老谢博客

yum install telnet-server
vi /etc/xinetd.d/telnet 
#默认telnet禁用root账户登陆，修改telnet配置文件，将配置文件中的disable         = no<修改为yes
 
vi /etc/securetty
 
#增加
#pts/0
#pts/1
#pts/2
#如果登录用户较多，需要更多的pts/*
 
/etc/init.d/xinetd start #启动xinetd进程。

yum install -y gcc openssl-devel pam-devel rpm-build pam-devel 
wget http://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-7.7p1.tar.gz
rpm -e `rpm -qa | grep openssh` --nodeps
tar -zxvf openssh-7.7p1.tar.gz 
cd openssh-7.7p1
./configure --prefix=/usr --sysconfdir=/etc/ssh --with-pam --with-zlib --with-md5-passwords --with-tcp-wrappers
make && make install
 
vi /etc/ssh/sshd_config
#sed -i '/^#PermitRootLogin/s/#PermitRootLogin yes/PermitRootLogin yes/' /etc/ssh/sshd_config
#或手动修改PermitRootLogin no 修改为 PermitRootLogin yes 允许root远程登陆
 
service sshd restart 
#重启openssh
ssh -V
#查看版本
 
cp contrib/redhat/sshd.init /etc/init.d/sshd
chkconfig --add sshd
chkconfig sshd on
service sshd start
service sshd restart
chkconfig --list sshd

/etc/init.d/xinetd stop && vi /etc/xinetd.d/telnet
将之前改过的disable=yes又改回去成no.
随后再将修改iptables将23端口关闭,并重启iptables服务.
至此,可以再开ssh登录,用ssh -V查看版本号.

yum install -y zlib-devel bzip2-devel xz-libs xz wget git tar gcc gcc-c++ openssl openssl-devel pcre-devel python-devel libevent automake autoconf libtool make git
wget http://www.python.org/ftp/python/2.7.8/Python-2.7.8.tar.xz
xz -d Python-2.7.8.tar.xz
tar -xvf Python-2.7.8.tar
cd Python-2.7.8
./configure --prefix=/usr/local
make && make altinstall
mv /usr/bin/python /usr/bin/python2.6.6
ln -s /usr/local/bin/python2.7 /usr/bin/python
 
wget --no-check-certificate https://pypi.python.org/packages/source/s/setuptools/setuptools-1.4.2.tar.gz
tar -xvf setuptools-1.4.2.tar.gz
cd setuptools-1.4.2
python2.7 setup.py install
 
wget --no-check-certificate https://pypi.python.org/packages/source/p/pip/pip-6.0.7.tar.gz
tar zxvf pip-6.0.7.tar.gz
cd pip-6.0.7
python setup.py install

[root@www ~]# ps -A --sort -rss -o comm,pmem,pcpu |uniq -c |head -15
      1 COMMAND         %MEM %CPU
      1 clamd           12.6  0.0
      1 httpd            4.2  0.1
      1 httpd            4.1  0.1
      1 iscsiuio         4.1  0.0
      1 httpd            4.1  0.2
      1 httpd            4.0  0.1
      1 httpd            3.9  0.1
      1 httpd            3.8  0.1
      1 httpd            3.8  0.4
      1 httpd            1.4  0.1
      1 httpd            1.1  0.0
      1 httpd            1.0  0.2
      1 mysqld           1.0  1.4
      1 httpd            0.8  0.0

chkconfig iscsi off
chkconfig iscsid off
service iscsid stop

[root@www ~]# vmstat -S M
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st
 0  0      0    548      0     69    0    0    22    10    0  161  4  0 87  9  0
[root@www ~]# free -m
             total       used       free     shared    buffers     cached
Mem:           768        219        548          0          0         68
-/+ buffers/cache:        150        617
Swap:            0          0          0

wget https://acelnmp.googlecode.com/files/vnstat-1.10.tar.gz
tar xvzf vnstat-1.10.tar.gz
cd vnstat-1.10/
make && make install
/usr/bin/vnstat -u -i eth0
vim /etc/cron.d/vnstat
0-55/5 * * * *   root   vnstat -u -i eth0
0-55/5 * * * *   root   vnstat --dumpdb -i eth0 >/var/lib/vnstat/vnstat_dump_eth0
wget http://www.sqweek.com/sqweek/files/vnstat_php_frontend-1.5.1.tar.gz
tar -zxf vnstat_php_frontend-1.5.1.tar.gz
mv vnstat_php_frontend-1.5.1.tar.gz vnstat