NOTE:Configuring an HA pair sets the system password on the standby node to match the system password on the active node, however, that synchronization is not set until the HA configuration is complete. If the HA configuration fails, or if there is a need to access either node before the HA configuration is complete, use the serial number of each node as the password.
Steps
Verify the certificate subject name on the primary node.
Run the following command:
adminaccess certficate show
sysadmin@dd9900-ha3a# adminaccess certificate show
Subject Type Application Valid From Valid Until
-------------------------- ---- ----------- ------------------------ ------------------------
dd-ha3a.example.com host https Tue Aug 8 14:11:28 2018 Sat Aug 7 21:11:28 2022
dd-ha3a.example.com ca trusted-ca Tue Aug 8 21:04:53 2018 Mon Aug 7 21:04:53 2024
-------------------------- ---- ----------- ------------------------ ------------------------
Verify the certificate subject name on the standby node.
Run the following command:
adminaccess certficate show
sysadmin@dd9900-ha3b# adminaccess certificate show
Subject Type Application Valid From Valid Until
-------------------------- ---- ----------- ------------------------ ------------------------
dd-ha3b.example.com host https Tue Aug 8 15:11:28 2018 Sat Aug 7 22:11:28 2022
dd-ha3b.example.com ca trusted-ca Tue Aug 8 22:04:53 2018 Mon Aug 7 22:04:53 2024
-------------------------- ---- ----------- ------------------------ ------------------------
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:
Change the hostname of the standby node.
Run the
adminaccess certificate generate self-signed-cert regenerate-ca
command on the standby node to generate new certificates with the new hostname.
Proceed to Step 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.
Turn off DHCP for each port used for the HA interconnect on both nodes.
Table 1. HA interconnect ports HA interconnect ports
HA interconnect ports
ethMb, ethMc, ethMd
Run the following command:
net config
<HA-interconnect-port> dhcp off
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.
When both nodes are up, verify the following information matches on both nodes:
Hardware model
Software version
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.
Verify the HA status
Run the following command:
ha status
HA System Name: dd9900-ha3a.emc.com
HA System Status: highly available
Node Name Node ID Role HA State
-------------------------- --------- --------- --------
dd9900-ha3a-p0.example.com 0 active online
dd9900-ha3a-p1.example.com 1 standby online
-------------------------- --------- --------- --------
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.
# net config eth1a 2.2.2.1 netmask 255.255.255.0 type floating
Add the SSD enclosure to cache tier.
Run the following command:
storage add tier cache enclosure<enclosure number>
Enable the filesystem on node 0.
Run the following command:
filesys enable
Data is not available for the Topic
Please provide ratings (1-5 stars).
Please provide ratings (1-5 stars).
Please provide ratings (1-5 stars).
Please select whether the article was helpful or not.
Comments cannot contain these special characters: <>()\