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发表于 2009-1-30 11:36:47
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29 Jan 2009 23:25:26 UTC
The replica mysql database on sidious recovered more or less just fine. It may be ever so slightly out of sync with the master database. This means we'll probably rebuild it during the next weekly outage just to be sure.
The scheduling server was up and down yesterday afternoon and this morning. The scheduler CGIs have been segfaulting and adding core dumps caused the system to grind to a halt, needing a reboot. Turns out the problem wasn't in the CGI, but in apache itself (or the fastcgi module). This has been a problem in the past. We seem to have to tweak various apache parameters at random times, based on a chaotic, unpredictable equation involving current resources/demands, mysql health, network health, system health, various queue sizes, etc. Simply reducing the MaxClients to a much lower number caused the segfaults to disappear while still servicing all incoming requests.
We're running low on data to send out, and we're in a murky period where the weekend is rapidly approaching and we are still awaiting the latest shipment of raw data drives from Arecibo. We could pull up as-yet-unanalysed data from our archives, but the offsite storage archive (HPSS) is undergoing several upgrades and have been offline for days. We'll see how this all pans out...
- Matt
mysql 的冗余数据库服务器恢复得不错。。问题可能是之前与主数据库有稍微不同步所致,在下周的维护中需要重建它。
原始数据几乎分发完了,周末降至。。
正在等待阿雷西博最新的一批数据,虽然可以从档案库中拿出未被分析的数据,但那些硬件在最近几天或多或少需要进行一些升级。。看是否顺利吧。。 |
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