Changes between Version 1 and Version 2 of waue/2009/0409

Timestamp:

Apr 9, 2009, 4:28:22 PM (16 years ago)

Author:

waue

Comment:

--

waue/2009/0409

@@ -6 +6 @@
  style="font-weight: bold;"><big><big>Nutch 完整攻略</big></big></big></div>
 }}}
- = Nutch 完整攻略 = 
 
- == 前言 == 
+
+ = 前言 = 
  * 雖然之前已經測試過了，網路上也有許多人分享過成功的經驗，然而這篇的重點
    * 完整的安裝nutch，並解決中文亂碼問題
@@ -14 +14 @@
    * 搜尋引擎不只是找網頁內的資料，也能爬到網頁內的檔案(如pdf,msword)
 
- == 環境 ==
+ = 環境 =
+ * 目錄
+|| /opt/nutch || nutch 家目錄||
+|| /opt/nutch_conf || nutch設定檔 ||
+|| /opt/hadoop || hadoop家目錄 ||
+|| /opt/conf || hadoop設定檔 ||
+|| /tmp/ || 日誌檔、中間檔與暫存檔 ||
+
+ * 
+== step 1 安裝好Hadoop叢集 ==
+
+ * 可以參考這篇 [wiki:0330Hadoop_Lab3hadoop叢集安裝]
+ * 當然單機版也可以，只是這樣就直接安裝nutch更省事囉！單機安裝nutch可以參考這裡[wiki:waue/2009/0406 nutch安裝]，但是設定檔要參考這篇的才完整。
+
+== step 2 下載與安裝 == 
+ 
+ * 下載 java 1.6
+{{{
+$ sudo apt-get install sun-java6-bin
+}}}
+ * 下載 nutch 1.0 (2009/03/28)
+{{{
+$ wget http://ftp.twaren.net/Unix/Web/apache/lucene/nutch/nutch-1.0.tar.gz
+}}}
+
+== step 3 編輯設定檔 ==
+ * 所有的設定檔都在 $NUTCH_HOME/conf 下
+=== 3.1 hadoop-env.sh ===
+將原本的檔案hadoop-env.sh任意處插入
+{{{
+#!sh
+export JAVA_HOME=/usr/lib/jvm/java-6-sun
+export HADOOP_HOME=/opt/nutch
+export HADOOP_LOG_DIR=/tmp/nutch/logs
+export HADOOP_SLAVES=/opt/nutch/conf/slaves
+}}}
+=== 3.2 hadoop-site.xml ===
+{{{
+#!sh
+<configuration>
+<property>
+    <name>fs.default.name</name>
+    <value>gm1.nchc.org.tw:9000</value>
+    <description> The name of the default file system. Either the literal string "local" or a host:port for NDFS. </description>
+</property>
+<property>
+    <name>mapred.job.tracker</name>
+    <value>gm1.nchc.org.tw:9001</value>
+    <description> The host and port that the MapReduce job tracker runs at. If "local", then jobs are run in-process as a single map and reduce task. </description>
+</property>
+</configuration>
+}}}
+=== 3.3 nutch-site.xml ===
+{{{
+#!sh
+<configuration>
+<property>
+  <name>http.agent.name</name>
+  <value>waue</value>
+  <description>HTTP 'User-Agent' request header. </description>
+</property>
+<property>
+  <name>http.agent.description</name>
+  <value>MyTest</value>
+  <description>Further description</description>
+</property>
+<property>
+  <name>http.agent.url</name>
+  <value>gm1.nchc.org.tw</value>
+  <description>A URL to advertise in the User-Agent header. </description>
+</property>
+<property>
+  <name>http.agent.email</name>
+  <value>waue@nchc.org.tw</value>
+  <description>An email address
+  </description>
+</property>
+</configuration>
+}}}
+=== 3.4 slaves ===
+其實不用改，因為原本就是localhost
+{{{
+#!sh
+localhost
+}}}
+=== 3.5 crawl-urlfilter.txt ===
+將此檔的兩行改為下面內容
+{{{
+#!sh
+# skip URLs containing certain characters as probable queries, etc.
+-[*!@]
+
+# accept hosts in MY.DOMAIN.NAME
++^http://([a-z0-9]*\.)*.*/
+}}}
+
+
+== step 4 執行 == 
+=== 4.1 編輯url清單 ===
+{{{
+$ mkdir urls
+$ vim urls.txt
+}}}
+
+{{{
+#!sh
+http://lucene.apache.org
+}}}
+
+=== 4.2 開啟HDFS ===
+{{{
+$ bin/hadoop namenode -format
+$ bin/start-all.sh
+}}}
+=== 4.3 上傳清單到HDFS ===
+{{{
+$ bin/hadoop -put urls urls
+}}}
+=== 4.4 執行nutch crawl ===
+{{{
+$ bin/nutch crawl urls -dir crawl01 -depth 3
+}}}
+== step 5 web瀏覽 ==
+
+=== 5.1 安裝tomcat ===
+ * 下載
+{{{
+$ cd /opt/
+$ wget http://ftp.twaren.net/Unix/Web/apache/tomcat/tomcat-6/v6.0.18/bin/apache-tomcat-6.0.18.tar.gz
+}}}
+
+ * 解壓縮
+{{{
+$ tar -xzvf apache-tomcat-6.0.18.tar.gz
+$ mv apache-tomcat-6.0.18 tomcat
+}}}
+
+=== 5.2 將crawl結果匯入tomcat ===
+
+{{{
+$ cd /opt/nutch
+$ mkdir web
+$ cd web
+$ jar -xvf nutch-1.0.war
+$ rm nutch-1.0.war
+$ mv /opt/tomcat/webapps/ROOT /opt/tomcat/webapps/ROOT-ori
+$ cd /opt/nutch
+$ mv /opt/nutch/web /opt/tomcat/webapps/ROOT
+$ vim /opt/tomcat/webapps/ROOT/WEB-INF/classes/nutch-site.xml
+}}}
+
+{{{
+#!sh
+<configuration>
+    <property>
+        <name>searcher.dir</name>
+        <value>/opt/search</value>
+    </property>
+</configuration>
+}}}
+
+並且修改 /opt/tomcat/conf/server.xml 以修正中文問題
+{{{
+#!sh
+    <Connector port="8080" protocol="HTTP/1.1"
+               connectionTimeout="20000"
+               redirectPort="8443" URIEncoding="UTF-8"/>
+}}}
+=== 5.3 瀏覽crawl結果 ===
+{{{
+$ /opt/tomcat/bin/startup.sh
+}}}
+
+
+[http://gm1.nchc.org.tw:8080]