Return-Path: X-Original-To: apmail-cassandra-user-archive@www.apache.org Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id EC28E6DD5 for ; Wed, 22 Jun 2011 22:36:32 +0000 (UTC) Received: (qmail 21416 invoked by uid 500); 22 Jun 2011 22:36:30 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 21386 invoked by uid 500); 22 Jun 2011 22:36:30 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 21374 invoked by uid 99); 22 Jun 2011 22:36:30 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 22 Jun 2011 22:36:30 +0000 X-ASF-Spam-Status: No, hits=2.0 required=5.0 tests=FREEMAIL_FROM,FS_LARGE_PERCENT2,RCVD_IN_DNSWL_LOW,RFC_ABUSE_POST,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of chris.burroughs@gmail.com designates 209.85.212.44 as permitted sender) Received: from [209.85.212.44] (HELO mail-vw0-f44.google.com) (209.85.212.44) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 22 Jun 2011 22:36:23 +0000 Received: by vws12 with SMTP id 12so1314652vws.31 for ; Wed, 22 Jun 2011 15:36:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:message-id:date:from:user-agent:mime-version:to :cc:subject:references:in-reply-to:content-type :content-transfer-encoding; bh=6k1xlfSIYQ34eY3MaobH0L+8/N9IuUhzIFXe02ypaQU=; b=KTR2mNPjKElzhkuZAgkvsPnGcv2UgEv4hoEFeXMvk8DgwIy+xBlCDiQiwGdlxF6Yd5 qfKDFc9L4L6z5kw/fup8QxtzW5xrcri/8J3T7ig700qEZt6oaK3zFUgVw7gxwoIrapkF xRjHv2OT4Mgb7pTE1nDYVraex8DpFWAowAszo= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=Qc3UxSJpzhVYBj6cnGkQ3LcWxRGYu++OOZeYTSO5a9Xr4OFQ8D7ss39OfBd57QAuOB Ndk6N/hQffbv17dWlywHFo7p+9f/+SSLttW6vgg5NWVwqpBjbVS7eM8jducmowHtVsHY yieTTlufPsiGrXC3GfD4tlrZsc6bmJ+GRVFbk= Received: by 10.52.32.35 with SMTP id f3mr1757579vdi.267.1308782162369; Wed, 22 Jun 2011 15:36:02 -0700 (PDT) Received: from [10.10.17.161] (cl-pat-tr.clearspring.com [8.18.54.254]) by mx.google.com with ESMTPS id p19sm577215vbs.3.2011.06.22.15.36.01 (version=SSLv3 cipher=OTHER); Wed, 22 Jun 2011 15:36:01 -0700 (PDT) Message-ID: <4E026E4C.40601@gmail.com> Date: Wed, 22 Jun 2011 18:35:56 -0400 From: Chris Burroughs User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110424 Thunderbird/3.1.10 MIME-Version: 1.0 To: user@cassandra.apache.org CC: Les Hazlewood Subject: Re: 99.999% uptime - Operations Best Practices? References: In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Virus-Checked: Checked by ClamAV on apache.org On 06/22/2011 05:33 PM, Les Hazlewood wrote: > Just to be clear: > > I understand that resources like [1] and [2] exist, and I've read them. I'm > just wondering if there are any 'gotchas' that might be missing from that > documentation that should be considered and if there are any recommendations > in addition to these documents. > > Thanks, > > Les > > [1] http://www.datastax.com/docs/0.8/operations/index > [2] http://wiki.apache.org/cassandra/Operations > Well if they new some secret gotcha the dutiful cassandra operators of the world would update the wiki. The closest thing to a 'gotcha' is that neither Cassandra nor any other technology is going to get you those nines. Humans will need to commit to reading the mailing lists, following JIRA, and understanding what the code is doing. And humans will need to commit to combine that understanding with monitoring and alerting to figure out all of the "it depends" for your particular case.