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SAP HANA High Availability Cross-Zone Solution on Alibaba Cloud

With SUSE Linux Enterprise Server for SAP Applications

SUSE Best Practices

SAP

Authors
Jinhui Li, Product Manager SAP Solutions on Alibaba Cloud (AliCloud Germany)
Bernd Schubert, SAP Solution Architect (SUSE)
Image
Image
SUSE Linux Enterprise Server for SAP Applications 12 and later
Alibaba Cloud
Date: 2024-11-12

SUSE® Linux Enterprise Server for SAP Applications is optimized in various ways for SAP* applications. This document explains how to deploy an SAP HANA High Availability solution cross different Zones on Alibaba Cloud. It is based on SUSE Linux Enterprise Server for SAP Applications 12 SP2. The concept however can also be used with SUSE Linux Enterprise Server for SAP Applications 12 SP3 or newer.

Disclaimer: Documents published as part of the SUSE Best Practices series have been contributed voluntarily by SUSE employees and third parties. They are meant to serve as examples of how particular actions can be performed. They have been compiled with utmost attention to detail. However, this does not guarantee complete accuracy. SUSE cannot verify that actions described in these documents do what is claimed or whether actions described have unintended consequences. SUSE LLC, its affiliates, the authors, and the translators may not be held liable for possible errors or the consequences thereof.

1 Solution Overview

1.1 SAP HANA System Replication

SAP HANA provides a feature called System Replication which is available in every SAP HANA installation. It offers an inherent disaster recovery support.

For details, refer to the SAP Help Portal, HANA system replication:

https://help.sap.com/viewer/6b94445c94ae495c83a19646e7c3fd56/2.0.03/en-US/b74e16a9e09541749a745f41246a065e.html.

1.2 High Availability Extension Included with SUSE Linux Enterprise Server for SAP Applications

The SUSE High Availability Extension is a high availability solution based on Corosync and Pacemaker. With SUSE Linux Enterprise Server for SAP Applications, SUSE provides SAP specific Resource Agents (SAPHana, SAPHanaTopology etc.) used by Pacemaker. This helps you to build your SAP HANA HA solution up more effectively.

For details, refer to the latest version of the document SAP HANA SR Performance Optimized Scenario at the SUSE documentation Web page:

https://documentation.suse.com/sbp/sap/

1.3 Architecture Overview

This document guides you on how to deploy an SAP HANA High Availability (HA) solution cross different Zones. The following list contains a brief architecture overview:

  1. The High Availability Extension included with SUSE Linux Enterprise Server for SAP Applications is used to set up the HA Cluster;

  2. SAP HANA System Replication is activated between the two HANA nodes;

  3. Two HANA nodes are located in different Zones of the same Region;

  4. The Alibaba Cloud Specific Virtual IP Resource Agent is used to allow Moving IP automatically switched to Active SAP HANA node; the Alibaba Cloud specific STONITH device is used for fencing.

Alibaba Cloud Architecture - Overview:

arch

Network Architecture - Overview:

network

1.4 Network Design

The following table contains information for the Network design.

hostname

role

heartbeat IP

business IP

virtual IP

hana0

HANA primary node

192.168.0.83

192.168.0.82

192.168.4.1

hana1

HANA secondary node

192.168.1.246

192.168.1.245

HANAStudio

HANA Studio

no

192.168.0.79

no

2 Infrastructure Preparation

The next sections contain information about how to prepare the infrastructure.

2.1 Infrastructure List

To set up your infrastructure, the following components are required:

2.2 Creating VPC

First, create a VPC via Console→Virtual Private Cloud→VPCs→Create VPC. In this example, a VPC named suse_hana_ha in the Region EU Central 1 (Frankfurt) has been created:

vpc

There should be at least two VSwitches (subnets) defined within the VPC network. Each VSwitch should be bound to a different Zone. In this example, the following two VSwitches (subnets) are defined:

  • Switch1 192.168.0.0/24 Zone A, for SAP HANA Primary Node;

  • Switch2 192.168.1.0/24 Zone B, for SAP HANA Secondary Node;

vswitch

2.3 Creating ECS Instances

Two ECS instances are created in different Zones of the same VPC via Console→Elastic Compute Service ECS→Instances→Create Instance. Choose the "SUSE Linux Enterprise Server for SAP Applications" image from the Image Market place.

In this example, two ECS instances (hostname: hana0 and hana1) are created in the Region EU Central 1, Zone A and Zone B, within the VPC: suse_hana_ha, with SUSE Linux Enterprise Server for SAP Applications 12 SP2 image from the Image Market Place. Host hana0 is the primary SAP HANA database node, and hana1 is the secondary SAP HANA database node.

instance

2.4 Creating ENIs and Binding to ECS Instances

Create two ENIs via Console→ Elastic Compute Service ECS→Network and Security→ENI, and attach one for each ECS instance, for HANA System Replication purposes. Configure the IP addresses of the ENIs to the subnet for HANA System Replication only.

In this example, the ENIs are attached to the ECS instances hana0 and hana1. In addition, the IP addresses are configured as 192.168.0.83 and 192.168.1.246 within the same VSwitches of hana0 and hana1, and put into the VPC: suse_hana_ha

ENI

Meanwhile, within the Guest OS, /etc/hosts should also be configured.

According to the example at hand, run the following two commands on both sites:

echo "192.168.0.82 hana0 hana0" >> /etc/hosts

echo "192.168.1.245 hana1 hana1" >> /etc/hosts

The output looks as follows:

hosts

2.5 Creating NAT Gateway and configure SNAT entry

Now create an NAT Gateway attached to the given VPC. In the example at hand, an NAT Gateway named suse_hana_ha_GW has been created:

NATGW

After having creating the NAT Gateway, you need to create a corresponding SNAT entry to allow ECS instances within the VPC to access public addresses on the Internet.

Note
Note

An Alibaba Cloud specific STONITH device and Virtual IP Resource Agent are mandatory for the cluster. They need to access Alibaba Cloud OpenAPI through a public domain.

In the example at hand, two SNAT entries have been created, for ECS instances located in a different network range:

SNAT

2.6 Creating STONITH Device and Virtual IP Resource Agent

Download the STONITH fencing software with the following command:

wget http://sap-automation-cn-beijing.oss-cn-beijing.aliyuncs.com/software/aliyun-pacemaker_new.zip

For an HA solution, a fencing device is an essential requirement. Alibaba Cloud provides its own STONITH device, which allows the servers in the HA cluster to shut down the node that is not responsive. The STONITH device leverages Alibaba Cloud OpenAPI underneath the ECS instance, which is similar to a physical reset / shutdown in an on-premise environment.

aliyunpacemaker

Extract the package and install the software.

tar –xvf aliyun-ecs-pacemaker.tar.gz
./install
installpacemaker

Install Alibaba Cloud OpenAPI SDK.

pip install aliyun-python-sdk-ecs aliyun-python-sdk-vpc aliyuncli
SDKInstall

Configure Alibaba Cloud OpenAPI SDK and Client.

aliyuncli configure

Get your Access Key as shown below:

AccessKey

3 Software Preparation

The next sections contain information about the required software.

3.1 Software List

The following software must be available: - SUSE Linux Enterprise Server for SAP Applications 12 SP2 or newer - HANA Installation Media - SAP Host Agent Installation Media

3.2 High Availability Extension Installation

Both ECS instances are created with the SUSE Linux Enterprise Server for SAP Applications image. On both ECS instances, the High Availability Extension (with the major software components: Corosync and Pacemaker), and the package SAPHanaSR should be installed. To do so, you can use zypper.

First, install the pattern High Availability Extension on both nodes:

zypper in -t pattern ha_sles

Now, install the Resource Agents for controlling the SAP HANA system replication on both cluster nodes:

zypper in SAPHanaSR SAPHanaSR-doc

3.3 SAP HANA Installation

Next, install the SAP HANA software on both ECS instances. Make sure the SAP HANA SID and Instance Number are the same (this is required by SAP HANA System Replication). It is recommended to use hdblcm to do the installation. For details refer to the SAP HANA Server Installation and Update Guide at https://help.sap.com/viewer/2c1988d620e04368aa4103bf26f17727/2.0.03/en-US.

In the example at hand, both node are installed with SAP HANA (Rev. 2.00.030.00), and SID: JL0, Instance Number: 00.

HANAVersion

3.4 SAP Host Agent Installation

When you have finished the HANA installation with hdblcm as mentioned above, the SAP Host Agent should already be installed on your server. To install it manually, refer to the article Installing SAP Host Agent Manually: https://help.sap.com/saphelp_nw73ehp1/helpdata/en/8b/92b1cf6d5f4a7eac40700295ea687f/content.htm?no_cache=true.

Check the SAP Host Agent status after you have installed SAP HANA with hdblcm on hana0 and hana1:

HostControl

4 Configuring SAP HANA System Replication

The following sections detail how to configure SAP HANA System Replication.

4.1 Backing up SAP HANA on Primary ECS Instance

To do a backup on SAP HANA, you can either use SAP HANA studio or hdbsql as the client command tool.

The backup command is

  • For HANA 1 single container mode:

BACKUP DATA USING FILE('COMPLETE_DATA_BACKUP');
  • For HANA 2 with multitenant as default mode (You should back up systemDB and all tenantDB as shown below in the example):

BACKUP DATA for <DATABASE> using FILE('COMPLETE_DATA_BACKUP')

Command line example:

BACKUP DATA for SYSTEMDB using FILE('COMPLETE_DATA_BACKUP')
BACKUP DATA for JL0 using FILE('COMPLETE_DATA_BACKUP')

In this example for HDB Studio, the SAP HANA database backup is executed on both ECS instances as shown below:

backup

4.2 Configuring SAP HANA System Replication on Primary Node

Log on to the primary node with: su - <sid>adm. [sidadm] should be replaced by your SAP HANA database SID. In our example it is su - jl0adm;

Stop HANA with: HDB stop.

Change the following file content:

vi /hana/shared/<SID>/global/hdb/custom/config/global.ini

Add the following content:

[system_replication_hostname_resolution]
<IP> = <HOSTNAME>

[IP] should be the address of the ENI (heartbeat IP address for SAP HANA system replication) attached to the Secondary node;

[HOSTNAME] should be the hostname of the Secondary node;

In the example at hand, the configuration is as follows:

[system_replication_hostname_resolution]

192.168.1.246 = hana1

4.3 Configuring SAP HANA System Replication on Secondary Node

Perform the same steps as outlined above for the Primary node on the Secondary node. However, do not forget to use here the IP and hostname of the Primary node instead of the Secondary node.

In the example at hand, the configuration is as follows:

[system_replication_hostname_resolution]

192.168.0.83 = hana0

4.4 Enable SAP HANA System Replication on Primary Node

Log on to the primary node with: su - <sid>adm;

Start HANA with: HDB start;

Enable System Replication with:

hdbnsutil -sr_enable --name= [primary location name]

[primary location name] should be replaced by the location of your primary SAP HANA node.

For the example at hand, the following command is used:

hdbnsutil -sr_enable --name=hana0
Note
Note

All of the above operations are done on the Primary node.

4.5 Register the Secondary Node to the Primary SAP HANA Node

Log on to the secondary node with: su - <sid>adm;

Stop SAP HANA with: HDB stop;

Register the Secondary SAP HANA node to the Primary SAP HANA node by running the following command:

hdbnsutil -sr_register --remoteHost=[location of primary Node] --remoteInstance=[instance number of primary node] --replicationMode=sync --name=[location of the secondary node] --operationMode=logreplay

For the example at hand, the following command is used:

hdbnsutil -sr_register --name=hana1 --remoteHost=hana0 --remoteInstance=00 --replicationMode=sync --operationMode=logreplay

Start SAP HANA with: HDB start;

Verify the System Replication Status with the following command:

hdbnsutil -sr_state

In the example at hand, the following status is displayed on the secondary SAP HANA node hana1:

HSRStatus
Note
Note

All of the above operations are done on the Secondary node.

5 Configuring High Availability Extension for SAP HANA

5.1 Configuration of Corosync

It is recommended that you add more redundancy for messaging (Heartbeat) by using separate ENIs attached to the ECS instances with a separate network range.

On Alibaba Cloud, it is strongly suggested to only use Unicast for the transport setting in Corosync.

Follow the steps below to configure Corosync:

  • Create Keys

Run corosync-keygen on the Primary SAP HANA node. The generated key will be located in the file: /etc/corosync/authkey.

In the example at hand, the command is executed on hana1:

authKey
  • Configure /etc/corosync/corosync.conf as root on the Primary SAP HANA node with the following content:

totem {
        version: 2
        token: 5000
        token_retransmits_before_loss_const: 6
        secauth: on
        crypto_hash: sha1
        crypto_cipher: aes256
        clear_node_high_bit: yes
        interface {
            ringnumber: 0
            bindnetaddr: **IP-address-for-heart-beating-for-the-current-server**
            mcastport: 5405
            ttl: 1
        }
        # On Alibaba Cloud, transport should be set to udpu, means: unicast
        transport: udpu
}
logging {
      fileline: off
      to_logfile: yes
      to_syslog: yes
      logfile: /var/log/cluster/corosync.log
      debug: off
      timestamp: on
      logger_subsys {
          subsys: QUORUM
          debug: off
      }
}
nodelist {
    node {
        ring0_addr: **ip-node-1**
        nodeid: 1
    }
    node {
        ring0_addr: **ip-node-2**
        nodeid: 2
    }
}
quorum {
    # Enable and configure quorum subsystem (default: off)
    # see also corosync.conf.5 and votequorum.5
    provider: corosync_votequorum
    expected_votes: 2
    two_node: 1
}

IP-address-for-heart-beating-for-the-current-server should be replaced by the IP address of the current server, used for messaging (heartbeat) or SAP HANA System Replication. In the example at hand, the IP address of ENI of the current node (192.168.0.83 for hana0 and 192.168.1.246 for hana1) is used.

Note
Note

This value will be different on Primary and Secondary node. The nodelist directive is used to list all nodes in the cluster.

ip-node-1 and ip-node-2 should be replaced by the IP addresses of the ENIs attached to ECS instances for Heartbeat purpose or HANA System Replication purpose. In the example at hand, it should be 192.168.0.83 for hana0 and 192.168.1.246 for hana1.

After completing the editing of /etc/corosync/corosync.conf on the Primary HANA node, copy the files /etc/corosync/authkey and /etc/corosync/corosync.conf to /etc/corosync on the Secondary SAP HANA node with the following command:

scp /etc/corosync/authkey root@**hostnameOfSecondaryNode**:/etc/corosync

In the example at hand, the following command is executed:

scpkey1

After you have copied the corosync.conf to the Secondary node, configure the bindnetaddr as above to the local heart beating IP address.

5.2 Configuration of Pacemaker

For the SAP HANA High Availability solution, you need to configure seven resources and the corresponding constraints in Pacemaker.

Note
Note

The following Pacemaker configuration only needs to be done on one node. It is usually done on the Primary node.

5.2.1 Cluster Bootstrap and More

Add the configuration of the bootstrap and default setting of the resource and operations to the cluster. Save the following scripts in a file: crm-bs.txt.

property $id='cib-bootstrap-options' \
              stonith-enabled="true" \
              stonith-action="off" \
              stonith-timeout="150s"
rsc_defaults $id="rsc-options" \
              resource-stickness="1000"    \
              migration-threshold="5000"
op_defaults $id="op-options" \
              timeout="600"

Execute the command below to add the setting to the cluster:

crm configure load update crm-bs.txt

5.2.2 STONITH Device

This part defines the Aliyun STONITH devices in the cluster.

Save the following scripts in a file for SLES12 SP2 and older releases: crm-stonith.txt.

primitive res_ALIYUN_STONITH_1 stonith:fence_aliyun \
			op monitor interval=120 timeout=60 \
        	params pcmk_host_list=<primary node hostname> port=<primary node instance id>  \
        	access_key=<access key> secret_key=<secret key> \
        	region=<region> \
        	meta target-role=Started
primitive res_ALIYUN_STONITH_2 stonith:fence_aliyun \
        	op monitor interval=120 timeout=60 \
			params pcmk_host_list=<secondary node hostname> port=<secondary node instance id> \
        	access_key=<access key> secret_key=<secret key> \
        	region=<region> \
        	meta target-role=Started
			location loc_<primary node hostname>_stonith_not_on_<primary node hostname> res_ALIYUN_STONITH_1 -inf: <primary node hostname>
			#Stonith 1 should not run on primary node because it is controlling primary node
			location loc_<secondary node hostname>_stonith_not_on_<secondary node hostname> res_ALIYUN_STONITH_2 -inf: <secondary node hostname>
			#Stonith 2 should not run on secondary node because it is controlling secondary node

Save the following scripts in a file for SLES12 SP3 and newer releases: crm-stonith.txt.

primitive res_ALIYUN_STONITH_1 stonith:fence_aliyun \
			op monitor interval=120 timeout=60 \
        	params plug=<primary node instance id>  \
        	access_key=<access key> secret_key=<secret key> \
        	region=<region> \
        	meta target-role=Started
primitive res_ALIYUN_STONITH_2 stonith:fence_aliyun \
        		op monitor interval=120 timeout=60 \
		params plug=<secondary node instance id> \
        	access_key=<access key> secret_key=<secret key> \
        	region=<region> \
        	meta target-role=Started
			location loc_<primary node hostname>_stonith_not_on_<primary node hostname> res_ALIYUN_STONITH_1 -inf: <primary node hostname>
			#Stonith 1 should not run on primary node because it is controlling primary node
			location loc_<secondary node hostname>_stonith_not_on_<secondary node hostname> res_ALIYUN_STONITH_2 -inf: <secondary node hostname>
			#Stonith 2 should not run on secondary node because it is controlling secondary node

Be sure to implement the following changes:

  • [primary node hostname] / [secondary node hostname] should be replaced by the real hostname of your primary and secondary hostname, in our case is hana0 and hana1.

  • [primary node instance id] / [secondary node instance id] should be replaced by the real instance-id of your ECS instance, you can get this from the Alibaba Cloud console. For SLES 12 SP3 or newer releases, please use plug instead of port.

  • [access key] should be replaced with real access key.

  • [secret key] should be replaced with real secret key.

  • [region] should be replaced with real region name where the node is located.

Execute the command below to add the resource to the cluster:

crm configure load update crm-stonith.txt

5.2.3 SAPHanaTopology

This part defines an SAPHanaTopology RA, and a clone of the SAPHanaTopology on both nodes in the cluster. Save the following scripts in a file: crm-saphanatop.txt.

primitive rsc_SAPHanaTopology_<SID>_HDB<instance number> ocf:suse:SAPHanaTopology \
        operations $id="rsc_SAPHanaTopology_<SID>_HDB<instance number>-operations" \
           op monitor interval="10" timeout="600"  \
           op start interval="0" timeout="600" \
           op stop interval="0" timeout="300" \
           params SID="<SID>" InstanceNumber="<instance number>"
clone cln_SAPHanaTopology_<SID>_HDB<instance number> rsc_SAPHanaTopology_<SID>_HDB<instance number> \
        meta clone-node-max="1" interleave="true"

Be sure to implement the following changes:

  • [SID] should be replaced by the real SAP HANA SID.

  • [instance number] should be replaced by the real SAP HANA Instance Number.

Execute the command below to add the resources to the cluster:

crm configure load update crm-saphanatop.txt

5.2.4 SAPHana

This part defines an SAPHana RA, and a multi-state resource of SAPHana on both nodes in the cluster. Save the following scripts in a file: crm-saphana.txt.

primitive rsc_SAPHana_<SID>_HDB<instance number> ocf:suse:SAPHana \
        operations $id="rsc_SAPHana_<SID>_HDB<instance number>-operations" \
        op start interval="0" timeout="3600" \
        op stop interval="0" timeout="3600" \
        op promote interval="0" timeout="3600" \
        op monitor interval="60" role="Master" timeout="700" \
        op monitor interval="61" role="Slave" timeout="700" \
        params SID="<SID>" InstanceNumber="<instance number>" PREFER_SITE_TAKEOVER="true" \
        DUPLICATE_PRIMARY_TIMEOUT="7200" AUTOMATED_REGISTER="false"
ms msl_SAPHana_<SID>_HDB<instance number> rsc_SAPHana_<SID>_HDB<instance number> \
        meta clone-max="2" clone-node-max="1" interleave="true"

Be sure to implement the following changes:

  • [SID] should be replaced by the real SAP HANA SID.

  • [instance number] should be replaced by the real SAP HANA Instance Number.

Execute the command below to add the resources to the cluster:

crm configure load update crm-saphana.txt

5.2.5 Virtual IP

This part defines a Virtual IP RA in the cluster. Save the following scripts in a file: crm-vip.txt.

primitive res_vip_<SID>_HDB<instance number> ocf:aliyun:vpc-move-ip \
			op monitor interval=60 \
			meta target-role=Started \
			params address=<virtual_IPv4_address> routing_table=<route_table_ID> interface=eth0

Be sure to implement the following changes:

  • [virtual_IP4_address] should be replaced by the real IP address you prefer to provide the service.

  • [route_table_ID] should be replaced by the route table ID of your VPC.

  • [SID] should be replaced by the real SAP HANA SID.

  • [instance number] should be replaced by the real SAP HANA Instance Number.

Execute the command below to add the resource to the cluster:

crm configure load update crm-vip.txt

5.2.6 Constraints

Two constraints are organizing the correct placement of the virtual IP address for the client database access and the start order between the two resource agents SAPHana and SAPHanaTopology. Save the following scripts in a file: crm-constraint.txt.

colocation col_SAPHana_vip_<SID>_HDB<instance number> 2000: rsc_vip_<SID>_HDB<instance number>:started \
        	msl_SAPHana_<SID>_HDB<instance number>:Master
order ord_SAPHana_<SID>_HDB<instance number> Optional: cln_SAPHanaTopology_<SID>_HDB<instance number> \
        	msl_SAPHana_<SID>_HDB<instance number>

Be sure to implement the following changes:

  • [SID] should be replaced by the real SAP HANA SID;

  • [instance number] should be replaced by the real SAP HANA Instance Number;

Execute the command below to add the resource to the cluster:

crm configure load update crm-constraint.txt

5.3 Check the Cluster Status

Start the SAP HANA High Availability Cluster on both nodes:

systemctl start Pacemaker

Monitor the SAP HANA High Availability Cluster with the following commands:

systemctl status pacemaker
crm_mon –r

In the example at hand, the result looks as follows:

clusterStatushana0

Meanwhile, check if a new entry [virtual_IP4_address] is added into the route table of the VPC.

In the example at hand, the following result is shown:

RouteTableHANA0

5.4 Verify the High Availability Takeover

Shut down the primary node.

Check the status of Pacemaker as shown below:

clusterStatushana2

Compare the entry of the route table in the VPC as shown below:

RouteTableHANA1

6 Example

6.1 Example of Cluster Configuration

You can check the cluster configuration via the command crm configure show. For the example at hand, the cluster configuration should display the following content:

node 1: hana0 \
	attributes hana_jl0_vhost=hana0 hana_jl0_srmode=sync hana_jl0_remoteHost=hana1 hana_jl0_site=hana0 lpa_jl0_lpt=10 hana_jl0_op_mode=logreplay
node 2: hana1 \
	attributes lpa_jl0_lpt=1529509236 hana_jl0_op_mode=logreplay hana_jl0_vhost=hana1 hana_jl0_site=hana1 hana_jl0_srmode=sync hana_jl0_remoteHost=hana0
primitive res_ALIYUN_STONITH_0 stonith:fence_aliyun \
	op monitor interval=120 timeout=60 \
	params pcmk_host_list=hana0 port=i-gw8byf3m4f9a8os6rke8 access_key=<access key> secret_key=<secret key> region=eu-central-1 \
	meta target-role=Started
primitive res_ALIYUN_STONITH_1 stonith:fence_aliyun \
	op monitor interval=120 timeout=60 \
	params pcmk_host_list=hana1 port=i-gw8byf3m4f9a8os6rke9 access_key=<access key> secret_key=<secret key> region=eu-central-1 \
	meta target-role=Started
primitive rsc_SAPHanaTopology_JL0_HDB00 ocf:suse:SAPHanaTopology \
	operations $id=rsc_SAPHanaTopology_JL0_HDB00-operations \
	op monitor interval=10 timeout=600 \
	op start interval=0 timeout=600 \
	op stop interval=0 timeout=300 \
	params SID=JL0 InstanceNumber=00
primitive rsc_SAPHana_JL0_HDB00 ocf:suse:SAPHana \
	operations $id=rsc_SAPHana_JL0_HDB00-operations \
	op start interval=0 timeout=3600 \
	op stop interval=0 timeout=3600 \
	op promote interval=0 timeout=3600 \
	op monitor interval=60 role=Master timeout=700 \
	op monitor interval=61 role=Slave timeout=700 \
	params SID=JL0 InstanceNumber=00 PREFER_SITE_TAKEOVER=true DUPLICATE_PRIMARY_TIMEOUT=7200 AUTOMATED_REGISTER=false
primitive rsc_vip_JL0_HDB00 ocf:aliyun:vpc-move-ip \
	op monitor interval=60 \
	meta target-role=Started \
	params address=192.168.4.1 routing_table=vtb-gw8fii1g1d8cp14tzynub interface=eth0
ms msl_SAPHana_JL0_HDB00 rsc_SAPHana_JL0_HDB00 \
	meta clone-max=2 clone-node-max=1 interleave=true target-role=Started
clone cln_SAPHanaTopology_JL0_HDB00 rsc_SAPHanaTopology_JL0_HDB00 \
	meta clone-node-max=1 interleave=true
colocation col_SAPHana_vip_JL0_HDB00 2000: rsc_vip_JL0_HDB00:Started msl_SAPHana_JL0_HDB00:Master
location loc_hana0_stonith_not_on_hana0 res_ALIYUN_STONITH_0 -inf: hana0
location loc_hana1_stonith_not_on_hana1 res_ALIYUN_STONITH_1 -inf: hana1
order ord_SAPHana_JL0_HDB00 Optional: cln_SAPHanaTopology_JL0_HDB00 msl_SAPHana_JL0_HDB00
property cib-bootstrap-options: \
	have-watchdog=false \
	dc-version=1.1.15-21.1-e174ec8 \
	cluster-infrastructure=corosync \
	stonith-action=off \
	stonith-enabled=true \
	stonith-timeout=150s \
	last-lrm-refresh=1529503606 \
	maintenance-mode=false
rsc_defaults rsc-options: \
	resource-stickness=1000 \
	migration-threshold=5000
op_defaults op-options: \
	timeout=600

6.2 Example of /etc/corosync/corosync.conf

For the example at hand, the corosync.conf on hana1 should display the following content:

totem{
version: 2
token: 5000
token_retransmits_before_loss_const: 6
secauth: on
crypto_hash: sha1
crypto_cipher: aes256
clear_node_high_bit: yes
interface {
ringnumber: 0
bindnetaddr: 192.168.0.83
mcastport: 5405
ttl: 1
}
# On Alibaba Cloud, transport should be set to udpu, means: unicast
transport: udpu
}
logging {
fileline: off
to_logfile: yes
to_syslog: yes
logfile: /var/log/cluster/corosync.log
debug: off
timestamp: on
logger_subsys {
subsys: QUORUM
debug: off
}
}
nodelist {
node {
ring0_addr: 192.168.0.83
nodeid: 1
}
node {
ring0_addr: 192.168.1.246
nodeid: 2
}
}
quorum {
# Enable and configure quorum subsystem (default: off)
# see also corosync.conf.5 and votequorum.5
provider: corosync_votequorum
expected_votes: 2
two_node: 1
}

7 Reference

9 GNU Free Documentation License

Copyright © 2000, 2001, 2002 Free Software Foundation, Inc. 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.

0. PREAMBLE

The purpose of this License is to make a manual, textbook, or other functional and useful document "free" in the sense of freedom: to assure everyone the effective freedom to copy and redistribute it, with or without modifying it, either commercially or noncommercially. Secondarily, this License preserves for the author and publisher a way to get credit for their work, while not being considered responsible for modifications made by others.

This License is a kind of "copyleft", which means that derivative works of the document must themselves be free in the same sense. It complements the GNU General Public License, which is a copyleft license designed for free software.

We have designed this License in order to use it for manuals for free software, because free software needs free documentation: a free program should come with manuals providing the same freedoms that the software does. But this License is not limited to software manuals; it can be used for any textual work, regardless of subject matter or whether it is published as a printed book. We recommend this License principally for works whose purpose is instruction or reference.

1. APPLICABILITY AND DEFINITIONS

This License applies to any manual or other work, in any medium, that contains a notice placed by the copyright holder saying it can be distributed under the terms of this License. Such a notice grants a world-wide, royalty-free license, unlimited in duration, to use that work under the conditions stated herein. The "Document", below, refers to any such manual or work. Any member of the public is a licensee, and is addressed as "you". You accept the license if you copy, modify or distribute the work in a way requiring permission under copyright law.

A "Modified Version" of the Document means any work containing the Document or a portion of it, either copied verbatim, or with modifications and/or translated into another language.

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A section "Entitled XYZ" means a named subunit of the Document whose title either is precisely XYZ or contains XYZ in parentheses following text that translates XYZ in another language. (Here XYZ stands for a specific section name mentioned below, such as "Acknowledgements", "Dedications", "Endorsements", or "History".) To "Preserve the Title" of such a section when you modify the Document means that it remains a section "Entitled XYZ" according to this definition.

The Document may include Warranty Disclaimers next to the notice which states that this License applies to the Document. These Warranty Disclaimers are considered to be included by reference in this License, but only as regards disclaiming warranties: any other implication that these Warranty Disclaimers may have is void and has no effect on the meaning of this License.

2. VERBATIM COPYING

You may copy and distribute the Document in any medium, either commercially or noncommercially, provided that this License, the copyright notices, and the license notice saying this License applies to the Document are reproduced in all copies, and that you add no other conditions whatsoever to those of this License. You may not use technical measures to obstruct or control the reading or further copying of the copies you make or distribute. However, you may accept compensation in exchange for copies. If you distribute a large enough number of copies you must also follow the conditions in section 3.

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In the combination, you must combine any sections Entitled "History" in the various original documents, forming one section Entitled "History"; likewise combine any sections Entitled "Acknowledgements", and any sections Entitled "Dedications". You must delete all sections Entitled "Endorsements".

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A compilation of the Document or its derivatives with other separate and independent documents or works, in or on a volume of a storage or distribution medium, is called an "aggregate" if the copyright resulting from the compilation is not used to limit the legal rights of the compilation’s users beyond what the individual works permit. When the Document is included in an aggregate, this License does not apply to the other works in the aggregate which are not themselves derivative works of the Document.

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8. TRANSLATION

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If a section in the Document is Entitled "Acknowledgements", "Dedications", or "History", the requirement (section 4) to Preserve its Title (section 1) will typically require changing the actual title.

9. TERMINATION

You may not copy, modify, sublicense, or distribute the Document except as expressly provided for under this License. Any other attempt to copy, modify, sublicense or distribute the Document is void, and will automatically terminate your rights under this License. However, parties who have received copies, or rights, from you under this License will not have their licenses terminated so long as such parties remain in full compliance.

10. FUTURE REVISIONS OF THIS LICENSE

The Free Software Foundation may publish new, revised versions of the GNU Free Documentation License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. See http://www.gnu.org/copyleft/.

Each version of the License is given a distinguishing version number. If the Document specifies that a particular numbered version of this License "or any later version" applies to it, you have the option of following the terms and conditions either of that specified version or of any later version that has been published (not as a draft) by the Free Software Foundation. If the Document does not specify a version number of this License, you may choose any version ever published (not as a draft) by the Free Software Foundation.

ADDENDUM: How to use this License for your documents

Copyright (c) YEAR YOUR NAME.
   Permission is granted to copy, distribute and/or modify this document
   under the terms of the GNU Free Documentation License, Version 1.2
   or any later version published by the Free Software Foundation;
   with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
   A copy of the license is included in the section entitled “GNU
   Free Documentation License”.

If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts, replace the “ with…​Texts.” line with this:

with the Invariant Sections being LIST THEIR TITLES, with the
   Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST.

If you have Invariant Sections without Cover Texts, or some other combination of the three, merge those two alternatives to suit the situation.

If your document contains nontrivial examples of program code, we recommend releasing these examples in parallel under your choice of free software license, such as the GNU General Public License, to permit their use in free software.