洛杉矶
C:\>ping 50.7.103.90 -n 6
正在 Ping 50.7.103.90 具有 32 字节的数据:
来自 50.7.103.90 的回复: 字节=32 时间=183ms TTL=51
来自 50.7.103.90 的回复: 字节=32 时间=178ms TTL=51
来自 50.7.103.90 的回复: 字节=32 时间=182ms TTL=51
来自 50.7.103.90 的回复: 字节=32 时间=182ms TTL=51
来自 50.7.103.90 的回复: 字节=32 时间=199ms TTL=51
来自 50.7.103.90 的回复: 字节=32 时间=188ms TTL=51
50.7.103.90 的 Ping 统计信息:
数据包: 已发送 = 6,已接收 = 6,丢失 = 0 (0% 丢失),
往返行程的估计时间(以毫秒为单位):
最短 = 178ms,最长 = 199ms,平均 = 185ms
C:\>tracert 50.7.103.90
通过最多 30 个跃点跟踪到 50.7.103.90 的路由
1 2 ms 1 ms 1 ms 192.168.1.1
2 37 ms 23 ms 17 ms 116.24.132.1
3 19 ms 17 ms 20 ms 183.56.71.221
4 27 ms 22 ms 22 ms 119.145.47.169
5 22 ms 23 ms 23 ms 121.34.242.234
6 24 ms 23 ms 23 ms 202.97.33.170
7 23 ms 22 ms 23 ms 202.97.60.90
8 181 ms 184 ms 184 ms 202.97.58.254
9 198 ms 199 ms 199 ms 202.97.52.226
10 202 ms 187 ms 189 ms xe-2-3-0.mpr4.sjc7.us.above.net [64.125.12.33]
11 191 ms 186 ms 187 ms xe-4-0-0.cr2.sjc2.us.above.net [64.125.24.5]
12 194 ms 192 ms 193 ms ae1.cr2.lax112.us.above.net [64.125.31.234]
13 199 ms 198 ms 199 ms xe-3-1-0.er4.lax112.us.above.net [64.125.21.194]
14 194 ms 193 ms 195 ms 208.184.110.166.IPYX-069066-930-ZYO.above.net [2
08.184.110.166]
15 187 ms 188 ms 189 ms 50.7.103.90
跟踪完成。
C:\>
丹佛
C:\Users\Harvey Mei>ping 204.45.182.138 -n 6
正在 Ping 204.45.182.138 具有 32 字节的数据:
来自 204.45.182.138 的回复: 字节=32 时间=275ms TTL=50
来自 204.45.182.138 的回复: 字节=32 时间=245ms TTL=50
来自 204.45.182.138 的回复: 字节=32 时间=326ms TTL=50
来自 204.45.182.138 的回复: 字节=32 时间=216ms TTL=50
来自 204.45.182.138 的回复: 字节=32 时间=234ms TTL=50
来自 204.45.182.138 的回复: 字节=32 时间=221ms TTL=50
204.45.182.138 的 Ping 统计信息:
数据包: 已发送 = 6,已接收 = 6,丢失 = 0 (0% 丢失),
往返行程的估计时间(以毫秒为单位):
最短 = 216ms,最长 = 326ms,平均 = 252ms
C:\Users\Harvey Mei>
C:\Users\Harvey Mei>tracert 204.45.182.138
通过最多 30 个跃点跟踪到 204.45.182.138 的路由
1 <1 毫秒 <1 毫秒 <1 毫秒 192.168.1.254
2 44 ms 36 ms 56 ms 183.11.248.1
3 13 ms 3 ms 3 ms 113.106.37.85
4 76 ms 119 ms 29 ms 121.15.179.98
5 29 ms 51 ms 35 ms 121.34.242.234
6 50 ms 53 ms 24 ms 202.97.35.254
7 8 ms 7 ms 6 ms 202.97.60.90
8 216 ms 271 ms 235 ms 202.97.58.218
9 183 ms 218 ms 180 ms 202.97.49.166
10 180 ms 193 ms 205 ms xe-4-1-3.mpr1.lax12.us.above.net [64.125.13.13]
11 166 ms 168 ms 167 ms xe-2-2-0.cr2.lax112.us.above.net [64.125.31.194]
12 290 ms 196 ms 187 ms ae1.cr2.sjc2.us.above.net [64.125.31.233]
13 244 ms 209 ms 160 ms ae4.cr1.sjc2.us.above.net [64.125.30.125]
14 215 ms 214 ms 233 ms ae4.mpr1.den1.us.above.net [64.125.20.21]
15 275 ms 197 ms 276 ms 208.184.34.122.IPYX-069048-ZYO.above.net [208.184.34.122]
16 220 ms 216 ms 218 ms 204.45.182.138
跟踪完成。
C:\Users\Harvey Mei>
i
查看当前的模板最小内存值
[root@h01 ~]# xe template-list name-label=CentOS\ 6\ \(32-bit\) params=memory-static-min --minimal 536870912 [root@h01 ~]#
获取指定模板的UUID值
[root@h01 ~]# xe template-list name-label=CentOS\ 6\ \(32-bit\) params=uuid --minimal 0114dd35-65f7-2bf6-bcda-4e31274c2c3f
修改指定模板的最小内存值
[root@h01 ~]# xe template-param-set uuid=0114dd35-65f7-2bf6-bcda-4e31274c2c3f memory-static-min=128MiB
查看修改后的慢板最小内存值
[root@h01 ~]# xe template-list name-label=CentOS\ 6\ \(32-bit\) params=memory-static-min --minimal 134217728 [root@h01 ~]#
……
……
CentOS 6 系统默认规则
[root@msr13 snmp]# cat /etc/sysconfig/iptables
# Firewall configuration written by system-config-firewall
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state –state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 22 -j ACCEPT
-A INPUT -j REJECT –reject-with icmp-host-prohibited
-A FORWARD -j REJECT –reject-with icmp-host-prohibited
COMMIT
[root@msr13 snmp]# service iptables status
Table: filter
Chain INPUT (policy ACCEPT)
num target prot opt source destination
1 ACCEPT all — 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED
2 ACCEPT icmp — 0.0.0.0/0 0.0.0.0/0
3 ACCEPT all — 0.0.0.0/0 0.0.0.0/0
4 ACCEPT tcp — 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:22
5 REJECT all — 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited
Chain FORWARD (policy ACCEPT)
num target prot opt source destination
1 REJECT all — 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited
Chain OUTPUT (policy ACCEPT)
num target prot opt source destination
[root@msr13 snmp]#
添加入站规则(使用服务监听类)
iptables -I INPUT -p tcp --dport 80 -j ACCEPT iptables -I INPUT -p tcp --dport 443 -j ACCEPT iptables -I INPUT -p tcp --dport 3306 -j ACCEPT
规则
iptables -A INPUT -i eth0 -p udp -s 113.106.92.180 –dport 161 -j ACCEPT
iptables -A INPUT -i eth0 -p udp -s 113.106.92.180 –dport 3306 -j ACCEPT
清除规则
iptables -F
iptables -X
iptables -Z
限制指定IP访问本机或特定端口服务
……
相关下载:
(1) percona monitor plugin 1.0.5 (2) documents
……
接压缩并执行安装程序 [root@linuxwalk tarball]# tar xzf DenyHosts-2.6.tar.gz [root@linuxwalk DenyHosts-2.6]# python setup.py install
查看生成的目录及文件
[root@linuxwalk DenyHosts-2.6]# ll /usr/share/denyhosts/ total 84 -rw-r--r-- 1 root root 16549 Dec 8 2006 CHANGELOG.txt -rwxr-xr-x 1 root root 4076 Apr 22 2006 daemon-control-dist -rw-r--r-- 1 root root 20830 Aug 20 2006 denyhosts.cfg-dist -rw-r--r-- 1 root root 18009 Dec 17 2005 LICENSE.txt drwxr-xr-x 2 root root 4096 Nov 4 10:23 plugins -rw-r--r-- 1 root root 3575 Feb 3 2006 README.txt drwxr-xr-x 2 root root 4096 Nov 4 10:23 scripts -rw-r--r-- 1 root root 1522 Apr 5 2006 setup.py [root@linuxwalk DenyHosts-2.6]#