Q: 启动apache报错 [warn] module php5_module is already loaded, skipping

一般出现这种问题有两种情况：
1.在apache安装目录conf下httpd.conf里可能重复了一行LoadModule php5_module modules/libphp5.so,删除重复的行就行。
 
2.或者在其他的conf文件中加载load了,如下yum安装的httpd，conf.d/php.conf里
<IfModule prefork.c>
LoadModule php5_module modules/libphp5.so
</IfModule>

Q: centos 6.2 更新报错解决 yum you could try using skip broken to work around the problem

 
# yum update
Loaded plugins: aliases, changelog, downloadonly, kabi, presto, refresh-
: packagekit, security, tmprepo, verify, versionlock
Loading support for Red Hat kernel ABI
adobe-linux-x86_64 | 951 B 00:00
google-chrome | 951 B 00:00 ...
sl | 3.2 kB 00:00
sl-security | 1.9 kB 00:00
Setting up Update Process
Resolving Dependencies
--> Running transaction check
---> Package python-qpid.noarch 0:0.12-1.el6 will be updated
---> Package python-qpid.noarch 0:0.14-11.el6_3 will be an update
---> Package python-qpid-qmf.x86_64 0:0.12-6.el6 will be updated
---> Package python-qpid-qmf.x86_64 0:0.14-14.el6_3 will be an update
---> Package qpid-cpp-client.x86_64 0:0.12-6.el6 will be updated
--> Processing Dependency: libqpidclient.so.5()(64bit) for package: matahari-agent-lib-0.4.4-11.el6.x86_64
--> Processing Dependency: libqpidclient.so.5()(64bit) for package: matahari-network-0.4.4-11.el6.x86_64
--> Processing Dependency: libqpidclient.so.5()(64bit) for package: matahari-sysconfig-0.4.4-11.el6.x86_64
--> Processing Dependency: libqpidclient.so.5()(64bit) for package: matahari-service-0.4.4-11.el6.x86_64
--> Processing Dependency: libqpidclient.so.5()(64bit) for package: matahari-host-0.4.4-11.el6.x86_64
--> Processing Dependency: libqpidcommon.so.5()(64bit) for package: matahari-network-0.4.4-11.el6.x86_64
--> Processing Dependency: libqpidcommon.so.5()(64bit) for package: matahari-host-0.4.4-11.el6.x86_64
--> Processing Dependency: libqpidcommon.so.5()(64bit) for package: matahari-sysconfig-0.4.4-11.el6.x86_64
--> Processing Dependency: libqpidcommon.so.5()(64bit) for package: libvirt-qmf-0.3.0-4.el6.x86_64
--> Processing Dependency: libqpidcommon.so.5()(64bit) for package: matahari-agent-lib-0.4.4-11.el6.x86_64
--> Processing Dependency: libqpidcommon.so.5()(64bit) for package: matahari-service-0.4.4-11.el6.x86_64
---> Package qpid-cpp-client.x86_64 0:0.14-22.el6_3 will be an update
---> Package qpid-cpp-client-ssl.x86_64 0:0.12-6.el6 will be updated
---> Package qpid-cpp-client-ssl.x86_64 0:0.14-22.el6_3 will be an update
---> Package qpid-cpp-server.x86_64 0:0.12-6.el6 will be updated
---> Package qpid-cpp-server.x86_64 0:0.14-22.el6_3 will be an update
---> Package qpid-cpp-server-ssl.x86_64 0:0.12-6.el6 will be updated
---> Package qpid-cpp-server-ssl.x86_64 0:0.14-22.el6_3 will be an update
---> Package qpid-qmf.x86_64 0:0.12-6.el6 will be updated
---> Package qpid-qmf.x86_64 0:0.14-14.el6_3 will be an update
---> Package qpid-tools.noarch 0:0.12-2.el6 will be updated
---> Package qpid-tools.noarch 0:0.14-6.el6_3 will be an update
---> Package ruby-qpid-qmf.x86_64 0:0.12-6.el6 will be updated
---> Package ruby-qpid-qmf.x86_64 0:0.14-14.el6_3 will be an update
--> Finished Dependency Resolution
Error: Package: matahari-host-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
Requires: libqpidclient.so.5()(64bit)
Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
libqpidclient.so.5()(64bit)
Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)
Not found
Error: Package: matahari-sysconfig-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
Requires: libqpidclient.so.5()(64bit)
Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
libqpidclient.so.5()(64bit)
Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)
Not found
Error: Package: matahari-service-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
Requires: libqpidcommon.so.5()(64bit)
Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
libqpidcommon.so.5()(64bit)
Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)
Not found
Error: Package: matahari-network-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
Requires: libqpidclient.so.5()(64bit)
Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
libqpidclient.so.5()(64bit)
Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)
Not found
Error: Package: matahari-sysconfig-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
Requires: libqpidcommon.so.5()(64bit)
Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
libqpidcommon.so.5()(64bit)
Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)
Not found
Error: Package: matahari-host-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
Requires: libqpidcommon.so.5()(64bit)
Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
libqpidcommon.so.5()(64bit)
Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)
Not found
Error: Package: libvirt-qmf-0.3.0-4.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
Requires: libqpidcommon.so.5()(64bit)
Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
libqpidcommon.so.5()(64bit)
Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)
Not found
Error: Package: matahari-agent-lib-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
Requires: libqpidcommon.so.5()(64bit)
Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
libqpidcommon.so.5()(64bit)
Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)
Not found
Error: Package: matahari-network-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
Requires: libqpidcommon.so.5()(64bit)
Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
libqpidcommon.so.5()(64bit)
Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)
Not found
Error: Package: matahari-agent-lib-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
Requires: libqpidclient.so.5()(64bit)
Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
libqpidclient.so.5()(64bit)
Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)
Not found
Error: Package: matahari-service-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
Requires: libqpidclient.so.5()(64bit)
Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)
libqpidclient.so.5()(64bit)
Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)
Not found
You could try using --skip-broken to work around the problem
** Found 1 pre-existing rpmdb problem(s), 'yum check' output follows:
libvpx-1.0.0-1.el6.x86_64 is a duplicate with libvpx-0.9.0-8.el6_0.x86_64上述更新错误，解决方法如下：
yum remove matahari*执行完后，然后执行yun update 更新，这样应该就可以了。

Q: Cannot load /…/libphp5.so into server: /…/libphp5.so: undefined symbol: _efree

此错误是由于重装php时，没有关闭apache。解决方法：调转到php安装目录，执行“make clean”，然后从新安装php，记得安装之前关闭apache。

Q: apache启动报错(98)Address already in use: make_sock: could not bind to address :80

端口占用情况：
#netstat -lnp|grep 80
#ps 端口号为80的进程
#kill -9 端口号为80的进程(可能进程不止一个)

Q: 从源码安装apache2，遇到错误:cannot install `libaprutil-1.la'

这是由于configure过一次，没有清理干净，需要清理。可以删除掉源码目录，重新解压源码，重新安装，或者make clean. 查看全部

<IfModule prefork.c>

LoadModule php5_module modules/libphp5.so

</IfModule>

# yum update

Loaded plugins: aliases, changelog, downloadonly, kabi, presto, refresh-

: packagekit, security, tmprepo, verify, versionlock

Loading support for Red Hat kernel ABI

adobe-linux-x86_64 | 951 B 00:00

google-chrome | 951 B 00:00 ...

sl | 3.2 kB 00:00

sl-security | 1.9 kB 00:00

Setting up Update Process

Resolving Dependencies

--> Running transaction check

---> Package python-qpid.noarch 0:0.12-1.el6 will be updated

---> Package python-qpid.noarch 0:0.14-11.el6_3 will be an update

---> Package python-qpid-qmf.x86_64 0:0.12-6.el6 will be updated

---> Package python-qpid-qmf.x86_64 0:0.14-14.el6_3 will be an update

---> Package qpid-cpp-client.x86_64 0:0.12-6.el6 will be updated

--> Processing Dependency: libqpidclient.so.5()(64bit) for package: matahari-agent-lib-0.4.4-11.el6.x86_64

--> Processing Dependency: libqpidclient.so.5()(64bit) for package: matahari-network-0.4.4-11.el6.x86_64

--> Processing Dependency: libqpidclient.so.5()(64bit) for package: matahari-sysconfig-0.4.4-11.el6.x86_64

--> Processing Dependency: libqpidclient.so.5()(64bit) for package: matahari-service-0.4.4-11.el6.x86_64

--> Processing Dependency: libqpidclient.so.5()(64bit) for package: matahari-host-0.4.4-11.el6.x86_64

--> Processing Dependency: libqpidcommon.so.5()(64bit) for package: matahari-network-0.4.4-11.el6.x86_64

--> Processing Dependency: libqpidcommon.so.5()(64bit) for package: matahari-host-0.4.4-11.el6.x86_64

--> Processing Dependency: libqpidcommon.so.5()(64bit) for package: matahari-sysconfig-0.4.4-11.el6.x86_64

--> Processing Dependency: libqpidcommon.so.5()(64bit) for package: libvirt-qmf-0.3.0-4.el6.x86_64

--> Processing Dependency: libqpidcommon.so.5()(64bit) for package: matahari-agent-lib-0.4.4-11.el6.x86_64

--> Processing Dependency: libqpidcommon.so.5()(64bit) for package: matahari-service-0.4.4-11.el6.x86_64

---> Package qpid-cpp-client.x86_64 0:0.14-22.el6_3 will be an update

---> Package qpid-cpp-client-ssl.x86_64 0:0.12-6.el6 will be updated

---> Package qpid-cpp-client-ssl.x86_64 0:0.14-22.el6_3 will be an update

---> Package qpid-cpp-server.x86_64 0:0.12-6.el6 will be updated

---> Package qpid-cpp-server.x86_64 0:0.14-22.el6_3 will be an update

---> Package qpid-cpp-server-ssl.x86_64 0:0.12-6.el6 will be updated

---> Package qpid-cpp-server-ssl.x86_64 0:0.14-22.el6_3 will be an update

---> Package qpid-qmf.x86_64 0:0.12-6.el6 will be updated

---> Package qpid-qmf.x86_64 0:0.14-14.el6_3 will be an update

---> Package qpid-tools.noarch 0:0.12-2.el6 will be updated

---> Package qpid-tools.noarch 0:0.14-6.el6_3 will be an update

---> Package ruby-qpid-qmf.x86_64 0:0.12-6.el6 will be updated

---> Package ruby-qpid-qmf.x86_64 0:0.14-14.el6_3 will be an update

--> Finished Dependency Resolution

Error: Package: matahari-host-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

Requires: libqpidclient.so.5()(64bit)

Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

libqpidclient.so.5()(64bit)

Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)

Not found

Error: Package: matahari-sysconfig-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

Requires: libqpidclient.so.5()(64bit)

Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

libqpidclient.so.5()(64bit)

Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)

Not found

Error: Package: matahari-service-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

Requires: libqpidcommon.so.5()(64bit)

Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

libqpidcommon.so.5()(64bit)

Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)

Not found

Error: Package: matahari-network-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

Requires: libqpidclient.so.5()(64bit)

Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

libqpidclient.so.5()(64bit)

Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)

Not found

Error: Package: matahari-sysconfig-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

Requires: libqpidcommon.so.5()(64bit)

Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

libqpidcommon.so.5()(64bit)

Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)

Not found

Error: Package: matahari-host-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

Requires: libqpidcommon.so.5()(64bit)

Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

libqpidcommon.so.5()(64bit)

Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)

Not found

Error: Package: libvirt-qmf-0.3.0-4.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

Requires: libqpidcommon.so.5()(64bit)

Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

libqpidcommon.so.5()(64bit)

Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)

Not found

Error: Package: matahari-agent-lib-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

Requires: libqpidcommon.so.5()(64bit)

Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

libqpidcommon.so.5()(64bit)

Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)

Not found

Error: Package: matahari-network-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

Requires: libqpidcommon.so.5()(64bit)

Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

libqpidcommon.so.5()(64bit)

Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)

Not found

Error: Package: matahari-agent-lib-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

Requires: libqpidclient.so.5()(64bit)

Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

libqpidclient.so.5()(64bit)

Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)

Not found

Error: Package: matahari-service-0.4.4-11.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

Requires: libqpidclient.so.5()(64bit)

Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-ScientificLinux-201202061444.x86_64)

libqpidclient.so.5()(64bit)

Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (sl-security)

Not found

You could try using --skip-broken to work around the problem

** Found 1 pre-existing rpmdb problem(s), 'yum check' output follows:

libvpx-1.0.0-1.el6.x86_64 is a duplicate with libvpx-0.9.0-8.el6_0.x86_64

yum remove matahari*执行完后，然后执行yun update 更新，这样应该就可以了。

此错误是由于重装php时，没有关闭apache。解决方法：调转到php安装目录，执行“make clean”，然后从新安装php，记得安装之前关闭apache。

端口占用情况：

#netstat -lnp|grep 80

#ps 端口号为80的进程

#kill -9 端口号为80的进程(可能进程不止一个)