debian(wheezy)安装mysql的时候报错There's not enough sp
新机器,安装#apt-get install mysql-server提示需要安装mysql-server-5.5 等其它几个。 于是跟上。 到了安装的时候提示错误。 Setting up mysql-common (5.5.33+dfsg-0+wheezy1) ...(Reading database ... 180252 files and directories currently installe
新机器,安装#apt-get install mysql-server提示需要安装mysql-server-5.5 等其它几个。 于是跟上。 到了安装的时候提示错误。
Setting up mysql-common (5.5.33+dfsg-0+wheezy1) ... (Reading database ... 180252 files and directories currently installed.) Unpacking mysql-server-5.5 (from .../mysql-server-5.5_5.5.33+dfsg-0+wheezy1_amd64.deb) ... ERROR: There's not enough space in /var/lib/mysql/ dpkg: error processing /var/cache/apt/archives/mysql-server-5.5_5.5.33+dfsg-0+wheezy1_amd64.deb (--unpack): subprocess new pre-installation script returned error exit status 1 Selecting previously unselected package mysql-server. Unpacking mysql-server (from .../mysql-server_5.5.33+dfsg-0+wheezy1_all.deb) ... Errors were encountered while processing: /var/cache/apt/archives/mysql-server-5.5_5.5.33+dfsg-0+wheezy1_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1)
这里我们分析下问题。apt-get install 调用的dpkg, 然后dpkg 去调的
/var/cache/apt/archives/mysql-server-5.5_5.5.33+dfsg-0+wheezy1_amd64.deb把apt的cache的这个文件复制出来
#cp /var/cache/apt/archives/mysql-server-5.5_5.5.33+dfsg-0+wheezy1_amd64.deb /home/bak
然后我们去看看打包的文件里面是怎么判断的。执行下面的shell,我们把这个包解压出来。
#cd /home/bak && make tmp #mkdir tmp #dpkg-deb -x mysql-server-5.5_5.5.33+dfsg-0+wheezy1_amd64.deb tmp #dpkg-deb --control mysql-server-5.5_5.5.33+dfsg-0+wheezy1_amd64.deb.deb tmp/DEBIAN
然后
#cd tmp/DEBIAN
找到了一个预安装文件叫preinst,用编辑器打开。在149行找到这句话
# checking disc space if LC_ALL=C BLOCKSIZE= df --portability $DATADIR/. | tail -n 1 | awk '{ exit ($4>1000) }'; then echo "ERROR: There's not enough space in $4 and $DATADIR/" 1>&2 db_stop exit 1 fi
这里是个判断,就是刚才我们安装的时候报的错
ERROR: There's not enough space in /var/lib/mysql/现在我们把这个提取出来稍加修改在终端运行一下
#df --portability $DATADIR/. | tail -n 1 | awk '{ print $4 }'显示是空, 所以进来提示, 空间不足。
我们继续把这个preinst改下,或者是修改下判断 比如从$5来判断 或者直接反起来, 把$4>1000 改成$4
然后重新打包
#dpkg -b tmpmysql-server-5.5_5.5.33+dfsg-0+wheezy1_amd64.deb
接下来复制回去mysql-server-5.5_5.5.33+dfsg-0+wheezy1_amd64.deb
#cp mysql-server-5.5_5.5.33+dfsg-0+wheezy1_amd64.deb/var/cache/apt/archives/mysql-server-5.5_5.5.33+dfsg-0+wheezy1_amd64.deb
#yes
继续重新安装发现通过了安装。没有再提示空间不足。
但是问题的根源不在mysql的预安装文件上, 而是在我们自身的系统环境上。
通过排查,发现系统已经安装了一些会影响系统命令输出的程序。
找到你的.bashrc 看看是不是装了一些终端显色的软件。比如cw 它会影响到这个的输出。注释掉这个再运行下刚才修改的语句,就可以看见区别了。
会显示几百万甚至几千万,在preinst这里就会跳过而不报错了。
比如cw 终端显色,正是这个软件导致了系统命令的输出出现了错行。所以,只需要暂时注销掉在.bashrc里面的cw就可以了

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