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10 Newer Entries Showing entries 31 to 40 of 1147 10 Older Entries

Displaying posts with tag: Linux (reset)

Ubuntu 14.04 LTS first impressions
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The Trusty Tahr is out with support for 5 years. Here are the first thoughts about it…

Stupid Browser comes up when searching “Appearance”
  • Unity feels more responsive than ever, especially the Alt+Tab.
  • New Desktop environments these days (also read as Cinnamon, GNOME Shell) take up a lot of RAM, I wanted to test 14.04’s unity, after few hours usage it too scooped up 320 MB worth of RAM… I expected better
  • One thing that definitely annoyed me a lot – Everytime I pressed “Alt + D” (Firefox’s shortcut for address
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Amazon EC2 Linux AMIs
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If you use Amazon Elastic Compute Cloud (EC2), you are always given choices of AMIs (by default; there are plenty of other AMIs available for your base-os): Amazon Linux AMI, Red Hat Enterprise Linux, SUSE Enterprise Server and Ubuntu. In terms of cost, the Amazon Linux AMI is the cheapest, followed by SUSE then RHEL. 

I use EC2 a lot for testing, and recently had to pay a “RHEL tax” as I needed to run a RHEL environment. For most uses I’m sure you can be satisfied by the Amazon Linux AMI. The last numbers suggest Amazon Linux is #2 in terms of usage on EC2.

Anyway, recently Amazon Linux AMI came out with the 2014.03 release (see release

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Running ElasticSearch, LogStash and Kibana in Docker
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As any server farm scales out, it becomes increasingly difficult to Watch All The Things™. I’ve been watching the progress of LogStash+ElasticSearch+Kibana (also known as an ELK stack) for a while and gave it a go this weekend. The trick for me was wanting to run each element inside of a separate Docker container so that I have easily portable elements to scale out with.

A step back. What is Docker? Docker is a container (using LXC) around an application. In short, you install Docker, start a container using a base image (CentOS, Ubuntu, etc.) and then run the container, dropping you into a shell. From

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The Tools To Use
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Over the past couple of years, several tools have come up to solve some of the long standing problems for developers, DBAs and operations teams. This list is no where near exhaustive and your mileage may vary.

These tools should let you get up and coding, saving your code to a central place.

I run (Mac/Windows), I need a Linux server to learn some of this cool stuff, right?

Not exactly. VirtualBox is a virtualization project for multiple platforms (Mac, Win, Linux, Solaris) that allows you to run a guest OS right from your laptop or desktop. There are repositories of images (alternative here) that you can use to get yourself going quickly, or you can provision your own.

I set up (cool  [Read more...]

Compile at CentOS 6.5 the new MySQL webscalesql-5.6.17 branch by Facebook, Google, LinkedIn, and Twitter
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http://webscalesql.org/

yeah , big buzz around that one :)

So I decided to check the install process:

1. Clone the repo from

root@webscalesql-5.6.clean:[Mon Mar 31 11:37:11][~]$ cd /opt/
root@webscalesql-5.6.clean:[Mon Mar 31 11:37:15][/opt]$ mkdir installs
root@webscalesql-5.6.clean:[Mon Mar 31 11:37:17][/opt]$ cd installs/
root@webscalesql-5.6.clean:[Mon Mar 31 11:37:19][/opt/installs]$ git clone https://github.com/webscalesql/webscalesql-5.6.git
Initialized empty Git repository in /opt/installs/webscalesql-5.6/.git/
remote: Counting objects: 30397, done.
remote: Compressing objects: 100% (12678/12678), done.
remote: Total 30397 (delta 18716), reused
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Install MySQL fork MariaDB 10.0.9 on CentOS release 6.5 with server_audit-1.1.5 and oqgraph-engine
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I needed to test the new server audit plug-in on latest MariaDB 10.0.9
More info about that handy plug in you may find here : http://www.skysql.com/downloads/mariadb-audit-plugin
Take a moment to read the info, along with that nice blog : http://www.skysql.com/blogs/ralf-gebhardt/activating-auditing-mariadb-and-mysql-5-minutes

In short:

root@mariadb-10.0.9:[Mon Mar 24 07:51:54][/tmp/]$ lftp http://ftp.igh.cnrs.fr/pub/mariadb/mariadb-10.0.9/yum/
cd ok, cwd=/pub/mariadb/mariadb-10.0.9/yum                                   
lftp ftp.igh.cnrs.fr:/pub/mariadb/mariadb-10.0.9/yum> bookmark add mariadb-10.0.9
lftp


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dpkg: dependency problems prevent configuration of mysql-workbench-community for Ubuntu 13.04
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While installing mysql-workbench-community-6.0.9 on Ubuntu 13.04 if you get below error. root@Dell-XPS:/home/nilnandan/Downloads# dpkg -i mysql-workbench-community-6.0.9-1ubu1204-amd64.deb Selecting previously unselected package mysql-workbench-community. (Reading database … 203112 files and directories currently installed.) Unpacking mysql-workbench-community (from mysql-workbench-community-6.0.9-1ubu1204-amd64.deb) … dpkg: dependency problems prevent configuration of Continue reading →   [Read more...]
Capturing MySQL Data with tcpdump
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Percona Toolkit has a great tool, pt-query-digest, that can use tcpdump data. Capturing raw tcp data can be taxing on a server, however, when you see the following message:

64000 packets received by filter
12000 packets dropped by kernel

When there is a significant amount of user cpu% being used, the kernel will drop packets you are trying to capture, leading to a partial picture and missing data. I’ve found that if you write it using the native tcpdump format, it’s more efficient and you drop less. There are also recommendations on Stack Overflow on how to help

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We're hiring!
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Continuent, a leading provider of database clustering and replication software has five (5) new positions open: Build/Test Engineer Senior Database Availability and Clustering Engineer Senior Database Replication Engineer Data Replication Sales Engineer Clustering and Replication Test Development Engineer If you want to get in on the ground floor of a growing company in a challenging field
The joy of Unicode
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So, back in late 2008, rather soon after we got to start working on Drizzle full time, someone discovered unicodesnowmanforyou.com, or:

Since we had decided that Drizzle was going to be UTF-8 everywhere,(after seeing for years how hard it was for people to get character sets correct in MySQL) we soon added ☃.test to the tree, which tried a few interesting things:

CREATE TABLE ☃; CREATE DATABASE ☃; etc etc

Because what better to show off UTF-8 than using odd Unicode characters for table names, database names and file names. Well… it turns out we were all good except if you attempted to check out the source tree on Solaris. It was some combination of Python, Bazaar and Solaris that meant you


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10 Newer Entries Showing entries 31 to 40 of 1147 10 Older Entries

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