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By default, WSO2 products identify the hostname of the current machine through the Java API. However, this value sometimes yields erroneous results on some environments. Therefore, users are recommended to configure the hostname. The following procedure explains how to change the hostname and management hostname of WSO2 API Manager (WSO2 API-M) as required for your production environment. 

1. Open the <API-M_HOME>/repository/conf/carbon.xml file and set the HostName and MgtHostName property as shown below.

   Localtabgroup

   Localtab active true id Format-hostname title Format Code Block language xml <HostName>{hostname}</HostName> <MgtHostName>{management-hostname}</MgtHostName> {hostname} - Hostname or IP address of the machine hosting this server. This is will become part of the End Point Reference of the services deployed on this server instance. {management-hostname} - Hostname to be used for the WSO2 API-M Management console. Localtab id example-hostname title Example Code Block language xml <HostName>am.dev.wso2.com</HostName> <MgtHostName>am.dev.wso2.com</MgtHostName>

2. Generate a key store by following the sub steps given below.

   1. Open a terminal and issue the following command to generate a key store.

      Localtabgroup
      Localtab active true id Format title Format Code Block keytool -genkey -alias <hostname> -keyalg RSA -keystore <key-store> -keysize 2048 <key-store> - This is the repository that stores the cryptographic keys and certificates. Localtab id example title Example Code Block keytool -genkey -alias am.dev.wso2.com -keyalg RSA -keystore apimkey.jks -keysize 2048

   2. Specify a preferred KeyStore password once prompted.
   3. Specify a preferred Key password once prompted.

   4. Enter the first name and last name as follows once prompted.

      Code Block
      *.am.dev.wso2.com

   5. Enter values for the other parameters as required. 
   Once this information is submitted, a key store is generated with a private key and a public certificate with am.dev.wso2.com as the CN.
3. Copy the generated self-signed key store (i.e., apimkey.jks) to the <API-M_HOME>/repository/resources/security directory.
4. Export the public certificate from the keystore and import that certificate to the  client­-truststore.jks  file following the steps given below.
1. Navigate to the <API-M_HOME>/repository/resources/security directory.

2. Issue the following command to export the public certificate from the primary key store

   Code Block
   keytool -export -alias am.dev.wso2.com -file am.dev.wso2.com -keystore apimkey.jks -storepass <keystore_password_given_above>

3. Issue the following command to import the certificate to the client­-truststore.jks file.

   Code Block
   keytool -import -alias am.dev.wso2.com -file am.dev.wso2.com -keystore client-truststore.jks -storepass wso2carbon

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