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May 2016

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LUV Beginners May Meeting: Apache Cassandra Workshop
by Andrew Pam 13 May '16

13 May '16

Start: May 21 2016 12:30 End: May 21 2016 16:30 Location: Infoxchange, 33 Elizabeth St. Richmond Link: http://luv.asn.au/meetings/map This hands-on workshop will provide participants with an introduction to the Cassandra distributed "NoSQL" database management system, including deployment, keyspace and table manipulation, replication, creating multiple datacenters and creating users. Participants will: * Install a Cassandra server * Create a keyspace * Create a table and insert data * Replicate data across a three-node cluster * Replicate data across a two-datacenter cluster * Set up Cassandra and JMX authentication Some virtual machines will be provided, but participants will need to bring their own laptop computer in order to access them. It is also possible to run the exercises on your own laptop, however some some advance preparation is advised - the workshop will require four virtual machines or containers with the following configuration: * minimum of 512Mb each * minimum of 2Gb disk space each * Debian Jessie Paul Dwerryhouse is a Linux System Engineer with Australia Post, a job that involves a combination of system administration, dev-ops, database wrangling, and plenty of coding. He was first introduced to Unix in the form of SunOS 4 in 1991 and Linux in 1994. Shortly after that, he turned it into a twenty-year career of sysadmin and dev-ops (before the world had given dev-ops a name) in Australia and Europe. There will also be the usual casual hands-on workshop, Linux installation, configuration and assistance and advice. Bring your laptop if you need help with a particular issue. The meeting will be held at Infoxchange, 33 Elizabeth St. Richmond 3121 (enter via the garage on Jonas St.) Late arrivals, please call (0490) 049 589 for access to the venue. LUV would like to acknowledge Infoxchange for the venue. Linux Users of Victoria Inc., is an incorporated association, registration number A0040056C.

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LUV Main May 2016 Meeting: UNUM Computing / Monitoring with "mon" and Jabber
by Andrew Pam 02 May '16

02 May '16

Start: May 3 2016 18:30 End: May 3 2016 20:30 Location: 6th Floor, 200 Victoria St. Carlton VIC 3053 Link: http://luv.asn.au/meetings/map PLEASE NOTE CHANGE OF VENUE Speakers: * Lev Lafayette, UNUM Computing * Russell Coker, How to monitor systems with "mon" and Jabber UNUM Computing UNUM is an abbreviation of the Universal Number format developed by John Gustafson in response to the limtations of standard floating point formats. UNUMS provide greater accuracy - and indeed claim to abolish computational error altogether - with typically fewer bits and therefore less power consumption. UNUMS claim to have no overflow, no underflow, and no rounding. Implementations have been made in some mathematical programming languages (e.g., Julia, Python) but hardware manufacturers have been slow to express enthusiasm. Lev Lafayette is the HPC Support and Training Officer at the University of Melbourne. Prior to that he spent several years in a similar role at the recently deceased Victorian Partnership for Advanced Computing and has spent many years on the Linux Users of Victoria committee. How to monitor systems with "mon" and Jabber The "mon" program (which is difficult to Google) is a plug-in based program to monitor a server and network services. Russell will describe how to configure it, write plugins, and make it send alerts via Jabber. Russell Coker has done lots of Linux development over the years, mostly involved with Debian. 200 Victoria St. Carlton VIC 3053 Late arrivals, please call (0490) 049 589 for access to the venue. Before and/or after each meeting those who are interested are welcome to join other members for dinner. We are open to suggestions for a good place to eat near our venue. Maria's on Peel Street in North Melbourne is currently the most popular place to eat after meetings. LUV would like to acknowledge Red Hat and Infoxchange for their help in obtaining the meeting venues. Linux Users of Victoria Inc. is an incorporated association, registration number A0040056C.

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