On 2017-03-18 at 04:11:19 Josip Deanovic wrote:
> On Friday 2017-03-17 21:32:13 Erik P. Olsen wrote:
> > Hello everybody,
> >
> > I would like to express my gratitude to all you nice guys who so
> > patiently have provided many good advice. I really do appreciate your
> > effort. However, no matter have good these advice were I have not been
> > able to get bacula going on this system. I do believe that I have
> > issued all necessary commands and scripts more than once and that they
> > should work. The problem lies probably in either mariadb or the
> > database files which probably are corrupt.
> >
> > I have not given up but I will concentrate on getting mariadb correctly
> > installed and see if this approach will be profitable.
>
>
> I will try to recap the whole mysql story you might miss since
> you said that you do not have any previous database experience.
>
> - mysql default port is 3306
> - mysql can listen on the localhost (in mysql terminology that would
> mean unix socket), 127.0.0.1 or any other IP (be it ipv4 or ipv6)
> which is setup in the mysql main configuration file
> - for mysql localhost and 127.0.0.1 IS NOT THE SAME THING
> - one can setup some root password for mysql root user (very good idea)
> but for the purposes of testing the setup it is not necessary
> - if the password for the mysql root user is set one should always
> either use -p option (when connection as mysql root user to the mysql
> server) on the command line to instruct the mysql client tool that it
> needs to prompt for a mysql root password or as an alternative a
> file /root/.my.cnf should be created that looks like:
> [client]
> # use either localhost or 127.0.0.1 depending on how your mysql
> # server is being configured in the main mysql configuration file
> host=localhost
> user=root
> password="some_very_strong_password"
> - at this point no matter whether the mysql root password is set or
> not, system root user will always be able to connect to the mysql
> server using simple mysql command
> - one can use "netstat -lnp | grep 3306" to determine if the
> mysql server is listening on some IP or just on the unix socket
> - only if mysql server has been configured to listen on 127.0.0.1
> one can use the option "-h 127.0.0.1" to connect to the mysql
> server using mysql client tool.
> - mysql server contains mysql database which contains several tables
> needed for its normal operation
> - once connected to the mysql server as mysql root user, one can
> use the command "show database" to list the available databases,
> the command "use <some database>" to enter the specified database,
> the command "show tables" to list the tables in the database we
> have entered and so on
> - mysql database contains two very important tables (among others):
> user
> db
> - the SQL command "select * from mysql.user" would list the whole
> content of the "user" table in the mysql database and it can be
> used to determine if the target user exist and from what hosts
> it should be able to connect
> - pretty much the same goes for the mysql.db table
> - at this point it would be the best if the both, localhost and
> 127.0.0.1 are allowed to connect to the server and to the target
> database (in our case most probably "bacula")
> - in mysql if the table in the mysql has been changed manually using
> SQL commands, a command "flush privileges;" has to be issued in
> order for mysql to apply the changes (some mysql commands also
> require flushing privileges), alternatively a mysql server can
> be restarted
>
>
> So, when setting up the mysql database for use with mysql the
> path would be:
>
> 1. install the mysql
> 2. set up the root password and flush privileges or restart the
> mysql server (lame)
> 3. configure the mysql as you see fit, chose the port and the
> IP/socket it is going to bind/listen and restart the mysql
> server
> 4. set up the /root/.my.cnf file in accordance to the configuration
> options you have used in step 3.
> 5. make sure your firewall will not block your mysql connections
> 6. test mysql connections manually using commands:
> mysql -h localhost -u root -p
> (of course, if you have used 127.0.0.1 you will use that instead
> of localhost)
> 7. if successful in step 6 we can go to the directory containing
> files:
> create_mysql_database
> make_mysql_tables
> grant_mysql_privileges
> and as a system root user execute them in that order
> 8. if successful in step 7, set some strong password for the
> bacula user (similarly to the changing password of the mysql
> root user) and do the "flush privileges;" as mysql root user or
> restart the mysql server
> 9. test the connection manually (in this example I am using mysql
> user "bacula" and the database "bacula" while -p means that
> mysql client tool should prompt for the password):
> mysql -h localhost -u bacula -p bacula
> 10. if successful in step 9, setup the catalog database connection
> in the bacula-dir.conf like:
> dbname = "bacula"; dbuser = "bacula"; dbpassword = "some_strong_pass";
> dbaddress = "localhost"
> note that the dbaddress should reflect your mysql setup (so if it's
> configured to bind to 127.0.0.1, use 127.0.0.1, if it's something
> else, use something else
> 11. test the bacula-dir configuration using the command:
> bacula-dir -t
> 12. restart the bacula-dir and check if it's running using the command:
> ps aux | grep bacula-dir
> 13. connect to the bacula-dir using your bconsole tool
> 14. if step 13 failes, check everything, check system logs, check bacula
> logs, check mysql logs, do the connection tests one more time, debug...
>
>
> It's pretty strait forward (this is not a sarcasm).
>
> If you are using hostnames instead of IPs then you should make sure
> that
> - mysql has been setup to support that
> - that the host resolves to the IP you believe it should
>
> For the purpose of debugging it would be a good idea to turn off
> everything that could stand in the way, e.g. firewall, selinux.
>
>
Thanks a lot.
--
Erik
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