我是docker 安装的Gitlab ，所以以下是 我的破解方法：

• 进入容器

docker exec -it gitlab /bin/bash

• 创建文件 vi license.rb文件

require "openssl"
require "gitlab/license"

key_pair = OpenSSL::PKey::RSA.generate(2048)
File.open("license_key", "w") { |f| f.write(key_pair.to_pem) }

public_key = key_pair.public_key
File.open("license_key.pub", "w") { |f| f.write(public_key.to_pem) }

private_key = OpenSSL::PKey::RSA.new File.read("license_key")
Gitlab::License.encryption_key = private_key

license = Gitlab::License.new
license.licensee = {
"Name" => "none",
"Company" => "none",
"Email" => "example@test.com",
}
license.starts_at = Date.new(2019, 1, 1) # 开始时间
license.expires_at = Date.new(2090, 1, 1) # 结束时间
license.notify_admins_at = Date.new(2089, 12, 1)
license.notify_users_at = Date.new(2089, 12, 1)
license.block_changes_at = Date.new(2090, 1, 1)
license.restrictions = {
active_user_count: 10000,
}

puts "License:"
puts license

data = license.export
puts "Exported license:"
puts data
File.open("GitLabBV.gitlab-license", "w") { |f| f.write(data) }

public_key = OpenSSL::PKey::RSA.new File.read("license_key.pub")
Gitlab::License.encryption_key = public_key

data = File.read("GitLabBV.gitlab-license")
$license = Gitlab::License.import(data)

puts "Imported license:"
puts $license

unless $license
raise "The license is invalid."
end

if $license.restricted?(:active_user_count)
active_user_count = 10000
if active_user_count > $license.restrictions[:active_user_count]
    raise "The active user count exceeds the allowed amount!"
end
end

if $license.notify_admins?
puts "The license is due to expire on #{$license.expires_at}."
end

if $license.notify_users?
puts "The license is due to expire on #{$license.expires_at}."
end

module Gitlab
class GitAccess
    def check(cmd, changes = nil)
    if $license.block_changes?
        return build_status_object(false, "License expired")
    end
    end
end
end

puts "This instance of GitLab Enterprise Edition is licensed to:"
$license.licensee.each do |key, value|
puts "#{key}: #{value}"
end

if $license.expired?
puts "The license expired on #{$license.expires_at}"
elsif $license.will_expire?
puts "The license will expire on #{$license.expires_at}"
else
puts "The license will never expire."
end

• 生成证书

ruby license.rb

将会生成如下文件：GitLabBV.gitlab-license license_key license_key.pub

• 替换默认公钥

cp -f license_key.pub /opt/gitlab/embedded/service/gitlab-rails/.license_encryption_key.pub

• 升级到ULTIMATE版本
  修改文件

vi /opt/gitlab/embedded/service/gitlab-rails/ee/app/models/license.rb

# 替换对应，使用搜索快速定位`/STARTER_PLAN`
# 将如下
restricted_attr(:plan).presence || STARTER_PLAN
# 替换为 
restricted_attr(:plan).presence || ULTIMATE_PLAN

• 重新配置gitlab

gitlab-ctl reconfigure
gitlab-ctl restart

• 导入许可证

登录gitlab后台，管理中心->订阅 ，导入 GitLabBV.gitlab-license
可以选择cat GitLabBV.gitlab-license打印出文件内容后，把密钥复制后使用密钥文本,而不是上传文件

• 参考文档

许可证生成
Gitlab EE安装与破解