I have GAE flexible this app.yaml:
# [START runtime]
runtime: python
env: flex
entrypoint: gunicorn -b :$PORT ******.wsgi
automatic_scaling:
min_num_instances: 2
max_num_instances: 2
beta_settings:
cloud_sql_instances: ******:europe-west6:*******
runtime_config:
python_version: 3
handlers:
- url: /.*
script: auto
secure: always
redirect_http_response_code: 301
# [END runtime]
[image: Screenshot 2022-05-14 130338.png]
After standard instance weekly restarting
<https://cloud.google.com/appengine/docs/flexible/custom-runtimes/build#application_shutdown>,
I've seen some internal errors in logs and 502 errors on POST requests:
{
"insertId": "2",
"jsonPayload": {...},
"timestamp": "2022-05-14T08:34:42.512018934Z",
"severity": "ERROR",
"logName": "projects/****/logs/
compute.googleapis.com%2Fshielded_vm_integrity",
"receiveTimestamp": "2022-05-14T08:34:44.518408254Z"
}
and
{
"insertId": "*******",
"jsonPayload": {
"remoteIp": "******",
"@type":
"type.googleapis.com/google.cloud.loadbalancing.type.LoadBalancerLogEntry",
"statusDetails":
"backend_connection_closed_before_data_sent_to_client"
},
"httpRequest": {
"requestMethod": "POST",
"requestUrl": "https://*********";,
"requestSize": "2208",
"status": 502,
"responseSize": "451",
"userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:100.0)
Gecko/20100101 Firefox/100.0",
"remoteIp": "*******",
"referer": "********",
"serverIp": "********"
},
"resource": {
"type": "http_load_balancer",
"labels": {
"url_map_name": "",
"target_proxy_name": "",
"zone": "global",
"project_id": "********",
"backend_service_name": "********",
"forwarding_rule_name": ""
}
},
"timestamp": "2022-05-14T08:36:28.064500Z",
"severity": "WARNING",
"logName": "projects/********/logs/requests",
"trace": "projects/********/traces/********",
"receiveTimestamp": "2022-05-14T08:36:28.882230792Z",
"spanId": "********"
}
Also I have some messages with
/readiness_check failReason:"null"
I've read Tuning NGINX behind Google Cloud Platform HTTP(S) Load Balancer
<https://blog.percy.io/tuning-nginx-behind-google-cloud-platform-http-s-load-balancer-305982ddb340#.6k2laoada>.
But as I understand it is related to GCE(not GAE).
For the current app it is VERY important to handle every request, so I
want to be confident with fixing it.
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