A self-organizing network method for non-central time synchronization in a cluster environment
A time synchronization and central time technology, which is applied in data exchange networks, time division multiplexing systems, and devices that provide special services in branch offices.
Active Publication Date: 2019-02-22
THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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Problems solved by technology
Once the time server fails (such as: time server equipment failure, time out of synchronization between time servers, communication link failure between time server and cluster nodes), it will lead to time out of synchronization between cluster nodes
Since the processing terminal and the cluster nodes maintain time synchronization, the out-of-synchronization of the time of the cluster nodes will lead to the out-of-synchronization of the time of the processing terminal, which in turn will lead to the out-of-synchronization of the time in the entire cluster
[0006] (2) There is a lack of automatic configuration methods for time synchronization relationships within the cluster, and the static configuration method is cumbersome and error-prone
The way of statically configuring the time synchronization relationship is cumbersome and error-prone. Once the address of the cluster node changes, the processing terminals that synchronize with it need to adjust the IP address of the time synchronization source
Method used
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[0034] Such as figure 1 and figure 2 Shown, the specific embodiment of the present invention is as follows:
[0035] Step 1, setting time server, described time server is deployed on wide area network, is used for receiving external reference time, and provides time service by network time synchronization protocol;
[0036] Step 2: Elect the cluster node with the longest online running time among the nodes of the cluster as the highest priority node to keep time synchronization with the time server, and the remaining cluster nodes and the highest priority cluster node keep time synchronization;
[0037] Step 3, the cluster node with the highest priority broadcasts the UTC time to the processing terminal.
[0038] The time server is equipped with a satellite receiving module for receiving UTC time.
[0039] The time server is equipped with an atomic clock timekeeping module for maintaining high precision of UTC time.
[0040] The time server is equipped with a network time...
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The invention discloses an acentric time synchronization self-organizing network method in a cluster environment. According to the acentric time synchronization self-organizing network method disclosed by the invention, a time synchronization relationship within the cluster and the time synchronization relationship between the cluster and a time server are established in an acentric voting mode, so that the anti-interference and robustness are relatively high; when the time server is valid, each node of the cluster maintains a unified internal time and maintains the same time as the time server; and in the case of failure of the time server, each node of the cluster can also maintain the unified internal time. Meanwhile, the nodes of the cluster adopt the multicast / broadcast mode to broadcast a standard UTC time to a processing terminal, thereby effectively reducing the maintenance cost of the static configuration time synchronization relationship.
Description
technical field [0001] The invention belongs to the technical field of time synchronization, and in particular relates to an ad hoc network method for centerless time synchronization in a cluster environment. Background technique [0002] In order to improve the reliability and scalability of application systems, computing-intensive applications are often deployed in cluster mode. The cluster includes two types of nodes: cluster nodes and processing terminals. The time synchronization between each node must be maintained to ensure a unified time reference for information processing. At the same time, each node needs to synchronize time with the time server to obtain standard astronomical time. The currently widely used cluster time synchronization technology adopts a three-layer time synchronization architecture: set the atomic clock as the time server, and synchronize with the satellite time through the satellite link; set the cluster node as the secondary time source, adop...
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IPC IPC(8): H04J3/06H04L29/08H04L12/18
CPCH04J3/0658H04L12/1859H04L67/1044
Inventor 朱莉
Owner THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP