DO
ERROR! MySQL is not running, but lock file (/var/lock/subsys/mysql) exists
tail /var/lib/mysql/web2.lan.err
/lib64/libc.so.6(abort+0x148)[0x7f173c160cc8]
/usr/sbin/mysqld[0x98329b]
/usr/sbin/mysqld[0x983e85]
/usr/sbin/mysqld[0x98574e]
/usr/sbin/mysqld[0x977295]
/lib64/libpthread.so.0(+0x7df5)[0x7f173da21df5]
/lib64/libc.so.6(clone+0x6d)[0x7f173c2201ad]
The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
information that should help you find out what is causing the crash.
200914 15:34:32 mysqld_safe mysqld from pid file /var/lib/mysql/web2.lan.pid ended