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Full Discussion: iptables - allow MySql
Top Forums UNIX for Advanced & Expert Users iptables - allow MySql Post 303015681 by stomp on Tuesday 10th of April 2018 06:47:05 AM
Old 04-10-2018
Seems that the mysqld listening to all interfaces. That one checked and fine.

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Quote:
I dont get any error message - just mysql cannot connect and appears to hang.
That points to a possible firewall issue with the mysql server just dropping the packages of the mysql-connection attempt, the mysql server is being blocked completely or the mysql server is not reachable via ip(check with ping!).

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Please check if the mysql-port is open from the machine from which you are trying to connect:

Code:
nmap -p3306 -P0 ip.of.mysql.server

Check/Show your complete firewall rule set(iptables -L -v -n):

Last edited by stomp; 04-10-2018 at 07:53 AM..
 

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cvm-mysql(8)						      System Manager's Manual						      cvm-mysql(8)

NAME
cvm-mysql - MySQL module SYNOPSIS
cvm-mysql CREDENTIALS
Pass phrase DESCRIPTION
This module queries a MySQL database for the account name, compares the stored pass phrase with the given one using crypt(3). CONFIGURATION VARIABLES
CVM_MYSQL_DEFAULT_FILE The full path of the defaults file to read if the following variable is set. If not set, the file $HOME/.my.cnf will be read (the MySQL default). CVM_MYSQL_DEFAULT_GROUP If set, the module will read connection default options from the named group in the defaults file as above CVM_MYSQL_HOST The hostname or IP of the MySQL server. If not set, a connection to the local host is assumed. CVM_MYSQL_USER The MySQL login ID to connect as. If not set, the invoking user is assumed. CVM_MYSQL_PASS The password for the above user. CVM_MYSQL_DB The database name, must be set. CVM_MYSQL_PORT The port number for the TCP/IP connection (only used if the server is not local). CVM_MYSQL_POSTQ (optional) The SQL query to execute after the credentials have been validated, see cvm-sql(7). CVM_MYSQL_PWCMP (optional) The password comparison module to use. CVM_MYSQL_SOCKET The path to the socket that should be used for connections to a local server. CVM_MYSQL_QUERY (optional) The SQL query to issue to retrieve the row containing the account information from the database, see cvm-sql(7). SEE ALSO
cvm-sql(7), cvm-pgsql(8), cvm-pwfile(8), cvm-qmail(8), cvm-unix(8), cvm-vmailmgr(8), cvm-benchclient(8), cvm-checkpassword(8), cvm-test- client(8) http://untroubled.org/pwcmp/pwcmp.html http://untroubled.org/cvm/cvm.html cvm-mysql(8)
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