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    编译hadoop的libhdfs.a

    进入hadoop-hdfs-project/hadoop-hdfs/src目录,执行cmake以生成Makefile文件。 如果遇到如下的错误: ~/hadoop-2.7.1-src/hadoop-hdfs-project/hadoop-hdfs/src]$ cmake . JAVA_HOME=, JAVA_JVM_LIBRARY=/data/jdk/jre/lib/amd64/server/libjvm.so JAVA_INCLUDE_PATH=/data/jdk/include, JAVA_INCLUDE_PATH2=/data/jdk/include/linux Located all JNI components successfully. CMake Error at CMakeLists.txt:84 (MESSAGE):   You must set the CMake variable GENERATED_JAVAH -- Configuring incomplete, errors occurred! 则指定一下cmake参数即可,如下所示: cmake -DJAVA_HOME=/data/jdk -DGENERATED_JAVAH=/data/jdk . 然后带参数再次执行cmake: ~/hadoop-2.7.1-src/hadoop-hdfs-project/hadoop-hdfs/src]$ cmake -DJAVA_HOME=/data/jdk -DGENERATED_JAVAH=/data/jdk . 下面的显示表示cmake成功,会在当前目录下生成Makefile文件: JAVA_HOME=/data/jdk, JAVA_JVM_LIBRARY=/data/jdk/jre/lib/amd64/server/libjvm.so JAVA_INCLUDE_PATH=/data/jdk/include, JAVA_INCLUDE_PATH2=/data/jdk/include/linux Located all JNI components successfully. -- Found PkgConfig: /usr/bin/pkg-config (found version "0.23")  -- checking for module 'fuse' --   package 'fuse' not found -- Failed to find Linux FUSE libraries or include files.  Will not build FUSE client. -- Configuring done -- Generating done -- Build files have been written to: /data/hadoop-2.7.1-src/hadoop-hdfs-project/hadoop-hdfs/src 接下来就可以执行make来编译生成libhdfs.a了。

    02

    CentOS 6.x源码安装Netdata

    《CentOS 6.x源码安装Netdata》介绍了如何基于CentOS 6.x操作系统,通过源码编译的方式安装Netdata,实现实时的性能监测。首先,在终端中运行‘yum install autoconf automake curl gcc git libmnl-devel libuuid-devel lm_sensors make MySQL-python nc pkgconfig python python-psycopg2 PyYAML zlib-devel’安装必要的依赖包。然后,使用‘wget https://github.com/firehol/netdata/releases/download/v1.6.0/netdata-1.6.0.tar.gz -P /usr/loca/src’下载源码包并解压缩。接着,进入解压缩后的目录,运行‘./netdata-installer.sh --install /opt’安装Netdata。最后,将Netdata添加到开机启动项。但是,由于某些原因,可能需要关闭IPv6功能。如果遇到问题,可以尝试使用--force选项强制执行。

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