# chrony を Homebrew, apk, apt, dnf, MacPorts, Nix, pacman, zypper でインストール chrony のインストール経路、実行ファイル、メタデータ、AI エージェント向けセキュリティノートを確認します。 ## インストール ```sh sudo av install brew:chrony ``` 追加のインストールコマンド: ### macOS - Homebrew (100%): ```sh brew install chrony ``` 証拠: local Homebrew formula metadata - MacPorts (94%): ```sh sudo port install chrony ``` 証拠: MacPorts ports tree: sysutils/chrony/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ### Linux - apk (92%): ```sh sudo apk add chrony ``` 証拠: Alpine Linux edge package indexes: chrony from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz - Debian apt (92%): ```sh sudo apt install chrony ``` 証拠: Debian stable package indexes: chrony from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz - dnf (92%): ```sh sudo dnf install chrony ``` 証拠: Fedora Rawhide package metadata: chrony from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst - Nix (92%): ```sh nix profile install nixpkgs#chrony ``` 証拠: nixpkgs package indexes: pkgs/by-name/ch/chrony/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 - pacman (92%): ```sh sudo pacman -S chrony ``` 証拠: Arch Linux sync databases: chrony from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz - zypper (92%): ```sh sudo zypper install chrony ``` 証拠: openSUSE Tumbleweed package metadata: chrony from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst ## パッケージ情報 - **パッケージキー:** brew:chrony - **パッケージマネージャ:** Homebrew - **バージョン:** 4.8 - **ソース概要:** Versatile implementation of the Network Time Protocol (NTP) - **ホームページ:** - **最終更新:** 2026-07-10T13:05:06-04:00 - **生成日時:** 2026-08-03T19:37:03+00:00 ## 実行可能ファイル - chronyc (エイリアス) - chronyd (エイリアス) ## インストール挙動 - Bottle: 利用不可 ## バージョンと鮮度 - ページ生成日: 2026-08-03 - マネージャ版: 4.8 ## プロジェクトの歴史と使われ方 chrony is a long-running GPLv2 implementation of NTP with a daemon, chronyd, and a control CLI, chronyc, designed for accurate clock synchronization under difficult real-world network and hardware conditions. ### プロジェクトの歴史 The official site says chrony was originally written by Richard Curnow and is currently maintained by Miroslav Lichvar. Its release archive reaches back to the 1.x series, and the current source repository is hosted on GitLab. chrony was designed to work well with intermittent network access, congested networks, temperature-sensitive clocks, systems that suspend or do not run continuously, and virtual machines. ### 採用の歴史 The official download page says most Linux distributions and BSD systems provide a chrony package and recommends using those packages because they are integrated with service files and networking scripts. The supplied package facts list broad packaging across apk, Homebrew, Debian, dnf, MacPorts, Nix, pacman, Ubuntu, and zypper. ### 使われ方 chronyd runs as the time-synchronization daemon, while chronyc monitors and changes daemon parameters. A common configuration points chrony.conf at NTP servers or pools, stores drift, allows initial clock stepping, and may use /etc/chrony.keys for symmetric-key authentication. ### パッケージ好きにとっての重要性 chrony is a classic system package: small, daemon-oriented, security-sensitive, and heavily integrated with init systems and distribution defaults. It is also one of the packages where downstream packaging choices matter because service users, default config paths, network-online behavior, and crypto support affect the correctness of the system clock. ### タイムライン - 2000s: 1.x tarballs available in the official release archive. - 2020: 4.0 series began after the 3.x line. - 2024: 4.6 added newer NTP and PTP-related configuration options. - 2025: 4.7 added systemd Type=notify support and other daemon improvements. - 2025: 4.8 released as the latest stable release on the official download page. ### Related projects - Related projects and alternatives include ntp, ntpsec, OpenNTPD, systemd-timesyncd, pool.ntp.org, GPS/PPS reference-clock tooling, and Network Time Security implementations. ### ソース - - - - - - ## セキュリティノート chrony に一致するローカルシークレット処理マニフェストは見つかりませんでした。将来の対応で安定したパッケージ URL を使えるよう、Nucleus パッケージメタデータはここに公開されています。 ## Configuration and credential file locations These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval. ## Configuration files - Unix: /etc/chrony.conf ## Credential files - Unix: /etc/chrony.keys ## 他のパッケージマネージャ記録 - Debian apt - chrony - 4.6.1-3+deb13u2: normalized package name match | Debian stable package indexes: chrony from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | Versatile implementation of the Network Time Protocol | https://chrony-project.org - Nix - chrony: normalized package name match | nixpkgs package indexes: pkgs/by-name/ch/chrony/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 - Ubuntu apt - chrony - 4.5-1ubuntu4: normalized package name match | Ubuntu 24.04 LTS package indexes: chrony from https://archive.ubuntu.com/ubuntu/dists/noble/main/binary-amd64/Packages.gz | Versatile implementation of the Network Time Protocol | https://chrony-project.org - apk - chrony - 4.8-r7: normalized package name match | Alpine Linux edge package indexes: chrony from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz | NTP client and server programs (without NTS and SHA/AES) | https://chrony-project.org/ - apk - chrony-common - 4.8-r7: normalized package name match | Alpine Linux edge package indexes: chrony-common from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz | NTP client and server programs (common files) | https://chrony-project.org/ - apk - chrony-dbg - 4.8-r7: normalized package name match | Alpine Linux edge package indexes: chrony-dbg from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz | NTP client and server programs (debug symbols) | https://chrony-project.org/ - apk - chrony-doc - 4.8-r7: normalized package name match | Alpine Linux edge package indexes: chrony-doc from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz | NTP client and server programs (documentation) | https://chrony-project.org/ - apk - chrony-nts - 4.8-r7: normalized package name match | Alpine Linux edge package indexes: chrony-nts from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz | NTP client and server programs (with NTS and SHA/AES) | https://chrony-project.org/ - apk - chrony-openrc - 4.8-r7: normalized package name match | Alpine Linux edge package indexes: chrony-openrc from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz | NTP client and server programs (OpenRC init scripts) | https://chrony-project.org/ - dnf - chrony - 4.8-7.fc45: normalized package name match | Fedora Rawhide package metadata: chrony from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst | An NTP client/server | https://chrony-project.org - pacman - chrony - 4.8-3: normalized package name match | Arch Linux sync databases: chrony from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz | Lightweight NTP client and server | https://chrony-project.org/ - zypper - chrony - 4.8-3.1: normalized package name match | openSUSE Tumbleweed package metadata: chrony from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst | System Clock Synchronization Client and Server | https://chrony-project.org/ - zypper - chrony-pool-empty - 4.8-3.1: normalized package name match | openSUSE Tumbleweed package metadata: chrony-pool-empty from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst | Empty pool preconfiguration for chrony | https://chrony-project.org/ - zypper - chrony-pool-openSUSE - 4.8-3.1: normalized package name match | openSUSE Tumbleweed package metadata: chrony-pool-openSUSE from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst | Chrony preconfiguration for openSUSE | https://chrony-project.org/ - zypper - chrony-pool-suse - 4.8-3.1: normalized package name match | openSUSE Tumbleweed package metadata: chrony-pool-suse from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst | Chrony preconfiguration for SUSE | https://chrony-project.org/ - MacPorts - chrony: normalized package name match | MacPorts ports tree: sysutils/chrony/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ## Combined YAML source View the package source record on GitHub. [combined/chrony.yml](https://github.com/mxcl/pkgdb/blob/main/combined/chrony.yml) ## ソース - pkg.so package database - Geiger risk classifier - curated configuration and credential file locations - curated package history - pkgdb category and tag curation - external package-manager database matches - cross-ecosystem install command graph