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Displaying posts with tag: container (reset)
Interesting happenstance when installing Ansible dependencies in a MySQL Docker container

I’ve been posting quite a bit about Docker as I’ve been working with it a lot as of late. I thought I would share something interesting I discovered a couple weeks ago while working on setting up a Docker container-based lab environment for training purposes here at Pythian, specifically when attempting to install the MySQL-python package inside the container.

I know what you’re thinking: why is he trying to install a package in a Docker container? Doesn’t that go against the “Docker run and forget about it” philosophy? Sure, but in this case, I’m looking to add orchestration via ansible, which I don’t think is completely out of the question in order to coordinate your Docker containers for something like replication. This requires using the …

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Backing up your MySQL instance physically with Docker

In a previous post I had mentioned that I was doing a bit of digging into Docker in order to get a better grasp of the technology. Part of that was exploring common administrative tasks. I would venture to say that backups are probably among the most important tasks we take on with database administration, so it’s important to know how to do this for Docker MySQL instances.

There is a fair bit of documentation on how to handle this logically (mysqldump / mydumper) as this is a simple task to perform as long as you can connect to the database instance, so I wanted to approach physical backups using the very common xtrabackup tool. Additionally, we’re trying to think with containers here, so I wanted to make sure that not only would I be taking a backup of the Docker container MySQL instance, but I would do it with another Docker container running …

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Configuring MySQL in a Docker Container

In recent weeks I’ve been focusing on Docker in order to get a much better understanding of the containerized world that is materializing in front of us. Containers aren’t just for stateless applications anymore and we’re seeing more cases where MySQL and other databases are being launched in a containerized fashion, so it’s important to know how to configure your MySQL container!

In docker hub, you will see an option for this by doing a volume mount from the docker host to the container on /etc/mysql/conf.d. But the problem is that the container image you’re using may not have an !includedir referencing the conf.d directory, much like the latest version of mysql community, as you will see below.

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Complete Megalist: 25 Helpful Tools For Back-End Developers

 

The website or mobile app is the storefront for participating in the modern digital era. It’s your portal for inviting users to come and survey your products and services. Much attention focuses on front-end development; this is where the HMTL5, CSS, and JavaScript are coded to develop the landing page that everyone sees when they visit your site.

 

But the real magic happens on the backend. This is the ecosystem that really powers your website. One writer has articulated this point very nicely as follows:

 

The technology and programming that “power” a site—what your end user doesn’t see but what makes the site run—is called the back end. Consisting of the server, the database, and the server-side applications, it’s the behind-the-scenes functionality—the brain of a site. …

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Docker MySQL Replication 101

In this blog post, we’ll discuss some of the basics regarding Docker MySQL replication. Docker has gained widespread popularity in recent years as a lightweight alternative to virtualization. It is ideal for building virtual development and testing environments. The solution is flexible and seamlessly integrates with popular CI tools.

 

This post walks through the setup of MySQL replication with Docker using Percona Server 5.6 images. To keep things simple we’ll configure a pair of instances and override only the most important variables for replication. You can add whatever other variables you want to override in the configuration files for each instance.

Note: the configuration described here is suitable for development or testing. We’ve also used the …

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Installing MySQL in Solaris 10 zones / containers

Now that installing MySQL in Solaris zones is even officially supported by the MySQL support group (see http://www.mysql.com/about/legal/supportpolicies/policies-06.html#q03), the question is: What is the right way of installing MySQL in a zone. Of course this depends on what you want to achieve. The following description is based on Solaris 10. On Opensolaris this is different (somewhat easier, as there are no more sparse root zones.)
If you run a local zone as a whole root zone, you can easily install MySQL from tarball or the package installer.
If you run a local zone as a sparse root zone, there are different options:
First you cannot use the package installer, as this procedure will copy binaries to /usr/bin. But /usr/bin is inherited from the global zone and write protected. You have to use the tarball installation. …

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Cloning zones

THIS BLOG POST GIVES WRONG ADVICE. DON'T DO THIS!

As the zones use ZFS as root filesystem it's easy to do a zfs snapshot/clone to reproduce a zone. The different zones have only one difference: They differ in /etc/nodename, they have different rootpaths and they have different IP addresses.I wrote a script to read from global's /etc/hosts the ip address. Zonerootpath is /zones/zonename and /etc/nodename must contain as well. The name of the zone is always identical to the hostname of the zone. That rule is not from OpenSolaris but from me.  ;-)
Here is my script: Beware: I hate to do a lot of checking. This is not for general use...
#!/bin/bash
echo "Creating zone $1 from zone TEMPLATE"
echo check if $1 does not already exist...
zoneadm list -cv | grep $1 && exit -1

echo -n "Retrieving TEMPLATE's IP: "
TEMPLATE_IP=$(grep TEMPLATE /etc/hosts | nawk '{print $1}') …

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Creating a datacenter in one Solaris machine

There is a big event coming: Cebit!And with that I took the task to implement a demo for MySQL Enterprise Monitor to show at the Sun booth. So I need a machine for the enterprise monitor and some machines to run MySQL databases. After all I need something to monitor. So the setup will be an Ultra 24 desktop machine installed with OpenSolaris 2008.11 . For every machine I will install a zone to run a separate database and one zone to run the enterprise monitor.
So here is my first round of experiences: Installing a template container on OpenSolaris and cloning …

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Showing entries 1 to 8