Symptoms

1) You are trying to install, update, uninstall, register or unregister Agent for Mac.

2) Agent registration on Management Server fails with the error message:

Could not resolve host: localhost; nodename nor servname provided, or not known

Example of full error log: click to expand

Error 0x2470001: HTTP transfer error
| line: 0xcbd08862963188d2
| file: /private/bs_hudson/workspace/ABA12.5U1/212/product/enterprise/common/http/curl_transport.cpp:285
| function: PerformRequest
| requestType: POST | uri: http://localhost/api/mms/registration
| port: 0xa8e2
| curlResult: 0x6
| $module: register_agent_macia64_10330 |

| error 0x2260006: Could not resolve host: localhost; nodename nor servname provided, or not known
| line: 0xcbd08862963188d1
| file: /private/bs_hudson/workspace/ABA12.5U1/212/product/enterprise/common/http/curl_transport.cpp:284
| function: PerformRequest | $module: register_agent_macia64_10330

 

3) If you run ping localhost command in Terminal, you receive the following message:

ping: cannot resolve localhost: Unknown host

Cause

There is an issue with network configuration of the Mac with Agent: string for localhost resolution is missing in the hosts file. As a result, register agent tool fails to resolve localhost during registration.

Solution

1. Open Terminal

2. You need to update the /etc/hosts file. Run the following command:

sudo nano /etc/hosts/

Specify admin password, if prompted.

3. Add the following line in the hosts file:

 127.0.0.1 localhost 

4. Press Ctrl+O to save changes to the file. Press Ctrl+X to exit the editor.

5. Reattempt the installation/registration.