2015-01-06 06:20:04 +08:00
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Design for Seaweed-FS security
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Design Objectives
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Security can mean many different things. The original vision is that: if you have one machine lying around
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somewhere with some disk space, it should be able to join your file system to contribute some disk space and
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2015-01-13 16:27:51 +08:00
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network bandwidth, securely!
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2015-01-06 06:20:04 +08:00
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To achieve this purpose, the security should be able to:
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1. Secure the inter-server communication. Only real cluster servers can join and communicate.
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2. allow clients to securely write to volume servers
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Non Objective
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Multi-tenant support. Avoid filers or clients cross-updating files.
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User specific access control.
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Design Architect
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2015-01-13 16:27:51 +08:00
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master, and volume servers all talk securely via 2-way SSL for admin operations.
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2015-01-06 06:20:04 +08:00
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upon joining, master gives its secret key to volume servers.
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filer or clients talk to master to get secret key, and use the key to generate JWT to write on volume server.
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A side benefit:
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a time limited read feature?
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4. volume server needs to expose https ports
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HTTP Connections
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clear http
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filer~>master, need to get a JWT from master
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filer~>volume
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2-way https
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master~ssl~>volume
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volume~ssl~>master
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file uploading:
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when volume server starts, it asks master for the secret key to decode JWT
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when filer/clients wants to upload, master generate a JWT
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filer~>volume(public port)
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master~>volume(public port)
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2015-01-13 16:27:51 +08:00
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Currently, volume server has 2 ip addresses: ip and publicUrl.
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The ip is for admin purpose, and master talk to volume server this way.
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The publicUrl is for clients to access the server, via http GET/POST/DELETE etc.
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The write operations are secured by JWT.
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clients talk to master also via https? possible. Decide on this later.
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Dev plan:
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1. volume server separate admin from public GET/POST/DELETE handlers
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The step 1 may be good enough for most use cases.
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If 2-way ssl are still needed
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2. volume server add ssl support
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3. https connections to operate on volume servers
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