August 2018
Beginner
462 pages
12h 36m
English
Content preview from Learning OpenStack Networking - Third Edition
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Installing and configuring Network Time Protocol
A time synchronization program such as Network Time Protocol (NTP) is a requirement, as OpenStack services depend on consistent and synchronized time between hosts.
For Nova Compute, having synchronized time helps to avoid problems when scheduling VM launches on compute nodes. Other services can experience similar issues when the time is not synchronized.
To install chrony, an NTP implementation, issue the following commands on all nodes in the environment:
# apt install chrony
On the controller node, add the following line to the /etc/chrony/chrony.conf file to allow other hosts in the environment to synchronize their time against the controller:
allow 10.10.0.0/24
On the other nodes, comment ...
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