Problem mit mysql_connect

crunch

Mitglied
PHP:
$con = mysql_connect('localhost', 'testuser', 'pw');
if (!$con)
 {
 die('Could not connect: ' . mysql_error());
 }

Ich habe unter Linux einen Apache und Mysql installiert. Der Apache läuft (Ich kann normale html und php-Seiten aufrufen. Mysql funktioniert auch. Ich kann über die Konsole zugreifen und SQL Statements ausführen.

mysql> select user, password FROM user
-> ;
+----------+-------------------------------------------+
| user | password |
+----------+-------------------------------------------+
| root | *3042DC7CD0B3881E7DA926E5D2652B3140608ADF |
| root | *3042DC7CD0B3881E7DA926E5D2652B3140608ADF |
| root | *3042DC7CD0B3881E7DA926E5D2652B3140608ADF |
| | |
| | |
| testuser | *D821809F681A40A6E379B50D0463EFAE20BDD122 |
+----------+-------------------------------------------+
6 rows in set (0.02 sec)

mysql>

Ich in den database 'mysql' unter 'user' einen neuen eintrag hinzugefügt:

testuser pw

Warum bekomme ich folgende Fehlermeldung, wenn ich versuche zu connecten?

Could not connect: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

VIELE DANK !!
 
Zuletzt bearbeitet:
Überprüfe mal, ob die mysql.sock dort an dieser stelle existiert.

Wenn die Datei dort nich existent ist, müsstest du mal deine mysql config (my.cnf) anpassen.

Auf meinen System mit funktionierenden MySQL verweist die config zu einer mysqld.sock im Ordner /var/run/mysqld/ .
 
Hallo,

ich hab immer noch das gleiche Problem und mich mittlerweile durch unzählige Threads gekämpft.

Also so sieht es im Moment aus:

Code:
dan@Dan:~> mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 14
Server version: 5.1.34-log SUSE MySQL RPM

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

Code:
dan@Dan:/usr/sbin> sudo /etc/rc.d/mysql start
root's password:
Starting service MySQL                                               done
dan@Dan:/usr/sbin>

Ich bekomme immer noch diese Fehlermeldung, wenn ich mein php-script aufrufe:

Code:
$con = mysql_connect('localhost', 'testuser', 'testpw');
if (!$con)
 {
 die('Could not connect: ' . mysql_error());
 }

gleiche meldung bei 'localhost', 'root', 'rootpw'

Code:
Could not connect: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)


Code:
dan@Dan:~> whereis mysql.sock
mysql: /usr/bin/mysql /usr/lib/mysql /usr/bin/X11/mysql /usr/share/mysql /usr/share/man/man1/mysql.1.gz
dan@Dan:~> whereis mysqld.sock
mysqld: /usr/sbin/mysqld /usr/share/man/man8/mysqld.8.gz
dan@Dan:~>

Code:
dan@Dan:~> ls /var/lib/mysql/
ibdata1           mysql-bin.000003  mysql-bin.000009  mysqld.log
ib_logfile0       mysql-bin.000004  mysql-bin.000010  mysqld.log-20090511.gz
ib_logfile1       mysql-bin.000005  mysql-bin.000011  mysql_upgrade_info
mysql             mysql-bin.000006  mysql-bin.000012  test
mysql-bin.000001  mysql-bin.000007  mysql-bin.000013
mysql-bin.000002  mysql-bin.000008  mysql-bin.index
dan@Dan:~>

Code:
dan@Dan:~> whereis my.cnf
my: /etc/my.cnf
dan@Dan:~> cat /etc/my.cnf
cat: /etc/my.cnf: Keine Berechtigung
dan@Dan:~> sudo cat /etc/my.cnf
root's password:
# Example MySQL config file for medium systems.
#
# This is for a system with little memory (32M - 64M) where MySQL plays
# an important part, or systems up to 128M where MySQL is used together with
# other programs (such as a web server)
#
# You can copy this file to
# /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options (in this
# installation this directory is /var/lib/mysql) or
# ~/.my.cnf to set user-specific options.
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.

# The following options will be passed to all MySQL clients
[client]
#password	= your_password
port		= 3306
socket		= /var/run/mysql/mysql.sock

# Here follows entries for some specific programs

# The MySQL server
port		= 3306
socket		= /var/run/mysql/mysql.sock
# Change following line if you want to store your database elsewhere
datadir	= /var/lib/mysql
skip-locking
key_buffer = 16M
max_allowed_packet = 1M
table_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M

# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (via the "enable-named-pipe" option) will render mysqld useless!
# 
#skip-networking

# Disable Federated by default
# skip-federated

# Replication Master Server (default)
# binary logging is required for replication
log-bin=mysql-bin

# binary logging format - mixed recommended
binlog_format=mixed

# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id	= 1

# Replication Slave (comment out master section to use this)
#
# To configure this host as a replication slave, you can choose between
# two methods :
#
# 1) Use the CHANGE MASTER TO command (fully described in our manual) -
#    the syntax is:
#
#    CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
#    MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
#
#    where you replace <host>, <user>, <password> by quoted strings and
#    <port> by the master's port number (3306 by default).
#
#    Example:
#
#    CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
#    MASTER_USER='joe', MASTER_PASSWORD='secret';
#
# OR
#
# 2) Set the variables below. However, in case you choose this method, then
#    start replication for the first time (even unsuccessfully, for example
#    if you mistyped the password in master-password and the slave fails to
#    connect), the slave will create a master.info file, and any later
#    change in this file to the variables' values below will be ignored and
#    overridden by the content of the master.info file, unless you shutdown
#    the slave server, delete master.info and restart the slaver server.
#    For that reason, you may want to leave the lines below untouched
#    (commented) and instead use CHANGE MASTER TO (see above)
#
# required unique id between 2 and 2^32 - 1
# (and different from the master)
# defaults to 2 if master-host is set
# but will not function as a slave if omitted
#server-id       = 2
#
# The replication master for this slave - required
#master-host     =   <hostname>
#
# The username the slave will use for authentication when connecting
# to the master - required
#master-user     =   <username>
#
# The password the slave will authenticate with when connecting to
# the master - required
#master-password =   <password>
#
# The port the master is listening on.
# optional - defaults to 3306
#master-port     =  <port>
#
# binary logging - not required for slaves, but recommended
#log-bin=mysql-bin

# Point the following paths to different dedicated disks
#tmpdir		= /tmp/		
#log-update 	= /path-to-dedicated-directory/hostname

# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /var/lib/mysql/
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = /var/lib/mysql/
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
#innodb_buffer_pool_size = 16M
#innodb_additional_mem_pool_size = 2M
# Set .._log_file_size to 25 % of buffer pool size
#innodb_log_file_size = 5M
#innodb_log_buffer_size = 8M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50

# The safe_mysqld script
[safe_mysqld]
log-error=/var/log/mysqld.log
datadir	= /var/lib/mysql
socket		= /var/run/mysql/mysql.sock

[mysqldump]
socket		= /var/run/mysql/mysql.sock
quick
max_allowed_packet = 16M

no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates

[isamchk]
key_buffer = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[myisamchk]
key_buffer = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout

[mysqld_multi]
mysqld     = /usr/bin/mysqld_safe
mysqladmin = /usr/bin/mysqladmin
log        = /var/log/mysqld_multi.log
# user       = multi_admin
# password   = secret

# If you want to use mysqld_multi uncomment 1 or more mysqld sections
# below or add your own ones.

# WARNING
# --------
# If you uncomment mysqld1 than make absolutely sure, that database mysql,
# configured above, is not started.  This may result in corrupted data!
# [mysqld1]
# port       = 3306
# datadir    = /var/lib/mysql
# pid-file   = /var/lib/mysql/mysqld.pid
# socket     = /var/lib/mysql/mysql.sock
# user       = mysql

# [mysqld2]
# port       = 3307
# datadir    = /var/lib/mysql-databases/mysqld2
# pid-file   = /var/lib/mysql-databases/mysqld2/mysql.pid
# socket     = /var/lib/mysql-databases/mysqld2/mysql.sock
# user       = mysql

# [mysqld3]
# port       = 3308
# datadir    = /var/lib/mysql-databases/mysqld3
# pid-file   = /var/lib/mysql-databases/mysqld3/mysql.pid
# socket     = /var/lib/mysql-databases/mysqld3/mysql.sock
# user       = mysql

# [mysqld6]
# port       = 3309
# datadir    = /var/lib/mysql-databases/mysqld6
# pid-file   = /var/lib/mysql-databases/mysqld6/mysql.pid
# socket     = /var/lib/mysql-databases/mysqld6/mysql.sock
# user       = mysql

Code:
dan@Dan:~> ls /var/run/mysql
mysqld.pid  mysql.sock

Was muss ich jetzt genau ändern in der my.cnf? Oder ist es doch ein anderes Problem.

VIELEN DANK
 
Hallo,

in deiner Mysql.cnf steht überall als Socket
socket = /var/run/mysql/mysql.sock

Geh mal in deine php.ini und schau, ob dort in der entsprechenden Abteilung der richtige Socket eingegeben ist. Anscheinend versucht PHP über den Socket '/var/lib/mysql/mysql.sock' zu connecten, welcher allerdings nicht existiert.

Gruß
BK
 
dan@Dan:/usr/bin> whereis php.ini
php: /usr/bin/php /usr/bin/X11/php /usr/share/man/man1/php.1.gz

dan@Dan:/usr/bin> cat php.ini
cat: php.ini: Datei oder Verzeichnis nicht gefunden
dan@Dan:/usr/bin> cd X11
dan@Dan:/usr/bin/X11> cat php.ini
cat: php.ini: Datei oder Verzeichnis nicht gefunden

Ich find die php.ini nur in archiven. Ist bei der installation von php was schiefgelaufen?

Code:
<?php

echo "test";

?>

funktioniert allerdings.

**total verwirrt** :)
 
Zuletzt bearbeitet:
1. Schau mal nicht nur in /usr/bin/ sondern in /usr/bin/php/ .
2. Dateien Suchen geht mit find ein bischen komfortabler (um z.B. die php.ini zufinden find / -name php.ini)
 
ich hab jetzt 2 gefunden:

Dan:/ # find / -name php.ini
/etc/php5/apache2/php.ini
/etc/php5/cli/php.ini

Ich hab beide an dieser Stelle editiert:

; Default socket name for local MySQL connects. If empty, uses the built-in
; MySQL defaults.
mysql.default_socket = /var/run/mysql/mysql.sock

vorher stand dort einfach

; Default socket name for local MySQL connects. If empty, uses the built-in
; MySQL defaults.
mysql.default_socket =

muss ich jetzt irgendwie neustarten oder so?

wenn ich mir phpinfo() ausgeben lasse, steht dort immer noch:

MySQL Support - enabled
Active Persistent Links - 0
Active Links - 0
Client API version - 5.0.67
MYSQL_MODULE_TYPE external
MYSQL_SOCKET /var/lib/mysql/mysql.sock
MYSQL_INCLUDE -I/usr/include/mysql
MYSQL_LIBS -L/usr/lib -lmysqlclient
 
Ja du musst noch den Apache neustarten. Dann wird erst die ini neu eingelesen.
Code:
/etc/init.d/apache2 restart
 
Zurück