudwatch(cwc, queue_name, depth, namespace):
float(depth)
cwc = boto3.client('cloudwatch',region_name="us-east-1")
response = client.put_metric_data(
Namespace=namespace,
MetricData=[ { 'MetricName': queue_name, 'Value': depth, 'Unit': 'Count' } ]
)
print("Putting metric namespace=%s name=%s unit=Count value=%f" %
(namespace, queue_name, depth))
def publish_depths_to_cloudwatch(depths, namespace):
for queue in depths:
publish_queue_depth_to_cloudwatch(cwc, queue, depths[queue], namespace)
def get_queue_depths_and_publish_to_cloudwatch(host, username, password, vhost, namespace):
depths = get_queue_depths(host, username, password, vhost)
publish_depths_to_cloudwatch(depths, namespace)
if __name__ == "__main__":
while True:
get_queue_depths_and_publish_to_cloudwatch(host, username, password, vhost, namespace)
中所暗示的那麼具體問題是關於從您的Lambda函數發佈到CloudWatch的具體問題?當Lambda函數的CloudWatch日誌無法將度量標準發佈到CloudWatch時,錯誤消息是什麼? Lambda函數是在VPC的內部還是外部運行?您是否已將適當的IAM角色分配給允許其將度量標準發佈到CloudWatch的函數? –
以及我的lambda函數設法獲取rabbitmq深度,我可以在日誌中看到它們,但是當涉及到發佈到cloudwatch時,它會失敗並以超時退出,函數在VPC中運行,並且是的,我將正確的IAM角色分配給功能 –
如果它正在VPC中運行,那麼您將不得不向VPC添加NAT網關,以便Lambda函數能夠訪問VPC之外的任何內容,包括AWS資源(如CloudWatch)。 –