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httpd.conf programming
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jeffhung
April 20, 2013
Programming
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httpd.conf programming
My Lightning talk in OSDC.tw 2013
jeffhung
April 20, 2013
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Transcript
httpd.conf programming OSDC.tw 2013
@jeffhung • www.jeffhung.net/blog • Trend Micro Developer • Hadoop, Big
Data • and.. PaaS
PaaS?
Platform as a Service
Google AppEngine
TCloud, 2010
The Path to Pass into PasS Talk @ OSDC.tw 2011
Dispatcher MySQL& Database& MySQL& Database& MySQL& Database& MySQL& Database& Java&Web&
Container& Java&Web& Container& Java&Web& Container& Java&Web& Container& Hadoop& HBase& Hadoop& HBase& Hadoop& HBase& Hadoop& HBase& Lucene& Indexer& Lucene& Indexer& Lucene& Indexer& Search& Engine& Elaster&CAP&Service& (API&Server)& Elaster&CAP&Service& (API&Server)& Elaster&CAP&Service& (API&Server)& Elaster&CAP&Service& (API&Server)& api.elasterlabs.com.tw *.app.elasterlabs.com.tw Internet& Balancer Manage&
nginx
ZooKeeper
Lots of Java codes to implement the agents to control
nginx according to routing rules subscribed from ZK
Jserv: 㑌ཁሜҰ ࡞ۀܥ౷
lunastorm: 㑌ཁሜ Ұ message system
jeffhung: 㑌ཁሜҰ PaaS
20 RD + 6 months to built Elaster CAP
5 RD + 6 weeks to bootstrap a private PaaS
for our own
How?
We have a strong OPS team
do more with less don’t code anything
Apache HTTPd ++
Dispatcher done in httpd.conf
If it works, it works.
Bug? It’s apache’s fault
Redis replaces ZK
Apache replaces nginx
Glue together with httpd.conf
httpd.conf programming
function REDIS (cmd) { ... } # Call REDIS()?
# function REDIS (cmd) { ... } RewriteMap REDIS "prg:redis-cli
--raw" # Call REDIS()? ${REDIS:cmd}
if url == "/index.html" redirect "/404.html" else if proxy "/app/...",
"http://app/REDIS(app)"
# function REDIS (cmd) { ... } RewriteMap REDIS "prg:redis-cli
--raw" # if url == "/index.html" # redirect "/404.html" RewriteRule ^/index.html /404.html [L,P] # else if # proxy "/app/...", "http://app/REDIS(app)" RewriteRule ^([^\/]*)/(.*) ${REDIS:GET\ $1}/$2 [L,P]
Live Demo simplified https://github.com/jeffhung/osdc-2013-lightning
The Actual httpd.conf • Authentication & Authorization • Customer Header
Injection • Dispatching & Load Balancing
~200 lines of httpd.conf And several filter scripts
~200 lines of httpd.conf And several filter scripts dash2under.pl: #!/usr/bin/perl
$| = 1; # Turn off I/O buffering while (<STDIN>) { s/-/_/g; # Replace dashes with underscores print $_; }
If it works, it works.