Telnet

I need step by step guide to install telnet on redhat

Note: i have installed redhat enterprise now and i don't know if i need packages for installation.

https://redd.it/limsq9
@r_devops

Hashi Boundary vs. Teleport vs. StrongDM

Is anyone using these tools to manage cloud application access? I am wondering what people like or dislike about these tools or if any of them are any good.

https://redd.it/lijoit
@r_devops

Creating custom dashboards with Grafana

With Grafana you can create custom dashboards that will display all data about the performance of your app in an easy-to-read way for the use of both developers and business. Another part of my colleague's series for DevOps and backend developers on using Prometheus, Kubernetes and Grafana for app optimization with metrics. Let me know what you think - I can pass questions to the authors.

https://redd.it/lih71h
@r_devops

Help me speed up loading artifacts into multiple container images during CICD process

DevOps/System design question for you all...

​

Here's my conondrum:

\- I have a monolith project. It's old, over 10+ years Symfony (php) project.

\- In the repo it contains multiple "applications" with a shared lib

structure. There are 6 apps in total to make up the one total

project. These are containerized in a php-fpm/nginx docker service combo for each app.

\- Separating these into separate repos has become a massive project, and the benefits, added complexity, and developer headache has proven a "no-go" at my company. We tried putting the shared components into git sub-repo's but again the complexity of local developer workflows has suffered doing it like this.

​

So, I'm left with this large monorepo. In the end I'm building 6 different container images out of it when CICD runs.

​

**My problem:** The build time is so long because I'm copying the built/deliverable code into the deployment container images every time the CICD process runs (every commit). My container build step is over 12 minutes: this has proven to be stressful on me in times that emergency patching is needed in production (rare, but it does happen).

​

**MY QUESTION:** Given the fact that the business will "not" allocate the time/energy/labor hours to splitting this monorepo (and the team of devs don't want it either). **What's the BEST PRACTICE design decision here?** Should I leave it as-is and just tell them that's the cost of having a large monorepo? Should I continue to try and force "microservicing" this project?

​

**One option I had in mind:** Don't add the built code into the final images, instead store the code on the server and load as a volume. The problem with this is you lose out on the portability, immutability, and "best-practice" design of containerization.

​

Thanks for any insights and expertise on how I can/should redesign this process.

https://redd.it/ligse3
@r_devops

A few Terraform questions

I've been learning Terraform as I go along developing a cluster in OpenStack, and I'm loving it so far! However I have a few questions regarding my situation.

Context

I am building a distributed computing cluster for academic use, with the HTCondor batch scheduler sitting atop to manage job submissions. This means the architecture has a control plane instance, submit/login instance, and various worker instances (there are other instances in the cluster as well, like proxies and an LDAP server). These worker instances all have the exact same configuration, the only difference is flavor (as we have different GPU nodes). I also use "remote-exec" to do post-provision configuration like setting the IP's of the proxies and LDAP server dynamically.

Question 1: How can I avoid or at least limit repetition in the worker node configurations?

Right now, I have multiple terraform config files, each with their own worker node resource (ex. worker-980ti, worker-1080ti, etc) and as stated, the only difference is the flavor. They are all built atop a prebuilt VM image that I created in Packer, and the rest of the fields are exactly the same.

Question 2: What is the best way to do post-provision configuration?

I know there are options like Ansible and Chef to do this, but I was trying to see how much I could accomplish with just Terraform. However, I have \~25 lines in each remote-exec (copy-pasted between workers - heinous, I know, but exactly why I'm asking for help!) and it is difficult to maintain when I need to make changes.

I first figured I could make a script and just call said script, but some of the remote-exec is setting dynamic information from Terraform itself like instance IP's which I can't easily reference in the script.

Then I was looking at cloud-init, which seems to be what Terraform recommends as the go-to way of doing post-provision configuration, but I have the same issue as above where I'm not sure how/if I can reference my dynamic Terraform information within a cloud-init, so any assistance or suggestions on that front would be greatly appreciated.

https://redd.it/lifd97
@r_devops

Training

Hello I am currently in I.T. I am very burned out and stagnant looking for a career change. What is the best way to get involved in Devops? Thank you in advance for any help.

https://redd.it/lif8cy
@r_devops

I've created an awesome-istio repository to get together of istio & service mesh related things

Hi everyone,

I've created an awesome-istio repository to get together of istio & service mesh related things.

Contributions are welcome.

https://github.com/mstrYoda/awesome-istio

https://redd.it/ljp2su
@r_devops

Looking for APM for webapps, NodeJs, serverless functions (netlify)

Hi, I’m looking for recommendations for an APM / logging / alerting SaaS

Goals:

- send logs / errors from web apps, nodejs
- alerting capabilities (i.e. if error type X send slack notif etc)

Any thoughts?

So far I found https://www.instana.com/

Thank you

https://redd.it/ljq7vf
@r_devops

How do you promote code to environments?

Eager to learn about various approaches and adopt one of them.

Currently, I struggle with branch per environment approach where:

1. Developer pushes code to the dev branch.
2. Github Actions build code, pushes the image to the registry, and pushes built code to the staging branch where it gets applied to the staging cluster ArgoCD which monitors the staging branch.
3. If all is good, code is promoted to the main branch via PR and automatically applied to the production cluster with ArgoCD which monitors the main branch.

How do you do CI and promote code to production?

https://redd.it/ljlrsy
@r_devops

How "Free" are the cloud services?

I want to spin up a few VMs and try a few features in cloud. Does the AWS, Azure or GCP really have any truly free service? The last time I spun a few VMs to try few things on AWS they charged me few $$ after 2 weeks. I did not upload any data, now AWS is chasing me.

Most of these cloud providers give credits to explore their services, but are they really free?

https://redd.it/lk58yj
@r_devops

Docker on Windows (WSL 2) without Docker Desktop

I like to use Docker now and then on my Windows machine. While Docker Desktop is quite clever, I don't like to have it constantly running, and the slow startup time is troublesome. After some experimenting, I have the Docker daemon running in one of my WSL 2 instances, and other instances can access the shared Docker socket just fine.

For those who dabble in Docker on their Windows machine, perhaps you will find my notes interesting:

Instead of using an init system such as systemd to launch the Docker daemon, launch it by calling `dockerd` manually. This can even be auto-launched.
If sharing the Docker daemon between WSL instances is desired, configure it to use a socket stored in the shared /mnt/wsl directory.
If sharing and privileged access without sudo are desired, configure the `docker` group to have the same group ID across all WSL instances.
Rather than launch a Windows-based Docker client, launch docker inside WSL. A convenience Powershell function is an option for doing this, if docker from Powershell is desired.

A much more detailed and careful explanation.

I welcome your thoughts.

https://redd.it/lk27wb
@r_devops

Creating CICD pipeline to deploy to AWS

I am trying to design a CICD that can deploy Cloudformation via Jenkins. I am thinking I need the following scripts:

A script to assume the role into the account.
A script to compile the template (eg injecting a lambda into Cloudformation or creating a s3 bucket to upload the zip)
A script to validate if the stack compiled correctly

A script to deploy the stack

Do I need to pass the IAM user credentials in each stage of the pipeline? If so how can I create a persistent environment with such information? How can I upload the lambda for instance into s3 and inject the information into the lambda resource? Do I need an IAM user or role to do the same?

https://redd.it/ljzro1
@r_devops

Blog This week is the end of the AWS RDS Postgres 9.5 and Istio 1.7. New release of the HashiCorp Boundary, Istio and Kubernetes.

Hello,

A few weeks ago I started the weekly news. I basically check the news from the last week and create a "batch" news. It also has a reminder section, that's where I put the reminders from end-of-life/support, critical security patches, etc.

Feedbacks/suggestions/* are always welcome :)

See on Medium: https://medium.com/news-updates-and-reminders-cloud-devops-sre-chaos/week06-news-updates-reminders-aws-hashicorp-istio-kubernetes-linux-761e326001db?sk=cd7117bb380d11991190a35ac54b241b

​

See on my Website: https://www.lozanomatheus.com/post/week06-news-updates-reminders-aws-hashicorp-istio-kubernetes-linux

https://redd.it/ljzhxf
@r_devops

What internal tools have you built around prometheus?

What do they do and how easy were they to build?

https://redd.it/ljwxwo
@r_devops

Change Position (Small Org)

Hi Everyone!

I’m looking for some advice about my career if possible. I currently work for a small SME (UK based) and have 1/2 years experience in the industry. I’m basically a single person Ops team working with two devs who have very little influence on the Ops side. In a previous job, I worked for a startup, so don’t really have much experience working in a large Org/business on a large set of infrastructure. Have I shot myself in the foot? Should I change companies? I’m wanting to eventually move to a large org in an architect level position.

https://redd.it/ljvtam
@r_devops

AWS or GCP new career in Japan DEVOPS

I'm looking to change my career path from IT onsite infrastructure to DEVOPS. (Currently working in tokyo as IT onsite engenieer)

According to my understanding because the trends in the near future GCP will dominate the spectrum that now is leading AWS, but in Japan, I cannot find a single job hiring position involving GCP. I need to take a desition asap while finish my CCNA.

Need some help and guidance for my new path. Hope someone can share thoughts and advice.


Cheers.

https://redd.it/lkc1uq
@r_devops

What "cloud native" is really good for?

This is a honest question, I swear. There are tons of marketing slides explaining the "benefits of cloud native approach", but my question is - what is it really good for? Like for your project/product/company - what specifically have you gained by going cloud-native?

https://redd.it/lkbx9e
@r_devops

When is it wise to switch back from serverless?

Cost can become an issue with serverless functions especially for constant large-scale loads
Performance is not optimal (even with all the magic serverless functionality to support computes)

​

>When certain functionalities are getting used really frequently and their performance is not that great for the consuming users or client microservices, while costs can be lower in terms of cloud resource usage for a certain workload, and when the application is proven and parts of it can be carved in delimited microservices, that is the time.
>
>Microservices are faster and cheaper but it takes more to build and modify them. So both serverless and microservices have their place in an event driven organization of systems.
>
>\- Nicolae Marasoiu

Anything else? I know you've got an opinion - let's see it,

https://redd.it/lkd6ku
@r_devops

Advice Request Infrastructure + Configuration + Deployment Management Stack

Hi all,

I am strating to automate the infrastructure and the configuration for a personal project. And I am using the following tools:

Terraform: AWS EC2 instances, RDS and other resources management (creation, destruction etc..)
Ansible: Configuration management (installing all the required packages)
K8s: Apps deployment
Jenkins: CI/CD with Gitlab

I want to know what do you guys think about this stack? Are better ways to do what I want to acheive? I am not a devops expert and I want to have a reference from more experienced folks.

Thanks in advance

https://redd.it/lkenwy
@r_devops

How to improve?

Hi!
How do you guys improve yourselves for your job? does your company give you any tools/resources to do so? how did you guys manage or managed when you started working?

https://redd.it/lkea0p
@r_devops

The role of "Devops Engineer" in 2021?

Hi all! I'm going to be interviewed for a position with title Devops Engineer, which is a bit controversial since devops should be a practice/way of working instead of separate role or position. Based on the requirements on job ad, it looks more like a cloud infrastucture engineer since technologies like AWS, Kubernetes, Terraform etc. were mentioned alongside CI/CD, Golang, ELK etc.


The question is, what would you expect from a role like this in 2021 and what questions would you ask to clarify the job responsibilities? I have a background in backend development with lots of cloudy+devopsy stuff which I like, but I like coding a lot too and wouldn't want to drop it completely.

https://redd.it/lkcakv
@r_devops