• General

    Rolling restart replicated services behind an application load balancer

    by  • November 7, 2012 • General • 0 Comments

    Usually following a new release deployment the operation engineer needs to do a rolling restart of the running services. In order to avoid restarting the services at the same time and thus generating an out-of-service window you can use the following cluster command: $ sleep $((10+`HOST=$(hostname -s) bash -c 'echo ${HOST:${#HOST}-1}'`)) $ service my-replicated-service...

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    Instead of introduction

    by  • October 19, 2010 • General • 1 Comment

    Quite often in the past years I’ve been tempted to start writing  my thoughts about the it-sphere, being them breakthrough ideas, silly information everybody knows except me or simply comments on current trends in this fast paced industry. So far though I was lazy enough to stick with the blog reader role….not anymore I chose cloudware to...

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