Advice on how to explain your previous DevOps experience to your hiring manager.

When ever this question pops up, I blank really hard.
Can anyone tell me how they’d answer this? ( I’ve Basic DevOps experience of 1 year which includes GIT,Jenkins, Puppet, AWS, Docker, Nagios, Python etc). TIA.

https://redd.it/f81ous
@r_devops

Azure CosmosDB vs MongoDB Atlas. Any experience?

Does anyone have experience with these two technologies?


My company is currently in the midst of a full migration Azure and we are at a crossroads on what would be the best solution for our use case.

​

We currently run on prem mongodb clusters. We were debating between Azure Cosmosdb with mongo API or MongoDB Atlas. They both fit our use-case and it really is a matter of deciding which offers even a slightly marginal benefit over the other.

Some considerations that we are debating

\- We are currently using Mongodb thus it would be nice to continue without re-architecting

\- CosmosDB has a smaller max document size which would require some re-architecting

\- CosmosDB API is wrapper and it would be preferable to use the true Mongo API

\- CosmosDB is the Azure solution for a document DB so it would be a natural choice for going all in on Azure

\- Seems as though if you don't properly account for your throughput with Cosmos that you run the risk of going over RUs and have to take this into account.

\- We are doing ongoing research into differences in sharding

\- Pricing differences (anyone have any experience with either of these techs?)

​

This is relatively early in our research. I am mostly just looking to see if anyone here has any experience with these technologies, or transitioning to them.

https://redd.it/f83wby
@r_devops

Why is Splunk still very popular? Its user interface is super ugly to say the least.



https://redd.it/f8jgo9
@r_devops

($?) Storing ~480GB of data with MongoDB

Hey all!

I'm in the need to store \~480GB of data in a MongoDB database.

If I go the Linode/DO route, it should cost \~$160/mo?
Does that seem like a good price for this amount, and if so, are there any recommendations on scaling back costs by a bit?


Thanks all!

\-P.

https://redd.it/f8kt7x
@r_devops

Can you describe your first two weeks at your new DevOps role? Do you start utilizing all required skills right away? Building CI/CD, Ansible automation, AWS, etc? Or are you given some time to understand your companies new architecture before you get your hand's dirty? How were your first weeks?

I'm suffering from imposter syndrome, even though I know deep inside that I know all the required stuff, and it's giving me terrible anxiety during the interview process.

https://redd.it/f8kprq
@r_devops

Prometheus – Looking for a good guide to learn Prometheus

HI, I have inherited a Prometheus server (with alert manager and Grafana) and for the most part I have a basic/ok understanding on its configuration, however I find Prometheus documentation to be very lacking / hard to understand.

So in terms of my knowledge I know how to add additional scraping jobs, drop metrics from scraps etc.

There are a number of things I just don’t understand why you would do it or only have a basic understanding what it is, such as:
* Why would you perform a relabel on a label?
* What the best practise is for splitting up scrap jobs – ie if all nodes have a node exporter should I have a job just for node exporter or a job for each kind of service and scrap all explorer these servers run (ie node exporter and haproxy exporter).
*alerting
* Remote read and writes
* Scaling / HA – I just assume deploy another instance to scrap everything
* etc. I find the documentation to be very lacking for example the “remote_read” under the configuration document only states “Settings related to the remote read feature”. It took be a bit of digging though to find out the basics of what remote_read are used for.

I also have a book form the humble bundle a while ago and reading thought it I also find it just assumes you know what things are without explain them as well.

So does anyone have a good guide on explaining Prometheus in a more easy to understand manor?

Ps: I know the issue of my understanding of Prometheus docs might just be down to me as my English is not very good

Thanks

https://redd.it/f8hxs2
@r_devops

Looking for feedback on LogDNA

We are currently in the process of adding a log management solution to our production servers (bare metal), and are comparing many options that are available in the space. We have narrowed it down to running our own ELK stack, or using a managed solution - among which LogDNA caught our eyes. I have not been able to find much feedback on that particular tool in here, despite its seemingly wide adoption.

Have you had experience with LogDNA? How does it compare to ELK in terms of ease of setup/effort/benefits? How does it compare to other centralized logging tools?

Thank you.

https://redd.it/f8eos1
@r_devops

What are the best practices to secure the production MongoDB on cloud (Azure/GCP/AWS)?

It'll be of great help because there has been a breach recently in our production Database. Can you guys help me with this? I'm totally new to DevOps and have been handling things in my company smoothly until this happened.

​

Thanks!...

https://redd.it/f8ng1w
@r_devops

Heart beat vs health check.

In checking on how a service is doing, I see to different strategies.

Heart beat: much like sending a trivial message over a long-lasting connection, such as with server sent events, this simply checks if there's an error in delivery. It's a good way to know if a service is down completely, and its frequency can be once a second.

Health check: health check is like a heart beat, except it happens less frequently, and perhaps does some more work to report on how a service is doing.

Do I have the distinction right? Is there a distinction?

https://redd.it/f8et0h
@r_devops

Overcoming "the dip" as a junior devops engineer?

I am a junior devops engineer with one year experience and I am the only one doing devops at my company.
For the most of my time in this role I have been learning, trying new things at a fast rate and implementing interesting technologies to improve processes where I work (ci cd, kubernetes, terraform, azure, automated backups etc ..)
Last couple of months, I have had a drop in confidence in my skills and went from feeling as if I knew everything to feeling like I know nothing and that I am not improving as devops professional (for no particular reason).
My question is: have you had that happen to you early in your carreer and if yes, how did you overcome it?
(This is my first Reddit post, so apologies if this doesn't belong here)

https://redd.it/f8elx2
@r_devops

How to Reformat Multiple Machines Remotely?

I plan to improve the way we set up computers in computer labs in the university. Current process is reformat computers, then install apps needed for the lab, one by one. This takes a lot of time and effort.

I've read about PXE booting and Puppet, but haven't yet found a complete guide on doing the remote install and setup. I hope you can give me guidance on this matter.

Thank you.

Edit:

+ we are using ubuntu

+ computer lab is used for programming classes e.g. Android dev, web dev, C/C++/Java/Python, Data Science etc

https://redd.it/f8t1mp
@r_devops

Would you consider adopting the "GitLab Platform"?

GitLab has a very broad portfolio - all the way from CI / CD to monitoring. To me its very strange to see something like this. We never adopt a platform at our firm - mostly best-of-breed solutions.

I wanted to make sure we are not missing something here and wanted to see if any one here thinks their strategy really makes sense for an enterprise (2k+ employees)? and if there is any tangible benefit of going all in with their platform?

P.S. The closest thing we have to a platform is a bunch of stuff from Hashi - secrets management, Dev environment, Terraform.

https://redd.it/f8uhet
@r_devops

Linux+ or RHCSA

Hello! I'm new to the devops community and devops in general.


I just got my CCNA and I want to begin the devops track. I've been using Linux and the command line for about 16 years but not really in depth.

I bough a RHCSA course on Udemy a while ago but I'm having trouble deciding which certification to pursue.
Which one could serve me most in a devops career? Any tips or recommendations?


I appreciate it.

https://redd.it/f8swcl
@r_devops

The Current State of IT.

Hey everyone. I’ve had a lot of questions bugging me lately that I wish some of you could provide the answers to. As someone with barely any IT experience trying to get an entry level help-desk job to build experience, and trying to set myself up for the next shift in IT (cloud), it seems like there’s a not a set path anymore.

Let me explain, and please correct me if I’m wrong. Right now, from what I’ve researched, the next lucrative thing in IT is the “cloud”. AWS, Azure, GCP is the name of the game. There have been posts I’ve seen on here every now and then, where someone manages to get a “DevOps” or “Cloud Engineering” job skipping help-desk (with no experience).

Q1) How does one get a cloud job, by skipping help-desk, if cloud jobs require a few YOE?

Another thing I want to comment on is why I think it’s kind of confusing for beginners in IT, who want to set themselves up properly for the foreseeable future (cloud). You see all these posts with beginners saying things like: “Is My RoadMap correct?”.

Usually these posts contain getting certs in order like: Security+ → Network+ → CCNA → RHCSA......

They also contain learning the proper skills: learn Python...... learn Docker...... learn A - Z...... you get the gist.

I think where the disconnect comes in, is that a lot of people with experience in this sub, have [The Curse of Knowledge](https://en.m.wikipedia.org/wiki/Curse_of_knowledge), and forget what it’s like to be a beginner, starting out in IT.

Usually the more experienced people will comment like: “yeah, sounds good, make sure to also learn: Python, Go, Linux, Windows, Azure, master Git!!!!!!, oh don’t forget to learn some networking, might want to learn how to create your own protocol as well”.

I wonder, do the people in this sub know everything they tell others to learn, or is it an unconscious form of gatekeeping?

Q2) Having to learn these skills, are entry level positions disappearing (besides help-desk)?

It seems like nowadays companies want employees who are entire IT departments, instead of engineers.

Q3) Is SWE a subset of Cloud Engineering, vice versa, or is Cloud Engineering it’s own entity?

Q4) There are two ways to become a Cloud Engineer / “DevOps” (I understand this is a methodology, but at this point I’m pretty sure you can consider it a job title), either starting off as a SysAdmin or a Developer. Is this correct?

Appreciate everyone taking the time to read this, let me know your insights.

https://redd.it/f8w48p
@r_devops

Unable to use AWS api keys with mfa enabled

We have an IAM policy setup that prevents you from doing anything on AWS except setting up MFA if you are not logged in using MFA. This works great for the console but causes an issue when it comes to using the command line or in particular deploying thru visual studio.

Below is what users are allowed to do without MFA in use, everything is blocked.

[
"iam:CreateVirtualMFADevice",
"iam:EnableMFADevice",
"iam:GetUser",
"iam:ListMFADevices",
"iam:ListVirtualMFADevices",
"iam:ResyncMFADevice",
"sts:GetSessionToken",
"iam:ListUsers"
]

How can I have it so that developers can use the command line or VS to interact and deploy things while the account has MFA setup ?

https://redd.it/f8sj4i
@r_devops

BayLISA meetup presentation on the technology behind using machine learning for autonomous incident detection and root cause indication

This is a recording of the Feb 20 BayLISA meetup. It goes into technical detail on how machine learning can be used for autonomous incident and root cause detection. [https://youtu.be/gNiWtoxJ9iM](https://youtu.be/gNiWtoxJ9iM)

https://redd.it/f8w3aj
@r_devops

Tracking PR-to-Jenkins-test-result cycle time

Hi all, long time lurker, always enjoying the conversation, debate and resources. Today I have a question on how to most easily extract an important metric from Jenkins and/or Bitbucket. Be gentle, I'm new.

I'm trying to track over a period of months the cycle time from a developer posting a PR to when Jenkins passes or failed the commit. This should help optimize our jenkins infrastructure in a very slow-to-react organization. Does anyone know of a Jenkins or Bitbucket plugin that would help?

Here's our cycle:
- Dev submits PR to Bitbucket or a commit to an existing PR
- Jenkins Bitbucket Pull Request Builder Plugin starts a build
- Jobs often have a 2-3 hour backlog, sometimes longer *this is a problem*
- Jenkins processes each job in ~32mins
- Jenkins pass or fail is reported back to Bitbucket via Jenkins Bitbucket Pull Request Builder Plugin

I have metrics on actual build and test time, but I need a way to better measure the infrastructure performance so I can beg and plead to update equipment and pilot cloud solutions for CI/CD. I can't be the first person to need this out of Jenkins. Has anyone crossed this bridge before?

Edit for additional information: This is a very simple on-prem setup. New tools outside of Jenkins or Bitbucket plug-ins are going to be very difficult to acquire.

https://redd.it/f8yms7
@r_devops

Which programming language should Devops Engineer pickup Python or Golang ?



https://redd.it/f8qzvi
@r_devops

Datadog volume discount?

Hi,


Does anyone know how much of a volume discount you're looking to get, if you go 500+ hosts on Datadog? And would anyone be willing to share that info?


/kg

https://redd.it/f8op35
@r_devops

Local Jenkins reports to azure devops

Hey all

I have Jenkins on an internal VM which is triggering builds off an azure devops git repo. This all works great!

So now I have been requested to integrate the reporting from Jenkins out to the azure devops project. Though I can see azure has a bunch of Jenkins support, it seems to mostly expect azure to be able to reach where ever Jenkins is.

Do I have any options for getting information from Jenkins to azure regarding things like build status or xml reports from unit tests. Is there some way I can tell Jenkins to publish that information to my devops project, Jenkins being the initiator rather than azure. I can send information to azure from the VM Jenkins is on no problem but going the other way is going to be a no-go due to my orgs security.

https://redd.it/f91m1i
@r_devops

How does ArgoCD's gitOps compare to gitlab's gitOps for kubernetes?

ArgoCD seems to be a crd on your cluster, to keep everything in check at all times, but I'm not sure that's needed or a positive. What other big differences are there?

Are there any other good gitOps solutions for kubernetes out there?

https://redd.it/f91123
@r_devops