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Questions tagged [load-balancing]

Load balancing deal with the techniques involved on using multiple systems to deal with high demands, balancing the load between those multiple systems. Questions deal with networking and server load balancing, using dedicated hardware or not.

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AWS application load balancer not registering targets for Kubernetes EKS node target group

I have an EKS cluster with public/private access on a VPC with public and private subnets. I've setup my ALB in the public subnets on port 80, internet-facing and ip and installed the AWS controller ...
Alex Radwan's user avatar
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18 views

IIS10 HTTP Error 503 Event 5002 Application pool disabled automatically Windows Server 2019

I have been trying to solve a problem in IIS for several days that occurs on dates where my requests are raised. I have an AWS-EC2 on an IIS10, which since a certain date has shown me several errors ...
Dvex's user avatar
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0 answers
13 views

Not able to add a new server to NLB Cluster in Windows 2022

I setup an NLB Cluster with ARR and IIS Web Farm, here is my Setup: Primary Site - 192.168.10.X (Primary Network) 192.168.200.X (Cluster Heartbeat) 2x NLB Servers 2x Web Servers for the server farm ...
Sam's user avatar
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0 answers
26 views

In Cloudflare, do I need to remove my A records for all my www servers if I already configured Load Balancing?

I have configured Load balancing in Cloudflare for three servers. Should I delete or keep the "A records" of my three servers serviced by my load balancer? I'm afraid the three A records ...
Sophia's user avatar
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0 votes
2 answers
98 views

How to implement an active health check with web load balancer

I need to have a web load balancer with active health check. This frontend machine should handle https certificate, a bit of caching and, most important, proxy to backend server only if they are ...
Tobia's user avatar
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1 answer
27 views

L3-DSR real server iptables/conntrack configuration

I'm doing L3-DSR setup with a custom LB. The custom LB does DNAT with DSCP setting, though DSCP setting is not irrelevant in this question. I made a lab with some network namespaces VIP: 10.10.10.1 ...
Chul-Woong Yang's user avatar
0 votes
1 answer
47 views

How to setup external load balancing to my kubernetes cluster securely?

We have for a period of time just pointed our dns to one of the nodes in our cluster. That node has then load balanced internally to the correct node and application. Something like this: The problem ...
Viktor Eriksson's user avatar
3 votes
1 answer
102 views

Load balancer with HAProxy

I'm trying to set up a load balancer with HAProxy, but I'm having trouble understanding how to configure it. Can someone provide an example configuration?
Super22's user avatar
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0 answers
17 views

How to pass output variables to new instance?

My goal is to create an HTTP balancer from 2 nodes using terraform, the problem appears when I want to add the received public IP addresses of the balancer and application server to the balancer ...
Kirill K's user avatar
0 votes
1 answer
245 views

How to put multiple VMs behind a single *private* IP address on Azure?

I'm working on creating a Blue/Green deployment for a product in Azure but I'm running into a problem regarding outbound traffic to an on-premisses database. Our initial idea can be seen in this ...
Leonardo Tavares's user avatar
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0 answers
29 views

Redundant serving of web application without loadbalancer?

I want to run a web application inside a mobile app using WebView. The web application uses IndexedDB for saving various important values. I like to make the web application very available (redundant)....
Kukulkan's user avatar
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0 answers
33 views

Client --> AWS ALB --> AWS Lambda: connection lost somewhere, how to identify?

The client made an API request. Client --> ALB --> Lambda Lambda worked fine with a response. Lambda duration is only about 3 seconds. The client encountered timeout at 15th second. The ALB ...
Zhuang Paulus's user avatar
0 votes
0 answers
36 views

Load balance TCP stream traffic based on delimiter

I am looking for clarification if either Nginx or HAProxy are capable of load balancing TCP stream content based on some delimiters in the stream. The TCP connection is long-lived and is being used ...
Sergei I.'s user avatar
0 votes
1 answer
31 views

Unicast-mode network load balancing on Hyper-V virtual servers

I have been struggling with an issue and I hope that someone can help me. I don't know whether Hyper-V or my physical switch is misconfigured (or both are misconfigured). I have two virtual servers, ...
coprolaliant's user avatar
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0 answers
19 views

How to find root cause for myapge.com didn't send any data?

I have deployed my app on REDHAT server,behind LB in public cloud. SSL termination should be done on LB. I got The page is not working myapge.com didn't send any data I tried curl 10.111.123.6:2273 ...
MikiBelavista's user avatar
2 votes
1 answer
46 views

Kemp Load Balancer with SSL Acceleration - SSL on servers, too?

We have three webservers on a local network that I have fronted with a Kemp Load Balancer. Currently, all three have an SSL certificate on them. Everything works as it should. However, I wanted to ...
SQL ALLSTAR's user avatar
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0 answers
81 views

Internet Facing load balancer infront of 2 private instances

I am trying to setup 2 web instances in a private network and put an internet facing load balancer infront of my two instances. This is what i want to achieve: The 2 private instance should be able ...
Mervin Hemaraju's user avatar
0 votes
1 answer
141 views

Load Balance two servers with a Flask app with CertBot certificate and a Domain Name

I have two servers, let's call them ServerA and ServerB. I bought a domain on NameCheap let's call it example.com Each server has docker containers (Flask Web Apps) running on it on different ports. ...
Mervin Hemaraju's user avatar
0 votes
0 answers
51 views

Can the kube-vip load balancing service implement jumps after a kubernetes node is notReady?

I'm new to kubernetes and I'm learning about high availability clustering, I'm using kube-vip for load balancing in the form of static pods. # kubeadm version kubeadm version: &version.Info{Major:&...
HuaJFrame's user avatar
1 vote
1 answer
115 views

DNS Configuration for Azure Load Balancer with Public IP

I'm configuring a load balancer in Azure to distribute traffic to backend VMs for my web application (most likely just a singular VM actually). I'm a bit confused about the DNS setup. Here's what I ...
Michael Brown's user avatar
0 votes
1 answer
77 views

HAproxy with Keepalived not behaving as expected

I have two servers in a public subnet with both public and private IPs. I want to configure HAproxy with keepalived and make server1 act as the master and server2 as backup. If server1 goes down, I ...
Mervin Hemaraju's user avatar
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0 answers
77 views

K8s - not working L2 Advertising of Metallb

I'm installing 1 node k8s cluster and can't reach metallb IP address from same subnet. CRI = Containerd 1.6 CNI = Flannel. control-plane taint is disabled Pod CIDR = 10.244.0.0/16 Cluster CIDR = ...
SeanCooper's user avatar
2 votes
2 answers
313 views

K3S: understanding the network model and applying TLS certificates

In order to learn a bit more about K8S I started running a single server/node K3S cluster as a home lab. But I believe I've reached an impasse on my understanding of the network model, maybe specific ...
Jo Colina's user avatar
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0 answers
37 views

How do i nessus scan to the EC2 server which is behind load balancer

I have a EC2 server which is running behind a load balancer. Load balancer URL has been mapped as A record in route53. Audit team is asking for the public ip address. How do i give them? ALB URL even ...
Ravi Teja RVN's user avatar
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0 answers
64 views

How to set HTTP header globally on a HTTPS Load Balancer?

I'm migrating from Kubernetes to Cloud Run. Currently, Kubernetes Ingress allows me to use Nginx Ingress Controller annotations to set headers globally for all subdmains in a single configuration like ...
Mauricio's user avatar
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0 answers
118 views

Proxmox, iptables connection refused on port 443 from different nodes if forward to LoadBalancer

having some problems with port forwarding on dedicated machine running Proxmox. I have create an LXC-Container for LoadBalancing and forward all incomming request on port 80 and 443 to it. If I am ...
xtrose Media Studio's user avatar
3 votes
2 answers
629 views

ZFS: Handling massive no. of concurrent RW operations and failover

I have a single ZFS/Linux instance with a file that can grow to those crazy sizes supported by ZFS. A large number of concurrent users need to read/write from/to this file over the public inter net. ...
Harry's user avatar
  • 463
2 votes
0 answers
214 views

Safest way to configure `max_fails` in Nginx reverse proxy

We have nginx as a reverse proxy, load balancing across 2 application servers. These application servers were defined in upstream blocks like so: upstream app_backends { server 1.1.1.1:...
Robin Winslow's user avatar
0 votes
1 answer
27 views

Azure Load balancer traffic distribution

I have a standard load balancer deployed with a backend pool consisting of two servers, inbound rule - 443. We have session persistence selected with Client IP. I want to know if by doing this all the ...
Dope script's user avatar
0 votes
1 answer
468 views

How to configure HAproxy to a different backend based on path?

The problem is that, I have haproxy configured for multiple domains with backends respectively. The intended behaviour is to redirect a specific request such as myfirstdomain.com/alerts to backend2 ...
Jk843's user avatar
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2 votes
3 answers
100 views

Setting up a cluster with workload distribution

I want to setup a server cluster which can keep by servers as busy as possible while still giving fair compute time to everyone. I have setup a basic Kubernetes setup but the issue is that if some ...
starhawk's user avatar
3 votes
0 answers
83 views

Spread IPsec decryption over multiple CPUs

All IPsec traffic being decrypted is processed on a single CPU, despite having multiple IPsec tunnels (SAs.) How can I get the load shared across multiple CPUs? I'm running Strongswan IPsec on Ubuntu ...
Jeff Learman's user avatar
0 votes
0 answers
35 views

AWS: access private API from public web application

I have: Private API running on an ECS cluster behind an internal load balancer. This API is used by other services inside the VPC. A public Next.js web application. What I need: Give private API ...
revy's user avatar
  • 101
1 vote
1 answer
283 views

Traffic distribution inside an GCP instance group

I have a regional instance group with 2 instances serving on port 8000, no autoscaling enabled. This instance group is the backend of a Global external application load balancer. The web server on the ...
yellowhat's user avatar
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0 votes
0 answers
108 views

LDAP log spam - TCP ERROR Bad Ber Tag or uncleanly closed connection - B1

I have a loadbalancer infront of my ldap servers. However, the healthchecks from the loadbalancer is spamming my dirsrv logs with following: { "date": "[XXXXXXXXXXX] ", "...
N. J's user avatar
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0 votes
0 answers
21 views

Health Check Failures and 502 Errors with HAProxy and Golang Fiber Instances

I have a setup where Server A acts as the client, communicating with Server B through HAProxy. Server B runs four similar Golang Fiber instances, each with Prefork enabled on an EC2 t3xlarge instance. ...
realnsleo's user avatar
  • 117
0 votes
1 answer
225 views

Load Balancer is not accessible outside cluster

I have setup 3 master and 6 worker nodes using the same IP segment, 172.26.10.XX. For load balancer services, I'm using Kube-Vip for load balancer with configuration namespace specifics as below: - ...
amundead's user avatar
0 votes
0 answers
101 views

Global Server Load Balancing for OpenVPN over OpenVPN with DSR

Ok, so...I am in no sense a pro when it comes to networks, load balancing, tunneling or VPN connections BUT I tried a few things to get this theoretical concept to work - obviously without success. ...
MathiveProblem's user avatar
0 votes
0 answers
154 views

Simple way to configure GCP custom domain for regional (Standard tier) load balancer instead of global (Premium)?

After migrating from a basic AppEngine website to serving it from Cloud Run, I've gone from paying $0.01 per month to $0.60 per day. That seems to be because I've switched from regional App Engine ...
Mu Mind's user avatar
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0 votes
2 answers
98 views

Way to keep over 65k TCP connect to a server

As a programmer and a newcomer to network and infrastructure, I've developed a server program capable of handling over 100,000 connections concurrently. During testing in a local network with 20,000 ...
Itsme's user avatar
  • 3
0 votes
0 answers
46 views

Deploying Multi-Cluster/Multi-Region Gateway AND have redundant stateful services with GKE Autopilot?

I want two clusters to each be in a different region so I have basic region redundancy. Some of the services I want to run are stateful (which includes keeping track of user sessions). I am not ...
ift-436t's user avatar
0 votes
0 answers
119 views

High availability cluster bandwidth bottleneck

I want to setup a service with a lot of file transfer for thousands of users. For now, my idea is to go with k8s + HAProxy with 3 masters (with VIP) and as many slaves as needed. So basically: ...
ange's user avatar
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-1 votes
1 answer
68 views

How does real server, direct return server (DRS), reply to client if a load balancer (LB) uses port address translation (PAT)?

Direct Return Server overview: The DRS allows real servers to directly reply to a client without going through load balancer (LB). The LB ip (VIP) is configured as a loopback (localhost) ip for the ...
Tom's user avatar
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0 votes
0 answers
55 views

Kubernetes Load Balancing with Redis Cluster and microservices

I have the following scenario: N kubernetes Nodes A redis cluster with N instances, each node has a single instance There are requests coming into the nodes in a round-robin format After the requests, ...
me_the_bo's user avatar
0 votes
0 answers
86 views

Nginx unresponsive under load

After switching from haproxy to nginx, one of my reverse proxies has a problem. At a certain number of connections the server stops accepting new requests (closed by timeout). However, if you connect ...
horhe's user avatar
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0 votes
0 answers
118 views

How to apply an ssl certificate to a Load Balancer Listener using OCI Certificates

I'm currently working on running a small personal server using OKE and a load balancer. My problem is as follows I attached the OCI certificate to the load balancer listener, but it doesn't work, ...
JJoRi's user avatar
  • 1
0 votes
1 answer
58 views

HaProxy custom ports

I need to load balancing one of our customers application portal. The flow works as follow: The enduser reach the portal through the URL example.net:3000/login page; The enduser will choose one of ...
FriendlyPotat95's user avatar
0 votes
2 answers
206 views

is Cloud loadbalancer necessary?

I currently have a Kubernetes cluster in the cloud AKS, and I'm using nginx-ingress to load balance, define routing rules and manage how traffic gets to my services. I see that many people are using ...
youngtoken's user avatar
0 votes
1 answer
276 views

HTTPS global load balancer does not seem to work for a subdomain in GCP

I am exploring how I can create an application on Cloud Run and then use a Global HTTPs Classic load balancer to manage traffic across different Cloud Run instances. I have create a simple cloud run ...
sidharth vijayakumar's user avatar
0 votes
1 answer
79 views

Does geo-load balancing improve first load time?

I have users very wide-spread through the world, and I have at the moment 3 servers deployed on different continents, serving different language versions of my site. However, English is accessed world ...
Barney Szabolcs's user avatar

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