问题：
[hadoop@localhost hadoop]$ ./sbin/
Starting namenodes on [localhost]
Starting datanodes
Starting secondary namenodes [localhost]
2019-04-06 07:26:22,110 WARN : Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
解决：
cd /usr/local/hadoop/lib ldd .1.0.0 ./.1.0.0: /lib64/.6: version `GLIBC_2.14' not found (required by ./.1.0.0) .1 => (0x00007fff901ff000) .2 => /lib64/.2 (0x00007f8ceda5d000) .0 => /lib64/.0 (0x00007f8ced83f000) .6 => /lib64/.6 (0x00007f8ced4ac000) /lib64/.2 (0x00000031c1e00000)# download wget /gnu/glibc/glibc-2..bz2 wget /gnu/glibc/glibc-linuxthreads-2..bz2 # 解压 tar -xjvf glibc-2..bz2 cd glibc-2.14 tar -xjvf ../glibc-linuxthreads-2..bz2 # 加上优化开关，否则会出现错误'#error "glibc cannot be compiled without optimization"' cd ../ export CFLAGS="-g -O2" glibc-2.14/configure --prefix=/usr --disable-profile --enable-add-ons --with-headers=/usr/include --with-binutils=/usr/bin --disable-sanity-checks make sudo make install