CentOS下搭建VNC/TEAMVIEW/SSH无密码登录

VNC

配置桌面

# 安装gnome桌面环境

yum groupinstall Desktop -y

# 安装中文语言支持包（可选）

yum groupinstall 'Chinese Support' -y

# 设置系统默认语言为中文（可选）

sed -i '/LANG/c\LANG="zh_CN.UTF-8"' /etc/sysconfig/i18n

source /etc/sysconfig/i18n

配置VNC Server

#安装vncserver包

yum install tigervnc tigervnc-server –y

#开启自启动

chkconfig vncserver on

你可以通过UltraVNC Viewer、TigerVNC Viewer或者RealVNC Viewer访问远程桌面了。

#确认vncserver包已经安装

[root@su172 ~]# rpm -qa | egrep -i vnc

tigervnc-server-1.1.0-16.el6.centos.x86_64

[root@su172 ~]#

#确认rpm包配置文件路径

[root@su172 ~]# rpm -ql tigervnc-server-1.1.0-16.el6.centos.x86_64

/etc/rc.d/init.d/vncserver

/etc/sysconfig/vncservers

/usr/bin/Xvnc

/usr/bin/vncconfig

/usr/bin/vncpasswd

/usr/bin/vncserver

/usr/bin/x0vncserver

/usr/share/man/man1/Xvnc.1.gz

/usr/share/man/man1/vncconfig.1.gz

/usr/share/man/man1/vncpasswd.1.gz

/usr/share/man/man1/vncserver.1.gz

/usr/share/man/man1/x0vncserver.1.gz

#root用户启动vncserver

#输入以root用户登录vncserver时的密码

[root@su172 ~]# vncserver

You will require a password to access your desktops.

Password:

Verify:

xauth: (stdin):1: bad display name "su172:1" in "add" command

New 'su172:1 (root)' desktop is su172:1

Creating default startup script /root/.vnc/xstartup

Starting applications specified in /root/.vnc/xstartup

Log file is /root/.vnc/su172:1.log

[root@su172 ~]# cd .vnc/

[root@su172 .vnc]# ls

passwd su172:1.log su172:1.pid xstartup

#普通用户启动vncserver

[appuser@su172 ~]$vncserver

#普通用户需要手工改密码

[appuser@su172 ~]$ vncpasswd

Password:

Verify:

#root验证

#普通user验证

#在Server端进行端口验证

#确认vcn进程

#kill vnc进程验证

#参考

http://www.centoscn.com/image-text/config/2014/1120/4151.html

Teamview

下载

wget https://download.teamviewer.com/download/teamviewer.i686.rpm

安装依赖包

yum install teamviewer_11.0.57095.i686.rpm -y

cd /opt/teamviewer/tv_bin

teamviewer --setup console #设置启动方式为控制台启动

teamviewer --daemon restart #重启teamview服务

teamviewer --info #查看teamview信息

teamviewer --passwd [PASSWD] #设置密码

teamviewer --help #查看帮助

ssh无密码登录

CentOS系统之间有可能需要无密码验证登录，方便拷贝东东，例如oracle rac安装时就有这个东西。所以提前了解很有必要。

node1执行以下步骤：

ssh-keygen -t rsa -P ''

scp /root/.ssh/id_rsa.pub root@192.168.36.182:/root/.ssh/id_rsa.pub181

node2执行以下步骤：

ssh-keygen -t rsa -P ''

scp id_rsa.pub root@192.168.36.181:/root/.ssh/id_rsa.pub182

node1执行：

cat id_rsa.pub182 >>authorized_keys

node2执行

cat id_rsa.pub181 >>authorized_keys

验证

node1验证

ssh 192.168.36.182

node2验证

ssh 192.168.36.181

扩展

-v跟踪

[root@su171 .ssh]# ssh -v 192.168.36.182

OpenSSH_5.3p1, OpenSSL 1.0.1e-fips 11 Feb 2013

debug1: Reading configuration data /etc/ssh/ssh_config

debug1: Applying options for *

debug1: Connecting to 192.168.36.182 [192.168.36.182] port 22.

debug1: Connection established.

debug1: permanently_set_uid: 0/0

debug1: identity file /root/.ssh/identity type -1

debug1: identity file /root/.ssh/identity-cert type -1

debug1: identity file /root/.ssh/id_rsa type 1

debug1: identity file /root/.ssh/id_rsa-cert type -1

debug1: identity file /root/.ssh/id_dsa type -1

debug1: identity file /root/.ssh/id_dsa-cert type -1

debug1: identity file /root/.ssh/id_ecdsa type -1

debug1: identity file /root/.ssh/id_ecdsa-cert type -1

debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3

debug1: match: OpenSSH_5.3 pat OpenSSH*

debug1: Enabling compatibility mode for protocol 2.0

debug1: Local version string SSH-2.0-OpenSSH_5.3

debug1: SSH2_MSG_KEXINIT sent

debug1: SSH2_MSG_KEXINIT received

debug1: kex: server->client aes128-ctr hmac-md5 none

debug1: kex: client->server aes128-ctr hmac-md5 none

debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent

debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP

debug1: SSH2_MSG_KEX_DH_GEX_INIT sent

debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY

debug1: Host '192.168.36.182' is known and matches the RSA host key.

debug1: Found key in /root/.ssh/known_hosts:1

debug1: ssh_rsa_verify: signature correct

debug1: SSH2_MSG_NEWKEYS sent

debug1: expecting SSH2_MSG_NEWKEYS

debug1: SSH2_MSG_NEWKEYS received

debug1: SSH2_MSG_SERVICE_REQUEST sent

debug1: SSH2_MSG_SERVICE_ACCEPT received

debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password

debug1: Next authentication method: gssapi-keyex

debug1: No valid Key exchange context

debug1: Next authentication method: gssapi-with-mic

debug1: Unspecified GSS failure. Minor code may provide more information

Cannot determine realm for numeric host address

debug1: Unspecified GSS failure. Minor code may provide more information

Cannot determine realm for numeric host address

debug1: Unspecified GSS failure. Minor code may provide more information

debug1: Unspecified GSS failure. Minor code may provide more information

Cannot determine realm for numeric host address

debug1: Next authentication method: publickey

debug1: Trying private key: /root/.ssh/identity

debug1: Offering public key: /root/.ssh/id_rsa

debug1: Server accepts key: pkalg ssh-rsa blen 277

debug1: read PEM private key done: type RSA

debug1: Authentication succeeded (publickey).

debug1: channel 0: new [client-session]

debug1: Requesting no-more-sessions@openssh.com

debug1: Entering interactive session.

debug1: Sending environment.

debug1: Sending env LANG = en_US.UTF-8

Last login: Thu May 12 23:51:22 2016 from 192.168.36.181

[root@su172 ~]#