Date: Wed, 22 Feb 2017 10:01:27 -0500 From: Allan Jude <allanjude@freebsd.org> To: freebsd-hackers@freebsd.org Subject: Re: FreeBSD CARP load balancing. Message-ID: <a67fe827-8ad1-9158-2135-a5af320715b4@freebsd.org> In-Reply-To: <201702211546.v1LFkdxA008295@pdx.rh.CN85.dnsmgr.net> References: <201702211546.v1LFkdxA008295@pdx.rh.CN85.dnsmgr.net>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --FO0JHDODp2lPP6Qi2RlPHHWPfdn4fdgxJ Content-Type: multipart/mixed; boundary="oEDueuCRXoRA8s56VbTtXN1ikCrQ8oaRp"; protected-headers="v1" From: Allan Jude <allanjude@freebsd.org> To: freebsd-hackers@freebsd.org Message-ID: <a67fe827-8ad1-9158-2135-a5af320715b4@freebsd.org> Subject: Re: FreeBSD CARP load balancing. References: <201702211546.v1LFkdxA008295@pdx.rh.CN85.dnsmgr.net> In-Reply-To: <201702211546.v1LFkdxA008295@pdx.rh.CN85.dnsmgr.net> --oEDueuCRXoRA8s56VbTtXN1ikCrQ8oaRp Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 2017-02-21 10:46, Rodney W. Grimes wrote: >> On 2017-02-21 00:55, Gleb Popov wrote: >>> On Mon, Feb 20, 2017 at 10:16 PM, Steven Hartland <killing@multiplay.= co.uk> >>> wrote: >>> >>>> On 20/02/2017 19:07, Gleb Popov wrote: >>>> >>>> >>>> On Mon, Feb 20, 2017 at 12:01 PM, Steven Hartland <killing@multiplay= =2Eco.uk >>>>> wrote: >>>> >>>>> Does LAGG do what you need? >>>> >>>> >>>> Doesn't seem so. I need to balance incoming traffic between several = hosts. >>>> If I understood it correctly, lagg can be used to load-balance outgo= ing >>>> traffic only. >>>> >>>> >>>> LAGG does incoming and outgoing but only on a single host, so it doe= s >>>> sound like it won't help you. >>>> >>>> That said what your doing does sound quite out of the ordinary, >>>> >>> >>> So, that *net.inet.carp.arpbalance *sysctl was out of ordinary featu= re? >>> That probably explains it. >>> >>> is there a reason you're trying to copy the traffic to multiple hosts= ? >>>> >>> >>> Not copy, but distribute. I just don't want to wait current CARP mast= er die >>> to make another computer become active, but to switch between them in= some >>> fashion (round-robin or whatever). >>> >>> >>>> >>>> Might be a good idea to explain exactly what your trying to achieve.= >>>> >>>> Regards >>>> Steve >>>> >>> _______________________________________________ >>> freebsd-hackers@freebsd.org mailing list >>> https://lists.freebsd.org/mailman/listinfo/freebsd-hackers >>> To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd= =2Eorg" >>> >> >> I am not sure arpbalancing every worked very well. Without a hashing >> algorithm or something, how would you actually make a TCP session work= ? >=20 > 8.xish man page: > ARP level load balancing > The carp has limited abilities for load balancing the incoming con= nec- > tions between hosts in Ethernet network. For load balancing opera= tion, > one needs several CARP interfaces that are configured to the same = IP > address, but to a different VHIDs. Once an ARP request is receive= d, the > CARP protocol will use a hashing function against the source IP ad= dress > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^= ^^^^ > in the ARP request to determine which VHID should this request bel= ong to. > If the corresponding CARP interface is in master state, the ARP re= quest > will be replied, otherwise it will be ignored. See the EXAMPLES s= ection > for a practical example of load balancing. >=20 >=20 > There is your hash. >=20 Ohh, cool. I suppose it would be nice to have that feature back. --=20 Allan Jude --oEDueuCRXoRA8s56VbTtXN1ikCrQ8oaRp-- --FO0JHDODp2lPP6Qi2RlPHHWPfdn4fdgxJ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.16 (MingW32) iQIcBAEBAgAGBQJYrafKAAoJEBmVNT4SmAt+sFQP/RhyrInu+U9vvSf5hmyB8vTC K0xq8Ordiv8KnoA25RAmWITF3aj5Eu51qSYeZFxXYSQhtifkQ44BnXiAxYp102AI exaoQZksrwdoz2oMZSOeIUfGoVBv5cQsc/Udzr57uK9GdbY+6gc0O17XiM3P5//l QHtav9lsVEUE24V+Qvywwr9pl9tiBAV9siKyB4sw07RhTWmesAq4FNEn9hOLFqwp fkMNOAf+RI5Mt7DZevTTzyP9IYv/faqiuBjctiiUaNdDmpbEvGsI+cdhTm5R6bfs demIx6SI2N35A4tVeCvdzyo66clIv25KrV5zi5uLuOsEgJpoXoKbBhu9ff5uCUFP CCwLMYnx2o7gyNV0/ABNhy6TeGTkFoVUHXxRtX/9d9rncoF7Lk79RVKAaRDikNJo QDto5dE4FvrzSFroAuz1RCLkN8muFqp3YOkM9AHH+5GyvglWzxESX9CSsx4sZfii uh62f55v9LpvZw7UfeG3jlOFnn8FwYwkFVo4yJ3Qj4HtrPEgJ/wbKvcC7/Eq6Erx oi0I/SawPdHCROu266HAcUeWeKvj2X48du60cuO+mjMry6qsWQHjdB67AUVe5tlU aGSiI2MVIUUirnmLBJ0aNCKINXCi4RHVneRTAYBitAnN6LLEzl3yuaEkcG3oP8if CVCbxhnHBzm9Aedt05ji =/0PE -----END PGP SIGNATURE----- --FO0JHDODp2lPP6Qi2RlPHHWPfdn4fdgxJ--
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