How do you create a mirrored LVM volume in Ubuntu?
Anonymous Quiz
64%
Use 'lvcreate -m1 -L size -n lv_name vg_name'
23%
Run 'lvmirror create -volume'
4%
Type 'mirrorlv -setup'
9%
Use 'lvcreate -mirror'
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DevOps_1738852112.pdf
1.3 MB
#AWS
AWS troubleshooting guide
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AWS troubleshooting guide
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How do you enable packet forwarding permanently in Ubuntu?
Anonymous Quiz
77%
Edit '/etc/sysctl.conf' and set 'net.ipv4.ip_forward=1', then run 'sysctl -p'
7%
Run 'enableforward -perm'
5%
Type 'netforward persist'
10%
Use 'sysctl forward-permanent'
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Terraform_Projects_DevOps_Shack_1739124110.pdf
644.4 KB
#Terraform
Terraform projects
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Terraform projects
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What do you mean by Node Controller?
Anonymous Quiz
81%
Node controller are the group of services which were running in the Kubernetes Master
19%
Node controller are the group of services which were running in the Kubernetes Swarm
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GIT_Commands_1738866866.pdf
582.4 KB
#Git
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Which policy must be applied to an ImageStream to automatically deploy the latest Docker image upon an update?
Anonymous Quiz
33%
RollingPolicy
34%
LatestOnly
12%
Automatic
21%
ImageChangePolicy
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DevOps_Shack_10_Docker_Projects_to_Master_Docker_1739206364.pdf
1.3 MB
#Docker
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Popular Redis Use Cases
1. Caching
The most common use case is to utilize Redis for caching. This helps protect the database layer from overloading. Redis offers fast lookup for cached data and can help improve application performance.
2. Session Store
We use Redis to share user session data among stateless servers. Redis provides a centralized place to store session dat and makes it easy to scale out servers.
3. Distributed lock
We use Redis distributed locks to grant mutually exclusive access to shared resources. This prevents race conditions in distributed systems. Redis locks are easy to implement and automatically expire.
4. Counter and Rate Limiter
We use Redis to track like counts, view counts etc on social media apps. Redis counters provide atomic increments/ decrements. We also use Redis to enforce rate limits on our API endpoints. This helps prevent abuse.
5. Leaderboard
Sorted sets make it easy to implement gaming leaderboards in Redis. We can add, update, or remove users from the leaderboard and query ranges efficiently.
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DevOps_Shack_Prometheus_and_Grafana_Errors_Solutions_1739417248.pdf
1.3 MB
#Prometheus
Prometheus and Grafana Errors & Solutions
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Prometheus and Grafana Errors & Solutions
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Which command is used to search for a package in the Ubuntu repositories?
Anonymous Quiz
77%
Use 'apt search package_name'
16%
Run 'findpkg package_name'
3%
Type 'searchpkg'
3%
Use 'pkgfinder'
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Kubernetes_Networking_1739467692.pdf
2.9 MB
#Kubernetes
Introduction to Kubernetes networking
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Introduction to Kubernetes networking
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What is the purpose of the `FROM` instruction in a Dockerfile?
Anonymous Quiz
85%
It sets the base image for the container
8%
It defines environment variables
3%
It installs packages
4%
It sets the working directory
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DevOps(Document Repository)
Photo
Network Programming with Go.pdf
3.9 MB
#Book
#Go
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#Go
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Forward proxy Vs Reverse proxy
A forward proxy is a server that sits between user devices and the internet. A forward proxy is commonly used for:
- Protect clients
- Avoid browsing restrictions
- Block access to certain content
A reverse proxy is a server that accepts a request from the client, forwards the request to web servers, and returns the results to the client as if the proxy server had processed the request. A reverse proxy is good for:
- Protect servers
- Load balancing
- Cache static contents
- Encrypt and decrypt SSL communications
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How to change the priority of a swap file/partition to 10
Anonymous Quiz
56%
swapon -p 10 /path/to/swapfile
23%
We can't change the priority of swap partions
14%
swapping -P 10 /path/to/swapfile
8%
swapon +10 /path/to/swapfile
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Ansible_1739460293.pdf
5.5 MB
#Ansible
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