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Chapter 3. Installing SAP HANA for a 2-node HA cluster setup

3.1. Installing a scale-up SAP HANA instance

Install the HANA instance with the same SID and instance number on all nodes. The setup of the instances must be identical.

Prerequisites

  • You have identical systems installed according to the OS requirements.
  • You have prepared the details for your HANA instances, see SAP HANA planning.
  • You have downloaded the SAP HANA installation media from SAP Software Downloads and the media is available on each node.

Procedure

  1. Go to the directory which contains the installation media, for example /sapmedia/hana: 

    [root]# cd /sapmedia/hana
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  2. Unpack the installation media: 

    [root]# unzip IMDB_SERVER20_*.ZIP
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  3. Go into the path of the unpacked installation media: 

    [root]# cd /sapmedia/hana/DATA_UNITS/HDB_LCM_LINUX_<arch>
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  4. Run the SAP HANA Lifecycle Management tool (HDBLCM) for an interactive installation: 

    [root]# ./hdblcm
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    In the interactive mode the installer asks you for all the required information, including the System ID (SID), Installation Number (instance), the filesystem location of data and log volumes, and more.

  5. Repeat steps 1-4 on all nodes.

Verification

  1. Switch to the <sid>adm user: 

    [root]# su - rh1adm
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  2. Check the HANA instance runtime information as user <sid>adm: 

    rh1adm $ HDB info
USER          PID     PPID  %CPU        VSZ        RSS COMMAND
rh1adm      17897    17895   0.0       8972       5248 -sh
rh1adm      24461    17897   0.0       7524       3840  \_ /bin/sh /usr/sap/RH1/HDB02/HDB info
rh1adm      24490    24461   0.0      10104       3456      \_ ps fx -U rh1adm -o user:8,pid:8,ppid:8,pcpu:5,vsz:10,rss:10,args
rh1adm      12924        1   0.0     581456      40072 hdbrsutil  --start --port 34203 --volume 3 --volumesuffix ...
rh1adm      12284        1   0.0     581376      40000 hdbrsutil  --start --port 34201 --volume 1 --volumesuffix ...
rh1adm      12193        1   0.0       9028       3028 sapstart pf=/usr/sap/RH1/SYS/profile/RH1_HDB02_node1
rh1adm      12200    12193   0.0     476372      87652  \_ /usr/sap/RH1/HDB02/node1/trace/hdb.sapRH1_HDB02 -d -nw -f /usr/sap/RH1/HDB02/node1/daemon.ini pf=/usr/sap/RH1/SYS/profile/RH1_HDB02_node1
rh1adm      12222    12200   9.6   19986956   16126960      \_ hdbnameserver
rh1adm      12787    12200   0.3    1464980     214468      \_ hdbcompileserver
rh1adm      12790    12200  94.0    7669612    6970948      \_ hdbpreprocessor
rh1adm      12828    12200  12.7   19716232   14994012      \_ hdbindexserver -port 34203
rh1adm      12831    12200   1.1    4995088    1465724      \_ hdbxsengine -port 34207
rh1adm      13269    12200   0.4    2660096     461776      \_ hdbwebdispatcher
rh1adm      12016        1   0.0     499404      58336 /usr/sap/RH1/HDB02/exe/sapstartsrv pf=/usr/sap/RH1/SYS/profile/RH1_HDB02_node1
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  3. Additionally, you can verify the landscapeHostConfiguration.py output for status ok: 

    rh1adm $ cdpy; python landscapeHostConfiguration.py
| Host  | Host   | Host   | Failover | Remove | Storage   | Storage   | Failover | Failover | NameServer | NameServer | IndexServer | IndexServer | Host   | Host   | Worker  | Worker  |
|       | Active | Status | Status   | Status | Config    | Actual    | Config   | Actual   | Config     | Actual     | Config      | Actual      | Config | Actual | Config  | Actual  |
|       |        |        |          |        | Partition | Partition | Group    | Group    | Role       | Role       | Role        | Role        | Roles  | Roles  | Groups  | Groups  |
| ----- | ------ | ------ | -------- | ------ | --------- | --------- | -------- | -------- | ---------- | ---------- | ----------- | ----------- | ------ | ------ | ------- | ------- |
| node1 | yes    | ok     |          |        |         1 |         1 | default  | default  | master 1   | master     | worker      | master      | worker | worker | default | default |

overall host status: ok
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  4. Repeat the steps on all nodes. Note that the HANA profiles contain the individual node name in the format <SID>_HDB<instance>_<node>.

3.2. Disabling SAP HANA instance autostart

The cluster controls startup and shutdown of the HANA instance in a HA cluster setup. You must configure the HANA instance profile to not automatically start the instance itself.

Procedure

  1. Go to the HANA instance profile directory: 

    [root]# cd /usr/sap/<SID>/SYS/profile
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  2. Edit the instance profile: 

    [root]# vi <SID>_HDB<instance>_<hostname>
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    Ensure that Autostart is set to 0.

  3. Repeat steps 1-2 for each HANA instance that will be managed as part of the HA cluster.

Verification

  • Check that Autostart = 0 is set in the instance profiles of all HANA instances that will be managed by the HA cluster: 

    [root]# grep Autostart /usr/sap/RH1/SYS/profile/*
/usr/sap/RH1/SYS/profile/RH1_HDB02_node1:Autostart = 0
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