Questions tagged [round-robin]
The round-robin tag has no usage guidance.
65
questions
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0answers
19 views
Microsoft DNS multiple name servers for a domain behavior not documented
A delegated domain on a Microsoft DNS server that delegates a sub domain to external name servers. ex.
subdomain.domain.com
NS IP x
NS IP Y
The advanced tab shows server options and round robin ...
0
votes
0answers
59 views
What are the best practices for device-mapper multipath?
Background: We are setting up the new storage for an HPC Compute cluster for applied statistics, bioinformatics, and genomics. Contrary to our expectations, an active-active configuration did not ...
0
votes
1answer
113 views
How does Google return a different A record every time? [closed]
I used the DNS lookup tool too find the Name Server and A Records entries for www.google.com
Here is what it said
www.google.com results
ns2.google.com
IN 172.217.15.68
It showed a single A ...
0
votes
0answers
39 views
How to have clients' requests automatically dispatched to 10 different load-balancing machines, round-robin-style?
I know how to setup these solutions:
Let's say the website www.example.com has a single machine for it (IP 203.0.113.123), using a Linux + Apache server. It works if the bandwidth is not too high.
...
1
vote
4answers
204 views
Why is my Nginx Load balancer proxying to first server only?
I have a load balancer using Nginx from the Servers For Hackers tutorial site. This refers to two servers in a round robin setup. I have a self signed SSL certificate in place to test an http to ...
0
votes
1answer
218 views
Round-robin outgoing TCP requests between multiple Ethernet adapters on Windows
I have a Windows Server Standard with 3 Ethernet adapters. I am running a C# application that makes TCP connections to another server. Right now they are all made via the adapter that has a default ...
0
votes
2answers
430 views
pdns - using LUA records
Id very much like to do this but it doesn't seem to be enabled on my installation.
# rpm -qa | grep pdns
pdns-4.1.5-1pdns.el7.x86_64
pdns-recursor-4.1.7-1pdns.el7.x86_64
Ive tried both iterations in ...
0
votes
1answer
18 views
Bonding SWITCH XS (incoming packets)
I would like to bound 2x10Gb/s of a Linux server to receive/inbound more than 10Gb/s on a virtual interface send by a unique client. The client will probably send more than 10Gb/s (probably bonded ...
3
votes
2answers
2k views
Network bonding mode balance-rr / 802.3ad layer3+4 on Linux
What is the difference between balance-rr and 802.3ad with xmit_hash_policy set to layer3+4.
https://www.kernel.org/doc/Documentation/networking/bonding.txt
layer3+4: This algorithm is not fully 802....
0
votes
1answer
87 views
NetScaler prioritizing faster hosts in round robin
For a NetScaler load balancer running SSL passthrough, is there any aspect to the round robin load balancing algorithm that would direct more traffic to hosts that respond more quickly?
As a ...
0
votes
2answers
574 views
How does aws elastic route requests via round robin?
I am looking at graph which shows CPU load on EC2 instances. I spot that when for 1 EC2 CPU increases for 2 it decreases at same time. After some period (5 minutes) they changed that 1 decreases and 2 ...
0
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4answers
355 views
How to setup a Route 53 DNS record in front of three other records?
I have a zone in Route 53; let's call it example.com. I have three A records in that zone:
server1.example.com --> elastic_ip_1
server2.example.com --> elastic_ip_2
server3.example.com -->...
-1
votes
1answer
880 views
Iptables round-robin through multiple virtual network interfaces
I have a server with two main network interfaces and 5 virtual interfaces like this.
eth0 - 192.168.1.1
eth1 - 192.168.3.1
eth1:2 192.168.3.3
eth1:3 192.168.3.4
eth1:4 192.168.3.5
eth1:5 192.168.3.6
...
0
votes
1answer
10k views
round robin dns in windows server not working
Running Windows 2012 R2
Round Round enabled for my DNS zone (AD integrated)
Im either not understanding this or its not working.
I want to use round robin dns to resolve to a cluster of servers.
...
1
vote
2answers
708 views
Can nmap scan/test all answers from round-robin dns?
I have a round-robin dns record I want to test with nmap, currently it only tries one of the IPs (if I run a loop it checks each in order).
Is there a way to have nmap test all A/AAAA records from a ...
1
vote
1answer
113 views
Does anycast allow for alternate routes to be attempted?
A bit of a bodged up title but I don't know enough of the subject to come up with a more suitable one.
I've read time and time again that anycast is a great solution for load balancing and is the ...
0
votes
1answer
684 views
Sharing connection status between multiple HAProxy
I need to upgrade our current infrastructure based on a single server to a multi server one. Basically we run an HTTP app, MySQL and other services.
My idea is to put HAProxy on all the servers so ...
0
votes
1answer
41 views
Issues to loadbalanced web servers in network when one fails
I have a network of one load balancer server (using nginx) lb1 which routes traffic between four web servers web1, web2, web3, web4. These four webservers are routed to using round-robin in nginx.
...
1
vote
1answer
2k views
How To Load Balancing on Bind9 Dns Server?
i have a DNS server running on ubuntu 14.04 - bind9 , because the server is hosted on t2 micro amazon free tier i don't think it can handle all requests that it will get , over 10000+ clients will use ...
1
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0answers
213 views
Windows remote desktop session host high availability login
I had Windows Terminal Server (WS2012 Standard R2), where everything worked as expected. After this I installed 3 more servers and did high availability with 2 connection brokers and 2 session hosts ...
0
votes
1answer
105 views
Load balancer questions
I have a website (ex: www.website.com) on aws that uses a large amount of streaming data (up to 10mbps / user). Lets say that my website is slowing down because the server simply cannot handle that ...
2
votes
1answer
2k views
Squid cache_peer round-robin algorithm not working as expected
I have number of peer-to-peer HTTP proxies and I need to distribute my requests among them evenly, so I added multiple cache_peer directives and set round-robin as peer selection algorithm. This is my ...
1
vote
0answers
493 views
DNS round-robin requests not distributed evenly
We have setup two DNS A records, where each points to a load balancer.
nslookup ourdomain.com
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
Name: ourdomain.com
Address: 52....
0
votes
1answer
413 views
Apache mod_proxy ProxyRemote to round-robin DNS - always the same subnet
I set forward proxy server using apache mod_proxy, which connects to 20 other proxy servers using ProxyRemote feature.
You can set just one URL for ProxyRemote , in my case it's proxy.mydomain.com:...
2
votes
1answer
239 views
Run different instances behind one load balancer?
When using Amazon AWS is it possible to run different types of instances behind an load balancer?
Let's say as base instance you have an t2.small and when having some more load you want an t2.micro ...
0
votes
1answer
203 views
Is it possible to offer failover even using DNS round robin? [closed]
A company X has five ips to a given service.
$ host www.example.com.br
www.example.com.br has address 13.194.4.159
www.example.com.br has address 13.194.4.152
www.example.com.br has address 13.194.4....
0
votes
1answer
539 views
How the Haproxy roundrobin weighted algorithm works?
I would like to understand the load split in haproxy weighted method. For example
server serverA site1.example.com weight 45 check
server serverB site2.example.com weight 45 check
server serverc ...
2
votes
1answer
737 views
bind zone file setup for dns round robin
I would like to set up load balancing for my website using DNS round robin.
My DNS is managed by my own CentOS 6 server running bind.
I added the following into my zone file:
@ ...
1
vote
1answer
135 views
Setup an intelligent Round-Robin strategy
According to a lot of research - I discovered the design pattern Round Robin. It basically solves the idea I want to adopt.
I want to have a pool with physical servers, each their own IP address that ...
0
votes
0answers
260 views
Load Balancing Nginx
Okay I have edited my question :)
I would like to point all traffic at my dedicated server running Nginx and have that handle 70-80% of the load while also distributing the traffic to some other VPS ...
1
vote
0answers
981 views
Can stunnel be used to round robin tcp connections without SSL?
Today, I'm already using stunnel to provide SSL termination to a set of TCP services where the connections are round-robin'ed, this is done, for example, like follows:
[myserv]
accept = 443
connect = ...
5
votes
2answers
28k views
HAProxy with SSL and sticky sessions
We're trying to set up HAProxy (v1.5.1) to use SSL.
While we managed to do that, we're having some issues with the round robin settings:
We do want to have stick sessions, but haproxy seems to send ...
0
votes
1answer
871 views
round-robin director ALWAYS directs request to the same backend
I've set up one server with Varnish as a load balancer and two servers running nginx/unicorn/sinatra for demo purpose.
All three servers are accessible!
My varnish vcl file:
backend web2 {
.host = "...
-1
votes
3answers
2k views
Pros and Cons of dedicated Load Balancer vs Round Robin DNS [closed]
2 Apache web servers with identical vhosts to serve a few hundred clients. RHEL 6 on all boxes. What are the pros and cons to having a load balancer with a VIP, and pointing all of the DNS A records ...
2
votes
0answers
2k views
Varnish 3.0.5 round robin director not balancing
I have an architecture with two varnish servers sitting in front of 5 webheads. Each varnish server is configured with a round robin backend director, but at times of moderate to high load varnish ...
0
votes
1answer
478 views
Puppet Master does not seem to be receiving certificate to sign from agent
I wanted to configure DNS round robin on my Puppet 2.7.23 Master servers. I configured 2 Red Hat 6.5 servers with Puppet running via Rack with Passenger on Apache 2.2.15 with mod_ssl. I configured ...
9
votes
3answers
11k views
Is round-robin DNS a possible solution for high availability?
Let's say I have 2 IPs for a given domain (round-robin DNS).
If one the IPs becomes unresponsive, will clients try to connect to the other IP? or they will just fail to establish comunication with the ...
2
votes
0answers
138 views
Load balancing inconsistencies & AD server causing network crawl
We've configured a TS load balancing farm consisting of the Active Directory server which acts as the TS Broker and 6 Terminal Servers who are members of the farm. The load balancing is set to basic ...
14
votes
2answers
28k views
Is it possible to have round-robin DNS with /etc/hosts file?
Is it possible to have round-robin DNS with the follwing configuration in /etc/hosts?
192.168.4.10 shaakunthala.local
192.168.4.20 shaakunthala.local
I'm on Linux.
0
votes
1answer
675 views
Load balancing of recipients email adresses on Linux SMTP servers
Background information: We are a provider of web-hosting and email (among other services) and we need several load balanced SMTP servers to fix all our customers needs.
The problem: Every once and a ...
1
vote
1answer
145 views
Round Robin with single source
We have built ourselves an API and are busy scaling it. At current we have 6 hosts and we use DNS Round Robin to spread the load.
However a lot of our traffic comes from single source. We plug into ...
0
votes
1answer
137 views
DNS Load Balance for Static Website
This is more of a educational question in comparison to a production environment. I have an AD environment with two IIS servers hosting the identical website content. For arguements sake lets say it ...
2
votes
0answers
1k views
How does Round robin policy of MPIO work in Windows 2008 R2
I have a Dell server with a 1G dual port iSCSI adapter. I have installed the NIC driver and using Microsoft iSCSI initiator, map few luns to both the ports and enable MPIO. The target I used was ...
0
votes
2answers
483 views
Using dual isp and static ip [closed]
what are the options to increase/backup bandwidth of a load balanced web farm gaining bandwidth from more isps?
What are hardware/ip requirement to benefict from the 2 lines?
http://s22.postimg.org/...
-2
votes
2answers
766 views
How can I use multiple ISPs to increase bandwidth and redundancy for my website? [closed]
I have an HTTP server behind Microsoft load balancing. DNS is provided by the hosting provider.
I want to increase the available bandwidth by adding another internet ISP.
How can I ensure ...
1
vote
1answer
212 views
Can I Repeat Records in DNS Load Balancing?
I would like to bring up the load on a new server slowly over time.
Unfortunately there is no front-end load balancer we can use to adjust this, so I just insert a new DNS record for the domain name. ...
1
vote
1answer
818 views
Multi-level wildcard DNS matched by *.domain.com?
Q1: Does a DNS rule for *.domain.com match multi-level domain names? In other words, if I just set *.domain.com in my DNS records, will it match all of:
a.domain.com
b.a.domain.com
c.b.a.domain.com
...
3
votes
2answers
2k views
DNS Round-robin, Load Balancing, Load sharing, and failover in 2012
I have been reading many posts on serverfault as well as on other sites regarding all these.
What I understand is, Multiple A records(round-robin dns) can be used for both :
Load sharing (round-...
1
vote
2answers
1k views
Multiple DNS A records referencing the same host
If I create multiple DNS A records for the same hosts, for example:
my-domain.com A 1.2.3.4 3600s
my-domain.com A 4.5.6.7 3600s
my-domain.com A 7.8.9.0 3600s
Do queries really ...
0
votes
4answers
3k views
Avoiding 502 Bad gateway in a round robin webserver process restart
I have a load balancer/reverse proxy (either nginx or cherokee, does not matter which) deployed on my server and it points to multiple background webserver processes (either gunicorn or cherrypy, does ...
