Hi,
I've just tried to upgrade MySQL to version 3.23.53 (binary version from
www.mysql.com) and found some strange things. I previously used 3.23.47
and when I first tried to start the new version I got this error message:
Fatal error: Can't change to run as user 'mysql' ; Please check that the user exists!
The mysql user was fine and it worked with the 3.23.47, so I searched in
the newsgroups and mailing lists archives for the same error message to
see if someone had a similar problem, but couldn't found anything.
I straced mysqld and found this:
.... (many lines removed)
read(4, "#\n# /etc/nsswitch.conf\n#\n# An ex"..., 4096) = 1108
read(4, "", 4096) = 0
close(4) = 0
munmap(0x20366000, 4096) = 0
open("/home/serg/binaries/Glibc/etc/ld.so.cache", O_RDONLY) = -1 ENOENT (No such file
or directory)
open("/home/serg/binaries/Glibc/lib/libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No
such file or directory)
stat64(0x5fffec94, 0x5fffed0c) = -1 ENOENT (No such file or directory)
write(2, "Fatal error: Can\'t change to run"..., 87Fatal error: Can't change to run as
user 'mysql' ; Please check that the user exists!) = 87
time(NULL) = 1034683888
write(2, "021015 14:11:28 ", 17021015 14:11:28 ) = 17
write(2, "Aborting\n", 9Aborting) = 9
write(2, "\n", 1) = 1
unlink("/var/mysql/_____.pid") = -1 ENOENT (No such file or directory)
time(NULL) = 1034683888
write(2, "021015 14:11:28 ", 17021015 14:11:28 ) = 17
write(2, "./mysqld: Shutdown Complete\n", 28./mysqld: Shutdown Complete) = 28
write(2, "\n", 1) = 1
_exit(1)
I made the /home/serg/binaries/Glibc path on my machine and linked etc and
lib in that path to /etc and /lib and as a result, mysqld started
normally.
As far as I know, the statically compiled glibc (that you guys at MySQL
are using when making binary distributions) should be compiled with
--enable-static-nss option. It seems to me that the strace output above
shows that the mysqld binary is trying to dynamically load nss_compat?
Regards,
--
Predrag Malicevic
BLIC.NET ISP
+387-51-218-101
http://www.blic.net/
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