I am trying to reset my MySQL root password following the official reference here.
In step #2, I have to do the following
Locate the .pid file that contains the server's process ID. The exact
location and name of this file depend on your distribution, host name,
and configuration. Common locations are /var/lib/mysql/,
/var/run/mysqld/, and /usr/local/mysql/data/. Generally, the file name
has an extension of .pid and begins with either mysqld or your
system's host name.
So I go to /var/lib/ and find the mysql folder. I double-clicked it, I got the following pop-up window:
The folder contents could not be displayed.
You do not have the permissions necessary to view the contents of "mysql".
I am pretty sure that I am indeed the system admin. Why is it like so and how to fix it?
Start with working with the terminal/console as a root user.
Not a system expert - but it should get you somewhere:
Get into the ubuntu terminal/console
switch to the root user (sudo bash)
Then follow this one :
https://help.ubuntu.com/community/MysqlPasswordReset
Related
Starting on PHP/MySQL Development and as the title states, downloaded MySQL 8.0.15 DMG. Installed. However, when I attempt to run the terminal command:
"sudo /usr/local/mysql/support-files/mysql.server.start"
I get:
"Starting MysQl .......... "
which finally ends in:
ERROR! The server quit without updating PID file (/usr/local/mysql/data/Macbook.hsd.comcast.net.pid)
So far I have tried:
Tried to remove the "Macbook.hsd.comcast.net.pid" file located in the data directory but all i keep getting a "No Such file or directory"
To look for default "my.cnf" file to mod or to add the default values, HOWEVER I read that: "By default the OS X installation does not use a my.cnf, and My SQL just uses the default values. To set up your own my.cnf, you could just create a file straight in /etc.
An "auto.cnf" exists in the data folder, i'm not sure if MySQL uses that or would respect a "my.cnf" created in the /usr/local/sql/data/ folder.
I'm not sure of the proper location to create a "my.cnf" (see, all I want to do is set the proper value for the "pid-file" such as pid-file = /var/run/mysqld/mysqld.pid and then create the directory and give it the proper permissions. SEE UPDATE AT BOTTOM:
I'm cannot access the "data" folder in MySQL folder (which is alias of): "/usr/local/mysql-8.0.15-macos10.14-x86_64/". It keeps telling me I don't have permission. There is a little red dot
I have set checked the permissions in "/user/local/mysql/" and did a
"sudo chown -RL root:mysql /user/local/mysql"
"sudo chown -RL _mysql:mysql /usr/local/mysql/data"
In the /mysql/ directory now everything reads:
Stumped and not sure where to move on from here.
Is the fact that I can't access the data folder a result because I haven't made one/specified one? Can't seem to find an answer for getting MySQL working with HighSierra/Mojave. I can't believe that it's just dead.
I would appreciate any/all help.
UPDATE/EDIT:
Was able to add my user permissions to the "/user/local/mysql/data" folder and was finally able to access the error file ("Macbook.hsd.comcast.net.err") and a "auto.cnf".
The "auto.cnf" file is empty besides a single line: [auto] server-uuid=e7986494-331d-11e9-9691-bec9b3249da6 (not sure if I need to modify the auto.cnf and add PID entries). See error BELOW which seems to indicate otherwise.
The Error file had repeated Errors (occurred several Times):
Location of MySQL configuration file (ie: my.cnf) not specified
How can I fixed this thing?
I been trying to reinstall mysqlserver 5.5 / 5.7 and workbench countless of time. But I still not able to fix this issue.
I solved this problem. Step one: click here
Step two: and then click here to choose your path
Step three: my path is C:\ProgramData\MySQL\MySQL Server 5.7\my.ini
If you already know where your configuration file is located, but just don't know how to specify it in mySQLWorkbench, you can skip steps 1-3 and just follow step 4 in these instructions.
Step 1: Make sure which mysql is running (just in case you have multiple installations on your system) and how:
$ ps aux | grep mysql
may result in something like:
_mysql 120 0,0 3,4 5122736 565108 ?? Ss Fr01pm 61:05.93 /usr/local/mysql/bin/mysqld --user=_mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --log-error=/usr/local/mysql/data/mysqld.local.err --pid-file=/usr/local/mysql/data/mysqld.local.pid
If, in this output, you see that mysqld has been started with the --defaults-file option, that option specifies the configuration file used by msql. If so, you have found the configuration file and can skip to step 4.
If not, check if this returns the same binary location as above command:
$ which mysqld
If not, then make sure you use the full path for mysqld from the first output in the following step.
Step 2: Ask mySQL which configuration files it is using:
$ mysqld --verbose --help | grep -A 1 "Default options"
should output something like:
Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf /usr/local/mysql/etc/my.cnf ~/.my.cnf
Step 3: Check the given locations in that order. The first finding should be your mySQL configuration file.
Step 4: In mySQLWorkbench go to Database > Manage Connections, then select the connection, select tab System Profile, and enter the path and file name in Configuration File.
This should be it.
And if still nothing happens, you may have used the installer Package. If you have, then you must select the Installation Type from the drop-down to reflect that before you locate the configuration file.
Here's a screenshot that follows from the above screenshots
Also, there may not be a config file and you can create one here, then get out of the Options File, go back in and you will see all the options.
I changed my setting from Custom to MacOSx (MySQL Package) under: Database → Manage Connections → MySQL Connections → Select DB Connection → System Profile → Installation Type → (default setting) MySQL Package.
Change from custom to default setting:
Reconnect by testing connection:
For maria-db users
back up the original /etc/mysql/my.cnf
copy and rename /etc/mysql/mariadb.conf.d/50-server.cnf to /etc/mysql/my.cnf.
This would fix the problem.
Remember to revert changes after finish.
For those with Mac OS Catalina:
I did not have a my.cnf file. I went to /usr/local/mysql/
and created a directory named etc, which I did not have either.
Then, inside that directory, I created the file (my.cnf).
This is the link that helped me How to fix --secure-file-priv option error
for mysql 5.7 users and MAMP: just create /etc/my.cnf
macOS 13 and MySQL 8 current:
Open MySQL Workbench on your Mac. Connect into your localhost instance of MySQL.
Click the little wrench icon next to INSTANCE on the left pane above Startup / Shutdown.
Select macOS as System Type, macOS as Installation Type, and the rest will default into place. Copy the location it gives you for the my.cnf file.
Click Close
Now click Options File on the left. It will notice that you don't have a file and will show you default values.
Click the Apply... in the bottom right corner.
It will then ask you for a password of your current logged in user of your Mac to create and save the my.cnf file.
Now in the Finder use the keyboard combo of Command-Shift-G and copy in your location we copied early (i.e. /etc/my.cnf)
So I installed XAMPP (in Ubuntu), and it was successful,
the location of MYSQL is on, /opt/lampp/bin/mysql, and so I have to include the entire path to access mysql as seen below:
$/opt/lampp/bin/mysql -u root -p
And it can login.
But using just "mysql" isn't working; it says not found.
Can you give me an idea on how to set env't variable for mysql?
New in Ubuntu. help? :(
in your home directory there's a file called .bash_profile (use ls -la to see it because files starting with . are by default hidden
There will probably already be a line similar to this one:
PATH=$PATH:$HOME/bin
Change it to
PATH=$PATH:$HOME/bin:/opt/lampp/bin/
This is the easiest way, there are other ways to eg do this so that all users on the system will automatically get this directory in their path, for more detailed answers go to our sister site askubuntu.com
I have a large amount of text data I need to import into MySQL. I'm doing this on a MacBook and don't have enough space for it so I want to store it in an external hard drive (I'm not really concerned about speed at this point - this is just for testing).
What's the best way to do it?
Install MySQL on the external hard drive (is this possible on a Mac?)
Install MySQL on the laptop's hard drive and have the tables on the external (how?)
One simple hack is to create an symbolic link replacing your current mysql database file location pointing to the external disk. Google symbolic link.
sample usage would be after you shutdown mysql, change the old mysql db folder name to something else, and create the symbolic link using the ln command like below
ln -s [EXTERNAL DRIVE PATH] [MYSQL DB FOLDER PATH]
Then move all the previous content of the mysql db folder to the new location.
Open /etc/mysql/my.cnf and find the value of the datadir. Alternatively, you can find this out in the mysql monitor with
mysql> select ##datadir;
Stop mysql
sudo systemctl stop mysql
Copy the data from there to your external drive
sudo rsync -av /var/lib/mysql /mnt/myHDD/somedir/mysql
Modify the location of the datadir in my.cnf.
Start mysql again
sudo systemctl start mysql
Verify that everything is still fine and remove the original data dir.
This page contains a more extensive guide but all the additional issues it warns about were not relevant for me on my raspberry PI. I.e. I skipped them and it worked.
For the second option, a tablespace might do the trick:
http://dev.mysql.com/doc/refman/5.1/en/create-tablespace.html
User user658991 answer is halfway there.
After adding the soft link, you will need to add the following line to /etc/apparmor.d/usr.sbin.mysqld beneath the 2 lines to the old mysql folder.
/path/to/mysql/folder/on/the/external/ r
/path/to/mysql/folder/on/the/external/ ** rwk
Without these 2 lines, MySQL fails to start complaining of:
Can't create test file /path/to/mysql/folder/on/the/external/hostname.lower-test
Can't create test file /path/to/mysql/folder/on/the/external/hostname.lower-test
mysqld: Can't change dir to '/path/to/mysql/folder/on/the/external/' (Errcode: 13)
Restart apparmor for the changes to take effect.
sudo invoke-rc.d apparmor restart
With this, MySQL starts normally.
I'm working with a MySQL query that writes into an outfile. I run this query once every day or two and so I want to be able to remove the outfile without having to resort to su or sudo. The only way I can think of making that happen is to have the outfile written as owned by someone other than the mysql user. Is this possible?
Edit: I am not redirecting output to a file, I am using the INTO OUTFILE part of a select query to output to a file.
If it helps:
mysql --version
mysql Ver 14.12 Distrib 5.0.32, for pc-linux-gnu (x86_64) using readline 5.2
The output file is created by the mysqld process, not by your client process. Therefore the output file must be owned by the uid and gid of the mysqld process.
You can avoid having to sudo to access the file if you access it from a process under a uid or gid that can access the file. In other words, if mysqld creates files owned by uid and gid "mysql"/"mysql", then add your own account to group "mysql". Then you should be able to access the file, provided the file's permission mode includes group access.
Edit:
You are deleting a file in /tmp, with a directory permission mode of rwxrwxrwt. The sticky bit ('t') means you can remove files only if your uid is the same as the owner of the file, regardless of permissions on the file or the directory.
If you save your output file in another directory that doesn't have the sticky bit set, you should be able to remove the file normally.
Read this excerpt from the man page for sticky(8):
STICKY DIRECTORIES
A directory whose `sticky bit' is set becomes an append-only directory, or, more accurately, a directory in which the deletion of files is restricted. A file in a sticky directory may only be removed or renamed by a user if the user has write permission for the directory and the user is the owner of the file, the owner of the directory, or the super-user. This feature is usefully applied to directories such as /tmp which must be publicly writable but should deny users the license to arbitrarily delete or rename each others' files.
Not using the "SELECT...INTO OUTFILE" syntax, no.
You need to run the query (ie client) as another user, and redirect the output. For example, edit your crontab to run the following command whenever you want:
mysql db_schema -e 'SELECT col,... FROM table' > /tmp/outfile.txt
That will create /tmp/outfile.txt as the user who's crontab you've added the command to.
I just do
sudo gedit /etc/apparmor.d/usr.sbin.mysqld
and add
/var/www/codeigniter/assets/download/* w,
and
sudo service mysql restart
And that's it, I can do easily SELECT INTO OUTFILE any filename
If you have another user run the query from cron, it will create the file as that user.