centos yum openldap centos7更换yum源
各位老铁们好，相信很多人对centos yum openldap都不是特别的了解，因此呢，今天就来为大家分享下关于centos yum openldap以及centos7更换yum源的问题知识，还望可以帮助大家，解决大家的一些困惑，下面一起来看看吧！
centos5 源码安装Nginx + mysql + apache + php的方法
主要依照的是张宴的一篇博文《》，安装的软件是也是从他提供的列表中下载，这里都是tar.gz格式，如果更希望是rpm格式的话，提供一个网址《》这里列出了比较完全的下载包。
我安装的系统：Centos5
1、下载；
我安装的下载来自张宴博文下的地址，下载保存的是home下自己目录的一个文件夹下：
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代码如下:
cd/home/xuxx/software
wget
wget
wget
wget
wget
wget
wget
wget
wget
wget
wget
wget
wget
wget
2、准备编译安装环境，需要编译源码用到gc++
建议如果是新安装的系统，使用yum upgrade更新下系统。
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代码如下:
sudo-s
LANG=C
yum-y install gcc gcc-c++ autoconf libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel libxml2 libxml2-devel zlib zlib-devel glibc glibc-devel
glib2 glib2-devel bzip2 bzip2-devel ncurses ncurses-devel curl curl-devel e2fsprogs e2fsprogs-devel krb5 krb5-devel libidn libidn-devel openssl openssl-devel
openldap openldap-devel nss_ldap openldap-clients openldap-servers
注意：这里所有的命令是一行的而不能有换行符，如果是copy的时候，注意要去处该换行符
确保安装成功！才能正确使用编译。
3、安装：
一、安装PHP 5.2.8（FastCGI模式）
1、编译安装PHP 5.2.8所需的支持库：
1］ libiconv库
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代码如下:
tar zxvf libiconv-1.13.tar.gz
cd libiconv-1.13/
./configure--prefix=/usr/local
make
make install
make clean
make distclean
cd../
make clean和make distclean都是删除安装过程中生成的缓存文件。当然如果你不介意放着也可以跳过这两步清理操作。
2］libmcrypt库
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代码如下:
tar zxvf libmcrypt-2.5.8.tar.gz
cd libmcrypt-2.5.8/
./configure
make
make install
make clean
make distclean
/sbin/ldconfig
cd libltdl/
./configure--enable-ltdl-install
make
make install
make clean
make distclean
cd
3] mhash库
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代码如下:
tar zxvf mhash-0.9.9.9.tar.gz
cd mhash-0.9.9.9/
./configure
make
make install
cd../
4］mcrypt库
注意：因为该库和libmcrypt有依赖性，所以在安装前必须知道libmcrypt，否则的话会出现：
错误
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代码如下:
checking for libmcrypt– version= 2.5.0…
***‘libmcrypt-config–version’ returned 2.4.0, but LIBMCRYPT(2.5.8)
*** was found! If libmcrypt-config was correct, then it is best
*** to remove the old version of LIBMCRYPT. You may also be able to fix the error
*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing
***/etc/ld.so.conf. Make sure you have run ldconfig if that is
*** required on your system.
*** If libmcrypt-config was wrong, set the environment variable LIBMCRYPT_CONFIG
*** to point to the correct copy of libmcrypt-config, and remove the file config.cache
*** before re-running configure
configure: error:*** libmcrypt was not found
是因为path的问题，所以执行：
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代码如下:
ln-s/usr/local/lib/libmcrypt.la/usr/lib/libmcrypt.la
ln-s/usr/local/lib/libmcrypt.so/usr/lib/libmcrypt.so
ln-s/usr/local/lib/libmcrypt.so.4/usr/lib/libmcrypt.so.4
ln-s/usr/local/lib/libmcrypt.so.4.4.8/usr/lib/libmcrypt.so.4.4.8
ln-s/usr/local/lib/libmhash.a/usr/lib/libmhash.a
ln-s/usr/local/lib/libmhash.la/usr/lib/libmhash.la
ln-s/usr/local/lib/libmhash.so/usr/lib/libmhash.so
ln-s/usr/local/lib/libmhash.so.2/usr/lib/libmhash.so.2
ln-s/usr/local/lib/libmhash.so.2.0.1/usr/lib/libmhash.so.2.0.1
ln-s/usr/local/bin/libmcrypt-config/usr/bin/libmcrypt-config
然后再安装：
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代码如下:
tar zxvf mcrypt-2.6.8.tar.gz
cd mcrypt-2.6.8/
/sbin/ldconfig
./configure
make
make install
cd../
二、安装mysql
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代码如下:
/usr/sbin/groupadd mysql
/usr/sbin/useradd-g mysql xxx
unzip mysql-5.1.33.zip
cd mysql-5.1.33/
./configure--prefix=/usr/local/webserver/mysql/--enable-assembler--with-extra-charsets=complex--enable-thread-safe-client--with-big-tables
--with-readline--with-ssl--with-embedded-server--enable-local-infile--with-plugins=innobase
make
make install
make clean
make distclean
chmod+w/usr/local/webserver/mysql
chown-R xxx:mysql/usr/local/webserver/mysql
cp support-files/my-medium.cnf.sh/usr/local/webserver/mysql/my.cnf
cd../
注意：这里编译./configure命令是一行的而不能有换行符，如果是copy的时候，注意要去处该换行符
在最后一步拷贝的时候，我安装完在support-files下没有my-medium.cnf而只有my-medium.cnf.sh所以将这个文件拷贝过去。
＠张宴原文：
附：以下为附加步骤，如果你想在这台服务器上运行MySQL数据库，则执行以下两步。如果你只是希望让PHP支持MySQL扩展库，能够连接其他服务器上的MySQL数据库，那么，以下两步无需执行。
①、以xxx用户帐号的身份建立数据表：
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代码如下:
/usr/local/webserver/mysql/bin/mysql_install_db--basedir=/usr/local/webserver/mysql--datadir=/usr/local/webserver/mysql/data--user=xxx
②、启动MySQL（最后的表示在后台运行）
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代码如下:
/bin/sh/usr/local/webserver/mysql/bin/mysqld_safe--defaults-file=/usr/local/webserver/mysql/my.cnf
3、编译安装PHP（FastCGI模式）
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代码如下:
tar zxvf php-5.2.8.tar.gz
gzip-cd php-5.2.8-fpm-0.5.10.diff.gz| patch-d php-5.2.8-p1
cd php-5.2.8/
./configure--prefix=/usr/local/webserver/php--with-config-file-path=/usr/local/webserver/php/etc--with-mysql=/usr/local/webserver/mysql
--with-mysqli=/usr/local/webserver/mysql/bin/mysql_config--with-iconv-dir=/usr/local--with-freetype-dir--with-jpeg-dir--with-png-dir--with-zlib
--with-libxml-dir=/usr--enable-xml--disable-rpath--enable-discard-path--enable-safe-mode--enable-bcmath--enable-shmop--enable-sysvsem
--enable-inline-optimization--with-curl--with-curlwrappers--enable-mbregex--enable-fastcgi--enable-fpm--enable-force-cgi-redirect
--enable-mbstring--with-mcrypt--with-gd--enable-gd-native-ttf--with-openssl--with-mhash--enable-pcntl--enable-sockets--with-ldap
--with-ldap-sasl
make ZEND_EXTRA_LIBS='-liconv'
make install
cp php.ini-dist/usr/local/webserver/php/etc/php.ini
cd../
注意：这里./configure命令是一行的而不能有换行符，如果是copy的时候，注意要去处该换行符
4、编译安装PHP5扩展模块--可选安装
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代码如下:
tar zxvf memcache-2.2.5.tgz
cd memcache-2.2.5/
/usr/local/webserver/php/bin/phpize
./configure--with-php-config=/usr/local/webserver/php/bin/php-config
make
make install
make clean
make distclean
cd../
tar jxvf eaccelerator-0.9.5.3.tar.bz2
cd eaccelerator-0.9.5.3/
/usr/local/webserver/php/bin/phpize
./configure--enable-eaccelerator=shared--with-php-config=/usr/local/webserver/php/bin/php-config
make
make install
make clean
make distclean
cd../
tar zxvf PDO_MYSQL-1.0.2.tgz
cd PDO_MYSQL-1.0.2/
/usr/local/webserver/php/bin/phpize
./configure--with-php-config=/usr/local/webserver/php/bin/php-config--with-pdo-mysql=/usr/local/webserver/mysql
make
make install
make clean
make distclean
cd../
tar zxvf ImageMagick.tar.gz
cd ImageMagick-6.5.1-2/
./configure
make
make install
make clean
make distclean
cd../
tar zxvf imagick-2.2.2.tgz
cd imagick-2.2.2/
/usr/local/webserver/php/bin/phpize
./configure--with-php-config=/usr/local/webserver/php/bin/php-config
make
make install
make clean
make distclean
cd../
5、修改php.ini文件
STRONG手工修改：/STRONG查找/usr/local/webserver/php/etc/php.ini中的extension_dir="./"
修改为extension_dir="/usr/local/webserver/php/lib/php/extensions/no-debug-non-zts-20060613/"
并在此行后增加以下几行，然后保存：
extension="memcache.so"
extension="pdo_mysql.so"
extension="imagick.so"
再查找output_buffering= Off
修改为output_buffering= On
6、配置eAccelerator加速PHP：
mkdir-p/usr/local/webserver/eaccelerator_cache
vi/usr/local/webserver/php/etc/php.ini
按shift+g键跳到配置文件的最末尾，加上以下配置信息：
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代码如下:
[eaccelerator]
zend_extension="/usr/local/webserver/php/lib/php/extensions/no-debug-non-zts-20060613/eaccelerator.so"
eaccelerator.shm_size="128"
eaccelerator.cache_dir="/usr/local/webserver/eaccelerator_cache"
eaccelerator.enable="1"
eaccelerator.optimizer="1"
eaccelerator.check_mtime="1"
eaccelerator.debug="0"
eaccelerator.filter=""
eaccelerator.shm_max="0"
eaccelerator.shm_ttl="300"
eaccelerator.shm_prune_period="120"
eaccelerator.shm_only="0"
eaccelerator.compress="1"
eaccelerator.compress_level="9"
修改配置文件：
vi/etc/sysctl.conf
kernel.shmmax= 134217728
然后执行以下命令使配置生效：/sbin/sysctl-p
以下的步骤和张宴步骤中一样配置，不再赘诉
CentOS 7下OpenLDAP编译安装及配置
基于 CentOS-7-x86_64-1511环境下进行 OpenLDAP的编译安装及配置
1.下载并获取 OpenLDAP 2.4.44版本，Berkeley DB 5.1.29及 LDAP Administrtor软件。
2.安装前准备包括关闭 selinux、打开防火墙 tcp 389/ 636端口。
3.安装 BDB，需在解压包的 build_unix目录中编译安装。
4.更新 lib库以确保编译 openldap时能找到相关库。
5.完成 OpenLDAP编译安装，设置可执行命令。
6.配置主配置文件 slapd.conf，包括修改日志文件级别与路径、使用 mdb作为后端数据库、设置域名与管理员账户名等。
7.初始化 OpenLADP，启动服务，验证安装。
8.使用示例：创建管理员账号、具有部门属性的员工，验证账户。
9.使用 ldapadmin运行创建数据库文件，进行基本的 LDAP操作。
常见对象属性包括 commonName、surname等。
提供 ldif文件示例和文章永久更新链接。
Centos 搭建dhcp服务器
dhcp是动态主机配置协议，使用udp协议，主要使用udp67和udp 68号端口
1.client端会发送dhcp discover广播包
2.dhcp服务器会回应dhcp offer广播包
3.client端会发送dhcp request广播包
4.dhcp服务器发送dhcp ack广播包
[root@mini~]# rpm-qa dhcp
[root@mini~]# cat/etc/centos-release
CentOS release 6.9(Final)
[root@mini~]# uname-r
2.6.32-696.el6.i686
[root@mini~]# uname-m
i686
[root@mini~]# yum install-y dhcp
[root@mini~]# rpm-qa dhcp
dhcp-4.1.1-53.P1.el6.centos.1.i686
[root@mini~]# rpm-qc dhcp
/etc/dhcp/dhcpd.conf
/etc/dhcp/dhcpd6.conf
/etc/openldap/schema/dhcp.schema
/etc/portreserve/dhcpd
/etc/sysconfig/dhcpd
/etc/sysconfig/dhcpd6
/etc/sysconfig/dhcrelay
/etc/sysconfig/dhcrelay6
/var/lib/dhcpd/dhcpd.leases
/var/lib/dhcpd/dhcpd6.leases
[root@mini~]# cat/etc/dhcp/dhcpd.conf
#
# DHCP Server Configuration file.
# see/usr/share/doc/dhcp*/dhcpd.conf.sample
# see'man 5 dhcpd.conf'
#
查询dhcp sample文件(dhcpd.conf.sample文件为dhcp配置文件模板)
# rpm-ql dhcp
配置完成后的文件
[root@mini~]# cat/etc/dhcp/dhcpd.conf
#
# DHCP Server Configuration file.
# see/usr/share/doc/dhcp*/dhcpd.conf.sample
# see'man 5 dhcpd.conf'
#
# A slightly different configuration for an internal subnet.
subnet 172.16.1.0 netmask 255.255.255.0{
range 172.16.1.10 172.16.1.30;
option domain-name-servers mini.localdomain;
option domain-name"mini.localdomain";
option routers 172.16.1.1;
option broadcast-address 172.16.1.1;
default-lease-time 600;
max-lease-time 7200;
}
查看配置是否正确
[root@mini~]#/etc/init.d/dhcpd configtest
Syntax: OK
DHCP启动失败，并查询到如下报错信息(/var/log/messages)
Nov 6 06:37:24 mini dhcpd: No subnet declaration for eth0(192.168.28.139).
Nov 6 06:37:24 mini dhcpd:** Ignoring requests on eth0. If this is not what
Nov 6 06:37:24 mini dhcpd: you want, please write a subnet declaration
Nov 6 06:37:24 mini dhcpd: in your dhcpd.conf file for the network segment
Nov 6 06:37:24 mini dhcpd: to which interface eth0 is attached.**
Nov 6 06:37:24 mini dhcpd:
Nov 6 06:37:24 mini dhcpd:
Nov 6 06:37:24 mini dhcpd: Not configured to listen on any interfaces!
Nov 6 06:37:24 mini dhcpd:
Nov 6 06:37:24 mini dhcpd: This version of ISC DHCP is based on the release available
Nov 6 06:37:24 mini dhcpd: on ftp.isc.org. Features have been added and other changes
Nov 6 06:37:24 mini dhcpd: have been made to the base software release in order to make
Nov 6 06:37:24 mini dhcpd: it work better with this distribution.
Nov 6 06:37:24 mini dhcpd:
Nov 6 06:37:24 mini dhcpd: Please report for this software via the CentOS Bugs Database:
Nov 6 06:37:24 mini dhcpd:
Nov 6 06:37:24 mini dhcpd:
Nov 6 06:37:24 mini dhcpd: exiting.
解决办法:
这是因为DHCP程序发现没有“Not configured to listen on any interfaces”，只需要配置相应的IP到目标网卡中便可以解决这个问题。
[root@mini~]# ifconfig eth1 172.16.1.1/24
[root@mini~]#/etc/init.d/dhcpd start
Nov 6 06:43:11 mini dhcpd: Internet Systems Consortium DHCP Server 4.1.1-P1
Nov 6 06:43:11 mini dhcpd: Copyright 2004-2010 Internet Systems Consortium.
Nov 6 06:43:11 mini dhcpd: All rights reserved.
Nov 6 06:43:11 mini dhcpd: For info, please visit
Nov 6 06:43:11 mini dhcpd: Not searching LDAP since ldap-server, ldap-port and ldap-base-dn were not specified in the config file
Nov 6 06:43:11 mini dhcpd: Wrote 0 leases to leases file.
Nov 6 06:43:11 mini dhcpd: Listening on LPF/eth1/00:0c:29:c5:2b:7e/172.16.1.0/24
Nov 6 06:43:11 mini dhcpd: Sending on LPF/eth1/00:0c:29:c5:2b:7e/172.16.1.0/24
Nov 6 06:43:11 mini dhcpd:
Nov 6 06:43:11 mini dhcpd: No subnet declaration for eth0(192.168.28.139).
Nov 6 06:43:11 mini dhcpd:** Ignoring requests on eth0. If this is not what
Nov 6 06:43:11 mini dhcpd: you want, please write a subnet declaration
Nov 6 06:43:11 mini dhcpd: in your dhcpd.conf file for the network segment
Nov 6 06:43:11 mini dhcpd: to which interface eth0 is attached.**
Nov 6 06:43:11 mini dhcpd:
Nov 6 06:43:11 mini dhcpd: Sending on Socket/fallback/fallback-net
[root@mini~]# cat/var/lib/dhcpd/dhcpd.leases
注意：如果Linux开启了防火墙，那么需要对UDP 67和UDP 68放行。或者直接将放火墙关闭
