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Questions tagged [healthcheck]

108 questions
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EC2 Failing Load Balancer Health Check

One of my projects is an internal web app which we are putting behind a load balancer. As of now there is only one ec2 (will be more in production) and the load balancer is not able to reach the ec2-Instance. The load balancer is setup to accept…
Colin Murphy
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Is there any CPU health testing software?

Is there any software that would test the reliability of a CPU? Like, check how all the instructions are working, verify that cache is not damaged, check for known CPU bugs, etc. I've got a machine in which I suspect that the CPU might be failing,…
Vilx-
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A practical way to do healthcheck for a new server?

I am currently trying to do healthcheck for a new server in data center as a first QA before using by any application side. "What is the practical way and tools to check that the server is fine to use?" About the tools, I am looking at memtest86 to…
A-letubby
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what are the best ways to check on the health of a debian based server

Hello I been thinking about how to do a regular check on a system to assess the state of health of the systems. I am really turning into a system admin gradually and I already manage about 10 ubuntu servers. I have set up zabbix already but I…
black sensei
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Monitoring a one-off service

We do not have any sort of proper server monitoring solution in place (a situation I'd like to rectify this summer), but I've got one service in particular that I'd like to monitor. [Our current monitoring system, waiting for clients to call in…
Clinton Blackmore
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Instance refresh: "insufficient data to evaluate its health with Amazon EC2"

The instance refreshes for my autoscaling group are taking a very long time due to instances having "insufficient data to evaluate its health with Amazon EC2." However, the instances are passing EC2 health checks for 5+ minutes. There is no other…
Paul Draper
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How can I make sure that AWS does not kill tasks before auto scaling kicks in?

I work on an AWS Fargate service which has a health check configured as well as an autoscaling policy set. The application needs about 30 - 45 seconds to start. The application does receive traffic spikes now and then. The autoscaling policy will…
sbrattla
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Programmatically (SH Script) check which server is traffic routed too by HA Proxy

I have 2 HA Proxy servers with Keepalived configured with them, and have 2 backend servers to which traffic is routed by HA Proxy, am writing a shell script that will sync a directory between backend servers based on which server is currently set as…
MoonLight
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How to perform healthcheck on NFS clients connectivity from the NFS-Server?

I have three Debian 11 servers let's call them nfs-server which is the NFS server, nfs1, and nfs2 which are the NFS clients. I want to perform some sort of health check from the NFS server to ensure client connectivity and detect if a client is…
Sinux
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AWS NLB HTTPs health check using mTLS

Is it possible to do a AWS NLB HTTPs health check using mTLS? I tried setting up a TLS listener, loaded my cert, setup a TLS target group with HTTPs health check, but the health checks are still failing despite the cert loaded on the NLB.
RustyShackleford
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ECS restarts due to health_check failure when multiple other requests are slow to return

We noticed that our ECS Fargate backend services restart due to a health check response timeout: (service our-site-com-stack-BackendApiServiceStack...) (port 8000) is unhealthy in (target-group…
Zev
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AWS autoscaling and ELB, use different health checking mechanism

I need some advice about AWS autoscaling, loadbalancers and health checks: is it possible to distinguish two health checking mechanism, one is when to send or do not send traffic to an instance (but do not terminate/replace it), and the another is…
zsolt.k
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GCP HTTPS LB health check is working but no real traffic getting in, what could explain this?

If the health check is working and the backend service is marked as green (i.e. I do have a firewall rule for the LB hc/traffic), would could explain that no real traffic can get in (I'm getting a 502 "failed to connect to backend" in the LB…
Rhangaun
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Managed instance group autohealing without external IP

I can not seem to find any information on this topic, auto-healing health checks is performed by instances in a google external IP range of 130.211.0.0/22, 35.191.0.0/16. I'm using a Cloud NAT setup and my instance group contains instances without…
JazzCat
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App Engine health check not working

This is my app.yaml runtime: go112 instance_class: B1 manual_scaling: instances: 1 liveness_check: path: "/health" check_interval_sec: 5 timeout_sec: 1 failure_threshold: 1 initial_delay_sec: 10 App is not receiving health checks.…
Jonas
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