Cluster Network Connectivity Verification Tool — NetDoctor

1、 Background

Komsos is able to quickly deploy multi cluster networks, and the most fundamental consideration for multi cluster networks is whether nodes are connected. In order to efficiently check the connectivity of multi cluster networks, NetDoctor emerged as Kosmos’ network connectivity verification tool.

2、 Function Introduction

NetDoctor can detect the connectivity of container networks between all nodes in a cluster at once. In a single cluster network scenario, a connectivity check is performed between all nodes in the cluster; In a cross cluster scenario, all nodes in a cluster will perform a connectivity check with all nodes in another cluster;

1. Supports multiple protocols: Currently supports ICMP and TCP protocols, with UDP protocol being adapted.
2. Support multi-threaded concurrent detection: By default, three coroutines are performed simultaneously, which can greatly improve detection efficiency and shorten detection time.
3. Visual interface: progress bar, detailed detection report, including successful and abnormal nodes.

Picture 1

1. Abnormal node retesting: supports testing abnormal nodes separately, only doing critical tasks, greatly reducing…