If you find the below given message while viewing mysql process list,

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| 3436942 | unauthenticated user | xxx.xxx.x.xx:49607 | | Connect | | login |
|
| 3436943 | unauthenticated user | xxx.xxx.x.xx:49608 | | Connect | | login |
|
| 3436944 | unauthenticated user |xxx.xxx.x.xx:49609 | | Connect | | login |
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The Solution is :

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Add the line skip-name-resolve to my.cnf and restart mysql
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