Nutch 1.3

[intro]

7 June 2011 - Apache Nutch 1.3 Released

[get]

​get nutch

cd /opt/nutch-1.3
ant

[setup]

deploy

可將 bin/nutch 與 nutch-1.3.job 放到 hadoop 與之整合

local

cd /opt/nutch-1.3/runtime/local

• bin/nutch (inject)

export JAVA_HOME="/usr/lib/jvm/java-6-sun"

• conf/nutch-site.xml (inject)

<configuration>
<property>
  <name>http.agent.name</name>
  <value>waue_test</value>
</property>
<property>
  <name>plugin.includes</name>
  <value>protocol-http|urlfilter-regex|parse-(html|tika)|index-(basic|anchor)|scoring-opic|urlnormalizer-(pass|regex|basic)</value>
</property>
<property>
  <name>http.robots.agents</name>
  <value>nutch</value>
</property>
<property>
  <name>http.agent.url</name>
  <value>waue_test</value>
</property>
<property>
  <name>http.agent.email</name>
  <value>waue_test</value>
</property>
<property>
  <name>http.agent.version</name>
  <value>waue_test</value>
</property>
</configuration>

• conf/regex-urlfilter.txt (replace) (1.2 conf/crawl-urlfilter.txt)

-^(file|ftp|mailto):

# skip image and other suffixes we can't yet parse
-\.(gif|GIF|jpg|JPG|png|PNG|ico|ICO|css|sit|eps|wmf|zip|ppt|mpg|xls|gz|rpm|tgz|mov|MOV|exe|jpeg|JPEG|bmp|BMP)$

# skip URLs containing certain characters as probable queries, etc.
-[*!]

# skip URLs with slash-delimited segment that repeats 3+ times, to break loops
#-.*(/[^/]+)/[^/]+\1/[^/]+\1/

# accept anything else
+.

[execute]

mkdir urls ; echo "http://lucene.apache.org/nutch/" >urls/url.txt
bin/nutch crawl urls -dir crawl2 -depth 2 -topN 50

• finally , you will get only 3 directories.

  crawldb  linkdb  segments