Fly.io 免费计划包含：

• 共3个单核256兆内存的应用和机器
• 共3GB的持久化卷
• 160GB出站数据

详情：https://fly.io/docs/about/pricing/#free-allowances

部署

注意：部署前请创建一个空文件夹，操作都在该文件夹内进行，生成的文件请妥善保存。

1. 安装 flyctl 并登录

   flyctl 用于操作 Fly.io 部署服务

   bash

   # macos 方式1
   $ brew install flyctl
   # macos 方式2
   $ curl -L https://fly.io/install.sh | sh
   # linux
   $ curl -L https://fly.io/install.sh | sh
   # windows
   $ powershell -Command "iwr https://fly.io/install.ps1 -useb | iex"
   
   # 登录
   $ flyctl auth signup

2. 创建 Dockerfile

   docker

   # Dockerfile
   FROM umputun/remark42

3. 部署

   执行: flyctl launch

   填写应用名，这个名称不能更改，并且 fly.io 会分配一个域名 .fly.dev，所以慎重，我推荐：<服务名称>-<个人名称>

   选择部署区域，推荐选日本，可以在这个网站测试 liveview-counter.fly.dev 你点加号看下边哪个地区数字有变化

   是否立即部署，否

   文件夹下会生成 fly.toml

   bash

   $ flyctl launch
   Update available 0.0.456 -> v0.0.458.
   Run "flyctl.exe version update" to upgrade.
   Creating app in remark42
   Scanning source code
   Detected a Dockerfile app
   ? Choose an app name (leave blank to generate one): remark42-alamiao
   automatically selected personal organization: alamiao
   ? Choose a region for deployment: Tokyo, Japan (nrt)
   Created app remark42-alamiao in organization personal
   Admin URL: https://fly.io/apps/remark42-alamiao
   Hostname: remark42-alamiao.fly.dev
   ? Would you like to set up a Postgresql database now? No
   ? Would you like to set up an Upstash Redis database now? No
   Wrote config file fly.toml
   ? Would you like to deploy now? No
   Your app is ready! Deploy with `flyctl deploy`

4. 设置 Docker 环境变量

   打开 fly.toml 在 env 下加入环境变量，参考 remark42 教程里给的 docker compose 环境变量

   bash

   [env]
     REMARK_URL = "https://remark42-alamiao.fly.dev"
     SECRET = "123456"
     TZ = "Asia/Shanghai"

5. 使用持久卷

   地区必须和上边的地区一样，flyctl regions list 可以看到

   注意：删除应用时会一并删除持久卷

   bash

   # flyctl vol create <卷名> -s <大小，单位GB> -r <地区>
   $ flyctl vol create remark42_data -s 1 -r nrt

   fly.toml 加入 mounts

   bash

   [env]
   ...
   
   [mounts]
     destination = "/srv/var"
     source = "remark42_data"

   最终配置是这样的

   bash

   # fly.toml file generated for remark42-alamiao on 2023-02-17T17:05:21+08:00
   
   app = "remark42-alamiao"
   kill_signal = "SIGINT"
   kill_timeout = 5
   processes = []
   
   [env]
     REMARK_URL = "https://remark42-alamiao.fly.dev"
     SECRET = "123456"
     TZ = "Asia/Shanghai"
   
   [mounts]
     destination = "/srv/var"
     source = "remark42_data"
   
   [experimental]
     auto_rollback = true
   
   [[services]]
     http_checks = []
     internal_port = 8080
     processes = ["app"]
     protocol = "tcp"
     script_checks = []
     [services.concurrency]
       hard_limit = 25
       soft_limit = 20
       type = "connections"
   
     [[services.ports]]
       force_https = true
       handlers = ["http"]
       port = 80
   
     [[services.ports]]
       handlers = ["tls", "http"]
       port = 443
   
     [[services.tcp_checks]]
       grace_period = "1s"
       interval = "15s"
       restart_limit = 0
       timeout = "2s"

6. 部署

   flyctl deploy

   等命令执行结束，去 fly.io 的 dashboard 上就能看到了，访问地址: https://remark42-alamiao.fly.dev/web/

   到这步你能打开页面但是不能登录评论系统，篇幅有限 OAuth 相关的我没写，想看的话在下方留言，或者参考：史上最全Remark42评论系统安装教程

7. 自定义域名（可选）

   dashboard 应用里左边选 Certificates，需要在域名解析下添加一条 txt 记录，txt 记录验证完删了就行

Remark42 备份文件传输

https://remark42.com/docs/backup/restore/

# 进入应用内
$ flyctl ssh console
# 上传文件到 webdav，可以用坚果云或者自己搭建 cloudreve 之类的服务，我用的 seafile
$ curl --user <username>:<password> http://<webdav地址>/remark42/backup-remark-20230217.gz -T /srv/var/backup/backup-remark-20230217.gz
# 下载备份文件到 fly.io
$ curl --user <username>:<password> http://<webdav地址>/remark42/backup-remark-20230217.gz > backup-remark-20230217.gz

# 还原前需要设置环境变量 ADMIN_PASSWD
$ restore -f /backup-remark-20230217.gz -s remark
$ rm -rf backup-remark-20230217.gz