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1answer
14 views

Haproxy http response timeout check

We use haproxy as http load balancer. Sometimes one of our servers stop responding while accepting http connection requests. So stats page displays servers as green "accessible" but our nagios server ...
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0answers
18 views

Where are the Google Health check logs

I am running a GCE instance and on it I have a Kubernetes cluster running. An HTTP Load Balancer is also configured to probe the health of the a Kubernetes service running on this instance. But I ...
0
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1answer
50 views

AWS ELB health check fails on LDAP authentication

I am running a Docker container through ECS. The container runs an Apache server hosting a simple web application. However, the server requires LDAP authentication to access the page. I am using a ...
1
vote
1answer
106 views

AWS ELB health check when using nginx and TCP

I have an elasticbeanstalk environment that uses nginx as a frontend server for a node.js application. The environment uses an elastic load balancer configured to accept connections on TCP:80/SSL:...
1
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0answers
80 views

NAP clients are evaluated as non NAP-capable

The setup: Active Directory domain, Remote Desktop Gateway server, NPS/NAP server (all Windows Server 2008 R2) and a few Windows 7 clients. The RDG and NPS are set up and running with all Connection ...
2
votes
3answers
135 views

How to make HAProxy wait for successful health check before bringing server out of maintenance mode

I am using HAProxy socket communication to put my backend into maintenance mode before bringing the web server down for maintenance via this command: echo "disable server cluster-01/app-01-4" | sudo ...
1
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1answer
268 views

HAProxy check does not check content on IIS

I am new to HAproxy and I have read the docs googled every possible phrase I could think of but I cannot get haproxy to read the content my test page returns. Here's the setup: Single arm config - ...
0
votes
2answers
85 views

Unknown Amazon Route 53 health checks create too much traffic. How to stop them?

We have just deployed a new asp.net site on IIS server. Now we started receiving a lot of requests with a header Amazon+Route+53+Health+Check+Service;+ref:<code>;+report+http://amzn.to/1vsZADi ...
0
votes
1answer
460 views

AWS Elastic Load Balancer HTTP health check ping not reaching Rails application server

I have just inherited a Ruby + Rails application running on AWS Elastic Beanstalk, and it is currently using TCP for the Elastic Load Balancer health check. I wish to switch to HTTP, and actually hit ...
0
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1answer
312 views

How to health check hosts over HTTPS behind the load-balancer?

I have NGINX serving my site over HTTPS on EC2 hosts behind Elastic Load Balancer. I need to set up a proper health-check in ELB. However, I cannot use https://www.example.com because I need to health-...
0
votes
1answer
617 views

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-...
0
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1answer
697 views

HTTPS health monitoring on rackspace cloud load balancer

I was using rackspace cloud load balancer to switch between two of my nodes. It was basically a active-passive setup in which the switch would take place in case primary node fails the http health ...
3
votes
2answers
1k views

How to set up ELB health checks with multiple applications running on each EC2 instance?

At AWS we'd like to to use ELBs to load balance EC2 instances which host multiple applications. Ideally we'd like to have a health check for application. However, AWS Elastic Load Balancers currently ...
1
vote
1answer
142 views

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 ...
0
votes
1answer
686 views

what are the best ways to check on the health of a debian based server [closed]

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 ...
3
votes
2answers
2k views

Varnish configure a backend to have multiple probes?

Is it possible in Varnish 3 to configure a backend to have multiple probes? I have multiple varnish servers and multiple backend servers running Drupal. I've configured a basic 1 second interval ...
0
votes
1answer
5k views

How can I check Windows Server 2008 health status and use them with Python

I am working on a project for which I need to create a Python class which can determine underlying OS on which it is running and performs a sequence of checks if OS is found to be Windows Server 2003/...
3
votes
3answers
4k views

What to check during a periodic system health check

I have been tasked with preparing a list of checks to do as a part of a weekly system health check routine which my team is supposed to do. The problem is neither I nor any of my colleagues have ever ...
5
votes
2answers
7k views

How should I configure my ELB health check when using NameVirtualHosts and redirecting to www?

My ELB keeps taking my instances out of service, because the HTTP health check is failing. We have a DNS wildcard, and redirect everything to www: vhost.conf: ServerName www.example.com ServerAlias ...
0
votes
1answer
945 views

Is there a way to tell keepalived to make a health check immediately?

We have a high-availability setup in which lvs distributes requests between a set of backend servers ('realservers' in LVS-speak). LVS is managed by keepalived. Each realserver exposes a health check ...
0
votes
2answers
753 views

nagios check_crash || how to detect when a server has crashed and rebooted?

Thanks to the Intel TCO watchdog some servers i manage now reboot on a kernel or hardware crash and init scripts are now even 'rebootsafe'. Sadly this means that i no longer get a notification from ...
3
votes
5answers
8k views

How Amazon ELB Health check Works?

I am having problems configuring ELB for my servers. I start 2 micro instances with the exact same conf and try to do Load Balancing. However they never pass the health check (HTTP port 80 path:"/"). ...
2
votes
2answers
2k views

How to monitor and measure the health of Compact Flash cards used as server storage?

Context The company sells access to a sort of cash register web application. Access to the application is given through a VPN. The VPN entrypoint for the clients is a Soekris board running Voyage ...
3
votes
2answers
815 views

MySQL Slave Health Check

I am working on a project like creating database config on fly , got an array of read replicas for mysql instance and keeping one open connection to each and keeping their statics in that service so ...
0
votes
1answer
2k views

Backend health checking with Apache 2.2 (possible?)

We have a couple servers running Apache 2.2 and Weblogic instances at work. I am wondering if Apache with mod_proxy or mod_weblogic can do backend health checking with focus on response times? Can ...
0
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3answers
10k views

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 ...
1
vote
4answers
263 views

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 ...