git倉庫遷移的兩種解決方案

Git倉庫遷移而不丟失log的方法

• 要求能保留原先的commit記錄，應該如何遷移呢？
• 同時，本地已經clone了原倉庫，要配置成新的倉庫地址，該如何修改呢？
• 注意：若是使用了代碼審覈工具Gerrit，那麼在進行操做以前須要將Gerrit關掉，等成功恢復後再將Gerrit開戶便可

一、使用git push --mirror

先了解一些git的基本參數介紹
git clone --bare

GIT-CLONE(1)                      Git Manual                      GIT-CLONE(1)

NAME
       git-clone - Clone a repository into a new directory

SYNOPSIS
       git clone [--template=<template_directory>]
                 [-l] [-s] [--no-hardlinks] [-q] [-n] [--bare] [--mirror]
                 [-o <name>] [-b <name>] [-u <upload-pack>] [--reference <repository>]
                 [--depth <depth>] [--recursive] [--] <repository> [<directory>]
        --bare
            Make a bare GIT repository. That is, instead of creating <directory> and placing the administrative files
           in <directory>/.git, make the <directory> itself the $GIT_DIR. This obviously implies the -n because there
           is nowhere to check out the working tree. Also the branch heads at the remote are copied directly to
           corresponding local branch heads, without mapping them to refs/remotes/origin/. When this option is used,
           neither remote-tracking branches nor the related configuration variables are created.

git push --mirror

--mirror
           Instead of naming each ref to push, specifies that all refs under refs/ (which includes but is not limited
           to refs/heads/, refs/remotes/, and refs/tags/) be mirrored to the remote repository. Newly created local
           refs will be pushed to the remote end, locally updated refs will be force updated on the remote end, and
           deleted refs will be removed from the remote end. This is the default if the configuration option
           remote.<remote>.mirror is set.

一、創建新倉庫

• 1). 從原地址克隆一份裸版本庫，好比本來託管於 GitHub，或者是本地的私有倉庫

git clone --bare git://192.168.10.XX/git_repo/project_name.git

• 2). 而後到新的 Git 服務器上建立一個新項目，好比 GitCafe，亦或是本地的私有倉庫，如192.168.20.XX

su - git
cd /path/to/path/
mkdir new_project_name.git
git init --bare new_project_name.git

• 3). 以鏡像推送的方式上傳代碼到 GitCafe 服務器上。
  請確保已經添加了公鑰到新的機器上

cd project_name.git
git push --mirror git@192.168.20.XX/path/to/path/new_project_name.git

• 4). 刪除本地代碼

cd ..
rm -rf project_name.git

• 5). 到新服務器上找到 Clone 地址，直接Clone到本地就能夠了。

git clone git@192.168.20.XX/path/to/path/new_project_name.git

這種方式能夠保留原版本庫中的全部內容。

二、切換remote_url

先查看remote的名字

git branch -r

假設你的remote是origin，用git remote set_url 更換地址

git remote set-url origin remote_git_address

remote_git_address更換成你的新的倉庫地址。

第二種切換remote_url的方法更直接，直接更改.git/conf配置文件裏的ip地址就行。