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NTP Setup   ________________________________________________________________________ Applicable Environment ________________________________________________________________________ Topic: NTP SDP: 7.0.0, 7.1.0 Target: AArch64, x86_64 ________________________________________________________________________ Question ________________________________________________________________________ Purpose: To complete a basic setup of Network Time Protocol (NTP) The Network Time Protocol (NTP) utilizes a daemon on the local network of the host to synchronize the time with the standard time servers. It then broadcasts this time with its clients. Errors Addressed: "servname not supported for ai_socktype" ________________________________________________________________________ Solution ________________________________________________________________________ Example usage - Two VMs to test NTP: Configuration/steps used for the server (192.168.186.135) and client (192.168.186.132): ========= Server Setup: ========= Found in host directory: /target/qnx7/etc/ntp.conf (in SDP installation folder) Save in target (server) directory: /tmp/ntp.conf: ----------------------------------- Step 1: [ntp.conf] ----------------------------------- Copy/paste the content below to the ntp.conf file ----- logfile /tmp/ntp.log logconfig=all # public NTP servers server 0.pool.ntp.org prefer iburst # restrict client so it cannot modify the server but can access it restrict 192.168.186.132 nomodify ----- ----------------------------------- Step 2: [services] ----------------------------------- Add /etc/services from the same host directory mentioned above (qnx710/target/qnx7/etc/services) to the server to avoid the error "servname not supported for ai_socktype" ----------------------------------- Step 3: [commands] ----------------------------------- Run these commands on server: # ntpd -g -c /tmp/ntp.conf # ntpq -pn ======== Client Setup: ======== Found in host directory: /target/qnx7/etc/ntp.conf (in SDP installation folder) Save in target (client) directory: /etc/ntp.conf: ---------------------------------- Step 1: [ntp.conf] ---------------------------------- Copy/paste the content below to the ntp.conf file ----- driftfile /etc/ntp/ntp.drift logfile /tmp/ntp.log logconfig=all # public NTP servers (connect to IP of server) server 192.168.186.135 iburst ----- ----------------------------------- Step 2: [services] ----------------------------------- Add /etc/services from the same host directory mentioned above (qnx710/target/qnx7/etc/services) to the client to avoid the error "servname not supported for ai_socktype" ----------------------------------- Step 3: [commands] ----------------------------------- Run these commands on client: # ntpd -g -c /etc/ntp.conf # ntpq -i > peers > sysinfo Reference: http://www.qnx.com/developers/docs/7.1/index.html#com.qnx.doc.neutrino.sys_arch/topic/tcpip_NTP.html http://www.qnx.com/developers/docs/7.1/#com.qnx.doc.neutrino.utilities/topic/n/ntpd.html http://www.qnx.com/developers/docs/7.1/#com.qnx.doc.neutrino.utilities/topic/n/ntpq.html ________________________________________________________________________ NOTE: This entry has been validated against the SDP version listed above. Use caution when considering this advice for any other SDP version. For supported releases, please reach out to QNX Technical Support if you have any questions/concerns. ________________________________________________________________________ Related Attachments  None Found

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