问题描述：

运行format命令后，无法启动hdp 2.3.4 centos 7中的namenode。我得到以下错误：错误：无法找到配置目录：启动下面是的.bashrc文件：在centos7格式化后无法启动namenode

if [ -f ~/.bashrc ]; then 
    . ~/.bashrc 
fi

用户的特定环境和启动程序

PATH=$PATH:$HOME/bin 

export PATH 
export JAVA_HOME=$PATH/jdk1.7.0_71 
export HADOOP_INSTALL=$PATH/hadoop-2.3.4 
export PATH=$PATH:$HADOOP_INSTALL/bin 
export PATH=$PATH:$HADOOP_INSTALL/sbin 
export HADOOP_MAPRED_HOME=$HADOOP_INSTALL 
export HADOOP_COMMON_HOME=$HADOOP_INSTALL 
export HADOOP_HDFS_HOME=$HADOOP_INSTALL 
export YARN_HOME=$HADOOP_INSTALL 
export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_INSTALL/lib/native 
export HADOOP_OPTS="-Djava.library.path=$HADOOP_INSTALL/lib"

下面是我执行启动命令名称节点：

/usr/hdp/current/hadoop-hdfs-namenode/../hadoop/sbin/hadoop-daemon.sh --config $HADOOP_CONF_DIR start namenode

reflext PATH变量是要举行一个导演名单IES。我不确定它是否会影响到你，但肯定有一些错误：export HADOOP_INSTALL = $ PATH/hadoop-2.3.4 – facha

尝试从java中删除'$ PATH'，Hadoop安装 – BruceWayne

没有什么不同，它越好实际上恶化了。无法立即申请到$ HDFS_USER –

答

错误

Error: Cannot find configuration directory:

由于命令中使用的变量$ HADOOP_CONF_DIR未在环境中设置并且尝试启动namenode而没有实际配置--config $HADOOP_CONF_DIR路径，所以会引发此错误。

固定的环境变量赋值后，.bashrc中应该是这样的（假设安装直通压缩包）

export JAVA_HOME=/<absolute_path_where_jdk_is_extracted>/jdk1.7.0_71 
export HADOOP_INSTALL=/<absolute_path_where_hdp_is_extracted>/hadoop-2.3.4 
export HADOOP_MAPRED_HOME=$HADOOP_INSTALL 
export HADOOP_COMMON_HOME=$HADOOP_INSTALL 
export HADOOP_HDFS_HOME=$HADOOP_INSTALL 
export YARN_HOME=$HADOOP_INSTALL 
export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_INSTALL/lib/native 
export HADOOP_OPTS="-Djava.library.path=$HADOOP_INSTALL/lib" 
export HADOOP_CONF_DIR=$HADOOP_INSTALL/etc/hadoop 
export PATH=$PATH:$HADOOP_INSTALL/bin:$HADOOP_INSTALL/sbin:$JAVA_HOME/bin

答

更新您的.bashrc下面参数

export JAVA_HOME= location of the JAVA_home (/usr/java/jdk1.x.x) 
export HADOOP_HOME=location of the HADOOP_HOME (User defined) 
export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin 
export PATH

注：安装Hadoop的位置应该与HADOOP_HOME，它将在hadoop-env.sh

在centos7格式化后无法启动namenode

用户的特定环境和启动程序

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