Showing entries 1 to 5
Displaying posts with tag: connection (reset)

Mermaids have the same probability of fixing your permission problems, but people continue believing in the FLUSH PRIVILEGES myth.I see suggesting the usage of FLUSH PRIVILEGES every time someone writes a tutorial or a solution to a problem regarding creating a new account or providing different privileges. For example, the top post on /r/mysql as of the writing of these lines, “MySQL:The user specified as a definer does not exist (error 1449)-Solutions” has multiple guilty cases of this (Update: the user has corrected those lines after I posted this article).

It is not my intention to bash that post, but I have seen …

[Read more]
Connection Failures Between Nodes in MySQL Cluster

If you're setting up MySQL Cluster on Oracle Linux or another Linux such as Red Hat, CentOS or Fedora, you might have come across some problems getting the nodes to communicate. There are two ways you might bump into problems with network connectivity: The iptables firewall, and SELinux. These security mechanisms might prevent your various nodes—management, data, and API—from communicating with each other in various ways and with various symptoms.

Let's have a look at what you're likely to see. 

Data nodes stuck at "starting"

The first thing you might notice is that your data nodes get stuck in the "starting" state. Running show in the management client gives something like this:

[ndbd(NDB)]     2 node(s)
id=2    @  (mysql-5.6.11 ndb-7.3.2, Nodegroup: 0, Master)
id=3    @  (mysql-5.6.11 ndb-7.3.2, starting, Nodegroup: 0)

...and it never moves away from starting.

[Read more]
Remote connections without leaving the mysql shell

You probably know that mysql -h host_or_ip can connect you to a remote host.

But did you know that you can change the host you are connected to from within mysql?

The undocumented (as far as I can tell, in the MySQL manual and in the “help” on the mysql command line) CONNECT statement can help.

How To – Resolve Unable to Retrieve MSN Address Book using Pidgin

Background Knowledge

Today (2008-01-12) I loaded Pidgin and discovered that I was no longer able to connect to MSN. It appears either Microsoft is blocking the connection or a new version has been release. What the cause of the matter is I have not been able to verify with certainty at this time.

UPDATE: Pidgin v2.5.4 has been released that temporarily fixes the problem.

Error Message

“Unable to Retrieve MSN Address Book using Pidgin”. See screen shot of the error message below.


  1. Close Pidgin application.
  2. Download and install “msn-pecan“.
  3. Run Pidgin application.
  4. In Pidgin “Show Buddy List” and go to the menu “Accounts” -> “Manage Accounts”.
  5. Modify your MSN account, ensure the protocol shows “MSN”.
[Read more]
Building mod_jk

Here are the instructions for building mod_jk.

1. Download the source and untar it.

2. Ensure you have Sun Studio compiler in your PATH followed by /usr/ccs/bin. Save the following in '' in the 'native' directory :

make distclean
export PATH
./configure --with-apxs=/opt/coolstack/apache2/bin/apxs --with-java-home=/usr/java --with-prefix=$INSTALLDIR
make install

3. Go to the 'native' directory and run ./

4. Edit your httpd.conf file to include :

  LoadModule jk_module        modules/

5. Restart the apache httpd server.

Let me know if this …

[Read more]
Showing entries 1 to 5