• 创建git用户

useradd git
su - git

• 编译gitolite

git clone https://github.com/sitaramc/gitolite
mkdir -p $HOME/bin
gitolite/install -to $HOME/bin
//下载zip包时，还需要git bundle create /tmp/repositoryname.bundle --all

• 准备管理员公钥并初始化

ssh-keygen  //生成.ssh/id_rsa、.ssh/id_rsa.pub，然后用自己的密钥替换内容（git关联id_rsa名字，或配置.ssh/config）
gitolite setup -pk .ssh/id_rsa.pub
//创建了/home/git/repositories/gitolite-admin.git，/test.git

• 通过gitolite-admin管理用户和仓库

git clone git@xlongwei.com:gitolite-admin

• 添加仓库和用户

//收集用户的公钥到keydir目录，命名规则{name}.pub
vi conf/gitolite.conf
@admin = user1 user2 //定义用户组，R读 W写 +强制更新 C创建 repo dir/..*目录内权限
repo foo
  RW+                     =   alice
  -   master              =   bob
  -   refs/tags/v[0-9]    =   bob
  RW                      =   bob
  RW  refs/tags/v[0-9]    =   carol
  R                       =   dave
    
//RW+ 全部权限，bob可以读写（非master分支），carol可以创建v1之类的tag，dave可以读取
//git add .
//git commit -m "add repo foo"
//git push

* 解决：no matching key exchange method found. Their offer: diffie-hellman-group1-sha1

vi  ~/.ssh/config  //或vi /etc/ssh/ssh_config
Host *
KexAlgorithms +diffie-hellman-group1-sha1