Stackhero for Graylog 包含哪些內容？
我們包括 OpenSearch、MongoDB、一個電郵伺服器（無限量！）以及一個反向代理。
您不需要添加其他服務，Graylog 已經可以直接使用。
同時連接的限制是多少？
與傳統的雲端供應商不同，Stackhero 允許無限的同時連接！
您的實例運算能力完全專屬於您。只要您的實例能夠處理，您可以使用任意多的連接。
有包含一些插件嗎？
我們已經包含了來自 Community Edition 的官方插件，以及
Slack/Mattermost 和
Telegram Alert 插件。
如有需要，我們可以考慮添加其他插件。您可以聯絡我們，我們會審核您的請求。
日誌會保存多久？
您可以隨時保留您的日誌。
只要您的實例磁碟空間允許，就沒有任何限制！
如何管理日誌保留？
您可以使用 Graylog 介面精確地配置日誌的保留。
例如，您可以選擇保留過去 365 天的日誌，或保留最近的 2 億條訊息，或者將佔用空間限制在 400GB。
一個實例可以儲存多少日誌？
Graylog 使用一個日誌作為緩衝區，介於接收日誌的時間和將其存儲在 OpenSearch 數據庫的時間之間。
這個日誌可以佔用您實例上最多 7GB 的磁碟空間。
此外，Graylog、MongoDB 和 OpenSearch 需要磁碟空間才能正常運作。
由於 OpenSearch 有一個保護機制，如果磁碟少於 7GB 的可用空間，數據庫將自動切換為唯讀模式。
這就是為什麼我們建議您配置保留策略，以確保您的實例上始終有 15GB 的可用磁碟空間，以保證其正常運行。
是否可以使用SSH連接到該實例？
由於 Stackhero 提供託管服務，因此不提供 SSH 訪問。如有任何安裝需求，請聯絡支援以探索可能的解決方案。
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.
