7.1 List of Handy Utilities
Working with data in Docker involves a bunch of tasks, like managing volumes, backing up, restoring, monitoring, and analyzing. To make these tasks simpler, there are a variety of tools that help automate and improve data management in Docker containers. In this lecture, we’ll check out some handy utilities for working with data in Docker, their features, and usage examples.
Handy utilities for working with data in Docker:
- Docker Volume Backup/Restore
- Rclone
- Restic
- Minio
- Portainer
- Docker Compose
- Logrotate
7.2 Docker Volume Backup/Restore
This utility makes it super easy to create backups and restore Docker volumes. It's written in Go and is designed to simplify the backup and recovery processes for your data.
Installation:
Download and install the utility from the official GitHub repository:
Terminal
wget https://github.com/offen/docker-volume-backup/releases/download/v0.3.0/docker-volume-backup_0.3.0_linux_amd64.tar.gz
tar -xvzf docker-volume-backup_0.3.0_linux_amd64.tar.gz
sudo mv docker-volume-backup /usr/local/bin/
Creating a backup:
docker-volume-backup backup my_volume my_backup.tar.gz
Restoring from a backup:
docker-volume-backup restore my_backup.tar.gz my_volume
7.3 Rclone
Rclone is a powerful tool for managing files in cloud storage. It supports a ton of cloud services and can be used for syncing data, backups, and recovery.
Installation:
Follow the instructions on the official website to install Rclone on your system:
curl https://rclone.org/install.sh | sudo bash
Configuration:
Set up a connection to your cloud storage:
rclone config
Data sync:
rclone sync /path/to/local/dir remote:bucket
7.4 Restic
Restic is a fast, secure, and efficient utility for data backup. It supports data deduplication and encryption.
Installation:
Download and install Restic:
wget https://github.com/restic/restic/releases/download/v0.12.0/restic_0.12.0_linux_amd64.bz2
bzip2 -d restic_0.12.0_linux_amd64.bz2
chmod +x restic_0.12.0_linux_amd64
sudo mv restic_0.12.0_linux_amd64 /usr/local/bin/restic
Initializing the repository:
restic init --repo /path/to/repo
Creating a backup:
restic -r /path/to/repo backup /path/to/data
Restoring data:
restic -r /path/to/repo restore latest --target /path/to/restore
7.5 Minio
Minio is a high-performance object storage, compatible with S3. It can be used to create local or cloud data storage.
Installation:
Follow the instructions on the official website to install Minio:
wget https://dl.min.io/server/minio/release/linux-amd64/minio
chmod +x minio
sudo mv minio /usr/local/bin/
Running Minio:
minio server /data
Setting up the Minio client:
wget https://dl.min.io/client/mc/release/linux-amd64/mc
chmod +x mc
sudo mv mc /usr/local/bin/
mc alias set myminio http://localhost:9000 minioadmin minioadmin
Uploading data:
mc cp /path/to/data myminio/mybucket
7.6 Portainer
Portainer is a web interface for managing Docker and Docker Swarm. It provides handy tools to manage containers, volumes, and networks.
Installation:
Run the Portainer container:
docker volume create portainer_data
docker run -d -p 9000:9000 --name=portainer --restart=always -v
/var/run/docker.sock:/var/run/docker.sock -v portainer_data:/data portainer/portainer-ce
Accessing the Interface:
Open a web browser and go to http://localhost:9000 to access the Portainer interface.
7.7 Logrotate
Logrotate is a utility for managing log files. It can be used for automatic rotation, compression, and deletion of old logs.
Installation:
Install Logrotate on your system:
sudo apt-get install logrotate
Configuring Logrotate:
Create a configuration file for your logs:
cat <<EOF | sudo tee /etc/logrotate.d/myapp
/var/log/myapp/*.log {
daily
rotate 7
compress
missingok
notifempty
copytruncate
}
EOF
Testing the configuration:
Check the Logrotate configuration:
sudo logrotate -d /etc/logrotate.d/myapp
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