docker_haproxy | Firehose router using HAProxy and confd | Load Balancing library
kandi X-RAY | docker_haproxy Summary
kandi X-RAY | docker_haproxy Summary
Firehose router using HAProxy and confd
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Trending Discussions on Load Balancing
QUESTION
I would like to configure Load Balancing in docker-compose.yml file for NiFi cluster deployed via Docker containers. Current docker-compose parameters for LB are as follows (for each of three NiFi nodes):
...ANSWER
Answered 2022-Feb-22 at 12:08I had opened load balance port
on my docker file. Also I had to specify hostname
for each node's compose file
here is my docker file for basic clustering
QUESTION
I know that the spark-cassandra connector comes with its own default loadbalancing policy implementation(DefaultLoadBalancingPolicy). How can I go about implementing my own custom LoadBalancing class? I want to have the application use the WhiteListRoundRobin policy. What steps would I need to take? I'm still a newbie in working with spark and Cassandra and I would appreciate any guidance in this. Thanks
...ANSWER
Answered 2022-Feb-20 at 08:25You can look into implementation of LocalNodeFirstLoadBalancingPolicy - basically you need to create (if it doesn't exist) a class inherited from LoadBalancingPolicy
, and implement your required logic for load balancing.
Then you need to create a class implementing CassandraConnectionFactory
that will configure Cassandra session with required load balancing implementation. The simplest way is to take the code of DefaultConnectionFactory, but instead of using LocalNodeFirstLoadBalancingPolicy
, specify your load balancing class.
And then you specify that connection factory class name in the spark.cassandra.connection.factory
configuration property.
QUESTION
I have an app launched on AWS ELB at the moment. AWS automatically enables an application load balancer which is a significant cost driver to my application. I only have 20 users at the moment, so the load on my application is quite low. When is a good time to enable load balancing?
...ANSWER
Answered 2022-Feb-13 at 15:15Use single instance environment in Elastic Beanstalk if you don't want to use load balancer yet.
Quote:
Single-instance environment
A single-instance environment contains one Amazon EC2 instance with an Elastic IP address. A single-instance environment doesn't have a load balancer, which can help you reduce costs compared to a load-balanced, scalable environment. Although a single-instance environment does use the Amazon EC2 Auto Scaling service, settings for the minimum number of instances, maximum number of instances, and desired capacity are all set to 1. Consequently, new instances are not started to accommodate increasing load on your application.
Use a single-instance environment if you expect your production application to have low traffic or if you are doing remote development. If you're not sure which environment type to select, you can pick one and, if required, you can switch the environment type later. For more information, see Changing environment type.
QUESTION
I'm trying to protect my Firebase Cloud Functions with Cloud Armor so I'm trying to setup Load Balancer. I created a Backend and added a Serverless Network Endpoint Group. In this panel, I can select only one cloud function but I have more than one cloud function so I have to use other option which is URL masking.
I'm following this guide: https://cloud.google.com/load-balancing/docs/https/setting-up-https-serverless#using-url-mask
Problem is:
When I try URL masking like this:
...ANSWER
Answered 2022-Feb-02 at 11:58As described in the documentation, if the pattern is /
(that is your case us-central1-myproject-a123b.cloudfunctions.net/
), you have to set /
in the url mask
QUESTION
We are using load balancer as default on our aws server. But we want to host our subdomain on another host. Is it possible using Route 53 or Load Balancer to redirect or pointed the subdomain to another host?
...ANSWER
Answered 2022-Jan-31 at 12:05Yes you can do this using route 53 Use as I say,
Add this our route 53
yoursubdomain.maindomain.com A simple your-host-IP
QUESTION
Is there any way to limit the access to Kubernetes Service of type LoadBalancer from outside the cluster?
I would like to expose my database's pod to the Internet using the LoadBalancer service that would be accessible only for my external IP address.
My Kubernetes cluster runs on GKE.
...ANSWER
Answered 2022-Jan-24 at 11:14Yes, you can achieve that on Kubernetes level with a native Kubernetes Network Policy
. There you can limit the Ingress traffic to your Kubernetes Service by specifying policies for the Ingress
type.
An example could be:
QUESTION
I have 3 containers deployed on ecs and traffic is distributed by an application load balancer, swagger on this individual containers can be accessed via e.g 52.XX.XXX.XXX/swagger.
I need the services to be accessed via for e.g:
...ANSWER
Answered 2022-Jan-20 at 10:58You can't achieve that with AWS Load Balancer alone. AWS LB doesn't re-route traffic based on paths. They just forwards the incoming traffic to origin.
Your service should be accessible via 52.XX.XXX.XXX/user/swagger
52.XX.XXX.XXX/posts/swagger
etc. in order for Load Balancer to forward it. You can't forward (or re-route) your traffic from Load Balancer like this:
QUESTION
I have the following basic architecture:
For reasons I don't want to get into, I want to allow the client to fetch data from either server if they so choose. If they don't care then the load balancer will decide for them.
Is there a best practice for designing the API request?
I've come up with a few options:
- Add an optional query string parameter:
ANSWER
Answered 2021-Dec-15 at 16:48Just create the public domain name for the servers that you allow client to call it directly and then configure the DNS such that it can route the request to them or to the load balancer depending on the domain name of the HTTP request.
For example, you may have the following domain names for the servers:
api.example.com
for the load balancerapi-server1.example.com
for Server1api-server2.example.com
for Server2
Then ask the clients to choose which servers to use by configuring the corresponding domain name in the API call.
One of the real-life example is Mixpanel API. You can see that they have two kind of the servers to let the API client to choose which to use through different domain names.
QUESTION
I am working on a project in Laravel 8 which I am now testing the deployment on production servers. I have set up 2 Digital Ocean Droplets that are behind a load balancer with Sticky Sessions enabled. I am attempting to login via a SPA app with a separate Laravel API so the middleware is configured for the api routes to be stateful API and perform CSRF validation. This works perfectly fine when I just hit a single droplet and bypass the load balancer but as soon as the load balancer is in use, I always receive a 419 CSRF Token mismatch.
Everything I found on Google says that the session needs to be shared between servers, but I don't believe this is the case in this scenario. I have turned on sticky session with a cookie called DO-LB in the load balancer so all requests from the same session go to the same server, and I am tailing the Apache access log on both servers, and I can see all requests such as the get-csrf and the auth route (using Sanctum) both hit the same server so would I would still be getting a token mismatch.
I am also using the cookie session driver.
UPDATE
I've found something a little strange, if I point my DNS to a singled droplet I see the X-XSRF-TOKEN is sent as a request header, but if I change DNS to point to the load balancer then X-xSRF-TOKEN is not sent as a request header. I am using Axios to send the request but I can't see how a load balancer can affect Axios
UPDATE 2
It looks like when I run it locally XSRF-TOKEN is not an HttpOnly cookie but when running it on production the XSRF-TOKEN is flagged as HttpOnly which from what I've read means its inaccessible from Javascript hence why Axios isn't sending it. I seem to have confirmed this by doing Cookies.get("XSRF-TOKEN") and printing the result, locally it prints the token to the console, but in production its undefined.
UPDATE 3
I updated my Apache configuration to override the headers as a test to remove the HttpOnly flag which seems to have done the trick, and I can now see when I log in, Chrome sends an X-XSRF-TOKEN in the request even though I still get a CSRF Token Mismatch.
I've compared the string in the chrome cookie store with what is being sent in the X-XSRF-TOKEN and they both match so I don't understand why Laravel keeps returning me a mismatch and I am at a complete loss.
...ANSWER
Answered 2021-Dec-05 at 21:06I think I've figured this out, if it can be migrated to server fault then please do but I thought as figured out it makes to say what it was instead of just deleting.
I was using cloudflare and made the error of using self signed certificate between DO droplet and cloudflare and gave this cert to the load balancer. Although no errors were thrown by DO, in the Apache log I noticed that although the web site load, when an API request was made I noticed the apache error log Server name not provided via TLS extension (using default/first virtual host)
. Not sure if this is the actual cause but made me think if the issue was caused by the self signed certificate.
I generated a new origin server from Cloudflare which means it has a trusted CA and then gave that to DO load balancer and the problem went away.
QUESTION
I'm trying to deploy an Application Load Balancer to AWS using Terraform's kubernetes_ingress
resource:
I'm using aws-load-balancer-controller which I've installed using helm_release
resource to my cluster.
Now I'm trying to deploy a deployment
with a service
and ingress
.
This is how my service
looks like:
ANSWER
Answered 2021-Nov-25 at 16:42Try using the alb.ingress.kubernetes.io/scheme: internet-facing
annotation.
You find a list of all available annotations here: https://kubernetes-sigs.github.io/aws-load-balancer-controller/v2.2/guide/ingress/annotations/
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