CentOS64+Qt+Mysql+ftp+无密钥传输的配置

有段日了没装系统了..呵呵..

命令忘的都差不多了..记录一下.

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# 1. CentOS 配置yum源

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# 挂载两个ISO

将第一个盘的ISO1文件拷贝到ISO2中,进行挂载.

[base-centos]

name=CentOS

baseurl=file:///mnt/iso

gpgcheck=0

enabled=1

# 安装gcc,java

yum intall -y gcc*

yum intall -y java*

# 关闭防火墙

关闭：

chkconfig iptables off

selinuxenabled 0

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# 2. 安装MYSQL-5.1.66

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# 配置好yum源后,yum install -y mysql*

# 启动mysql

service mysqld start

mysql -h192.168.2.18 -uroot -p111

# 查看监听端口

netstat -tnlp |grep :3306

# 查看库

show databases;

# mysql的远程连接

# 在[mysqld]的段中加上一句：skip-grant-tables

[mysqld]

datadir=/var/lib/mysql

socket=/var/lib/mysql/mysql.sock

skip-name-resolve

skip-grant-tables

目的是为了：

跳过MySQL的访问控制，任何人都可以在控制台以管理员的身份进入MySQL数据库。

需要注意的是在修改完密码以后要把MySQL服务器停掉重新启动才会生效

重启mysql服务!

如果你想允许用户myuser从ip为192.168.1.3的主机连接到mysql服务器，并使用mypassword作为密码

GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'192.168.1.3' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;

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# 3. 编译安装Qt-4.5.2

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## Qt安装方法

解压安装包,并移动到 /user/locale/下面.

./configure -debug-and-release -fast -qt-sql-mysql -no-qt3support -no-webkit -no-opengl -no-openssl

# 配置结果

注意:Qt默认只支持PNG图片,

如果有JPEG或其它格式,

需要去Qt的安装目录

plugins\imageformats

下拷贝图片插件>

Debug ............... no

Qt 3 compatibility .. no

QtDBus module ....... no

QtScriptTools module yes

QtXmlPatterns module yes

Phonon module ....... no

SVG module .......... yes

WebKit module ....... no

STL support ......... yes

PCH support ......... yes

MMX/3DNOW/SSE/SSE2.. yes/yes/yes/yes

Graphics System ..... default

IPv6 support ........ yes

IPv6 ifname support . yes

getaddrinfo support . yes

getifaddrs support .. yes

Accessibility ....... yes

NIS support ......... yes

CUPS support ........ no

Iconv support ....... yes

Glib support ........ no

GStreamer support ... no

Large File support .. yes

GIF support ......... plugin

TIFF support ........ plugin (qt)

JPEG support ........ plugin (qt)

PNG support ......... yes (qt)

MNG support ......... plugin (qt)

zlib support ........ system

Session management .. yes

OpenGL support ...... no

NAS sound support ... no

XShape support ...... yes

Xinerama support .... runtime

Xcursor support ..... runtime

Xfixes support ...... runtime

Xrandr support ...... runtime

Xrender support ..... yes

Xi support .......... runtime

MIT-SHM support ..... yes

FontConfig support .. yes

XKB Support ......... yes

immodule support .... yes

GTK theme support ... no

MySQL support ....... qt

SQLite support ...... plugin (qt)

OpenSSL support ..... no

## 编译安装

gmake gmake install

## 修改环境变量

可以将环境变量添加到 .bashrc 或 .bash_profile 或 /etc/bashrc 或 /etc/profile

它们的区别是:

1. /etc/profile：对所有用户生效,当用户第一次登录时,该文件被执行.

2. /etc/bashrc：对所有用户生效,为每一个运行bash shell的用户执行此文件

3. ~/.bash_profile：仅会对当前用户有效,当用户登录时,该文件仅仅执行一次

4. ~/.bashrc：仅会对当前用户有效,当登录时以及每次打开新的shell时,该该文件被读取

QTDIR=/usr/local/qt-4.5.2

PATH=$QTDIR/bin:$PATH

LD_LIBRARY_PATH=$QTDIR/lib:$LD_LIBRARY_PATH

QMAKESPEC=$QTDIR/mkspecs/linux-g++-64

export QTDIR

export PATH

export LD_LIBRARY_PATH

export QMAKESPEC

## 查看Qt支持的图片类型

可以运行下面的函数查看:QImageReader::supportedImageFormats

QList QImageReader::supportedImageFormats () [static]

Returns the list of image formats supported by QImageReader.

By default, Qt can read the following formats:

Format Description

BMP Windows Bitmap

GIF Graphic Interchange Format (optional)

JPG Joint Photographic Experts Group

JPEG Joint Photographic Experts Group

MNG Multiple-image Network Graphics

PNG Portable Network Graphics

PBM Portable Bitmap

PGM Portable Graymap

PPM Portable Pixmap

TIFF Tagged Image File Format

XBM X11 Bitmap

XPM X11 Pixmap

SVG Scalable Vector Graphics

TGA Targa Image Format

Reading and writing SVG files is supported through Qt's SVG Module.

TGA support only extends to reading non-RLE compressed files. In particular calls to capabilities for the tga plugin returns only QImageIOPlugin::CanRead, not QImageIOPlugin::CanWrite.

To configure Qt with GIF support, pass -qt-gif to the configure script or check the appropriate option in the graphical installer.

Note that the QApplication instance must be created before this function is called.

See also setFormat(), QImageWriter::supportedImageFormats(), and QImageIOPlugin.

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# 4. 使用Qt连接Mysql

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#include

#include

#include

#include

using namespace std;

int main(int argc, char *argv[])

{

QApplication app(argc, argv);

QSqlDatabase db = QSqlDatabase::addDatabase(QMYSQL);

db.setHostName(localhost);

db.setDatabaseName(mydb);

db.setUserName(username);

db.setPassword(password);

db.open();

QSqlQuery query;

query.exec(create table hello(id bigint not null auto_increment,name varchar(255),age bigint,primary key (id)));

query.exec(insert into hello(name, age) values('xiaoxi', 18));

query.exec(insert into hello(name, age) values('xiaonan', 19));

query.exec(insert into hello(name, age) values('xiaobei', 20));

query.exec(insert into hello(name, age) values('xiaodong', 21));

QSqlQueryModel *model = new QSqlQueryModel;

model->setQuery(select * from hello);

model->setHeaderData(0, Qt::Horizontal, id);

model->setHeaderData(1, Qt::Horizontal, name);

model->setHeaderData(2, Qt::Horizontal, age);

QTableView *view = new QTableView;

view->setWindowTitle(QSqlQueryModel);

view->setModel(model);

view->show();

db.close();

return app.exec();

}

编译：

xhy@xhy-desktop:~$ qmake -project

xhy@xhy-desktop:~$ qmake

一定别忘了在工程的.pro文件里加上下面一行:

QT += sql

xhy@xhy-desktop:~$make

xhy@xhy-desktop:~$./mysql

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# 5. CentOS配置sftp

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sftp是ssh内含的协议，只要sshd服务器启动了，它就可用.

sftp root@192.168.2.18

>ls

>get ...

>put ...

如果sshd服务没有默认启动:

chkconfig sshd on

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# 6. CentOS配置无密钥传输

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# 举例说明:

[root@centos6-64 .ssh]# pwd

/root/.ssh

[root@centos6-64 .ssh]# ssh-keygen

Generating public/private rsa key pair.

Enter file in which to save the key (/root/.ssh/id_rsa):

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in /root/.ssh/id_rsa.

Your public key has been saved in /root/.ssh/id_rsa.pub.

The key fingerprint is:

d6:2a:df:0b:46:3d:22:da:5b:24:b2:da:78:01:f3:c4 root@centos6-64

The key's randomart image is:

+--[ RSA 2048]----+

| |

| |

| . |

| o E o |

| =. o S + |

| o= * o . |

| o.o = |

| +. * o |

| o.. . . o. |

+-----------------+

[root@centos6-64 .ssh]# ls -lrt

total 16

-rw-r--r-- 1 root root 394 Nov 18 16:18 known_hosts

-rw-r--r-- 1 root root 394 Nov 18 22:32 authorized_keys

-rw-r--r-- 1 root root 397 Nov 18 22:33 id_rsa.pub

-rw------- 1 root root 1675 Nov 18 22:33 id_rsa

[root@centos6-64 .ssh]# scp id_rsa.pub 192.168.2.16:~/.ssh/authorized_keys

root@192.168.2.16's password:

id_rsa.pub 100% 397 0.4KB/s 00:00

[root@centos6-64 .ssh]# ssh 192.168.2.16

Last login: Mon Nov 18 22:16:16 2013 from 192.168.2.221

[root@red6-64 ~]#