Stackhero for Graylog 包含哪些内容？
我们包括 OpenSearch、MongoDB、一个电子邮件服务器（无限制！）以及一个反向代理。
您不需要添加任何其他服务，Graylog 已经可以直接使用。
并发连接的限制是多少？
与传统的云服务提供商不同，Stackhero 允许无限制的并发连接！
您的实例性能完全专属于您。只要您的实例能够处理，您可以使用任意数量的连接。
是否包含一些插件？
我们已包含来自Community Edition的官方插件，以及
Slack/Mattermost和
Telegram Alert插件。
如有需要，我们可以考虑添加其他插件。您可以联系我们，我们将审核您的请求。
日志会保存多久？
您可以根据需要保留日志。
只要您的实例磁盘空间支持，就没有限制！
日志保留是如何管理的？
您可以使用 Graylog 界面精确配置日志的保留。
例如，您可以选择保留最近 365 天的日志，或者保留最近 2 亿条消息，或者将占用空间限制为 400GB。
一个实例可以存储多少日志？
Graylog 使用一个日志作为缓冲区，介于接收日志的时间和存储到 OpenSearch 数据库的时间之间。
这个日志可以占用您实例上最多 7GB 的磁盘空间。
此外，Graylog、MongoDB 和 OpenSearch 需要磁盘空间才能正常工作。
由于 OpenSearch 具有保护机制，如果磁盘的可用空间少于 7GB，数据库将自动切换为只读模式。
这就是为什么我们建议您配置保留策略，以确保您的实例始终有 15GB 的可用磁盘空间，从而保证其正常运行。
是否可以使用SSH连接到实例？
由于Stackhero提供托管服务，因此无法使用SSH访问。如有任何安装需求，请联系支持以探索可能的解决方案。
Is it possible to restrict access based on IPs with a firewall?
Absolutely! Your instance has its own firewall where you can decide which IPs have access to which port in 2 clicks.
What cloud providers are used by Stackhero?
We created our own cloud software solution, making us completely independent from cloud providers. We deploy this innovative solution directly on bare-metal servers, providing you with incredible performance and stability.
Where is the data hosted?
Stackhero is a French company operating under European and French laws.
Servers are located, depending on your choice, either in the European Union (France) or in the USA.
Backups are stored in the European Union.
What is the software infrastructure?
Your service is composed of multiple subservices. All of them are running in containers, within a virtual machine, totally dedicated to you.
This VM is totally private and isolated from other clients, offering a highly secured environment with very high-performance.
It is hosted on a bare-metal server running Stackhero DC OS, our own Linux distribution.
What about disk performance?
We use disks physically plugged to your instances.
We don't use network disks, contrary to traditional cloud solutions, that are slow and expensive.
This way we ensure best performances and exceptional IOPS.
What is the atomic backup system?
The problem with traditional backup systems is that files are saved at different times interval.
Let's say you have 2 files, a.txt and b.txt. Your backup starts at 9am and it finishes at 10am.
The file a.txt will contain data from 9am and b.txt will contain data from 10am.
This is traditional in backups systems and is a big issue leading to consistency problems.
This is why we developed an in-house backup system that takes an atomic image of your instance at a precise moment.
Atomic in a way that we can guarantee that all files from the backup have been taken exactly at the same time.
If your backup starts at 9am, all files will have data from 9am. You have a perfect consistent and reliable backup.
Are backups encrypted?
Backups are first transmitted to a dedicated server, which verifies and validates the data. Once these checks have been approved, the backups are encrypted and archived.
Encryption uses ECDH and Curve25519 as part of the OpenPGP protocol, with a unique key generated for each backup.
How does billing work?
At the beginning of each month, our system computes how many hours your services were up and a detailed invoice is created.
You receive a single monthly invoice, containing all your services, clearly explained and easy to understand. Your accounting department will love that!
What certifications does Stackhero hold?
The primary mission of Stackhero is to provide a platform that is easy to use, extremely reliable, and highly secure.
A key element in achieving this mission is the annual attainment of the ISO 27001 certification, a globally recognized quality and security label.
This certification, awarded following a rigorous audit conducted by an independent external body, attests to compliance with the strictest international standards in information security.
