Manager of pid file quit without updating failed

Hi, In 64-bit Linux(Centos/Red Hat) machine when I am trying to start the My SQL service by using service mysql start command , I am getting the following error Ø Starting My SQL.Manager of pid-file quit without updating file [FAILED] If I try to stop the My SQL service I am getting this error Ø My SQL manager or server PID file could not be found!Well after mysql was updated it failed to start throwing the following error.I'm not sure why this line above didn't cause any issues with 5.1.55 and threw 5.1.56 into a frizzy...If you are not the intended recipient (or authorized to receive information for the intended recipient), you are hereby notified that any review, use, disclosure, distribution, copying, printing, or action taken in reliance on the contents of this e-mail is strictly prohibited.If you have received this communication in error, please notify us immediately by reply e-mail and destroy all copies of the original message. Description: Scenario: While setting up the mysql cluster in NDB engine , Couple of time the API node went "mysql" service not starting , It seems the below issue was repeating again and again , Error : 1 ERROR! 2017-04-11 9572 [ERROR] NDB: error (1) Configuration error: Error: Could not alloc node id at port 1186: Connection done from wrong host ip

and in fact he had, however it would be nice to understand the exact details here and how we can prevent this for the common user in the future.however I wanted to mention this in case anyone else run into this issue.I would also like to Thank Jeff @ No Baloney for his warm voice and a few quick jokes while speaking with him on the phone.$ rm /var/lock/subsys/mysql $ service mysqld restart If none of these help, and you’re getting an error like this: $ service mysqld restart ERROR! $ /etc/init/Time to restart $ /etc/init.d/mysqld restart You should a get successfull restart. $ mysql_upgrade If it says you have the latest version, still force it.$ mysql_upgrade –force It will check every database if it’s ok.Thanks Manivannan S DISCLAIMER: This email message and all attachments are confidential and may contain information that is privileged, confidential or exempt from disclosure under applicable law.If you are not the intended recipient, you are notified that any dissemination, distribution or copying of this email is strictly prohibited.[FAILED] When I try to start My SQL service from /etc/init.d/mysql start Ø ERROR 2002 (HY000): Can't connect to local My SQL server through socket '/var/lib/mysql/mysql.sock' (111) I have installed My SQL-client-5.1.52-1.glibc23.x86_64My SQL-server-5.1.52-1.glibc23.x86_64In my Linux machine.Does anyone know how to solve this issue in My SQL?This is kind of a common problem and may have several reasons.Sometimes when we simply want to restart the My SQL Server, we can get such an error: ERROR! First of all, always check if the /tmp partition is full.