Day 7: Package Manager and Systemctl 🚀
Hello DevOps enthusiasts! 👋 Welcome to Day 7 of the #90DaysOfDevOps challenge. Today, we're exploring package management and service control using systemctl.
Task Solutions 💻
1. Docker Installation
# Ubuntu
sudo apt update
sudo apt install docker.io
# CentOS
sudo yum install docker
# Verify installation
docker --version
systemctl status docker
2. Jenkins Installation
# Ubuntu
wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add -
sudo sh -c 'echo deb https://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'
sudo apt update
sudo apt install jenkins
# Verify installation
jenkins --version
systemctl status jenkins
3. Service Management
# Check Docker status
sudo systemctl status docker
# Stop Jenkins
sudo systemctl stop jenkins
# Enable services
sudo systemctl enable docker
sudo systemctl disable jenkins
# Check logs
sudo journalctl -u docker
sudo journalctl -u jenkins
Package Management Commands 🔧
APT (Ubuntu/Debian)
sudo apt update # Update package list
sudo apt install pkg # Install package
sudo apt remove pkg # Remove package
sudo apt upgrade # Upgrade packages
YUM (CentOS/RHEL)
sudo yum update # Update package list
sudo yum install pkg # Install package
sudo yum remove pkg # Remove package
sudo yum upgrade # Upgrade packages
Systemctl Commands 🛠️
systemctl start service # Start service
systemctl stop service # Stop service
systemctl restart service # Restart service
systemctl enable service # Start on boot
systemctl disable service # Don't start on boot
systemctl status service # Check status
Key Takeaways 💡
- Package managers simplify software installation
- Systemctl manages system services
- Service logs help in troubleshooting
- Boot-time service management is crucial
Linux #DevOps #Docker #Jenkins #90DaysOfDevOps
This is Day 7 of my #90DaysOfDevOps journey. Keep learning and managing services!
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