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3. Complete one of the following options:
● If the values in the Subject column on both nodes are different, continue to Step 4.
● If the values in the Subject column on both nodes are the same:
a. Change the hostname of the standby node.
b. Run the adminaccess certificate generate self-signed-cert regenerate-ca command on the
standby node to generate new certificates with the new hostname.
c. Proceed to Step 4.
4. Set the system time on both nodes. The HA configuration will fail if the time on the two nodes is more than 10 seconds
apart.
Run the following command: system set date MMDDhhmm [[CC] YY]
NOTE:
After HA configuration is complete, point both nodes to an NTP or Active Directory time server.
5. Turn off DHCP for each port used for the HA interconnect on both nodes.
Run the following command: net config <HA-interconnect-port> dhcp off
6. On the primary node, create the HA pairing.
NOTE:
● Specify the hostname or the IP address of the standby node.
● The ha create command will fail if one node is configured to use DHCP and the other node is configured to use
static IP addresses. Both nodes must use the same method to configure IP addresses.
Run the following command: ha create peer {<ipaddr> | <hostname>} [ha-name <ha-system-name>]
NOTE:
If no value is specified for the optional ha-name parameter, the ha create command promotes the primary
node hostname to be the HA system name.
ha create peer mysystem-p1.emc.com
This command:
● Reboots both nodes, and completes the HA pairing when the nodes come back online.
● Assigns node 0 the local hostname <HA-system-name>-p0.
● Assigns node 1 the local hostname <HA-system-name>-p1.
7. When both nodes are up, verify the following information matches on both nodes:
● Hardware model
● Software version
8. Check the system for alerts.
Run the following command: alerts show current
If the system displays System is misconfigured, the SSDs were not removed from the front of the primary node. Run
the enclosure show misconfiguration command to get more details.
9. Verify the HA status
Run the following command: ha status
HA System Name: dd-ha3a.emc.com
HA System Status: highly available
Node Name
-------------------------- --------- --------- --------
dd-ha3a-p0.example.com 0
dd-ha3a-p1.example.com 1
-------------------------- --------- --------- --------
10. On node 0, convert all data IP addresses to floating IP addresses.
Run the following command for each IP address that needs to be converted to a floating IP address: net config
<interface-name> <IP address> netmask <netmask> type floating
NOTE:
The net config command with the float option is the only way to configure a floating IP address. There is no
method available in DD System Manager to configure a floating IP address.
----
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Node ID
Role
active
online
standby
online
------------------------
HA State
Configure System for Use
85
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