3425919 - Nameserver fails to start error SSFS-1400: File "/tmp/SSFS_<SID>.KEY" cannot be opened in mode "rb": Permission denied (errno = 13)

The instance fails to start due to nameserver not starting.

Nameserver trace contains the error:

w Crypto           RawRootKeyStore.cpp(00086) : Error during reading of SSFS. (Retry no: 0, next retry in 1ms).
exception  1: no.301103  (Crypto/Ssfs/RootKeyAccess/RawAccess/RawRootKeyStoreAccessor.cpp:56) TID: 146464
    RawRootKeyStoreReader::read: SSFS-1400: File "/tmp/SSFS_<SID>.KEY" cannot be opened in mode "rb": Permission denied (errno = 13)
exception throw location:
 1: 0x00007f7130d595cb in Crypto::SecureStore::RootKeyAccess::RawAccess::RawRootKeyStoreReader::read(Crypto::Buffer&)+0x37 at RawRootKeyStoreAccessor.cpp:83 (libhdbbasement.so)
 2: 0x00007f7130d6090f in Crypto::SecureStore::RootKeyAccess::RawAccess::RawRootKeyStore<true, true>::read(ltt::basic_string<char, ltt::char_traits<char>, ltt::integral_constant<int, 64> > const&, ltt::basic_string<char, ltt::char_traits<char>, ltt::integral_constant<int, 64> > const&, ltt::basic_string<char, ltt::char_traits<char>, ltt::integral_constant<int, 64> > const&, ltt::basic_string<char, ltt::char_traits<char>, ltt::integral_constant<int, 64> > const&, Crypto::Buffer&, bool)+0xcb at RawRootKeyStore.cpp:71 (libhdbbasement.so)
 3: 0x00007f7138f5ca6e in Crypto::SecureStore::Consistency::RootKeyStoreConsistencyProvider::doCheckForKeyType(ltt::basic_string<char, ltt::char_traits<char>, ltt::integral_constant<int, 64> >&, Crypto::SecureStore::RootKeyAccess::SsfsAccessorBase const*, char const*)+0x23a at RootKeyStoreConsistencyProvider.cpp:215 (libhdbrskernel.so)
 4: 0x00007f7138f55451 in Crypto::SecureStore::Consistency::RootKeyStoreConsistencyProvider::checkForMasterKey(ltt::basic_string<char, ltt::char_traits<char>, ltt::integral_constant<int, 64> >&)+0xe0 at RootKeyStoreConsistencyProvider.cpp:279 (libhdbrskernel.so)
 5: 0x00007f7130d6f11f in Crypto::SecureStore::Consistency::RootKeyStoreConsistencyChecker::checkForMasterKey(ltt::basic_string<char, ltt::char_traits<char>, ltt::integral_constant<int, 64> >&)+0x6b at RootKeyStoreConsistencyChecker.cpp:387 (libhdbbasement.so)
 6: 0x00007f7156ba0a68 in NameServer::TREXNameServer::getStaticInfo(NameServer::TNode&)+0xa74 at TREXNameServer.cpp:3071 (libhdbns.so)
 7: 0x00007f7156b8b0d0 in NameServer::TREXNameServer::setStarting(NameServer::ServiceType, char const*, char const*, bool)+0x1b0 at TREXNameServer.cpp:4877 (libhdbns.so)
 8: 0x00007f7156ba8886 in NameServer::TREXNameServer::assign(NameServer::ServiceStartInfo&)+0xcd2 at TREXNameServer.cpp:2010 (libhdbns.so)
 9: 0x00005629aca1fdc4 in TRexAPI::TREXIndexServer::assign(NameServer::ServiceStartInfo&, bool, TREX_ERROR::TRexError&)+0x210 at TREXIndexServer.cpp:1087 (hdbnameserver)
10: 0x00005629aca26a67 in TRexAPI::AssignThread::run(void*)+0x33 at TREXIndexServer.cpp:539 (hdbnameserver)
11: 0x00007f7131192378 in TrexThreads::PoolThread::run()+0x984 at PoolThread.cpp:462 (libhdbbasement.so)
12: 0x00007f71311941d0 in TrexThreads::PoolThread::run(void*&)+0x10 at PoolThread.cpp:142 (libhdbbasement.so)
13: 0x00007f712bd8e415 in Execution::Thread::staticMainImp(Execution::Thread*)+0x531 at Thread.cpp:522 (libhdbbasis.so)
14: 0x00007f712bd7e218 in Execution::pthreadFunctionWrapper(Execution::Thread*)+0x1e4 at ThreadInterposition.cpp:639 (libhdbbasis.so)
15: 0x00007f712b3c7744 in start_thread+0xc0 (libpthread.so.0)
16: 0x00007f7129ac8aad in __clone+0x69 (libc.so.6)

SAP HANA Platform Edition

KBA , HAN-DB-SEC , SAP HANA Security & User Management , HAN-DB-ENG , SAP HANA DB Engines , HAN-DB-HA , SAP HANA High Availability (System Replication, DR, etc.) , Problem