CentOS64+Qt+Mysql+ftp+無密鑰傳輸?shù)呐渲?/h1>

作者： 時(shí)間：2018-09-07 來源：網(wǎng)絡(luò)

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這兩天單位要部一個(gè)環(huán)境.CentOS64+Qt+Mysql+ftp+無密鑰傳輸的.

本文引用地址：http://2s4d.com/article/201809/388630.htm

有段日了沒裝系統(tǒng)了..呵呵..

命令忘的都差不多了..記錄一下.

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# 1. CentOS 配置yum源

############################################################################################

# 掛載兩個(gè)ISO

將第一個(gè)盤的ISO1文件拷貝到ISO2中,進(jìn)行掛載.

[base-centos]

name=CentOS

baseurl=file:///mnt/iso

gpgcheck=0

enabled=1

# 安裝gcc,java

yum intall -y gcc*

yum intall -y java*

# 關(guān)閉防火墻

關(guān)閉：

chkconfig iptables off

selinuxenabled 0

############################################################################################

# 2. 安裝MYSQL-5.1.66

############################################################################################

# 配置好yum源后,yum install -y mysql*

# 啟動(dòng)mysql

service mysqld start

mysql -h192.168.2.18 -uroot -p111

# 查看監(jiān)聽端口

netstat -tnlp |grep :3306

# 查看庫

show databases;

# mysql的遠(yuǎn)程連接

# 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

目的是為了：

跳過MySQL的訪問控制，任何人都可以在控制臺(tái)以管理員的身份進(jìn)入MySQL數(shù)據(jù)庫。

需要注意的是在修改完密碼以后要把MySQL服務(wù)器停掉重新啟動(dòng)才會(huì)生效

重啟mysql服務(wù)!

如果你想允許用戶myuser從ip為192.168.1.3的主機(jī)連接到mysql服務(wù)器，并使用mypassword作為密碼

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

############################################################################################

# 3. 編譯安裝Qt-4.5.2

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## Qt安裝方法

解壓安裝包,并移動(dòng)到 /user/locale/下面.

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

# 配置結(jié)果

注意:Qt默認(rèn)只支持PNG圖片,

如果有JPEG或其它格式,

需要去Qt的安裝目錄

pluginsimageformats

下拷貝圖片插件>

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

## 編譯安裝

gmake gmake install

## 修改環(huán)境變量

可以將環(huán)境變量添加到 .bashrc 或 .bash_profile 或 /etc/bashrc 或 /etc/profile

它們的區(qū)別是:

1. /etc/profile：對(duì)所有用戶生效,當(dāng)用戶第一次登錄時(shí),該文件被執(zhí)行.

2. /etc/bashrc：對(duì)所有用戶生效,為每一個(gè)運(yùn)行bash shell的用戶執(zhí)行此文件

3. ~/.bash_profile：僅會(huì)對(duì)當(dāng)前用戶有效,當(dāng)用戶登錄時(shí),該文件僅僅執(zhí)行一次

4. ~/.bashrc：僅會(huì)對(duì)當(dāng)前用戶有效,當(dāng)?shù)卿洉r(shí)以及每次打開新的shell時(shí),該該文件被讀取

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支持的圖片類型

可以運(yùn)行下面的函數(shù)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.

############################################################################################

# 4. 使用Qt連接Mysql

############################################################################################

#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();

}

編譯：

xhy@xhy-desktop:~$ qmake -project

xhy@xhy-desktop:~$ qmake

一定別忘了在工程的.pro文件里加上下面一行:

QT += sql

xhy@xhy-desktop:~$make

xhy@xhy-desktop:~$./mysql

############################################################################################

# 5. CentOS配置sftp

############################################################################################

sftp是ssh內(nèi)含的協(xié)議，只要sshd服務(wù)器啟動(dòng)了，它就可用.

sftp root@192.168.2.18

>ls

>get ...

>put ...

如果sshd服務(wù)沒有默認(rèn)啟動(dòng):

chkconfig sshd on

############################################################################################

# 6. CentOS配置無密鑰傳輸

############################################################################################

# 舉例說明:

[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 ~]#