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234 lines
5.7 KiB
Markdown
234 lines
5.7 KiB
Markdown
---
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title: 用duplicacy备份Pleroma
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created: 2023-01-22
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summary: 本地备份 + 异地远端备份
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tags:
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- Pleroma
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---
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## 前言
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- 实现的功能：
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- 本地备份
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- 远端加密备份
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- 定时自动清理备份
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- 关于 duplicacy：
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- [Duplicacy CLI 备份工具基本使用笔记](https://www.dejavu.moe/posts/duplicacy-cli-basic-guide/)
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- [Quick Start · gilbertchen/duplicacy Wiki · GitHub](https://github.com/gilbertchen/duplicacy/wiki/Quick-Start)
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- 存在的问题：
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- 用`root`操作脚本不安全
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- GitHub： [Sevichecc/pleroma-backup-script](https://github.com/Sevichecc/pleroma-backup-script)
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## 需要备份什么内容
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- 上传的文件：`/var/lib/pleroma/upload`
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- 静态文件：`/var/lib/pleroma/static`
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- 数据库：`pleroma.pgdump`
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- 配置文件：`/etc/pleroma/config.exs`
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参考：[Backup/Restore/Move/Remove your instance - Pleroma Documentation](https://docs-develop.pleroma.social/backend/administration/backup/)
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## 备份方式
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### 本地备份：
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如果需要结合 duplicacy 异地备份的话，请直接看异地备份的部分
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原理：复制上述内容到目录： `/opt/pleroma-backup`
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下面是具体的操作，我是在 root 用户下操作的，
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1. 创建备份文件夹并进入
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```bash
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sudo mkdir /opt/pleroma-backup && cd /opt/pleroma-backup
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```
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2. 创建`.env` 文件：
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```bash
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PLEROMA_DB=pleroma
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PLEROMA_PATH=/var/lib/pleroma
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PLEROMA_CONFIG_PATH=/etc/pleroma/config.exs
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BACKUP_PATH=/opt/pleroma-backup
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```
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- PLEROMA_DB: pleroma 数据库的名字
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- PLEROMA_PATH: pleroma 静态文件的位置，下面应该会有`static` 和`uploads` 文件
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- PLEROMA_CONFIG_PATH： pleroma 设置文件的位置
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- BACKUP_PATH：备份文件夹的位置
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3. 创建 shell 脚本
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```bash
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sudo vim backup.sh
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```
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写入：
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```bash
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#!/bin/bash
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source /etc/profile
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source ./.env
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echo `date +"%Y-%m-%d %H:%M:%S"` " now starting backup"
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echo "————————————backup to local directory——————————"
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echo 'stop pleroma'
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sudo systemctl stop pleroma
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echo "1.dump database"
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sudo -Hu postgres pg_dump -d $PLEROMA_DB --format=custom -f ${BACKUP_PATH}/pleroma.pgdump
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echo "2. copy upload & static folder"
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cp -r ${PLEROMA_PATH}/static ${BACKUP_PATH}
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cp -r ${PLEROMA_PATH}/uploads ${BACKUP_PATH}
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echo "3. copy config file"
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cp ${PLEROMA_CONFIG_PATH} ${BACKUP_PATH}
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echo "restart pleroma"
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sudo systemctl start pleroma
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echo `date +"%Y-%m-%d %H:%M:%S"` " done!"
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```
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运行脚本：
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```bash
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sudo bash backup.sh
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```
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### 异地备份
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方式：使用 duplicay 备份到远端存储中，我这里用的是 contabo storage，推荐 cloudflare 的 R2，但我不清楚如何配置……
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在开始之前，确保按照[Duplicacy CLI 备份工具基本使用笔记](https://www.dejavu.moe/posts/duplicacy-cli-basic-guide/) 安装好了 duplicacy，然后进入到备份文件夹中(下为`/opt/pleroma-backup`)
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#### 1. 初始化
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这里设置 duplicacy Snapshot ID 为 pleroma，bucket 名为`pleroma`
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```bash
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# contabo storage
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sudo duplicacy init -e pleroma s3c://usc1@usc1.contabostorage.com/pleroma
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```
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然后输入密码，如 1234
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其他平台： [Supported storage backends - How-to - Duplicacy Forum](https://forum.duplicacy.com/t/supported-storage-backends/1107)
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#### 2. 创建脚本：
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```bash
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sudo vim backup.sh
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```
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写入：
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```bash
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#!/bin/bash
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source /etc/profile
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source ./.env
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echo `date +"%Y-%m-%d %H:%M:%S"` " now starting backup"
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echo 'stop pleroma'
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sudo systemctl stop pleroma
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echo "————————————backup to local directory——————————"
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echo "1.dump database"
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sudo -Hu postgres pg_dump -d $PLEROMA_DB --format=custom -f ${BACKUP_PATH}/pleroma.pgdump
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echo "2.copy upload & static folder"
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cp -r ${PLEROMA_PATH}/static ${BACKUP_PATH}
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cp -r ${PLEROMA_PATH}/uploads ${BACKUP_PATH}
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echo "3.copy config file"
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cp ${PLEROMA_CONFIG_PATH} ${BACKUP_PATH}
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echo "————————————upload to remote——————————"
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echo "4.backup to remote"
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/usr/bin/expect <<EOF
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set time 30
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spawn duplicacy backup -threads 4
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expect {
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"ID" { send "$ACCESS_KEY_ID\n"; exp_continue }
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"Secret" { send "$SECRET_ACCESS_KEY\n"; exp_continue }
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"password" { send "$PASSWORD\n" }
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}
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spawn duplicacy prune -keep 7:30
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expect {
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"ID" { send "$ACCESS_KEY_ID\n"; exp_continue }
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"Secret" { send "$SECRET_ACCESS_KEY\n"; exp_continue }
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"password" { send "$PASSWORD\n" }
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}
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expect eof
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EOF
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echo "restart pleroma"
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sudo systemctl start pleroma
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echo `date +"%Y-%m-%d %H:%M:%S"` " done!"
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```
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我这里用`duplicacy prune -keep 7:30`设置了对于超过 30 天的版本，每 7 天保留一次新版本。如果不需要的话，删掉下面这段：
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```bash
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spawn duplicacy prune -keep 7:30
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expect {
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"ID" { send "$ACCESS_KEY_ID\n"; exp_continue }
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"Secret" { send "$SECRET_ACCESS_KEY\n"; exp_continue }
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"password" { send "$PASSWORD\n" }
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}
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```
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#### 3. 编辑`.env`:
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```bash
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sudo vim .env
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```
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```bash
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# duplicacy
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SNAPSHOT_ID=pleroma
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ACCESS_KEY_ID=
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SECRET_ACCESS_KEY=
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PASSWORD=1234 #刚设置的storage的密码
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#pleroma
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PLEROMA_DB=pleroma
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PLEROMA_PATH=/var/lib/pleroma
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PLEROMA_CONFIG_PATH=/etc/pleroma/config.exs
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BACKUP_PATH=/opt/pleroma-backup
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```
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安装 expect 包：
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```bash
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sudo apt-get install tcl tk expect
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```
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运行脚本：
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```bash
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sudo bash backup.sh
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```
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### 定时备份
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用 crontab 设置定时运行该脚本，这里设置的是每 7 天备份一次，如果还没有 crontab 的话，需要安装一下，这里不再赘述
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编辑 crontab 任务：
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```bash
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sudo crontab -e
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```
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添加下面这行
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```bash
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0 1 */7 * * root /bin/bash /opt/pleroma-backup/backup.sh
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```
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保存退出。
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## 参考：
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- [Mastodon 媒体存储和数据库备份](https://tech.konata.co/2022-02-20-mastodon-backup/)
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