我正在使用带有最新更新的Centos 6.5.
我的问题是,每当我尝试连接到某些本地服务时,它就会挂起,例如:
wget的
wget 127.0.0.1
--2014-03-11 12:43:42-- http://127.0.0.1/
Connecting to 127.0.0.1:80...
After a while timeout...
SSH
# ssh 127.0.0.1 -p 6060 -v
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 127.0.0.1 [127.0.0.1] port 6060.
debug1: connect to address 127.0.0.1 port 6060: Connection timed out
ssh: connect to host 127.0.0.1 port 6060: Connection timed out
它会挂起来超时.
与telnet相同,与连接到irc服务器相同.外部连接正常运行…
netstat -tpln
# netstat -tpln
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 589/sendmail
tcp 0 0 127.0.0.1:6060 0.0.0.0:* LISTEN 520/sshd
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 619/Nginx
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 478/sshd
tcp 0 0 ::1:6060 :::* LISTEN 520/sshd
tcp 0 0 :::22 :::* LISTEN 478/sshd
netstat -rn
# netstat -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 venet0
0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 venet0
iptables的
我arleady冲出iptables,没有运气.输出表格iptables:
# iptables -nvL
Chain INPUT (policy ACCEPT 634 packets, 49819 bytes)
pkts bytes target prot opt in out source destination
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain OUTPUT (policy ACCEPT 517 packets, 47027 bytes)
pkts bytes target prot opt in out source destination
环回配置
# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNowN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: venet0: <broADCAST,POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNowN
link/void
inet 127.0.0.1/32 scope host venet0
inet 176.122.224.115/32 brd 176.122.224.115 scope global venet0:0
SELinux的转变并没有改善它.
ip route show table local
# ip route show table local
local 176.122.224.115 dev venet0 proto kernel scope host src 176.122.224.115
broadcast 176.122.224.115 dev venet0 proto kernel scope link src 176.122.224.115
broadcast 127.255.255.255 dev lo proto kernel scope link src 127.0.0.1
broadcast 127.0.0.0 dev lo proto kernel scope link src 127.0.0.1
local 127.0.0.1 dev lo proto kernel scope host src 127.0.0.1
local 127.0.0.0/8 dev lo proto kernel scope host src 127.0.0.1
跟踪路由
# traceroute 127.0.0.1
traceroute to 127.0.0.1 (127.0.0.1), 30 hops max, 60 byte packets
1 localhost.localdomain (127.0.0.1) 0.029 ms 0.014 ms 0.012 ms
ping 127.0.0.1
工作正常
# ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.024 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.036 ms
关于它的最奇怪的事情是,我可以从外部地址(例如我的ssh’ing的计算机)连接到ssh,Nginx服务器而没有问题.
ISP重启我的服务器后会发生这种情况.可能有用的是,服务器经常更新而不重新启动.
解决方法:
根据您发布的ifconfig输出,您在两个接口上设置了环回地址127.0.0.1.
尝试
ip addr del 127.0.0.1/32 dev venet0
并查看您的环回访问是否已恢复.
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