Question about mysql for linux

[owenbrown]

I noticed that mysql has the pid 1138
# netstat -lntp | grep :3306
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 1138/mysqld

But the file /var/lib/mysql/server102.mhyhost.pid says the pid is 1197
root@server102 [/var/lib/mysql]# cat /var/lib/mysql/server102.mhyhost.pid
1197

Why is there this discrepency?

Also I noticed that mysql.sock has permissions...
srwxrwxrwx
I know this is not
chmod 7777 mysql.sock
chmod +t mysql.sock
or
chmod +s mysql.sock
How do you get those permissions and what does it mean?

 

[tshot]

does netstat tell u pid aslo. i am using linux 7.2 annd netstat does not have 'l' or 'p' option (thers is capital L for telling netlingk kernel patarmeter - whatever it means).

otherwise mysqld.pid contains thye pid

the 's' ins ls -l is indicating semaphore and is not set by nay permission
- if the entry is ordinary file
d - dir
l - symbolic link
p - named pipe
m - entryn is shared data





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