kernel: php-cgi[26075]: segfault at 000000000000000f rip 00002b8fa54df0b8 rsp 00007fff905e9a40 error 4

原因，开启了php的线程安全模式，与eaccelerator冲突导致的
就是安装时，./configure 加入了--enable-maintainer-zts
解决办法：
安装php时，去掉该参数00

幸好同事介绍了autoexpect，它会把你的操作录制成脚本

使用方法是

/usr/bin/autoexpect  你的命令

然后它就会把它录制下来， 存在当前目录scripts.exp

但端口可以正常起来
程序也可以正常的跑，但看着这个错 ，就是觉得不爽，就像解决它
如果想知道怎么定位是eaccelerator导致的
参考下
用gdb分析段错误（Segmentation fault）
网上找了些资料，终于找到解决办法
原来是我们开启了PHP的线程安全模式，参数是 configure --enable-maintainer-zts
网上说是EA不能在线程安全模式下很好地工作导致的

解决，configure时去掉 --enable-maintainer-zts就OK了

看完后，开工
vi /root/.bash_profile
加入ulimit -S -c unlimited > /dev/null 2>&1
保存退出，重新加载配置
source /root/.bash_profile

经研究发现，只要把
/usr/local/php/bin/php-cgi --fpm --fpm-config /usr/local/php/etc/php-fpm.conf
放到脚本里都会报
Segmentation fault

vi /root/test.sh
添加
/usr/local/php/bin/php-cgi --fpm --fpm-config /usr/local/php/etc/php-fpm.conf

cd /root
sh test.sh
这是它会报Segmentation fault，并在/root下产生一个core.28522文件，这个文件名后面的数字是随机的
现在我们来看下core.28522里面到底是什么内容,需要用到gdb这个工具

yum -y install gdb

gdb使用的方法是
gdb 产生core时执行的命令 core文件

gdb /usr/local/php/bin/php-cgi core.28522

我们在最后会看到
Core was generated by `/usr/local/php/bin/php-cgi --fpm --fpm-config /usr/local/php/etc/php-fpm.conf'.
Program terminated with signal 11, Segmentation fault.
#0 0x00007f895e2df0b8 in eaccelerator_clean_shutdown ()
from /usr/local/php/lib/php/extensions/no-debug-zts-20060613/eaccelerator.so

由此，我们定位到是EA导致整个段错误的

nginx编译参数：
#/usr/local/nginx/sbin/nginx -V
nginx version: nginx/0.6.32

built by gcc 4.1.2 20071124 (Red Hat 4.1.2-42)

configure arguments: --user=www --group=www --prefix=/usr/local/nginx/ --with-http_stub_status_module --with-openssl=/usr/local/openssl

apache编译参数：
# cat /usr/local/apache2/build/config.nice
#! /bin/sh

#

# Created by configure

"./configure" \

"--prefix=/usr/local/apache2" \

"--with-included-apr" \

"--enable-so" \

"--enable-deflate=shared" \

"--enable-expires=shared" \

"--enable-rewrite=shared" \

"--enable-static-support" \

"--disable-userdir" \

"$@"

php编译参数：

# /usr/local/php/bin/php -i |grep configure

Configure Command => './configure' '--prefix=/usr/local/php' '--with-apxs2=/usr/local/apache2/bin/apxs' '--with-config-file-path=/usr/local/php/etc' '--with-mysql=/usr/local/mysql' '--with-libxml-dir=/usr/local/libxml2/bin' '--with-gd=/usr/local/gd2' '--with-jpeg-dir' '--with-png-dir' '--with-bz2' '--with-xmlrpc' '--with-freetype-dir' '--with-zlib-dir'

mysql编译参数：

# cat "/usr/local/mysql/bin/mysqlbug"|grep configure

# This is set by configure

CONFIGURE_LINE="./configure '--prefix=/usr/local/mysql' '--localstatedir=/var/lib/mysql' '--with-comment=Source' '--with-server-suffix=-H863' '--with-mysqld-user=mysql' '--without-debug' '--with-big-tables' '--with-charset=gbk' '--with-collation=gbk_chinese_ci' '--with-extra-charsets=all' '--with-pthread' '--enable-static' '--enable-thread-safe-client' '--with-client-ldflags=-all-static' '--with-mysqld-ldflags=-all-static' '--enable-assembler' '--without-isam' '--without-innodb' '--without-ndb-debug'"

转载自：http://hi.baidu.com/xi4oyu/blog/item/8a0e1ed020e81adb562c8452.html

但如果我们所查看的机器用的不是博通的网卡，则可以通过以下方法查看
我们知道博通网卡的驱动文件名叫bnx2.ko
我们查找下bnx2.ko的位置
updatedb
locate bnx2.ko
结果如下
/lib/modules/2.6.32-71.el6.x86_64/kernel/drivers/net/bnx2.ko
查看驱动详细情况
modinfo /lib/modules/2.6.32-71.el6.x86_64/kernel/drivers/net/bnx2.ko
以下信息中，version记录就是我们的网卡驱动版本，是2.0.8-j15

filename: /lib/modules/2.6.32-71.el6.x86_64/kernel/drivers/net/bnx2.ko
firmware: bnx2/bnx2-rv2p-09ax-5.0.0.j10.fw
firmware: bnx2/bnx2-rv2p-09-5.0.0.j10.fw
firmware: bnx2/bnx2-mips-09-5.0.0.j15.fw
firmware: bnx2/bnx2-rv2p-06-5.0.0.j3.fw
firmware: bnx2/bnx2-mips-06-5.0.0.j6.fw
version: 2.0.8-j15
license: GPL
description: Broadcom NetXtreme II BCM5706/5708/5709/5716 Driver
author: Michael Chan <mchan@broadcom.com>
srcversion: 8CDA41B3E0DF70A112FBA80
alias: pci:v000014E4d0000163Csv*sd*bc*sc*i*
alias: pci:v000014E4d0000163Bsv*sd*bc*sc*i*
alias: pci:v000014E4d0000163Asv*sd*bc*sc*i*
alias: pci:v000014E4d00001639sv*sd*bc*sc*i*
alias: pci:v000014E4d000016ACsv*sd*bc*sc*i*
alias: pci:v000014E4d000016AAsv*sd*bc*sc*i*
alias: pci:v000014E4d000016AAsv0000103Csd00003102bc*sc*i*
alias: pci:v000014E4d0000164Csv*sd*bc*sc*i*
alias: pci:v000014E4d0000164Asv*sd*bc*sc*i*
alias: pci:v000014E4d0000164Asv0000103Csd00003106bc*sc*i*
alias: pci:v000014E4d0000164Asv0000103Csd00003101bc*sc*i*
depends:
vermagic: 2.6.32-71.el6.x86_64 SMP mod_unload modversions
parm: disable_msi:Disable Message Signaled Interrupt (MSI) (int)

例如
yum -y install libjpeg libjpeg-devel libpng libpng-devel libxml2 libxml2-devel zlib zlib-devel glibc glibc-devel glib2 glib2-devel mhash freetype freetype-devel

这样安装,系统默认只会安装64位版本,假设我们用以下命令去安装PHP

CHOST="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -O2 -pipe" CXXFLAGS="-march=nocona -O2 -pipe" \
./configure --prefix=/usr/local/php \
--with-config-file-path=/etc \
--with-mysql=/usr/loca/mysql --with-pdo-mysql=/usr/local/mysql/bin/mysql_config \
--with-mysqli=/usr/local/mysql/bin/mysql_config \
--with-iconv-dir=/usr/local \
--with-freetype-dir --with-jpeg-dir \
--with-png-dir --with-ttf \
--enable-zip --with-zlib \
--with-gd \
--disable-rpath --enable-discard-path \
--enable-safe-mode --enable-bcmath \
--enable-shmop --enable-sysvsem \
--with-curl --with-curlwrappers \
--enable-fastcgi --enable-force-cgi-redirect \
--enable-mbstring --with-mcrypt \
--disable-ipv6 \
--enable-static \
--enable-maintainer-zts \
--enable-zend-multibyte \
--enable-sockets \
--enable-soap \
--with-openssl \
--without-sqlite --without-pdo-sqlite

则会提示
configure: error: libjpeg.(a|so) not found.

通过rpm -qa |grep libjpeg是有安装的

解决办法是在configure里加入

--with-libdir=lib64

修改后是这样

CHOST="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -O2 -pipe" CXXFLAGS="-march=nocona -O2 -pipe" \
./configure --prefix=/usr/local/php \
--with-libdir=lib64 \
--with-config-file-path=/etc \
--with-mysql=/usr/loca/mysql --with-pdo-mysql=/usr/local/mysql/bin/mysql_config \
--with-mysqli=/usr/local/mysql/bin/mysql_config \
--with-iconv-dir=/usr/local \
--with-freetype-dir --with-jpeg-dir \
--with-png-dir --with-ttf \
--enable-zip --with-zlib \
--with-gd \
--disable-rpath --enable-discard-path \
--enable-safe-mode --enable-bcmath \
--enable-shmop --enable-sysvsem \
--with-curl --with-curlwrappers \
--enable-fastcgi --enable-force-cgi-redirect \
--enable-mbstring --with-mcrypt \
--disable-ipv6 \
--enable-static \
--enable-maintainer-zts \
--enable-zend-multibyte \
--enable-sockets \
--enable-soap \
--with-openssl \
--without-sqlite --without-pdo-sqlite

不过,由于我们MySQL不是用rpm包装的,是自编译安装在/usr/local/mysql
如果使用以上configure参数,则会提示

configure: error: Cannot find libmysqlclient_r under /usr/local/mysql/.
Note that the MySQL client library is not bundled anymore!

此时做个修改

ln -s /usr/local/mysql/lib /usr/local/mysql/lib64

这样就可以configure通过了,然后就make && make install吧

题外话,如果要在CentOS6 64位上yum安装32位的软件
echo 'multilib_policy=all' >> /etc/yum.conf
就可以了

3、安装打包MySQL时依赖的包

yum -y install perl readline-devel gcc-c++ ncurses-devel zlib-devel libtool automake autoconf time ccache bison

4、安装percona的源代码
rpm -ivh Percona-Server-51-5.1.58-rel12.9.271.rhel6.src.rpm

安装了2个文件，它们的位置是
/root/rpmbuild/SOURCES/Percona-Server-5.1.58.tar.gz
/root/rpmbuild/SPECS/percona-server.spec

5、修改percona-server.spec
加入我们自己的编译参数
vi percona-server.spec
将
# The --enable-assembler simply does nothing on systems that does not
# support assembler speedups.
和
%if %{YASSL_BUILD}
之间的一段修改成这样

# The --enable-assembler simply does nothing on systems that does not
# support assembler speedups.
sh -c  "CFLAGS=\"$CFLAGS\" \
        CXXFLAGS=\"$CXXFLAGS\" \
        AM_CPPFLAGS=\"$AM_CPPFLAGS\" \
        LDFLAGS=\"$LDFLAGS\" \
        ./configure \
            $* \
            --with-comment=MC-DB \
            --with-server-suffix=-MC-DB-Server \
            --with-charset=utf8 \
            --with-plugins=blackhole,csv,innodb_plugin \
            --enable-assembler \
            --enable-local-infile \
            --with-mysqld-user=%{mysqld_user} \
            --with-unix-socket-path=/tmp/mysql.sock \
            --with-pic \
            -prefix=/usr \
            --with-extra-charsets=gbk,gb2312,utf8 \
            --without-debug \
            --with-pthread \
            --enable-thread-safe-client \
            --with-client-ldflags=-all-static \
            --without-ndb-debug \
%if %{YASSL_BUILD}

保存退出

6、定义在打包过程中不进行测试
export MYSQL_RPMBUILD_TEST="no"

7、开始打包
cd /root/rpmbuild/SPECS/
rpmbuild -bb percona-server.spec
等待一段时间就可以看到编译好的软件包
/root/rpmbuild/RPMS/x86_64

Percona-Server-client-51-5.1.58-rel12.9.rhel6.x86_64.rpm
Percona-Server-devel-51-5.1.58-rel12.9.rhel6.x86_64.rpm
Percona-Server-server-51-5.1.58-rel12.9.rhel6.x86_64.rpm
Percona-Server-shared-51-5.1.58-rel12.9.rhel6.x86_64.rpm
Percona-Server-test-51-5.1.58-rel12.9.rhel6.x86_64.rpm

7、安装顺序
先安装这个
Percona-Server-shared-51-5.1.58-rel12.9.rhel6.x86_64.rpm
再安装其他软件包
8、已知问题：
无法打包为一个包
无法将所有问题安装到一个目录，例如我们之前一直安装的目录/usr/local/mysql

9、题外话
一般MySQL源代码包都有包含打包所需要的spec文件，一般存放在support-files/下

方法1：
先查询
yum list |grep libjpeg
指定安装32位版
yum install libjpeg.i686

方法2：
这是一种一劳永逸的方法
echo 'multilib_policy=all' >> /etc/yum.conf
以下命令会同时安装32位和64位版
yum install libjpeg 

参考资料：http://grokbase.com/t/centos.org/centos/2011/07/centos-centos6-installing-32bit-and-64bit-rpms-via-the-installer/133tcfqf5pag5uldm62ygv34psia