介绍⌗

hostctl 是一款基于 Go 开发的用于管理 /etc/hosts 的跨平台 CLI 工具。

  • 支持按 profile 管理域名映射
  • 支持启用或禁用域名映射
  • 使用 .etchosts 文件为项目定制域名映射
  • 支持读取 Docker 或 Docker Compose 的容器，并映射到 /etc/hosts

安装⌗ 

brew install guumaster/tap/hostctl

使用⌗ 

hostctl

hostctl is a CLI tool to manage your hosts file with ease.
You can have multiple profiles, enable/disable exactly what
you need each time with a simple interface.

Usage:
  hostctl [command]

Available Commands:
  add         Add content to a profile in your hosts file.
  backup      Creates a backup copy of your hosts file
  disable     Disable a profile from your hosts file.
  enable      Enable a profile on your hosts file.
  help        Help about any command
  list        Shows a detailed list of profiles on your hosts file.
  remove      Remove a profile from your hosts file.
  replace     Replace content to a profile in your hosts file.
  restore     Restore hosts file content from a backup file.
  status      Shows a list of profile names and statuses on your hosts file.
  sync        Sync some system IPs with a profile.
  toggle      Change status of a profile on your hosts file.

Flags:
  -c, --column strings     Column names to show on lists. comma separated
  -h, --help               help for hostctl
      --host-file string   Hosts file path (default "/etc/hosts")
      --no-color           force colorless output
  -o, --out string         Output type (table|raw|markdown|json) (default "table")
  -q, --quiet              Run command without output
      --raw                Output without borders (same as -o raw)
  -v, --version            version for hostctl

Use "hostctl [command] --help" for more information about a command.

获取当前 /etc/hosts 列表：

hostctl list
+---------+--------+-----------------+---------------+
| PROFILE | STATUS |       IP        |    DOMAIN     |
+---------+--------+-----------------+---------------+
| default | on     | 127.0.0.1       | localhost     |
| default | on     | 255.255.255.255 | broadcasthost |
| default | on     | ::1             | localhost     |
+---------+--------+-----------------+---------------+

增加新的域名解析记录：

sudo hostctl add domains betterde www.betterde.com api.betterde.com
[✔] Domains 'www.betterde.com, api.betterde.com' added.

+----------+--------+-----------+------------------+
| PROFILE  | STATUS |    IP     |      DOMAIN      |
+----------+--------+-----------+------------------+
| betterde | on     | 127.0.0.1 | www.betterde.com |
| betterde | on     | 127.0.0.1 | api.betterde.com |
+----------+--------+-----------+------------------+

还可以通过命令行设置启用或禁用某个 profile 下的解析记录：

sudo hostctl disable betterde
+----------+--------+-----------+------------------+
| PROFILE  | STATUS |    IP     |      DOMAIN      |
+----------+--------+-----------+------------------+
| betterde | off    | 127.0.0.1 | www.betterde.com |
| betterde | off    | 127.0.0.1 | api.betterde.com |
+----------+--------+-----------+------------------+

Docker⌗

该工具不仅能简单的操作 /etc/hosts 还能获取 Docker 或 Docker Compose 中的容器，并同步到 /etc/hosts 文件中:

docker ps
CONTAINER ID   IMAGE            COMMAND                  CREATED      STATUS          PORTS                                      NAMES
ad87448499f6   traefik:latest   "/entrypoint.sh --ap…"   4 days ago   Up 46 minutes   0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp   traefik

sudo hostctl sync docker traefik
+---------+--------+-------------+-------------+
| PROFILE | STATUS |     IP      |   DOMAIN    |
+---------+--------+-------------+-------------+
| traefik | on     | 10.8.10.254 | traefik.loc |
+---------+--------+-------------+-------------+

sudo hostctl sync docker-compose zitadel --compose-file docker-compose.yaml
hostctl list
+----------+--------+-----------------+------------------+
| PROFILE  | STATUS |       IP        |      DOMAIN      |
+----------+--------+-----------------+------------------+
| default  | on     | 127.0.0.1       | localhost        |
| default  | on     | 255.255.255.255 | broadcasthost    |
| default  | on     | ::1             | localhost        |
+----------+--------+-----------------+------------------+
| betterde | off    | 127.0.0.1       | www.betterde.com |
| betterde | off    | 127.0.0.1       | api.betterde.com |
+----------+--------+-----------------+------------------+
| traefik  | on     | 10.8.10.254     | traefik.loc      |
+----------+--------+-----------------+------------------+
| zitadel  | on     | 10.8.10.3       | zitadel.loc      |
| zitadel  | on     | 10.8.10.2       | cockroachdb.loc  |
+----------+--------+-----------------+------------------+
  • 同步时默认使用 .loc 作为 TLD，你可以通过 --domain 来指定自己的 TLD；
  • 在同步 Docker Compose 的容器时，hostctl 只找当前目录下的 docker-compose.yml 文件，如果不是这个文件名则需要使用 --compose-file 指定。

总结⌗

上手体验后我就开始反思，为什么在看到这个工具前，我没有想到，还能够通过这种方式管理 /etc/hosts，相较于用 vim 编辑 /etc/hosts 真的太省事了！

目前该工具还在持续开发中，未来还会支持 Kubernetes 的 Namespace 下的资源同步，持续关注吧！

I hope this is helpful, Happy hacking…