Sisyphus Mirror Py

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A modern Python implementation of the tool for mirroring the Sisyphus repository.

The project is inspired by the original utility sisyphus-mirror.

Technical Requirements

• GNU/Linux OS
• Python 3.12+
• RSync 3.2+
• 110+ GB of free disk space

Installation

# Create dedicated user and directories:
useradd -rMU -d /opt/sisyphus-mirror -s /usr/sbin/nologin sisyphus-mirror
mkdir -p /etc/sisyphus-mirror /opt/sisyphus-mirror /srv/mirrors/altlinux
chown sisyphus-mirror:sisyphus-mirror /opt/sisyphus-mirror
chown sisyphus-mirror:sisyphus-mirror /srv/mirrors/altlinux

# Create Python virtual environment and install the package:
sudo -u sisyphus-mirror python3 -m venv /opt/sisyphus-mirror/venv
sudo -u sisyphus-mirror /opt/sisyphus-mirror/venv/bin/pip install sisyphus-mirror

# Add command
ln -s /opt/sisyphus-mirror/venv/bin/sisyphus-mirror /usr/local/sbin/sisyphus-mirror

# Create TOML configuration file:
echo '[sisyphus-mirror]
dry_run = false
verbose = false
debug = false

# Explicitly defined repository branches.
branch_list = ["p11"]

# Repository source URL.
source_url = "rsync://ftp.altlinux.org/ALTLinux"

# Working directory for snapshots and temporary synchronization data.
working_dir = "/srv/mirrors/altlinux"

# Target CPU architectures.
arch_list = ["noarch", "x86_64", "x86_64-i586"]

# Additional paths for finding and creating hard links to unchanged files.
linkdest_list = []

# Additional file include patterns.
include_files = ["list/**", ".timestamp"]

# Additional file exclude patterns.
exclude_files = ["*debuginfo*", "SRPMS"]

# Maximum number of snapshots per branch.
snapshot_limit = 1

# Limiting network I/O bandwidth.
rate_limit = "5m"

# Connection timeout (seconds).
conn_timeout = 60

# I/O timeout (seconds).
io_timeout = 600' > /etc/sisyphus-mirror/default.toml

Modify configuration if needed:

nano /etc/sisyphus-mirror/default.toml

Test Run

Dry-run synchronization with detailed output:

sudo -u sisyphus-mirror sisyphus-mirror --dry-run --verbose

Ensure that the reported total size fits the available disk space.

Production Run

Actual synchronization:

sudo -u sisyphus-mirror sisyphus-mirror

Systemd Integration

# systemd service unit:
echo '[Unit]
Description=sisyphus-mirror service
Wants=sisyphus-mirror.timer

[Service]
Type=oneshot
User=sisyphus-mirror
Group=sisyphus-mirror
ExecStart=sisyphus-mirror
ProtectHome=true
ProtectSystem=true
SyslogIdentifier=sisyphus-mirror

[Install]
WantedBy=multi-user.target' > /etc/systemd/system/sisyphus-mirror.service

# Daily timer:
echo '[Unit]
Description=Periodic run of sisyphus-mirror

[Timer]
# Run at a random time between 00:15 and 07:45 local server time
OnCalendar=*-*-* 00:15:00
RandomizedDelaySec=7h 30min
Persistent=true
Unit=sisyphus-mirror.service

[Install]
WantedBy=timers.target' > /etc/systemd/system/sisyphus-mirror.timer

# Reloading systemd configuration and activating the timer:
systemctl daemon-reload
systemctl enable --now sisyphus-mirror.timer

Serving via rsyncd

Example for a previously unconfigured rsync installation:

echo 'port = 873
uid = 65534
gid = 65534
# Using chroot is required
use chroot = yes
max connections = 30

[altlinux]
path = /srv/mirrors/altlinux
read only = yes
list = yes' > /etc/rsyncd.conf

systemctl enable rsync
systemctl restart rsync

Serving via Nginx

Example for a previously unconfigured Nginx installation:

echo 'server {
  listen 80 default_server;
  listen [::]:80 default_server;
  server_name _;
  location /altlinux/ {
      alias /srv/mirrors/altlinux/;
      index off;
      autoindex on;
      autoindex_exact_size off;
      autoindex_localtime on;
      try_files $uri $uri/ =404;
  }
}' > /etc/nginx/sites-available/altlinux

rm /etc/nginx/sites-enabled/default
ln -s /etc/nginx/sites-available/altlinux /etc/nginx/sites-enabled/altlinux

systemctl enable nginx
systemctl restart nginx