解决方案:
cd /etc/gitlab
vim /gitlab.rb
gitlab_rails['rack_attack_git_basic_auth'] = {
'enabled' => true,
'ip_whitelist' => ["127.0.0.1","IP地址"],
'maxretry' => 300,
'findtime' => 5,
'bantime' => 60
}
保存gitlab配置: gitlab-ctl reconfigure
重启-gitlab: gitlab-ctl restart