Hobbit Server H.A. idea: hobbit client rework
I am interested to see Hobbit server to have High Availability soluation. There were some discussions on the list. Following is another idea.
The current design does allow hobbit client to send message to two hb server at the same time. See following,
hbclient> grep ^BBDISP hobbitclient.cfg BBDISP="0.0.0.0" # IP address of the Hobbit server BBDISPLAYS="hbs.test.com hbs2.test.com" # IP of multiple Hobbit servers. BBDISP must be "0.0.0.0". hbclient>
But this duplication can impose network traffic penalty on a site with large hb clients installation.
The data from hbs to hbs2 can be mirrored using DRBD(hb server on Linux) or AVS(Hobbit server on Soalris).
- Rework hb client send to hbs2.test.com in BBDISPLAYS list ONLY if hbs.test.com is not reachable ?
- or adding a new variable BBDISPBK when BBDISP or BBDISPLAYS servers are not reachable ?
Comments ?
T.J. Yang
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On Fri, 7 Sep 2007, T.J. Yang wrote:
But this duplication can impose network traffic penalty on a site with large hb clients installation.
Let's say 10000 clients send 10000 bytes every 300 seconds. That's 10000*10000/300/8 = 41666 bits per second. I'd say it's unlikely that hobbit traffic puts much strain on any reasonable network.
Ulric
On Fri, 7 Sep 2007, Ulric Eriksson wrote:
Let's say 10000 clients send 10000 bytes every 300 seconds. That's 10000*10000/300/8 = 41666 bits per second. I'd say it's unlikely that hobbit traffic puts much strain on any reasonable network.
Let's say Ulric can count: 10000*10000/300*8 = 2666664 bits per second. I think a hobbit server able to deal with 10000 clients also has gigabit network interfaces.
Ulric
Multiply by 8, to get from bytes to bits.
10000*10000/300*8
2666667 bits per second. Or 2.6Mbs
Steve
-----Original Message----- From: Ulric Eriksson [mailto:ulric at siag.nu] Sent: 07 September 2007 14:52 To: hobbit at hswn.dk Subject: Re: [hobbit] Hobbit Server H.A. idea: hobbit client rework
On Fri, 7 Sep 2007, T.J. Yang wrote:
But this duplication can impose network traffic penalty on a site with large hb clients installation.
Let's say 10000 clients send 10000 bytes every 300 seconds. That's 10000*10000/300/8 = 41666 bits per second. I'd say it's unlikely that hobbit traffic puts much strain on any reasonable network.
Ulric
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participants (3)
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Steve.Anderson＠bipsolutions.com
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tj_yang＠hotmail.com
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ulric＠siag.nu