Michael Widenius wrote:
>
> >>>>> "Sasha" == Sasha Pachev <sasha@stripped> writes:
>
> Sasha> MagnusStenman wrote:
> >>
> >> I run a freshly installed intel RedHat 5.2
> >> with 3.22.23b-1 MySQL RPMs
> >>
> >> When trying to start the MySQL server from the init scripts
> >> it just starts and stops again:
> >>
> >> /etc/rc.d/init.d/mysql start
> >> [root@lakrits /root]# Starting mysqld daemon with databases from
> >> /var/lib/mysql
> >> mysqld daemon ended
> >>
> >> In the error log:
> >> mysqld started on Fri Jul 2 04:13:53 CEST 1999
> >> 990702 4:13:53 getpwnam: Success
> >> 990702 4:13:53 Aborting
> >>
> >> mysqld ended on Fri Jul 2 04:13:53 CEST 1999
> >>
> >> I tried to run it manually like this: (and variations thereof)
> >>
> >> mysqld --skip-locking --user=mysql --one-thread \
> >> --pid-file=/var/lib/mysql/lakrits.hkust.se.pid \
> >> --basedir=/ --datadir=/var/lib/mysql
> >>
> >> and got this output:
> >> 990702 4:04:56 getpwnam: Success
> >> 990702 4:04:56 Aborting
> >>
> >> When omitting the "--user=mysql" argument, it runs fine,
> >> but all threads run as user root.
> >>
> >> the "mysql" user exists, and has read and write permissions
> >> in /var/lib/mysql
> >>
> >> I tried with and without shadow passwords.
> >>
> >> I cannot get any further here...
> >>
> >> /magnus
> >>
>
> Sasha> I have seen the same problem. My solution, done in a hurry - did not
> Sasha> have the time to find a better way to do it:
>
> Sasha> - get rid of --user=
> Sasha> - start the daemon with su -c "/path/to/safe_mysqld& "
> <mysql_user>
>
> Sasha> Maybe Monty can shed some light on this. What happens exactly when
> Sasha> mysqld is given --user - seteuid() to that user before anything else?
>
> Hi!
>
> It calls the following code:
>
> -------
> static void set_user(const char *user)
> {
> struct passwd *ent;
>
> // don't bother if we aren't superuser
> if(geteuid())
> return;
>
> if(!(ent = getpwnam(user))) <-- fails here
> {
> sql_perror("getpwnam");
> unireg_abort(1);
> }
>
> if (setgid(ent->pw_gid) == -1)
> {
> sql_perror("setgid");
> unireg_abort(1);
> }
> if (setuid(ent->pw_uid) == -1)
> {
> sql_perror("setuid");
> unireg_abort(1);
> }
> }
>
> -----------
>
> I have now idea why getpwnam fails with 'success'.
>
> Magnus; Are you sure that you have a user named 'mysql' ?
>
> Try typing:
>
> id mysql
>
> Regards,
> Monty
>
Maybe the value of the user gets corrupted on the way.
--
Sasha Pachev
http://www.sashanet.com/ (home)
http://www.direct1.com/ (work)
