Discussion on the problem of operation not permitted caused by UDP sending large number of requests under Linux

I. Background of the problem
At present, the company is prepared to micro-service architecture model, in contrast to a large number of API gateways, finally selected Kong as our API Gateway, after a lot of research, ah yuck, after stepping on the pit, finally ran up, is simply a celebration, sprinkle flowers congratulations.

But in flattered performance test, found 1000 concurrent a total of 10,000 requests, in the execution to the second time, will always be stuck, so, but also a variety of log, found to be UDP error, error message: Operation not permitted, Look at me, it's like this.

Looks like I'm going to have to find a Google helper.

Second, the cause of the problem

The main problem is to send a large number of UDP requests to the same port under Linux, causing the connection tracking table to be full before the error is reported.

Third, the solution

1. Turn off the firewall (I am currently resolving it by shutting down the firewall)

2, theoretically should be able to set Notrack to solve the problem (not to find information to achieve)

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Source: http://www.cnblogs.com/yizitrd/>

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Discussion on the problem of operation not permitted caused by UDP sending large number of requests under Linux