katran server not sending the packets to the backend real servers #15
Comments
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Hi.
2). no, sending w/ just changing the destination MAC is not supported. as katran is built to work w/ L3 environment in mind |
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1.2) ~/katran-master/example_grpc/goclient/bin$ ./main -l Here the VIP is 10.38.42.103 which is basically from the same subnet as the IP assigned to the interface ens4f0.201 hosting the Katran server. Default MAC is provided as the MAC of the GW of this subnet ( 10.38.42.97 ). It's found as - 1.1)tcpdump is not showing any output on server-2. Also in server-1 ~/katran-master/example_grpc/goclient/bin$ ./main -s -lru Looks like no packet is coming to the Katran server. The original question was - why VIP is not shown in the interface ens4f0.201 hosting Katran server? |
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1). "Here the VIP is 10.38.42.103 which is basically from the same subnet as the IP assigned to the interface ens4f0.201 hosting the Katran server." so this is the issue here. because when default router trying to send pakcet to this DST - it first doing arp resolution. but because noone (see 2) have this address configured - no one replies to it. and packet never hit katran. 2). "he original question was - why VIP is not shown in the interface ens4f0.201 hosting Katran server?" because for katran there is no need for VIP to be configured in kernel (as XDP works before linux kernel; thats why by default it doesnt configure it). server, running katran, must somehow attract traffic toward VIP. usually in production it's being done with a help of dynamic routing protocols (such as BGP). or with static router from router (e.g. VIP X is available through next-hop Y, where Y is ip address of katran server). however dynamic routing is more preferable as it would allow to 1. have HA (as you can run more than 1 server) + 2. would allow you to operate in Active/Active scenario (compare, to say, VRRP, where only master would response to ARPs and second load balancer would be in standby mode) |
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So it means that in the next Hop router, routing entry needs to be added to transfer the packet with the destination as VIP to the interface connecting Katran server? |
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yes. for testing this could be as simple as for your current topology, if you have no access to router, you can manually add ip address of the VIP on the eth0 interface (e.g. ip a a 10.38.42.103/32 dev eth0 ; double check that net.ipv4.conf.eth0.arp_announce is set to 0) also i can see that your interface name is "ens4f0.201" if .201 means that it's located in vlan 201 and ingress traffic has vlan header - then this is not supported as well. katran right now doesn't work with VLAN tagged traffic |
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Let me know if you have any other questions |
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Oct 19, 2020
Summary: Pull Request resolved: facebookexperimental/rust-shed#15 With the update from rustc 1.44 to 1.47 the doctests started to break when building a crate that depends on a different crate of the same name, see this: rust-lang/cargo#6819 This diff also removes the TravisCI build as it was broken and unused for some time. Reviewed By: krallin Differential Revision: D24390815 fbshipit-source-id: fa9c78ef394640afbf8c419f8276bbf339960406
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Mar 20, 2024
Summary: After diving in all the build system I found that the first error mentioned in #219 and #220 ``` 1597 | static_assert(formattable_char, "Mixing character types is disallowed."); ``` Was basically happening while compiling folly, after compiling it by itself I noticed this didn't happened, so I found that there was an issue with the fmt dependencies, removing the one that was downloaded by katran The issue mentioned in: #221 Was because katran was configured to use C++14 by default, and some of the libraries of folly require C++17, updated our requirements. Test Plan: TEST Output: ``` Test project /home/ubuntu/ivanmorett/katran/_build/build/katran/lib/tests Start 1: IpHelpersTests.testV4ParsingBe 1/56 Test #1: IpHelpersTests.testV4ParsingBe ....................... Passed 0.01 sec Start 2: IpHelpersTests.testV4ParsingInt 2/56 Test #2: IpHelpersTests.testV4ParsingInt ...................... Passed 0.01 sec Start 3: IpHelpersTests.testV6ParsingBe 3/56 Test #3: IpHelpersTests.testV6ParsingBe ....................... Passed 0.01 sec Start 4: IpHelpersTests.testV6ParsingInt 4/56 Test #4: IpHelpersTests.testV6ParsingInt ...................... Passed 0.01 sec Start 5: IpHelpersTests.testIncorrectAddr 5/56 Test #5: IpHelpersTests.testIncorrectAddr ..................... Passed 0.01 sec Start 6: CHHelpersTest.testMaglevCHSameWeight 6/56 Test #6: CHHelpersTest.testMaglevCHSameWeight ................. Passed 0.01 sec Start 7: CHHelpersTest.testMaglevV2CHSameWeight 7/56 Test #7: CHHelpersTest.testMaglevV2CHSameWeight ............... Passed 0.01 sec Start 8: CHHelpersTest.testMaglevCHDiffWeight 8/56 Test #8: CHHelpersTest.testMaglevCHDiffWeight ................. Passed 0.01 sec Start 9: CHHelpersTest.testMaglevV2CHDiffWeight 9/56 Test #9: CHHelpersTest.testMaglevV2CHDiffWeight ............... Passed 0.01 sec Start 10: CHHelpersTest.testMaglevWeightsSumLargerThanRing 10/56 Test #10: CHHelpersTest.testMaglevWeightsSumLargerThanRing ..... Passed 0.01 sec Start 11: CHHelpersTest.testMaglevWeightsSumBelowRingSize 11/56 Test #11: CHHelpersTest.testMaglevWeightsSumBelowRingSize ...... Passed 0.01 sec Start 12: KatranLbTest.testChangeMac 12/56 Test #12: KatranLbTest.testChangeMac ........................... Passed 0.01 sec Start 13: KatranLbTest.testIfIndex 13/56 Test #13: KatranLbTest.testIfIndex ............................. Passed 0.01 sec Start 14: KatranLbTest.testVipHelpers 14/56 Test #14: KatranLbTest.testVipHelpers .......................... Passed 0.14 sec Start 15: KatranLbTest.testAddingInvalidVip 15/56 Test #15: KatranLbTest.testAddingInvalidVip .................... Passed 0.01 sec Start 16: KatranLbTest.testRealHelpers 16/56 Test #16: KatranLbTest.testRealHelpers ......................... Passed 0.01 sec Start 17: KatranLbTest.testRealFlags 17/56 Test #17: KatranLbTest.testRealFlags ........................... Passed 0.01 sec Start 18: KatranLbTest.testVipStatsHelper 18/56 Test #18: KatranLbTest.testVipStatsHelper ...................... Passed 0.01 sec Start 19: KatranLbTest.testLruStatsHelper 19/56 Test #19: KatranLbTest.testLruStatsHelper ...................... Passed 0.01 sec Start 20: KatranLbTest.testLruMissStatsHelper 20/56 Test #20: KatranLbTest.testLruMissStatsHelper .................. Passed 0.01 sec Start 21: KatranLbTest.testHcHelpers 21/56 Test #21: KatranLbTest.testHcHelpers ........................... Passed 0.01 sec Start 22: KatranLbTest.getVipFlags 22/56 Test #22: KatranLbTest.getVipFlags ............................. Passed 0.01 sec Start 23: KatranLbTest.getAllVips 23/56 Test #23: KatranLbTest.getAllVips .............................. Passed 0.01 sec Start 24: KatranLbTest.testUpdateRealsHelper 24/56 Test #24: KatranLbTest.testUpdateRealsHelper ................... Passed 0.07 sec Start 25: KatranLbTest.testUpdateQuicRealsHelper 25/56 Test #25: KatranLbTest.testUpdateQuicRealsHelper ............... Passed 0.06 sec Start 26: KatranLbTest.testUpdateQuicReal 26/56 Test #26: KatranLbTest.testUpdateQuicReal ...................... Passed 0.01 sec Start 27: KatranLbTest.getRealsForVip 27/56 Test #27: KatranLbTest.getRealsForVip .......................... Passed 0.01 sec Start 28: KatranLbTest.getHealthcheckersDst 28/56 Test #28: KatranLbTest.getHealthcheckersDst .................... Passed 0.01 sec Start 29: KatranLbTest.invalidAddressHandling 29/56 Test #29: KatranLbTest.invalidAddressHandling .................. Passed 0.01 sec Start 30: KatranLbTest.addInvalidSrcRoutingRule 30/56 Test #30: KatranLbTest.addInvalidSrcRoutingRule ................ Passed 0.01 sec Start 31: KatranLbTest.addValidSrcRoutingRuleV4 31/56 Test #31: KatranLbTest.addValidSrcRoutingRuleV4 ................ Passed 0.01 sec Start 32: KatranLbTest.addValidSrcRoutingRuleV6 32/56 Test #32: KatranLbTest.addValidSrcRoutingRuleV6 ................ Passed 0.01 sec Start 33: KatranLbTest.addMaxSrcRules 33/56 Test #33: KatranLbTest.addMaxSrcRules .......................... Passed 0.01 sec Start 34: KatranLbTest.delSrcRules 34/56 Test #34: KatranLbTest.delSrcRules ............................. Passed 0.01 sec Start 35: KatranLbTest.clearSrcRules 35/56 Test #35: KatranLbTest.clearSrcRules ........................... Passed 0.01 sec Start 36: KatranLbTest.addFewInvalidNets 36/56 Test #36: KatranLbTest.addFewInvalidNets ....................... Passed 0.01 sec Start 37: KatranLbTest.addInvalidDecapDst 37/56 Test #37: KatranLbTest.addInvalidDecapDst ...................... Passed 0.01 sec Start 38: KatranLbTest.addInvalidDecapDstNet 38/56 Test #38: KatranLbTest.addInvalidDecapDstNet ................... Passed 0.01 sec Start 39: KatranLbTest.addValidDecapDst 39/56 Test #39: KatranLbTest.addValidDecapDst ........................ Passed 0.01 sec Start 40: KatranLbTest.delValidDecapDst 40/56 Test #40: KatranLbTest.delValidDecapDst ........................ Passed 0.01 sec Start 41: KatranLbTest.delInvalidDecapDst 41/56 Test #41: KatranLbTest.delInvalidDecapDst ...................... Passed 0.01 sec Start 42: KatranLbTest.addMaxDecapDst 42/56 Test #42: KatranLbTest.addMaxDecapDst .......................... Passed 0.01 sec Start 43: VipTestF.testBatchUpdateReals 43/56 Test #43: VipTestF.testBatchUpdateReals ........................ Passed 0.04 sec Start 44: VipTestF.testBatchUpdateRealsWeight 44/56 Test #44: VipTestF.testBatchUpdateRealsWeight .................. Passed 0.05 sec Start 45: VipTestF.testGetRealsAndWeight 45/56 Test #45: VipTestF.testGetRealsAndWeight ....................... Passed 0.01 sec Start 46: VipTestF.testGetReals 46/56 Test #46: VipTestF.testGetReals ................................ Passed 0.02 sec Start 47: VipTest.testAddRemoveReal 47/56 Test #47: VipTest.testAddRemoveReal ............................ Passed 0.01 sec Start 48: EventPipeCallbackTest.SimpleCallbackTest 48/56 Test #48: EventPipeCallbackTest.SimpleCallbackTest ............. Passed 0.01 sec Start 49: EventPipeCallbackTest.LargeWriteTest 49/56 Test #49: EventPipeCallbackTest.LargeWriteTest ................. Passed 0.15 sec Start 50: TestMonitoringServiceCore.SimpleAcceptSubscription 50/56 Test #50: TestMonitoringServiceCore.SimpleAcceptSubscription ... Passed 0.01 sec Start 51: TestMonitoringServiceCore.SimpleErrors 51/56 Test #51: TestMonitoringServiceCore.SimpleErrors ............... Passed 0.01 sec Start 52: TestMonitoringServiceCore.EventIntersection 52/56 Test #52: TestMonitoringServiceCore.EventIntersection .......... Passed 0.01 sec Start 53: TestMonitoringServiceCore.RacingClients 53/56 Test #53: TestMonitoringServiceCore.RacingClients .............. Passed 0.01 sec Start 54: TestMonitoringServiceCore.SubscribeAndCancel 54/56 Test #54: TestMonitoringServiceCore.SubscribeAndCancel ......... Passed 0.01 sec Start 55: PcapWriterTest.SingleWriter 55/56 Test #55: PcapWriterTest.SingleWriter .......................... Passed 0.02 sec Start 56: PcapWriterTest.MultiWriter 56/56 Test #56: PcapWriterTest.MultiWriter ........................... Passed 0.01 sec 100% tests passed, 0 tests failed out of 56 Total Test time (real) = 1.04 sec + cd ../testing/ + ctest -v ./CMakeFiles ./CTestTestfile.cmake ./Makefile ./base64helpers-tests './base64helpers-tests[1]_include.cmake' './base64helpers-tests[1]_tests.cmake' ./cmake_install.cmake ./katran_tester ./libbase64_helpers.a ./libbpftester.a ./libkatran_test_provision.a ./libkatran_test_util.a ./libpcap_parser.a ctest: /usr/local/lib/libcurl.so.4: no version information available (required by ctest) Test project /home/ubuntu/ivanmorett/katran/_build/build/katran/lib/testing Start 1: Base64Tests.testEncode 1/2 Test #1: Base64Tests.testEncode ........... Passed 0.01 sec Start 2: Base64Tests.testDecode 2/2 Test #2: Base64Tests.testDecode ........... Passed 0.01 sec 100% tests passed, 0 tests failed out of 2 Total Test time (real) = 0.01 sec + popd ~/ivanmorett/katran/_build ``` Differential Revision: D55108012 Pulled By: lima1756
lima1756
added a commit
that referenced
this issue
Mar 20, 2024
Summary: After diving in all the build system I found that the first error mentioned in #219 and #220 ``` 1597 | static_assert(formattable_char, "Mixing character types is disallowed."); ``` Was basically happening while compiling folly, after compiling it by itself I noticed this didn't happened, so I found that there was an issue with the fmt dependencies, removing the one that was downloaded by katran The issue mentioned in: #221 Was because katran was configured to use C++14 by default, and some of the libraries of folly require C++17, updated our requirements. Test Plan: TEST Output: ``` Test project /home/ubuntu/ivanmorett/katran/_build/build/katran/lib/tests Start 1: IpHelpersTests.testV4ParsingBe 1/56 Test #1: IpHelpersTests.testV4ParsingBe ....................... Passed 0.01 sec Start 2: IpHelpersTests.testV4ParsingInt 2/56 Test #2: IpHelpersTests.testV4ParsingInt ...................... Passed 0.01 sec Start 3: IpHelpersTests.testV6ParsingBe 3/56 Test #3: IpHelpersTests.testV6ParsingBe ....................... Passed 0.01 sec Start 4: IpHelpersTests.testV6ParsingInt 4/56 Test #4: IpHelpersTests.testV6ParsingInt ...................... Passed 0.01 sec Start 5: IpHelpersTests.testIncorrectAddr 5/56 Test #5: IpHelpersTests.testIncorrectAddr ..................... Passed 0.01 sec Start 6: CHHelpersTest.testMaglevCHSameWeight 6/56 Test #6: CHHelpersTest.testMaglevCHSameWeight ................. Passed 0.01 sec Start 7: CHHelpersTest.testMaglevV2CHSameWeight 7/56 Test #7: CHHelpersTest.testMaglevV2CHSameWeight ............... Passed 0.01 sec Start 8: CHHelpersTest.testMaglevCHDiffWeight 8/56 Test #8: CHHelpersTest.testMaglevCHDiffWeight ................. Passed 0.01 sec Start 9: CHHelpersTest.testMaglevV2CHDiffWeight 9/56 Test #9: CHHelpersTest.testMaglevV2CHDiffWeight ............... Passed 0.01 sec Start 10: CHHelpersTest.testMaglevWeightsSumLargerThanRing 10/56 Test #10: CHHelpersTest.testMaglevWeightsSumLargerThanRing ..... Passed 0.01 sec Start 11: CHHelpersTest.testMaglevWeightsSumBelowRingSize 11/56 Test #11: CHHelpersTest.testMaglevWeightsSumBelowRingSize ...... Passed 0.01 sec Start 12: KatranLbTest.testChangeMac 12/56 Test #12: KatranLbTest.testChangeMac ........................... Passed 0.01 sec Start 13: KatranLbTest.testIfIndex 13/56 Test #13: KatranLbTest.testIfIndex ............................. Passed 0.01 sec Start 14: KatranLbTest.testVipHelpers 14/56 Test #14: KatranLbTest.testVipHelpers .......................... Passed 0.14 sec Start 15: KatranLbTest.testAddingInvalidVip 15/56 Test #15: KatranLbTest.testAddingInvalidVip .................... Passed 0.01 sec Start 16: KatranLbTest.testRealHelpers 16/56 Test #16: KatranLbTest.testRealHelpers ......................... Passed 0.01 sec Start 17: KatranLbTest.testRealFlags 17/56 Test #17: KatranLbTest.testRealFlags ........................... Passed 0.01 sec Start 18: KatranLbTest.testVipStatsHelper 18/56 Test #18: KatranLbTest.testVipStatsHelper ...................... Passed 0.01 sec Start 19: KatranLbTest.testLruStatsHelper 19/56 Test #19: KatranLbTest.testLruStatsHelper ...................... Passed 0.01 sec Start 20: KatranLbTest.testLruMissStatsHelper 20/56 Test #20: KatranLbTest.testLruMissStatsHelper .................. Passed 0.01 sec Start 21: KatranLbTest.testHcHelpers 21/56 Test #21: KatranLbTest.testHcHelpers ........................... Passed 0.01 sec Start 22: KatranLbTest.getVipFlags 22/56 Test #22: KatranLbTest.getVipFlags ............................. Passed 0.01 sec Start 23: KatranLbTest.getAllVips 23/56 Test #23: KatranLbTest.getAllVips .............................. Passed 0.01 sec Start 24: KatranLbTest.testUpdateRealsHelper 24/56 Test #24: KatranLbTest.testUpdateRealsHelper ................... Passed 0.07 sec Start 25: KatranLbTest.testUpdateQuicRealsHelper 25/56 Test #25: KatranLbTest.testUpdateQuicRealsHelper ............... Passed 0.06 sec Start 26: KatranLbTest.testUpdateQuicReal 26/56 Test #26: KatranLbTest.testUpdateQuicReal ...................... Passed 0.01 sec Start 27: KatranLbTest.getRealsForVip 27/56 Test #27: KatranLbTest.getRealsForVip .......................... Passed 0.01 sec Start 28: KatranLbTest.getHealthcheckersDst 28/56 Test #28: KatranLbTest.getHealthcheckersDst .................... Passed 0.01 sec Start 29: KatranLbTest.invalidAddressHandling 29/56 Test #29: KatranLbTest.invalidAddressHandling .................. Passed 0.01 sec Start 30: KatranLbTest.addInvalidSrcRoutingRule 30/56 Test #30: KatranLbTest.addInvalidSrcRoutingRule ................ Passed 0.01 sec Start 31: KatranLbTest.addValidSrcRoutingRuleV4 31/56 Test #31: KatranLbTest.addValidSrcRoutingRuleV4 ................ Passed 0.01 sec Start 32: KatranLbTest.addValidSrcRoutingRuleV6 32/56 Test #32: KatranLbTest.addValidSrcRoutingRuleV6 ................ Passed 0.01 sec Start 33: KatranLbTest.addMaxSrcRules 33/56 Test #33: KatranLbTest.addMaxSrcRules .......................... Passed 0.01 sec Start 34: KatranLbTest.delSrcRules 34/56 Test #34: KatranLbTest.delSrcRules ............................. Passed 0.01 sec Start 35: KatranLbTest.clearSrcRules 35/56 Test #35: KatranLbTest.clearSrcRules ........................... Passed 0.01 sec Start 36: KatranLbTest.addFewInvalidNets 36/56 Test #36: KatranLbTest.addFewInvalidNets ....................... Passed 0.01 sec Start 37: KatranLbTest.addInvalidDecapDst 37/56 Test #37: KatranLbTest.addInvalidDecapDst ...................... Passed 0.01 sec Start 38: KatranLbTest.addInvalidDecapDstNet 38/56 Test #38: KatranLbTest.addInvalidDecapDstNet ................... Passed 0.01 sec Start 39: KatranLbTest.addValidDecapDst 39/56 Test #39: KatranLbTest.addValidDecapDst ........................ Passed 0.01 sec Start 40: KatranLbTest.delValidDecapDst 40/56 Test #40: KatranLbTest.delValidDecapDst ........................ Passed 0.01 sec Start 41: KatranLbTest.delInvalidDecapDst 41/56 Test #41: KatranLbTest.delInvalidDecapDst ...................... Passed 0.01 sec Start 42: KatranLbTest.addMaxDecapDst 42/56 Test #42: KatranLbTest.addMaxDecapDst .......................... Passed 0.01 sec Start 43: VipTestF.testBatchUpdateReals 43/56 Test #43: VipTestF.testBatchUpdateReals ........................ Passed 0.04 sec Start 44: VipTestF.testBatchUpdateRealsWeight 44/56 Test #44: VipTestF.testBatchUpdateRealsWeight .................. Passed 0.05 sec Start 45: VipTestF.testGetRealsAndWeight 45/56 Test #45: VipTestF.testGetRealsAndWeight ....................... Passed 0.01 sec Start 46: VipTestF.testGetReals 46/56 Test #46: VipTestF.testGetReals ................................ Passed 0.02 sec Start 47: VipTest.testAddRemoveReal 47/56 Test #47: VipTest.testAddRemoveReal ............................ Passed 0.01 sec Start 48: EventPipeCallbackTest.SimpleCallbackTest 48/56 Test #48: EventPipeCallbackTest.SimpleCallbackTest ............. Passed 0.01 sec Start 49: EventPipeCallbackTest.LargeWriteTest 49/56 Test #49: EventPipeCallbackTest.LargeWriteTest ................. Passed 0.15 sec Start 50: TestMonitoringServiceCore.SimpleAcceptSubscription 50/56 Test #50: TestMonitoringServiceCore.SimpleAcceptSubscription ... Passed 0.01 sec Start 51: TestMonitoringServiceCore.SimpleErrors 51/56 Test #51: TestMonitoringServiceCore.SimpleErrors ............... Passed 0.01 sec Start 52: TestMonitoringServiceCore.EventIntersection 52/56 Test #52: TestMonitoringServiceCore.EventIntersection .......... Passed 0.01 sec Start 53: TestMonitoringServiceCore.RacingClients 53/56 Test #53: TestMonitoringServiceCore.RacingClients .............. Passed 0.01 sec Start 54: TestMonitoringServiceCore.SubscribeAndCancel 54/56 Test #54: TestMonitoringServiceCore.SubscribeAndCancel ......... Passed 0.01 sec Start 55: PcapWriterTest.SingleWriter 55/56 Test #55: PcapWriterTest.SingleWriter .......................... Passed 0.02 sec Start 56: PcapWriterTest.MultiWriter 56/56 Test #56: PcapWriterTest.MultiWriter ........................... Passed 0.01 sec 100% tests passed, 0 tests failed out of 56 Total Test time (real) = 1.04 sec + cd ../testing/ + ctest -v ./CMakeFiles ./CTestTestfile.cmake ./Makefile ./base64helpers-tests './base64helpers-tests[1]_include.cmake' './base64helpers-tests[1]_tests.cmake' ./cmake_install.cmake ./katran_tester ./libbase64_helpers.a ./libbpftester.a ./libkatran_test_provision.a ./libkatran_test_util.a ./libpcap_parser.a ctest: /usr/local/lib/libcurl.so.4: no version information available (required by ctest) Test project /home/ubuntu/ivanmorett/katran/_build/build/katran/lib/testing Start 1: Base64Tests.testEncode 1/2 Test #1: Base64Tests.testEncode ........... Passed 0.01 sec Start 2: Base64Tests.testDecode 2/2 Test #2: Base64Tests.testDecode ........... Passed 0.01 sec 100% tests passed, 0 tests failed out of 2 Total Test time (real) = 0.01 sec + popd ~/ivanmorett/katran/_build ``` Differential Revision: D55108012 Pulled By: lima1756
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Hi,
I am following the example setup as described in - https://github.com/facebookincubator/katran/blob/master/EXAMPLE.md. There are two ubuntu servers.
Server-1
Ubuntu 18.04.1 kernel version - 4.18.0.
This is to host katran server. Interface to bind ens4f0.201. IP assigned to this interface is IP-1.
Server-2
Ubuntu 16.04.4 LTS. Kernel version 4.10.0-27-generic.
This is to host back end real servers. Interface to bind is ens4f0.116. IP assigned to this interface is IP-2.
Ping is working fine between these two servers over these interfaces.
Server-1 ( hosting Katran server)
sudo ip tunnel add tun0 mode ipip local IP-1 remote IP-2 dev ens4f0.201
sudo ip link set up dev tun0
Server-2 ( hosting real backend servers)
sudo ip tunnel add tun0 mode ipip local IP-2 remote IP-1 dev ens4f0.116
sudo ip link set up dev tun0
Katan Server started -
sudo ./build/example_grpc/katran_server_grpc -balancer_prog ./deps/linux/bpfprog/bpf/balancer_kern.o -default_mac -forwarding_cores=0 -healthchecker_prog ./deps/linux/bpfprog/bpf/healthchecking_ipip.o -intf=ens4f0.201 -ipip_intf=tun0 -ipip6_intf=ipip60 -lru_size=10000
Note: i don't have IPv6 and hence here ipip60 is dummy. Without -ipip6_intf , it crashes.
VIP and real server IP added.
katran-master/example_grpc/goclient/bin$ ./main -A -t :22
2018/08/30 00:41:20 Adding service: 10.38.42.103:22 6
2018/08/30 00:41:20 Vip modified
exiting
katran-master/example_grpc/goclient/bin$ ./main -a -t :22 -r IP-2
Note: VIP is another IP from the same subnet of IP-1.
When ssh is attempted to the VIP 10.38.42.103, it's not working. Can you please tell me what is wrong in the setup?"ip a" doesn't show that VIP is bound to the interface where Katran server is running.
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