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Questions tagged [infrastructure]

176 questions
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3 answers

Recommendation for a small redundant VM infrastructure?

We currently have an active-active 2 node cluster running virtual machines. Every node has two disks, every disk is DRBD mirrored on the other node. Every node runs virtual machines out of his primary drbd device, and the pacemaker cluster will…
Luke404
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1 answer

Fibre Optic Cabling - Where to start?

I'm a sysadmin/developer that works for a small IT company. We are having a new office building built, and we have a limited time window in which to put in the core infrastructure network cabling that we require. As budgets are tight at the moment,…
Bryan
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2 answers

Infrastructure - management - Is moving from custom code base in place to Ansible worth it?

Some background: When I started at my current work place ( in server infrastructure ), a bash, perl and python code base already was in place for remote executing jobs on linux systems, the one guy that wrote and maintain this code base have spent…
MetalGodwin
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1 answer

mkfs.ext4 error with option -O ^64bit

When I run /sbin/mkfs.ext4 -O ^64bit /dev/app/mysqldata command in a script it gives me below error: nd(): null: With return code "1", Output from: "/sbin/mkfs.ext4 -O ^64bit /dev/app/mysqldata" mke2fs 1.42.9 (20-Jan-2014) mkfs.ext4: Size of device…
dbNovice
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2 answers

Difference between hard drives

I recently purchased an HPE ProLiant DL380 Gen9 Server for my company. This is all new to me and I am trusted to creating my companies IT infrastructure(hired to do software). I'm having a hard time understanding the different prices for hard…
Derek Welton
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2 answers

Redundant UPS with 2 power sources

I've 2 power sources in my house: One from the national power grid and another from an internal power source. I've several power sockets in my server room from these 2 sources. Did some research and I was unable to find a UPS systems (at a…
Mário
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1 answer

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 this ? Is deploying Control, Network and Compute…
SwissFr
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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 following the concept of "our traffic drive our…
Jubba Smail
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1 answer

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 application - things like the database, search…
vaidik
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active directory or workgroup for production machines

The old school of thought was that application and database servers should not be part of the domain. I have my network setup such that only the app servers can communicate with the db servers. The app servers are in their own workgroup and the db…
mson
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What happens with the Guest OS's on ESXi in the event of a power failure?

Many small businesses would prefer to let their server drop on power failure than to pay even $100 for a cheap UPS. It's often difficult to convince them of the value of something like that; it's why they like ESXi. It's free, they can save a lot of…
Jeremy Holovacs
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1 answer

Rails/Mongo across multiple different geo-regions

I have a system that by necessity requires physical presence in three or more different locations and I need advice on structuring in such a way that my database stays replicated in a timely manner without horrible latency. I've seen mysql access…
wmarbut
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3 answers

Tool to describe information about infrastructure

I'm looking for something to describe existing infrastructure of working applications. What I need: The ability to create new entities, add/edit properties of entity. Example of entity is Windows server with properties such as IP address, server…
mrusaev
3
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5 answers

How to convince a corporation to use DNS?

This is not the first time in my life when I have to convince a smaller corporation about using DNS service instead of /etc/hosts files and IP addresses. It might seem silly/funny at the first time, but imagine that there are many administrators who…
Istvan
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A plan to mitigate PDU failures?

A client just experienced a complete failure of an APC AP7911A switched/metered rack power distribution unit (PDU). This obviously took all of the connected equipment down with it. The equipment is fine, as well as the upstream UPS units. In…
ewwhite
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