System error: Connect on non-blocking socket failed. rc=111: Connection refused

[lxiang]

Hi experts:

Could you please help to analyze the error log below to figure out why such error occurred?

thanks

[64053]{-1}[-1/-1] 2023-10-10 17:05:50.764039 i EventHandler EventManagerImpl.cpp(01019) : AutoEventHandlerCallback::initial(period= off)
[64053]{-1}[-1/-1] 2023-10-10 17:05:50.764041 i EventHandler EventManagerImpl.cpp(01015) : AutoEventHandlerCallback::reconfigure(period= off --> 60)
[64053]{-1}[-1/-1] 2023-10-10 17:05:50.773251 i Basis CommandUtil.cpp(00065) : command: /usr/sap/HXE/HDB90/exe/hdbnsutil -createSecureStore
[64053]{-1}[-1/-1] 2023-10-10 17:05:50.773460 i Basis CommandUtil.cpp(00098) : called by user 'hxeadm' with UID: 1002 (parent process command line '*******************************************************************************************************************************************************************hdbinst*************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************' with PID: 63991)

[64053]{-1}[-1/-1] 2023-10-10 17:05:50.773472 w HanaNetRPC HanaNetExt.cpp(00065) : initializing network for client-only operation
[64053]{-1}[-1/-1] 2023-10-10 17:05:50.807602 i FileIO LockFile.cpp(00330) : Cannot open pid file </usr/sap/HXE/HDB90/hxe-binary-rh8-01.srs.c.na-us-1.cloud.sap//lock/hdbdaemon@39000.pid>: 2 (No such file or directory)
[64053]{-1}[-1/-1] 2023-10-10 17:05:50.807618 w DaemonClient Client.cpp(01003) : Cannot read daemon pid from its lock file "/usr/sap/HXE/HDB90/hxe-binary-rh8-01.srs.c.na-us-1.cloud.sap//lock/hdbdaemon@39000.pid"
[64053]{-1}[-1/-1] 2023-10-10 17:05:50.807720 e OSMemory mmSharedMemoryProxy.cpp(00576) : shmget(19001, 0, 384) failed2 (No such file or directory)
[64053]{-1}[-1/-1] 2023-10-10 17:05:50.809387 w commlib commlibImpl.cpp(00924) : Connection to '127.0.0.1:39001' failed: exception 1: no.2110017 (Basis/IO/Stream/impl/NetworkChannel.cpp:2860) TID: 64053
System error: Connect on non-blocking socket failed. rc=111: Connection refused. channel={<NetworkChannel>={<NetworkChannelBase>={this=140465278794264, fd=19, refCnt=1, local=127.0.0.1/28078_tcp, remote=127.0.0.1/39001_tcp, state=ConnectWait, pending=[----]}}}; $Context$=[3f981ff7a370019,127.0.0.1:28078,127.0.0.1:39001,TRN,0]
exception throw location:
0: 0x00007fc0bee140c9 in Stream::NetworkChannel::connectBlocking(int)+0x8c5 (libhdbbasis.so)
1: 0x00007fc0bee292af in Stream::NetworkChannelManager::connect(NetworkAccess::NetworkAddress const*, NetworkAccess::NetworkAddress const&, Stream::NetworkChannelParameters const&, bool, ltt::smartptr_handle<Stream::ChannelCallback>*, Stream::NetworkChannelComponent, int, ltt::allocator&)+0x57b (libhdbbasis.so)
2: 0x00007fc0bfae0726 in comm::connect(void*, char const*, unsigned short, int, Crypto::Configuration*, Stream::NetworkChannelComponent)+0x182 (libhdbnetrpc.so)
3: 0x00007fc0bfb71110 in TrexNet::Channel::open(char const*, TrexNet::RequestParameters const&)+0x350 (libhdbnetrpc.so)
4: 0x00007fc0bfb82005 in TrexNet::ServerRep::openNewChannel(char const*, TrexNet::RequestParameters const&)+0x151 (libhdbnetrpc.so)
5: 0x00007fc0bfb9e240 in TrexNet::Requestor::getChannel(char const*, unsigned short, TrexNet::RequestParameters const&)+0x3d0 (libhdbnetrpc.so)
6: 0x00007fc0bfbfb7de in ltt::operator<<(ltt::basic_ostream<char, ltt::char_traits<char> >&, ltt::source_location const&)+0x679a (libhdbnetrpc.so)
7: 0x00007fc0bfb8f5b5 in TrexNet::Request::Request(ltt::basic_string_view<char, ltt::char_traits<char> >, Basis::HostAndPort const&, TrexNet::RequestParameters)+0xe1 (libhdbnetrpc.so)
8: 0x00007fc0c3cf1df6 in NameServer::TNSClientCacheBase<NameServer::TNSClientErrorGuard<true> >::refreshActiveServers(ltt_adp::basic_string<char, ltt::char_traits<char>, ltt::integral_constant<bool, true> > const&, ltt_adp::basic_string<char, ltt::char_traits<char>, ltt::integral_constant<bool, true> > const&)+0x3f02 (libhdbbasement.so)

[lxiang]

it works well on my SLE platform but failed on Redhat 8.5, could you please suggest what I should check and change?
thanks

[mamartins]

Maybe you RHEL 8.5 is missing some packages.

Did your SLES installation was the VM type (not the binary one)? If so, the packages dependencies are already taken care.

https://www.redhat.com/en/blog/getting-started-your-sap-hana-journey-rhel-8-sap-solutions