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Questions tagged [healthcheck]

100 questions
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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:;+report+http://amzn.to/1vsZADi We haven't setup any health checks and we are not using…
mai
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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 my application. To do this I creat an endpoint on…
lpil
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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 monitoring. Everthing was working fine till I was…
Ankit Khedekar
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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 2003/2008. Currently my check includes following…
avimehenwal
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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 resource over HTTP (basically, if you say GET…
Tom Anderson
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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 nagios when a machine has crashed because the…
ZaphodB
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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 Apache 2.2 switch to another instance when response…
user55483
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Apache httpd: mod_proxy_hcheck URL based HTTP basic authentication

I am trying to use mode_proxy_hcheck to do health checks and failover for an application that requires HTTP Basic authentication. BalancerMember http://username:password@hostname1 hcmethod=GET hcexpr=expression…
theeGwandaru
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Can you get the grep command to EXIT 1 if query successful?

I'm trying to formulate a docker healthcheck that restarts the container if the word FATAL in found in a certain log file. Something similar to this except with grep. test: ["CMD-SHELL", "curl -f http://localhost || exit 1"] Something like: test:…
Frank Barcenas
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Keepalived: Transitioning to backup node not happening when check script on master server finds service is down for an applicaiton

I am trying to configure keepalived in such a way that if any application or service running on master node fails, keepalived should consider it as fault and backup node should act as master and take over the floating IP from master node. I have…
Muhammad Munir
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docker health check for disk space not working as intended

I've got an nginx container which ends up with a full disk after it's been running for about 10 days. So if a new version of the app isn't released, errors start to occur that look like; 2022/01/15 22:45:04 [crit] 13#13: *406812 mkdir()…
markwalker_
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How to health check a distributed NAT gateway?

I am using Google Cloud Platform and have manually setup a NAT gateway to peer two networks A and B so that workloads in network A have a default gateway which routes packets into network B. The gateway is implemented as a managed instance group…
dippynark
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Is there any monitoring tools to create scenarios/dependencies check?

My team and I got the project to test a new monitoring solution that allow us to : Perform classical monitoring checks (through SNMP, ping, sensor status, vendor librairies etc...) Perform checks in chain or healthchecks, like a scenario, for…
inframan
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Google cloud loadbalancer health checks cause a load on servers

I have configured a load balancer https on google cloud with a health check having following parameters: healthcheck : Interval : 30 seconds Timeout : 15 seconds Healthy threshold: 1 success Unhealthy threshold : 2 consecutive failures I have…
Julie
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Using SSH in check of Consul

I have a server with a dockerized Consul Agent (CA). In this CA, I want to run a script from the host who checks how many disk space left in a service check. For this, I created a service in the CA : { "service": { "name":…
M4kn4sh
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