Adding Hosts

Prerequisites

Before discovering hosts for Oracle 12c RAC or later, ensure that the Oracle RAC cluster service is running properly.

IP addresses of the hosts where protected objects reside and usernames and passwords configured during the eReplication Agent replication have been obtained.

• The scenarios of adding hosts are described in the following Table Parameters for adding hosts.

  Table 1 The scenarios of adding hosts

  Protected Object	Description
  Oracle IBM DB2 Microsoft SQL Server SAP HANA	Add the hosts where databases reside.

Context

If you uninstall and reinstall the eReplication Agent on a host, you need to add the host again after the eReplication Agent is reinstalled.

Procedure

1. On the menu bar, select Resources.
2. On the navigation bar, select the site where the hosts are to be added.
3. Add hosts.

   Hosts that need to be managed must be added.

   1. Select Add Host.
      • Method 1: In the Resource Statistics, click Add Host.

        

      • Method 2: In the navigation tree, select Host. Then click Add Host.

        

   2. Optional: Select Apply the port, username, and password of the first row to the newly added row. The system will use the port, username, and password of the host in the first row to avoid repeated inputs.
   3. Optional: Select Enable Agentless. If Enable Agentless is not selected, an Agent host is created.
      

      In the step of customizing scripts in the protection and recovery processes, hosts with Agentless enabled do not support third-party scripts.

   4. Set parameters for hosts to be added as described in Table 2.

      

      • If only one host needs to be added, enter the authentication information of the host in the default row.
      • If multiple hosts need to be added, you can click Add to add authentication information of multiple hosts.

      Table 2 Parameters for adding hosts

      Parameter	Description	Value
      IP Address	IP address of the host.	[Value range] The value of the leftmost field ranges from 1 to 223 (excluding 127). The value of the last field ranges from 1 to 255. The values of the other fields range from 0 to 255. [Example] 192.168.10.11
      Port	Communication port of the eReplication Server and Agent.	[Value range] The value ranges from 1 to 65535. The default value is 59526. The default value is provided in the default row only. You can copy the information in the default row.
      Username	Username configured during the eReplication Agent installation.	It can be obtained from the host administrator.
      Password	Password configured during the eReplication Agent installation.	It can be obtained from the host administrator.

      

      If an added host does not need to be discovered, click Delete to delete it. The default information row cannot be deleted.

   5. Optional: If the alarms of a host need to be monitored by eReplication, click in the operation area in the row where the host resides, and set the reporting parameters as described in Table Alarm reporting parameters.
      

      Table 3 Alarm reporting parameters

      Parameter	Description	Value
      Type	Type of the SNMP protocol. SNMP v3 is used by default and cannot be changed.	The system uses SNMP v3 for communication by default.
      Retry Count	Times for resending the SNMP operations. If this number of times is exceeded, the SNMP operation will be abandoned.	[Value range] The value ranges from 0 to 5. The default value is 3.
      Timeout Duration	Time that needs to be waited after the protocol message is sent.	[Value range] The value ranges from 0 to 5. The default value is 5.
      Port	SNMP v3 alarm reporting port of the host.	[Value range] The value ranges from 1 to 65535. The default value is 161.
      Username	Username used to report alarms based on SNMP v3 when adding a host on the eReplication Server. The default username is the same as that configured during the eReplication Agent installation. After the eReplication Agent is installed, the default alarm reporting username is rdadmin.	[Value range] The username contains 1 to 64 characters.
      Environment Name	This parameter does not need to be manually configured.	-
      Environment Engine ID	This parameter does not need to be manually configured.	-
      Authentication Protocol	Protocol used for verifying messages. The parameter value can be HMACMD5, HMAC_SHA1, HMAC_SHA2(SHA256) or no protocol.	[Example] HMAC_SHA2 NOTE: The default value is HMAC_SHA2(SHA256). HMACMD5 or HMAC_SHA1 is an insecure protocol which may cause security risks. Therefore, HMAC_SHA2(SHA256) is recommended.
      Authentication Password	If the authentication protocol is used to verify messages, you need to set the authentication password. The default password is the same as that configured during the eReplication Agent installation.	-
      Data Encryption Protocol	Encryption protocol used for encapsulating data. The value can be DES or AES, or no encryption. DES: an international universal encryption algorithm. The key length is 56 bytes. AES: an advanced encryption standard. There are three types of key length: 128 bytes, 192 bytes, and 256 bytes. Different lengths provide different-level security protection.	[Example] AES NOTE: The default value is AES. DES is an insecure protocol which may cause security risks. Therefore, AES is recommended.
      Data Encryption Password	If the encryption algorithm is used for encapsulating data, you need to set the data encryption password. The default password is the same as that of the eReplication Agent.	-

   6. Click OK.

4. Optional: If the application environment is a cluster, you need to create a host group and add all the hosts in the cluster to the host group.
   1. Click Create Host Group. Table Parameters for creating host groups describes related parameters.
      

      Table 4 Parameters for creating host groups

      Parameter	Description	Value
      Name	Name of the host group.	[Value range] Contains 4 to 32 characters. Contains letters, digits, underscores (_), and hyphens (-), and cannot start with a hyphen (-). [Example] hostgroup
      Operating System iSoft	Host groups support Windows, RedHat, HP-UX, SUSE, AIX, Solaris, Oracle Linux, and iSoft.	[Example] Windows
      Cluster Type	You need to select a cluster type from the drop-down list. Host groups running different operating systems support different cluster types. If the operating system of a host group is Windows, the cluster type can only be Oracle RAC or WSFC. If the operating system of a host group is Red Hat, the cluster type can only be Oracle RAC, VCS, or RHCS. If the operating system of a host group is HP-UX, the cluster type can only be Oracle RAC or ServiceGuard. If the operating system of a host group is SUSE, the cluster type can only be Oracle RAC. If the operating system of a host group is AIX, the cluster type can only be Oracle RAC or PowerHA. If the operating system of a host group is Solaris, the cluster type can only be Oracle RAC or Sun Cluster. If the operating system of a host group is Oracle Linux, the cluster type can only be Oracle RAC. If the operating system of a host group is iSoft, the cluster type can only be Oracle RAC.	[Example] Oracle RAC

   2. In the Host area, select one or more hosts.
   3. Click OK.

Related Operations

After hosts are added, you can refresh, modify, and delete host information. For details about subsequent operations, see Table Related operations.