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DevOps

Proposed Q&A site for software Engineers working on automated testing, continuous delivery, service integration and monitoring, and building SDLC infrastructure.
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56 Example Questions

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up vote 13 down vote
How to implement the [immutable server] pattern without loosing the ability to do [post-mortem]s?
added by Michael Grünewald Apr 2 at 6:39
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Just to clarify, the immutable server pattern usually involves removing ssh or more generally administrative access to the machine, which can be an obstacle for post-mortems. – Michael Grünewald Apr 18 at 11:38
up vote 12 down vote
How to achieve a smooth transition from “the one big VCS repository for all projects” organisation model to the “many small VCS repositories” model?
added by Michael Grünewald Apr 2 at 6:41
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This is a good question imho; maybe specify "scv repository" to make it more clear. Or the transitioning from monolithic to microservice architecture – guido Apr 2 at 10:08
Of course this is about testing and deploying – at the SCV level, this is an easy task. – Michael Grünewald Apr 2 at 15:33
up vote 12 down vote
Road to DevOps - Does my organization need to be Agile before adopting DevOps?
added by Null Reference Apr 3 at 1:12
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up vote 11 down vote
How does using the [immutable server] pattern and SSH-less servers improve security?
added by Michael Grünewald Apr 2 at 6:38
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up vote 11 down vote
How do we test our infracode, such as Ansible playbooks or CloudFormation templates, in a Continuous Delivery context?
added by Héctor Valverde Pareja Apr 23 at 18:31
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@hector-valverde-pareja Thank you for your interesting questions! There is a misspelling in the title of this one. :) – Michael Grünewald Apr 26 at 19:14
Apologies, English is not my mother language. I don't see the error though? Could you illustrate it, please? – Héctor Valverde Pareja Apr 26 at 19:17
You probably meant CloudFormation instead of ClourFormation. :) – Michael Grünewald Apr 26 at 21:06
Ops! Just Fixed! – Héctor Valverde Pareja Apr 26 at 21:14
up vote 10 down vote
How to circumvent port allocation limitations in ECS to allow optimal placement of worker tasks in an EC2 cluster?
added by Michael Grünewald Apr 2 at 6:39
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up vote 10 down vote
How to sequence tasks in [chef], when updating a self-served microservice (executable warfile) supervised by [runit]?
added by guido Apr 2 at 10:09
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up vote 10 down vote
How to setup [rundeck] configuration for instancing [openstack] nodes with [nova]?
added by guido Apr 2 at 10:10
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up vote 10 down vote
How to include my internal CA certificate to validate SSL exchanges in [chef]/[puppet]/[salt]/[ansible]/[linux]/[windows]
added by Tensibai Apr 4 at 8:07
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up vote 10 down vote
What are the pro and cons of SnowFlakes Servers, Phoenix Servers and Immutable Servers ?
added by Tensibai Apr 4 at 8:17
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Addendum as it can't fit int he tittle: I'm pretty sure this question can be a good fit and give a proper comparison table as answer, splitting it on each type would scatter the information and comparison with other types would be needed anyway. – Tensibai Apr 4 at 8:19
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@Tensibai agreed; in my view, this proposal would have this kind of comparison questions at its very core. – guido Apr 6 at 14:33
up vote 10 down vote
Should devops engineers attempt to migrate scripts to a common language?
added by Peter Turner Apr 4 at 13:18
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up vote 10 down vote
How do I refactor Ansible playbooks to create roles?
added by Peter Turner Apr 4 at 13:23
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up vote 10 down vote
What branch strategy to use for migrating from waterfall to true continuous integration (a single main development branch)?
added by Dan Cornilescu Apr 5 at 14:11
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up vote 10 down vote
How can I gain support from developers for a more rigid deployment process?
added by Philipp Apr 20 at 9:28
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If by rigid you mean defined and automated, this is a good question. – Adam Berry Jul 8 at 17:14
If this is what you mean, maybe “formalised” is a better match than “rigid”. – Michael Grünewald Aug 12 at 15:34
up vote 10 down vote
Is there any known patterns for creating good diagrams/documentation for DevOps strategy?
added by Felipe Plets Apr 27 at 23:07
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up vote 9 down vote
How to mitigate low entropy problems in [docker] containers and cloud environments?
added by Michael Grünewald Apr 2 at 6:39
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up vote 7 down vote
How can I use [chef] to configure a clustered application like [hadoop]?
added by Travis Thompson May 2 at 22:06
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up vote 5 down vote
How can I send all logs from all applications running in a [Mesos] cluster to logstash [ELK]?
added by Héctor Valverde Pareja Apr 23 at 18:39
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up vote 3 down vote
Is there any good solution for automated UI tests for mobile apps?
added by Felipe Plets Apr 27 at 23:05
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up vote 3 down vote
How is Ansible different from simply running a provisioning bash shell in Vagrant?
added by leeand00 May 6 at 13:06
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up vote 2 down vote
How to let [sonar] cast votes against CR label instead of V in [gerrit], when test [coverage] is below a threshold?
added by guido Apr 2 at 10:09
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up vote 2 down vote
How can I create a high availability cross-region [VPN] in [AWS]?
added by Héctor Valverde Pareja Apr 23 at 18:35
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Maybe you could give a hint at the type of service you want to make highly available? This type would influence the consistency of operation or telling if the service operates in read-only mode or in read-write mode. – Michael Grünewald May 6 at 22:34
up vote 2 down vote
Which tools can be used to enable DevOps (CI and CD) for iOS mobile applications?
added by Felipe Plets Apr 27 at 23:07
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up vote 2 down vote
If I run CoreOS on bare metal, do I have to set the $private_ipv4 and $public_ipv4 substitution variables manually?
added by leeand00 May 3 at 20:41
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up vote 2 down vote
How can continuous integration scale for very large scale projects/teams?
added by Dan Cornilescu May 6 at 0:44
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up vote 1 down vote
How do I setup in [chef] the configuration of [runit] for running an [uberjar] spring component?
added by guido Apr 2 at 10:10
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up vote 1 down vote
What is a good way to set up Docker swarm over a public network? I want minimal hard-coding of IP addresses, etc.
added by pwnall Apr 4 at 3:35
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up vote 1 down vote
Should developers take the responsibility of creating the Dockerfiles and, therefore, of the Docker image design?
added by Héctor Valverde Pareja Apr 23 at 18:42
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up vote 1 down vote
Is there any good solution for service discovery using Docker and ECS to not run on port allocation issues?
added by Felipe Plets Apr 27 at 23:07
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up vote 1 down vote
Do Federated Keberos and ldap have any place in DevOps?
added by leeand00 May 6 at 13:49
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up vote 1 down vote
Is there a CI tool that **guarantees** green labels available?
added by Dan Cornilescu May 12 at 15:27
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up vote 1 down vote
How can I implement blameless post-mortems in my organization>
added by Matt Stratton Jun 20 at 10:35
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up vote 1 down vote
What approach to take for moving from Virtual Environment to total Cloud based?
added by Vikar Jul 21 at 7:01
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up vote 0 down vote
[Java] webapps packaged as [RPM]s in [maven]: how to classify the artifact in [nexus] [yum] repository for the various deployment environments?
added by guido Apr 2 at 10:07
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up vote 0 down vote
How can **many** teams use agile methodology and CI in the same branch (on a very large project, for example)?
added by Dan Cornilescu Apr 3 at 13:51
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up vote 0 down vote
Can *slightly unreliable* testing be used in CI/CD systems?
added by Dan Cornilescu Apr 3 at 13:52
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up vote 0 down vote
What is the difference between an application running in Docker and one running in a VM?
added by Peter Turner Apr 4 at 13:21
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up vote 0 down vote
How can we automate PDEs maintenance and monitoring?
added by Héctor Valverde Pareja Apr 23 at 18:50
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up vote 0 down vote
How to implement CI and CD for iOS apps using managed services?
added by Felipe Plets Apr 27 at 23:08
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2  
Maybe you want to rephrase this as “How to implement CI and CD for iOS apps using managed services” rather than asking for a service recommendation. I think this wording is more likely to attract good answers. See discuss.area51.stackexchange.com/questions/22781/… – Michael Grünewald Apr 28 at 8:56
Thanks for the advice Michael! – Felipe Plets Apr 28 at 13:06
up vote 0 down vote
When running DC/OS on AWS, how do I create DNS entries for services in a way that will make them publicly accessible?
added by Yaron Idan May 6 at 10:50
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