Add OpenShift page

SNOmad1 · Jul 25, 2021 · 90a50c5 · 90a50c5
1 parent 907312c
commit 90a50c5
Show file tree

Hide file tree

Showing 9 changed files with 99 additions and 70 deletions.
diff --git a/README.md b/README.md
@@ -19,7 +19,7 @@
     <td align="center"><a href="resources/network.md"><img src="images/network.png" width="80x;" height="75px;" alt="Network"/><br /><b>Network</b></a></td>
     <td align="center"><a href="resources/linux.md"><img src="images/linux.png" width="75x;" height="75px;" alt="Linux"/><br /><b>Linux</b></a></td>
     <td align="center"><a href="resources/terraform.md"><img src="images/terraform.png" width="75px;" height="75px;" alt="Terraform"/><br /><b>Terraform</b></a></td>
-    <td align="center"><a href="resources/docker.md"><img src="images/docker.png" width="75px;" height="75px;" alt="Docker"/><br /><b>Docker</b></a></td>
+    <td align="center"><a href="resources/containers.md"><img src="images/container.png" width="75px;" height="75px;" alt="Containers"/><br /><b>Containers</b></a></td>
   </tr>
   <tr>
     <td align="center"><a href="resources/coding.md"><img src="images/coding.png" width="75px;" height="75px;" alt="coding"/><br /><b>Coding</b></a></td>
@@ -194,12 +194,20 @@ Name | Description
 ## Community
 
 Another great way to learn is to learn from the experience of others. For that, the are some excellent DevOps communities.
+
 Name | Comments
 :------|:------:
 [Reddit DevOps](https://www.reddit.com/r/devops) | Reddit DevOps Community 
 [Linkedin DevOps](https://www.linkedin.com/groups/2825397) | Linkedin DevOps Community
 [DevOps Bits](https://www.facebook.com/groups/538897960007080) | Facebook DevOps group. Disclosure: I started it :)
 
+## Conferences
+
+Name | Comments
+:------|:------:
+[DevOpsDays](https://devopsdays.org) | DevOps Conferences around the world
+[Velocity](https://conferences.oreilly.com/velocity) | Oracle's DevOps conference
+
 ## Books
 
 Read book! Practice is important and the best way to learn practical things but reading about cultures, methods, concepts, ... has its own important role in your path towards mastering DevOps and SRE.
@@ -253,9 +261,9 @@ Name | Comments
 
 Name | Comments
 :------|:------:
-[DevOps Exercises](https://github.com/bregman-arie/devops-exercises) | Personally, I think it's pretty decent :)
 [System Design Primer](https://github.com/donnemartin/system-design-primer) | "Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards."
 kdn251 | [Interviews](https://github.com/kdn251/interviews) | 
+[DevOps Exercises](https://github.com/bregman-arie/devops-exercises) | By topic, DevOps related questions and exercises
 
 ## Misc
 
@@ -271,7 +279,7 @@ Name | Description
 [The 12 Factor App](https://12factor.net) | must-read in my opinion 
 [A distributed Systems Reading List](https://dancres.github.io/Pages/?fbclid=IwAR2gapLU03iaxH4NDotc0LD_GiXOkyByfMT3iwufofUOEfCKEVwmezE3vCw)
 
-## DevOps Toolchain
+## DevOps Tooling
 
 - [ ] CI/CD
   - [ ] Jenkins (Managed & on-premise, Containers supported, Plugins)

diff --git a/images/containers.png b/images/containers.png
diff --git a/resources/containers.md b/resources/containers.md
@@ -1,51 +1,36 @@
-## Tools
+## Containers
 
-Name | Description
-:------|:------:
-[dive](https://github.com/wagoodman/dive) | "A tool for exploring a docker image, layer content, ..."
-[trivy](https://github.com/aquasecurity/trivy) | "A Simple and Comprehensive Vulnerability Scanner for Containers and other Artifacts, Suitable for CI."
+### Articles
 
-## Docker - Resources
+Name | Comments
+:------ |:--------:
+[Docker CheatSheet](https://cheatsheet.dennyzhang.com/cheatsheet-docker-a4) |
+[Everything you need to know about containers](https://medium.com/faun/everything-you-need-to-know-about-containers-7655badb4307) |
+[A container networking overview](https://jvns.ca/blog/2016/12/22/container-networking) |
+[My Docker Cheat Sheet](https://medium.com/statuscode/dockercheatsheet-9730ce03630d) |
+[Docker Networking Deep Dive](http://100daysofdevops.com/21-days-of-docker-day-19-docker-networking-deep-dive/?fbclid=IwAR19KJWwhZjulbn7JNbBYLFxKFf-x0v25TSc-_bOJ6YieUND4A6UZcBSUhA) |
 
-Name | Description
-:------|:------:
-[Docker Compose](https://docs.docker.com/compose/overview) | Multi-container applications
-
-## Docker - Checklist
+#### Dockerfile
 
-- [ ] **Images**
-  - [ ] tag
-  - [ ] `docker images` command
 
-- [ ] **Running containers**
-  - [ ] `docker run` command
-  - [ ] `-ti` arguments for interactive terminal
 
-- [ ] **List containers**
-  - [ ] `docker ps` command
-  - [ ] `-a` argument for stopped
-  - [ ] `-l` argument for last stopped
+### Projects
 
-- [ ] **Commit changes**
-  - [ ] `docker commit` command
-  - [ ] `docker tag` command
+Name | Comments
+:------ |:--------:
+[awesome-docker](https://github.com/veggiemonk/awesome-docker) | 
 
-## Nomad - Resources
 
-Name | Description
-:------|:------:
-[Official Introduction](https://www.nomadproject.io/intro/index.html) | Great place for beginners to start learning about Nomad
+#### Cheatsheet
 
-## Nomad - Commands
+* Stop and remove all containers: `docker container stop $(docker container ls -aq)`
+* Run container with bash shell: `docker run -ti ubuntu:latest bash`
+* Check how many containers are running: `docker info`
+* Cleanup everything: `docker system prune -a -f`
 
-Run Nomad agent in development mode (don't use in production):
+### Tools
 
-     sudo nomad agent -dev
-
-See registered Nomad cluster nodes:
-
-     nomad node status
-
-View members of the gossip ring (used to connect all instances together):
-
-     nomad server members
+Name | Description
+:------|:------:
+[dive](https://github.com/wagoodman/dive) | "A tool for exploring a docker image, layer content, ..."
+[trivy](https://github.com/aquasecurity/trivy) | "A Simple and Comprehensive Vulnerability Scanner for Containers and other Artifacts, Suitable for CI."
diff --git a/resources/docker.md b/resources/docker.md
@@ -1,25 +0,0 @@
-# Docker
-
-## Articles
-
-Name | Comments
-:------ |:--------:
-[Docker CheatSheet](https://cheatsheet.dennyzhang.com/cheatsheet-docker-a4) |
-[Everything you need to know about containers](https://medium.com/faun/everything-you-need-to-know-about-containers-7655badb4307) |
-[A container networking overview](https://jvns.ca/blog/2016/12/22/container-networking) |
-[My Docker Cheat Sheet](https://medium.com/statuscode/dockercheatsheet-9730ce03630d) |
-[Docker Networking Deep Dive](http://100daysofdevops.com/21-days-of-docker-day-19-docker-networking-deep-dive/?fbclid=IwAR19KJWwhZjulbn7JNbBYLFxKFf-x0v25TSc-_bOJ6YieUND4A6UZcBSUhA) |
-
-## Projects
-
-Name | Comments
-:------ |:--------:
-[awesome-docker](https://github.com/veggiemonk/awesome-docker) | 
-
-
-### Cheatsheet
-
-* Stop and remove all containers: `docker container stop $(docker container ls -aq)`
-* Run container with bash shell: `docker run -ti ubuntu:latest bash`
-* Check how many containers are running: `docker info`
-* Cleanup everything: `docker system prune -a -f`

diff --git a/resources/git.md b/resources/git.md
@@ -6,3 +6,13 @@ Name | Description
 [Learn git concepts, not commands](https://dev.to/unseenwizzard/learn-git-concepts-not-commands-4gjc) | Article on Git concepts
 [Codeacademy Learn Git](https://www.codecademy.com/learn/learn-git) | Not Free 
 [Git for Computer Scientists](https://eagain.net/articles/git-for-computer-scientists/) |
+
+
+## CheatSheet
+
+* Revert to commit X
+
+```
+git revert --no-commit X..HEAD
+git commit
+```
diff --git a/resources/kubernetes.md b/resources/kubernetes.md
@@ -58,14 +58,18 @@ Name | Comments
 [CKAD-Practice-Questions](https://github.com/bbachi/CKAD-Practice-Questions) | "a consolidated list for CKAD practice questions"
 [CKAD Prep Exam Video](https://www.youtube.com/watch?v=TPXwVmvzlV4&ab_channel=TheFrontOpsGuy) | A video of doing a CKAD prep exam (2020)
 
-## CheatSheet
+### CheatSheet
 
-### Minikube
+#### Minikube
 
 * Minikube version: `minikube version`
 * Start cluster: `minikube start`
 * Delete cluster: `minikube delete`
 
+#### Service Accounts
+
+* List service accounts: `kubectl get serviceaccounts`
+
 ### Kubernetes
 
 * Cluster version: `kubectl version`

diff --git a/resources/linux.md b/resources/linux.md
@@ -16,12 +16,19 @@ Name | Comments
 :------|:------:
 [Linux Filesystem Explained](https://www.linux.com/training-tutorials/linux-filesystem-explained) | NSIA
 
-## Linux Deep Dive - Articles
+## Linux Internals - Articles
 
 Name | Comments
 :------|:------:
 [How are Unix pipes implemented?](https://toroid.org/unix-pipe-implementation) | 
 
+## Linux Internals - Videos
+
+Name | Comments
+:------|:------:
+[Understanding fork() system call for new process creation
+](https://www.youtube.com/watch?v=PwxTbksJ2fo) | 
+
 ## Learn Linux - Videos
 
 Name | Comments

diff --git a/resources/mongo.md b/resources/mongo.md
@@ -25,6 +25,7 @@ Name | Description
 * Show all the document in a collection: `db.COLLECTION_NAME.find({})`
 * Count the number of documents in a collection: `db.COLLECTION_NAME.count()`
 * Remove all the documents from a collection: `db.COLLECTION_NAME.remove({})`
+* Remove field from all documents: `db.COLLECTION_NAME.update({}, {$unset: { FIELD_NAME: ""}}, {multi:true})` 
 * Rename field: ```db.hosts.updateMany( {}, { $rename: { "CURRENT_FIELD_NAME": "NEW_FIELD_NAME" } } )```
 
 #### Mongoexport 

diff --git a/resources/openshift.md b/resources/openshift.md
@@ -0,0 +1,39 @@
+## OpenShift
+
+### Learn OpenShift
+
+Name | Comments
+:------ |:--------:
+[Learn OpenShift](https://learn.openshift.com) | Interactive way to learn OpenShift
+
+### CheatSheet
+
+* Login: `oc login -u my_user -p my_password`
+
+#### Project
+
+* Highlevel overview of the project: `oc status`
+* Create a new project: `oc new-project my_project`
+* List projects: `oc get projects`
+
+#### User
+
+* The username of the user currently logged in: `oc whoami`
+* The OpenShift server currently used: `oc whoami --show-server`
+
+#### Pods
+
+* List pods: `oc get po`
+* List pods with with node info: `oc get po -o wide`
+
+#### Deployments
+
+* List deployments: `oc get deployments`
+
+#### Service Accounts
+
+* List service accounts: `oc get serviceaccounts`
+
+#### Misc
+
+* Login: `oc login --token=<TOKEN> --server=https://<ADDRESS>:<PORT>`