load-balancing

Google cloud load balancer port 80, to VM instances serving port 9000

被刻印的时光 ゝ 提交于 2019-12-05 21:24:00
I'm new in GCE, and I am confused about setting up the load balancer. If I have two instances, serving on Port 9000, I want to setup a balancer that accepts on port 80, then route requests to my instances in port 9000.. a diagram like this.. LB:port:80 -> VM:port:9000 I have other load balancers from other providers which has a settings like pointing to VM's port. but in GCE, I cant seem to find it, or I am missing something.. I hope I am making a sense, here. thank you in advance It isn't possible in GCE to do a port rewriting. As a workaround I use port forwarding using iptables Then in GCE,

Clustering in ServiceMix 4

时间秒杀一切 提交于 2019-12-05 17:53:17
I'm trying to configure Apache ServiceMix 4 to provide load balancing feature mentioned in it's documentation (for example here: http://servicemix.apache.org/clustering.html ). Although it's mentioned, I couldn't find the exact way how to do it. The idea is to have 2 ServiceMixes (in LAN, for example) with the same OSGi service installed in them. When client tries to use the service, the load balancer takes him to appropriate service instance on one of the ServiceMixes. Is there an easy way to do that? Fabric8 ( http://fabric8.io/ ) can do Karaf/ServiceMix clustering and much more out of the

Extremely uneven cloud service load-balancing with Azure

本小妞迷上赌 提交于 2019-12-05 17:23:23
I'm utilizing Azure for hosting a cloud service, which I recently modified to be scalable across multiple instances, including a session caching worker role. My question is, why would I be seeing extreme load (upwards of 90%) on one instance, but not on other instances (15-20% across all other instances)? Should I be worried? Before I set up load balancing and when my single instance hit upwards of 95% load, it would slow to a crawl --- becoming unusable. Is there any way to ensure that I don't have any users experiencing this because they're somehow round-robin'd onto the overloaded instance?

Load Balancing in Nodejs

ぐ巨炮叔叔 提交于 2019-12-05 16:58:42
I recently started with node and I have been reading a lot about its limitation of it being single threaded and how it does not utilise your cores and then I read this http://bit.ly/1n2YW68 (which talk about the new cluster module of nodejs for loadbalancing) Now I'm not sure I completely agree to it :) because the first thing that I thought of before starting with node on how to make it utilise cores with proper load balancing is via web-server some like upstream module like nginx like doing something like this upstream domain1 { server http://nodeapp1; server http://nodeapp2; server http:/

WebSockets and Load Balancing, a bottleneck?

余生长醉 提交于 2019-12-05 16:43:13
问题 When having a bunch of systems that act as WebSocket drones and a Load Balancer in front of those drones. When a WebSocket request comes into the LB it chooses a WebSocket drone, and the WebSocket is established. (I use AWS ELB tcp SSL-terminated at ELB) Question: Now does the created WebSocket go through the LB, or does the LB forward the WebSocket request to a WebSocket drone and thus there is a direct link between client and a WebSocket drone? If the WebSocket connection goes through the

How do I configure SSL with Laravel 5 behind a load balancer (ssl_termination)?

喜欢而已 提交于 2019-12-05 16:21:40
问题 I have a laravel 5 project deployed to AWS EC2 web instances, behind an ELB with ssl termination. For things like assets, Laravel by default uses whatever scheme is currently used. However, I've noticed since the https traffic is decrypted by the ELB and forwarded to the EC2 nodes via http, Laravel does not think it's currently using https and thus uses http for assets. This is obviously causing problems. From what I've found, Laravel checks for this sort of proxy setup using the X_FORWARDED

Difference between “SOCK”, “PVM”, “MPI”, and “NWS” for the R SNOW package

喜你入骨 提交于 2019-12-05 15:38:08
问题 The makeCluster function for the SNOW package has the different cluster types of " SOCK ", " PVM ", " MPI ", and " NWS " but I'm not very clear on the differences among them, and more specifically which would be best for my program. Currently I have a queue of tasks of different length going into a load balancing cluster with clusterApplyLB and am using a 64bit 32-core Windows machine. I am looking for a brief description of the differences among the four cluster types, which would be best

How to generate the Certificate Chain for AWS load balancer?

て烟熏妆下的殇ゞ 提交于 2019-12-05 15:28:56
I'm using Amazon Load Balancer with SSL configuration. everything when fine except on Firefox that show the exception page. It looks not self to user. This article suggest to put the Certificate Chain to the configuration section. My SSL provider is Comodo (InstantSSL). They provide two files .crt and .ca-bundle only. How can i generate the Certificate Chain? You can cat the .crt and the .ca-bundle file together. That's what we wound up doing using a service called OpDemand, which is backed by AWS. cat certfile.crt bundle.ca-bundle >> chain.crt chain.crt should be the file you're looking for.

Accessing AWS EC2 instances through ELB

旧时模样 提交于 2019-12-05 14:35:29
问题 I'm trying to set up two instances under an elastic load balancer, but cannot figure out how I'm supposed to access the instances through the load balancer. I've set up the instances with a security group to allow access from anywhere to certain ports. I can access the instances directly using their "Public DNS" (publicdns) host name and the port PORT: http://[publicdns]:PORT/ The load balancer contains the two instances and they are both "In Service" and it's forwarding the port (PORT) onto

How to tell AWS application load balancer to not forward the path pattern?

隐身守侯 提交于 2019-12-05 13:24:10
问题 I have configured my AWS application load balancer to have the following rules: /images/* forward to server A ( https://servera.com ) /videos/* forward to server B ( https://serverb.com ) And this is correctly forwarding to the respective servers. However, I don't want the load balancer to forward the request as https://servera.com/images & https://serverb.com/videos . I just want the respective servers to be hit without the path pattern as https://servera.com & https://serverb.com (without