ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2) about freebsd-nextcloud-setup-hardened

[ChaosBlades]

That isn't fixing the issue for me it is only slightly changing the error message.

I destroyed my old jail and created a fresh one. After editing the socket parameter on my.cnf here is the output.

 root@tst:~ # /usr/local/bin/mysqld_safe --datadir='/var/db/mysql' &
 [1] 95814
 root@tst:~ # 200625 17:54:17 mysqld_safe Logging to '/var/db/mysql/tst.err'.
 200625 17:54:17 mysqld_safe Starting mysqld daemon with databases from /var/db/mysql
 
 [1]    Done                          /usr/local/bin/mysqld_safe --datadir=/var/db/mysql
 root@tst:~ # mysql_secure_installation
 
 NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB
       SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!
 
 In order to log into MariaDB to secure it, we'll need the current
 password for the root user. If you've just installed MariaDB, and
 haven't set the root password yet, you should just press enter here.
 
 Enter current password for root (enter for none):
 ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (61)
 Enter current password for root (enter for none):

As you can see the only thing that has changed is the number at the end of the error changing from a 2 to a 61. I have tried several times and I get the same thing every time.

Here is my my.cnf to show I have edited it correctly.

 #
 # This group is read both by the client and the server
 # use it for options that affect everything, see
 # https://mariadb.com/kb/en/configuring-mariadb-with-option-files/#option-groups
 #
 [client-server]
 port    = 3306
 socket  = /tmp/mysql.sock
 
 #
 # include *.cnf from the config directory
 #
 !includedir /usr/local/etc/mysql/conf.d/

[samuel-emrys]

Is this a brand new installation, or did you mount a non-empty directory into /var/db/mysql?

[ChaosBlades]

Not sure if you saw my post on the forum yet. More information there.
https://www.ixsystems.com/community/threads/how-to-manually-install-nextcloud-on-freenas-in-an-iocage-jail-with-hardened-security.72016/page-7

To answer your question, this is a fresh jail. It is an old FreeNAS install (the latest version though) but that shouldn't affect a jail. The error is reproducible by destroying the old jail and creating a new one and re-entering the commands. I did just try to rm -r the /var/db/mysql directory then start mysql again, run the installation command again, and I still get the same error.

[samuel-emrys]

I've been able to replicate your issue. This is interesting; this must have just popped up in the past few days because I tested almost this exact configuration a number of times without issue. This was normally caused by having a non-empty /var/db/mysql/ directory. Regardless, I have a quick fix for you. To get the server started, there are a couple of things to do:

1. Modify the 'socket' parameter in /usr/local/etc/mysql/my.cnf, and change it from /var/run/mysql/mysql.sock to /tmp/mysql.sock. This isn't strictly necessary if you change in remaining references in the guide to /var/run/mysql/mysql.sock
2. Run /usr/local/bin/mysqld_safe --datadir='/var/db/mysql' &. This should get the server started, from which point you should be able to execute mysql_secure_installation and get everything configured. From here on, service mysql-server start, stop, and status should be enough to manage the mysql service.

Hopefully this works for you. It did for me.

Edit: It is necessary to change the path in (1) to /tmp/mysql.sock. This is the path that mysql_secure_installation expects

[ChaosBlades]

I got it working. I didn't need /usr/local/bin/mysqld_safe --datadir='/var/db/mysql' &. After editing the my.cnf I just needed to service mysql-server start, then mysql_secure_installation, and it works.

Edit: Looks like the guide is already wording things correctly.

[gdh123]

still having the issue. fresh jail 11.3

did
Modify the 'socket' parameter in /usr/local/etc/mysql/my.cnf, and change it from /var/run/mysql/mysql.sock to /tmp/mysql.sock

restarted mysql

-> not working, still error:

Enter current password for root (enter for none): ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysql/mysql.sock' (2) Enter current password for root (enter for none):

according to the destination in error msq it seems the path did not get respected.

verified socket in my.cnf and it is pointing to /tmp/..

any idea?

solved by:
$ service mysql-server start $ mysql_secure_installation --socket=/tmp/mysql.sock