LINUX NTPDATE OPERATION NOT PERMITTED NO SERVER SUITABLE FOR SYNCHRONIZATION FOUND
We have several Linux servers which communicate with each other. Date and time synchronization is important on those servers. I tried to use ntpdate to update the date and time from an NTP server, but have encountered an error.
The ntpdate update error is “Operation not permitted”. Aside from that another error showed “No server suitable for synchronization found”. I was puzzled because PING command could reach the NTP server, without any problem.
ntpdate Operation not permitted error
A closer look revealed that port 123 which is used by ntpdate is being blocked. Opening port 123 within the IP tables solved the “Operation not permitted” error and “no server suitable for synchronization found” error. This kind of solution worked well, but I would like to hear other solution to a similar problem in Linux servers.
from : www.techxplore.net
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