[logs] Centralized Logging + large number of active hosts

From: ScottO (skippylou@private)
Date: Wed May 10 2006 - 09:10:28 PDT


Okay, so here is the current task I am working on and was looking to see 
how people have tackled it, basically any ideas out there to ponder. Any 
thoughts, comments, etc. will be appreciated. Thanks.

Key Highlights:

- Centralized logging setup for over 1000 Linux hosts.
- Need it to be scalable to even more eventual hosts.
- Estimate less than 1MB of data per host per day. Want to do 
summarization with syslog-ng to reduce network traffic, to make this 
even less.
- Need it setup so that the network isn't saturated.
- Rollout syslog-ng to the hosts, for using filtering etc.

Two ways I'm considering doing the backend right now:

- Potentially some sort of Linux LVS cluster with an NFS backend. So a 
pair of Linux load balancers that will hand off the syslog data to 
centralized syslog servers in a cluster, that then dump into some shared 
NFS server/solution.
- Or, maybe having distributed "collector" syslog servers that somehow 
dump back to a central syslog server. So a distributed architecture 
approach.


The LVS setup seems appealing to me for the scalability potential, but 
not sure if it is overkill.  What I am currently most concerned with is 
the amount of traffic over the network.

Thanks for any help.
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