Questions tagged [infrastructure]
The infrastructure tag has no usage guidance.
179
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3
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Openstack redundant architecture on three servers
I would like to deploy an Openstack architecture on three (super)servers in a way that if one of server is down the Openstack infrastructure is still functionning.
What is the best way to deploy ...
- 83
1
vote
1
answer
642
views
Latency load balancing + failover solution
I am looking for a latency (or geo) load balancing solution combined with dynamic fail overing.
The infrastructure is based on 3 dedicated severs from OVH. The servers are located in 3 different ...
- 11
0
votes
0
answers
84
views
Selecting suitable server infrastructure for an SME envionrment
I've been assigned to come up with a solution to best fit our organization needs. Basically, we currently have a single server running few bunch of VMs on one organization. And the need now is to ...
- 259
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1k
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How to let Ansible pick a datastore and ESX host in VMware?
I need 50gb space, 64gb of ram and 2 cpu's for new virtual machines.
We want to use Ansible for infrastructure as code, but what would best practices in letting Ansible picking the right datastore ...
- 4,033
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318
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networking devices for structured cabling - building and campus distributors
Which type of network hardware devices (Router vs Swtich) you would use as a campus distributor in a structured cabling project?
It seems logical to use switches as building distributor, we can ...
- 111
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2k
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How to use another IP-address for outgoing traffic?
Background
I run a server with two external IPv4 addresses. IP-address A (IP-A) and IP-address B (IP-B).
Goal
I would like to access IP-A over HTTPS port 443 and SSH port 22 only. IP-B shouldn't ...
- 444
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votes
3
answers
358
views
Connectivity between switches using SFP+
My office infrastructure is currently configured with HP Procurve switches. They are interconnected with 10Gbps fibre. All the SFP+ Ports are in use on all the switches.
I am looking at buying a new ...
- 19
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3
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97
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How can I keep a third-party cloud provider accountable for guest VM performance?
I support an ERP system for a manufacturer. We're experiencing intermittent application performance issues on our database, hosted on VMware by a third-party cloud provider. (They're a smaller ...
- 164
2
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1
answer
122
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Can unjacketed cable handle gigabit speeds?
Looking at taking over management of an old network that was done in 2004. Surprisingly, for the time, it is category 6 cable. About 200 ports in each of 5 IDFs, all running PoE.
But I'm worried the ...
- 964
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505
views
Puppet Duplicate declaration: Class
I'm bit new to puppet, but I'm not sure how this would become a duplicate declaration, can someone please give me some direction whether this is a correct usage of class passing params or not?
Error: ...
- 101
3
votes
1
answer
29
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Should our traffic drive our system design or our system design drive our traffic?
A few weeks ago, I have moved to a new company as Linux system administrator, they are going to start a project of moving production servers infrastructure from a data center to Amazon AWS.
They are ...
- 196
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52
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Geo-Availability Single Terminal Server Opinions [closed]
First off, I am not an Azure specialist by any means, but I do have experience with creating Azure VM's for site to cloud replication and stand-alone cloud environments for business solutions.
...
- 11
2
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0
answers
76
views
Security concerns w/ physical vs virtual network gateways [closed]
I am in the process of setting up a private network that uses a gateway system for access to certain services on systems behind the network, e.g. ssh, ftp. I have some experience using virtualized ...
- 2,751
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votes
1
answer
232
views
Use WAN as internal network
Suppose I have a little web infrastructure for serving clients that contains nginx as a frontend server, couple of backends (upstreams), a messaging system, db and so on.
This stuff is located on ...
- 145
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1
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226
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Patch panel confessions
So the old IT guy was a college student with no experience prior to be hired beyond some classes. The one before him had no experience at all and just did his best with what he had. Now I am here and ...
2
votes
1
answer
337
views
Configuration changes in immutable infrastructure
How are people who are using immutable infrastructure handling configuration changes between their different environments? I can't workout a nice way to create one AMI per role and use it in all ...
- 23
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77
views
Do you know any application that helps to keep a inventory of dependency beetween aplications and servers? [closed]
with the grow of the number of servers and applications in our environment, we are facing a problem when we need to reboot some server and do it, thinking that is safe, and then we realise that some ...
- 73
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195
views
Using Azure as infrastructure as a service, configuring HTTPS endpoints / load balancer
I am quiete now to the topic of routing traffic, since it's done by our hosting provider so far.
I would like to setup some Virtual machines and configure HTTPS and Loadbalancing on Azure.
I do pick ...
- 1,451
3
votes
1
answer
177
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Detecting Infrastructure Provider in Puppet
Note: we use Puppet standalone (master-less) i.e. puppet apply.
Usually, while deploying a web application there are a number of back-end services and applications that run behind the front-facing ...
- 153
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votes
1
answer
250
views
Building the infrastructure to support a web application
I am building infrastructure to support a web application. I think I have a decent idea of what the infrastructure should look like, here's what I have:
2 x 16GB, 4-Core HAProxy servers for load ...
- 44
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1
answer
69
views
Securing Webserver and Database
I need to secure an internal web server and sql db, that is going to be made public(www)
At this stage im only looking to provide a reasonable amount of security($$) until it gets bigger at which ...
- 321
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2
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489
views
Best way to connect the network to the internet?
I'm setting up a small network for an air cadet squadron I help to run. We've just moved into a brand new HQ which is kitted up with ethernet ports throughout the building so I thought I may as well ...
2
votes
1
answer
392
views
using pgpool doesn't see a list of variables into group_var directory
I am using Ansible + Vagrant to create my infrastructure or make a little simulation of I wish. It installing postgres and creating a ssh directory to store the differents keys for each host.
It is ...
- 1,332
2
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3
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1k
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Wireless network infrastructure for an office with 40 employees
In my company we're facing connectivity problems due to our not very professional network infrastructure. We're growing now, and we expect to be 40 people at the office by the end of the year.
I'm ...
6
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2
answers
3k
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How to use terraform.io to change the image of a stateful server without downtime or data loss?
Say I have application servers, database servers, and a few dns-round-robin load balancers. All this powered by images created with Packer with deployment managed with Terraform. How do I change the ...
- 183
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3
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927
views
What types of systems have to “scale up” rather than “scale out”?
I have been wondering for a long time if there are systems that have to "scale up" (onto a more powerful, more expensive server) rather than "scale out" by being split across many smaller servers.
...
- 239
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2
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733
views
Pros and cons of virtualization [closed]
I'm aware of many questions here discussing similar topic, but in this case, I'll try to be much more specific. One target scenario is small to mid-size ISV, the second scenario is an enterprise ...
- 237
1
vote
2
answers
204
views
Infrastructure advice - appliaction and network servers
I'd like to ask for server infrastructure advice. We'll be upgrading our network infrastructure (built on MS ecosystem) and so far we have two servers (not counting ISA server): one machine serves ...
- 237
-1
votes
1
answer
62
views
Doubts about Cloud Infrastructure [closed]
Maybe a little more of the same questions that others have asked but wanted to clarify my doubt, for some years run my hosting company (reseller of esds) and I've done well so far, but I am determined ...
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4
votes
2
answers
186
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Beginning a company's digital certificate infrastructure [closed]
What type of digital certificate product do I need to begin a digital security infrastructure within my company and for use by our customers (pre-trusted by chaining)?
I believe I need some kind of ...
- 806
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2
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182
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Looking for recommendations on how to evaluate replacement of on-premise server with new server or go to cloud
My business has about 15 people in a single location. We've lived forever off a local Windows Server for file sharing (about 800 GB) and access to our accounting system, which is also file system ...
- 495
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vote
1
answer
849
views
Load Balancer and using multiple SSL certificates
Here is our current production configuration at a 3rd party data center:
•2 LINUX/CentOS tomcat web servers behind a shared load balancer
•DNS entries point to the load balancer
•Web apps are ...
- 11
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1
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264
views
How to setup my email infrastructure (small company) [closed]
I am new to the field and I am trying to learn.
I have a domain name (let's say mydomain.it) registered with Company A.
Company A provides me both a DNS service and a Mail service.
I use the DNS to ...
- 103
6
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118
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When should an org invest in a private infrastructure as opposed to a partially or fully hosted solution? [duplicate]
Not referring to militaries or governments, but for other organizations or shops that needs an IT infrastructure (who doesn't nowadays). Similar to this question, but purely in regard to hardware and/...
- 5,591
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1k
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Can I build an Azure Only infrastructure for my small business?
I have small business, 63 people now, but we are growing slowly. We have no Active Directory, we use Office 365 for email, and about 25% use Macs. We are kind of spread out, 3 offices with more than 5 ...
- 23
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1
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2k
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LAN Redundancy - NIC, Cables + Switch?
I'm trying to move to a HA solution and would like to understand what hardware is required to have redundancy in the NICs, switch and cables.
The diagrams below show how I envisage a non-redundant ...
- 325
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answers
792
views
Separating Secure Network and DMZ (nonsecure) in a PCI Compliant Infrastructure
We are setting up a PCI Compliant infrastructure where most of our applications are running in a DMZ (demilitarised zone) that contain no sensitive information. The part that contains sensitive ...
- 135
1
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1
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137
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Questions to ask when choosing an infrastructure [closed]
My company will be in need of a backend to bootstrap its services and I'm in charge of the infrastructure choice. The products will consist of several apps (mobile, web, desktop) with a common backend ...
- 129
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2
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129
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A backup system alone: tower or rack chasis?
We'll install a backup system in following possible configurations:
two servers in cluster with a SAS JBOD attached to them
one server with the same JBOD in back
However I'm thinking if really is ...
- 131
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2
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2k
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It is possible to visualize the load of an APC switched PDU for a specified period of time?
There are some APC PDUs AP7953 and now we think about a solution for check the load over a period. We don't need a 100% correct Value only a trend on which hours we have more load to localize peeks in ...
- 886
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1
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126
views
BT socket Device over Structured Cabling
Essentially I have a Credit Card machine which is connected to a phone line via standard BT Socket.
So basically, the port of the wall has a balun plugged in which takes the RJ45 outlet on the wall ...
- 1,684
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vote
4
answers
3k
views
TCPing reports 20ms latency between Web Farm and DB
We have a IIS web farm sitting in a DMZ connecting to a MSSQL DB(Windows Cluster). After troubleshooting some performance problems we stumbled upon strange network behavior.
We wanted to test network ...
- 111
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184
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infrastructure of an web app [closed]
I'm curious as to the infrastructure of an web app... is it a network of cloned servers with the same exact app/source code, a network of cloned database servers and a network of media/asset servers ...
- 261
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5
answers
440
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VOIP Power outage strategy
In the past 2 years, we have had 4 instances where we have been without power for a period of 4-6 hours - due to construction crews cutting power lines, car accidents involving downed power lines, etc....
- 1,077
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249
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Infrastructure design recommendations for a simple proxmox setup
I am aware of the dangers of this question being non-constructive so bear in mind I did my best to narrow the possible answers I get.
I am swapping an old dedicated Gentoo server for a new one, and ...
- 1,244
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2
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189
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Inter-site linking with a WAN cluster infrastructure
I am planning to deploy an infrastructure of 11 nodes using Opscode Chef, providing for a high availability web application. I would like to spread the nodes across datacentres for availability, for ...
- 278
38
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5
answers
12k
views
What to look for in a server rack?
I'm looking to purchase a rack/enclosure for some servers. As this is my first time shopping for this type of equipment, I need to know what to look for. I'm asking not only about how to buy the rack, ...
- 13k
4
votes
3
answers
2k
views
Out of band notification when UPS loses mains power?
We're currently looking into upgrading our UPS and possibly having a small petrol generator on site in the eventuality that the UPS battery is used long enough to drain it completely.
Realistically, ...
- 2,727
8
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2
answers
2k
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10GBASE-T shielded cable switch-to-server connection
I'm venturing for the first time into the 10 gigabit (over copper) realm. Likewise, I have never worked with shielded CAT-5/6 cables previously. From my own research, I understand the types and ...
- 121
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770
views
Opscode Chef nginx compile from source issue reports successful run but does nothing
I am trying to install nginx from source in Opscode Chef and its bit weird, it runs complaining nothing but does not install it either.
This is how my role attributes look like looks like
"nginx":{
...
- 13
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