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Questions tagged [resilience]

9 questions
6
votes
1 answer

A better multipathing system

We're lucky, every server we have has multiple NICs/HBAs/CNAs connected to multiple switches and this approach has kept our platform up on numerous occasions. That said we ran into a problem last week that I'm not sure how to fix. We had a switch…
Chopper3
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3
votes
4 answers

NetApp filer as a resilient HTTP/S server?

I'm an FC SAN kind of guy and although we use NetApp 30xx filers for lots of non-essential storage I'm really no expert. I have a new requirement for a very resilient (i.e. 3 or 4 '9s') basic static HTTP/S web server that will be shipping out…
Chopper3
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2
votes
3 answers

How do we keep Active Directory resilient across multiple sites?

I handle much of the IT for a company of around 100 people, spread across about five sites worldwide. We're using Active Directory for authentication, mostly served to Linux (CentOS 5) systems via LDAP. We've been suffering through a spate of events…
Alistair Bell
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1
vote
0 answers

Best Way to Achieve Solr Resilience for Drupal With Two Solr Nodes Available?

I'm trying to figure out the best way to deploy solr (6.6.6) on two nodes in conjunction with Drupal 7 to provide some kind of resilience. The first problem is that Drupal only supports the concept of a single solr instance. So even if multiple…
P Burke
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1
vote
1 answer

How to handle in-progress request when applying rolling update?

Given a set of web servers subject to rolling update, such as through kubernetes rolling updates, if a request is issued to one such termination-pending web server milliseconds before a SIGTERM signal is issued to said web server, Should the server…
Philippe Hebert
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0
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2 answers

Simple check to confirm access to a Domain Controller

I'm preparing for a battery of resilience tests on a new network (which will be hosting a mission-critical application). As part of it, I ought to confirm the resilience of the domain controllers. We have 2 DCs in this environment, and I need to be…
CJM
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0
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1 answer

"Drive Extender" / "Storage Spaces" functionality for Windows Server 2008 R2

I have a Hyper-V host with 4 physical HDDs, 300 GB each, and this machine will host a couple of VMs, each probably with a size of approximately 150GB. The VMs are not mission critical but I still need some kind of protection against HDD failure and…
Borek Bernard
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1 answer

Network Resilience Design

I am trying to design multi-site network with resilience for the server farm and DMZ for both inbound and outbound resilience. The following resilience that i want to meet at the first place: 1.For Server that located in server farm, the outbound…
Hyperventilate
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0
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0 answers

Preventative config settings to ensure long-running PHP scripts don’t create hanging MySQL transactions and failure

I’d like to know if there is a PHP/MySQL configuration option (or combination of options) that can prevent long-running PHP scripts in a small number of places from creating hanging and sleeping MySQL transactions that accumulate and can cause the…
Aaron Bushnell
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