2242514 - After adding host to a scale-out HANA landscape, several services of the new host are not starting

Symptom

After executing the /hana/shared/HDM/global/hdb/install/bin/hdbaddhost command, the new host was added but after a restart of the host, the indexserver is not starting.

Environment

HANA DB scale-out landscape.

Reproducing the Issue

1. Execute the /hana/shared/HDM/global/hdb/install/bin/hdbaddhost command to add a new host to your HANA landcape.
2. Restart the newly added host.
3. All services are running except the indexserver.

Cause

The problem that occured when adding the host was caused by the fact that the newly added node tried to contact the nameserver via the public network which was not configured to receive requests since the listeninterface was already setup accordingly for the master node. The reason is because the [internal_hostname_resolution] section was configured manually within the global.ini file without using the hdblcm tool on operating system level. In this case, the 'internal_network' parameter in the [communication] section of global.ini was not added which will therefore lead to the problem.

Resolution

You need to use the hdblcm tool on operating system level to configure the dedicated network. When hdblcm is used, an additional parameter will be added to global.ini which is called 'internal_network'. Afterwards, the global.ini would look like this (example):
[communication]
internal_network = 192.168.100.0/24
listeninterface = 192.168.100.0/24
The 'internal_network' parameter would then lead to the [internal_hostname_resolution] section being correctly updated during the addhost operation and hence avoid the "connection refused" errors when starting up new nodes. The parameter can also be manually entered in the global.ini file.
Please also refer to chapter 3.3.1.2.1 of the SAP HANA Master Guide.

See Also

SAP HANA Master Guide chapter 3.3.1.2.1 'Internal Host Name Resolution'

Keywords

HANA, hdblcm, add host, internal host name resolution, listenerinterface

Header Data

Released On	11.11.2015 15:50:47
Release Status	Released to Customer
Component	HAN-DB SAP HANA Database
Priority	Normal
Category	Problem