Not start mysql (cp insatalldir to another machine)

Hello. I’m make a full backup by wiki and untar in same directory on another machine (Ubuntu 11.04 → Ubuntu 11.04)

But mysql not started

please help !

$ cd installdir
$ sudo ./rubyconsole
$ ./ctlscript.sh stop

new terminal window
$ cd /home/user/Downloads/
$ sudo tar -czvf rubystack.tar.gz /opt/rubystack-2.2-0/

on another machine
$ cd /home/user/Downloads/
$ sudo tar xzvf rubystack.tar.gz /opt/

UPDATE:

user@user-10:/opt/rubystack-2.2-0$ sudo ./rubyconsole
[sudo] password for user:
bash-4.1# ./ctlscript.sh start
110627 12:25:13 mysqld_safe Logging to ‘/opt/rubystack-2.2-0/mysql/data/mysqld.log’.
chown: invalid user: `mysql’
110627 12:25:13 mysqld_safe Starting mysqld.bin daemon with databases from /opt/rubystack-2.2-0/mysql/data
110627 12:25:13 mysqld_safe mysqld from pid file /opt/rubystack-2.2-0/mysql/data/user-10.pid ended
/opt/rubystack-2.2-0/mysql/scripts/ctl.sh : mysql could not be started
/opt/rubystack-2.2-0/memcached/scripts/ctl.sh : Memcached started
starting port 3001
starting port 3002
Syntax OK
/opt/rubystack-2.2-0/apache2/scripts/ctl.sh : httpd started at port 80
/opt/rubystack-2.2-0/subversion/scripts/ctl.sh : subversion started at port 3690
bash-4.1#

mysqld.log:
0627 12:25:13 mysqld_safe Starting mysqld.bin daemon with databases from /opt/rubystack-2.2-0/mysql/data
110627 12:25:13 [ERROR] Fatal error: Can’t change to run as user ‘mysql’ ; Please check that the user exists!

110627 12:25:13 [ERROR] Aborting

110627 12:25:13 [Note] /opt/rubystack-2.2-0/mysql/bin/mysqld.bin: Shutdown complete

110627 12:25:13 mysqld_safe mysqld from pid file /opt/rubystack-2.2-0/mysql/data/user-10.pid ended

Hi,

Does the mysql user exists in the machine? Try to create this user and try to start the database again.

Don’t know how. Please help !

it works!

I’m glad to hear that!