Possible MySQL auto_increment duplicates with InnoDB – beware!
I was happily eating my apple when one of our developers reached out to me with strange issue. Basically he couldn’t fall asleep and decided to go through our mysql binlogs files ( yeah, I know! 🙂 ).
Anyways, earlier this week we discovered some issues with our shipping labels being rejected and our provider said that we were sending duplicate ids. …
Docker + Hodor for simple and reliable dev setup
Prerequisites
Here is real world scenario: You have this project you are working on, it requires php 5.3 ( yeah, old I know 🙂 ) in fpm mode + xdebug + nginx and maybe something else (database?). You spent couple days configuring all that stuff on your workstation and everything works.. …
Manual way to feed old/new log entires to logstash
From time to time your Logstash process may crash and you start seeing gaps on your Kibana graph (you graph logs and monitor those, right? ). That may also, coincidentally?, correlate with downtime you had 10 minutes ago.. So you need to replay missing events back into Logstash and figure out what happened. …
Docker VM shortcomings and how Hodor can help
Bright side
Finally Docker hype reached FastCompany and here I am adding to it : ) I wish I started with Docker intro post first, but I bet there are tons of stuff like this already on the nets. Instead I’ll assume most readers will already be familiar with Docker in some way. …
Build Zappos like faceted navigation with ElasticSearch
I’ve been looking at different facets implementations while working on REST Search API for my ecommerce store. Some of the solutions I saw were simple to achieve (like plain faceting by terms with single selection), while others required some thinking and some extra work.
Today we will talk about Zappos facets, …
Little trick to get AWS instance_id as variable in Nginx
If you are running in AWS environment it might be useful to get Amazon instance_id in Nginx for different purposes (logging, headers etc).
To do that we need to compile Nginx with Perl support (–with-http_perl_module flag during compilation). After that is done we can put this snippet inside of our httpd Nginx config section:
Important: While the Perl module is performing a long-running operation, …
Use Nginx basic auth to protect HTTP services like Solr
Sometimes it might be useful to add simple permissions layer on top of unprotected HTTP services ( especially if you would like to open those to the public! ). Recently we had to secure our Solrcloud install to be able to provide read only access to our FTS index to a partner, …
Dealing with multiple config sets in Solr(+cloud)
Solr in “cloud” mode (solrcloud)
One of the first steps for solrcloud cluster setup is collection configuration preparation. Usually it’s done like this:
-Dbootstrap_confdir=./solr/collection1/conf -Dcollection.configName=myconf
If you start Solr with above attributes, it will load configuration files under ./solr/collection1/conf to Zookeeper with myconf name. …
Improve and simplify Solr logging with Nginx proxy
In efforts to provide better visibility to all parts of our application framework we decided to collect and send Solr query logs to our logging farm for further analysis and smoke tests. For logging aggregation we use Logstash with Kibana – …
Story behind X-Forwarded-For and X-Real-IP headers
This was suppose to be 10 minutes fix..
Or so I thought. If you read my blog you probably know that for the most part I’m doing operations stuff for FastCompany. That means sometimes I deal with little tricky problems like the one I’m going to talk about today. …