Skip to content

Commit d9fbf0d

Browse files
digoaldigoal
committed
new doc
1 parent 11c6e59 commit d9fbf0d

File tree

4 files changed

+152
-0
lines changed

4 files changed

+152
-0
lines changed

‎201810/20181005_01.md‎

Lines changed: 150 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,150 @@
1+
## 关于ECS 无法使用VIP的问题 - SDN , openflow
2+
3+
### 作者
4+
digoal
5+
6+
### 日期
7+
2018-10-04
8+
9+
### 标签
10+
PostgreSQL , ECS , vip , openflow , sdn
11+
12+
----
13+
14+
## 背景
15+
给ECS虚拟机配置VIP，无法通讯，原因？
16+
17+
### HOST A
18+
```
19+
[root@pg11 ~]# ip addr show eth0
20+
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
21+
link/ether 00:16:3e:0a:5c:f1 brd ff:ff:ff:ff:ff:ff
22+
inet 172.17.20.29/20 brd 172.17.31.255 scope global dynamic eth0
23+
valid_lft 313883835sec preferred_lft 313883835sec
24+
```
25+
26+
### HOST B
27+
```
28+
postgres@pg11-> ip addr show eth0
29+
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
30+
link/ether 00:16:3e:12:2f:48 brd ff:ff:ff:ff:ff:ff
31+
inet 172.17.20.30/20 brd 172.17.31.255 scope global dynamic eth0
32+
valid_lft 313883847sec preferred_lft 313883847sec
33+
```
34+
35+
### 互相在同一个VPC（vswitch , hub）
36+
相互可以访问
37+
38+
```
39+
a ping b
40+
ping 172.17.20.29
41+
PING 172.17.20.29 (172.17.20.29) 56(84) bytes of data.
42+
64 bytes from 172.17.20.29: icmp_seq=1 ttl=64 time=0.156 ms
43+
64 bytes from 172.17.20.29: icmp_seq=2 ttl=64 time=0.102 ms
44+
45+
b ping a
46+
ping 172.17.20.30
47+
PING 172.17.20.30 (172.17.20.30) 56(84) bytes of data.
48+
64 bytes from 172.17.20.30: icmp_seq=1 ttl=64 time=0.166 ms
49+
64 bytes from 172.17.20.30: icmp_seq=2 ttl=64 time=0.112 ms
50+
```
51+
52+
配置VIP，无法跨机访问
53+
54+
host a
55+
56+
```
57+
[root@pg11 ~]# ip addr add 172.17.20.39/20 brd + dev eth0 label eth0:1
58+
[root@pg11 ~]# ifconfig
59+
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
60+
inet 172.17.20.29 netmask 255.255.240.0 broadcast 172.17.31.255
61+
ether 00:16:3e:0a:5c:f1 txqueuelen 1000 (Ethernet)
62+
RX packets 22221492822 bytes 33552649055304 (30.5 TiB)
63+
RX errors 0 dropped 0 overruns 0 frame 0
64+
TX packets 631860042 bytes 42907936724 (39.9 GiB)
65+
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
66+
67+
eth0:1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
68+
inet 172.17.20.39 netmask 255.255.240.0 broadcast 172.17.31.255
69+
ether 00:16:3e:0a:5c:f1 txqueuelen 1000 (Ethernet)
70+
71+
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
72+
inet 127.0.0.1 netmask 255.0.0.0
73+
loop txqueuelen 1 (Local Loopback)
74+
RX packets 959417 bytes 111291935 (106.1 MiB)
75+
RX errors 0 dropped 0 overruns 0 frame 0
76+
TX packets 959417 bytes 111291935 (106.1 MiB)
77+
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
78+
79+
80+
[root@pg11 ~]# ping 172.17.20.39
81+
PING 172.17.20.39 (172.17.20.39) 56(84) bytes of data.
82+
64 bytes from 172.17.20.39: icmp_seq=1 ttl=64 time=0.012 ms
83+
64 bytes from 172.17.20.39: icmp_seq=2 ttl=64 time=0.008 ms
84+
```
85+
86+
host b
87+
88+
```
89+
[root@pg11 ~]# ping 172.17.20.39
90+
PING 172.17.20.39 (172.17.20.39) 56(84) bytes of data.
91+
```
92+
93+
无防火墙
94+
95+
```
96+
[root@pg11 ~]# iptables -L -v -n
97+
Chain INPUT (policy ACCEPT 8 packets, 528 bytes)
98+
pkts bytes target prot opt in out source destination
99+
100+
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
101+
pkts bytes target prot opt in out source destination
102+
103+
Chain OUTPUT (policy ACCEPT 6 packets, 1000 bytes)
104+
pkts bytes target prot opt in out source destination
105+
```
106+
107+
### 原因
108+
宿主机通过openflow进行流控，未注册的vm+ip可以被拒绝。具体可参考SDN文档。
109+
110+
删除VIP
111+
112+
```
113+
[root@pg11 ~]# ip addr del 172.17.20.39/20 brd + dev eth0 label eth0:1
114+
[root@pg11 ~]# ifconfig
115+
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
116+
inet 172.17.20.29 netmask 255.255.240.0 broadcast 172.17.31.255
117+
ether 00:16:3e:0a:5c:f1 txqueuelen 1000 (Ethernet)
118+
RX packets 22221492889 bytes 33552649060975 (30.5 TiB)
119+
RX errors 0 dropped 0 overruns 0 frame 0
120+
TX packets 631860095 bytes 42907943783 (39.9 GiB)
121+
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
122+
123+
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
124+
inet 127.0.0.1 netmask 255.0.0.0
125+
loop txqueuelen 1 (Local Loopback)
126+
RX packets 959424 bytes 111292619 (106.1 MiB)
127+
RX errors 0 dropped 0 overruns 0 frame 0
128+
TX packets 959424 bytes 111292619 (106.1 MiB)
129+
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
130+
```
131+
132+
## 参考
133+
[《linux IP 命令使用举例》](../201611/20161112_01.md)
134+
135+
[A Virtual Switch Platform for Host SDN in the Public Cloud](20181005_01_doc_001.pdf)
136+
137+
https://www.microsoft.com/en-us/research/wp-content/uploads/2017/09/login_fall17_02_firestone.pdf
138+
139+
https://www.opennetworking.org/
140+
141+
https://www.cisco.com/c/en/us/about/press/internet-protocol-journal/back-issues/table-contents-59/161-sdn.html
142+
143+
https://en.wikipedia.org/wiki/OpenFlow
144+
145+
146+
<a rel="nofollow" href="http://info.flagcounter.com/h9V1" ><img src="http://s03.flagcounter.com/count/h9V1/bg_FFFFFF/txt_000000/border_CCCCCC/columns_2/maxflags_12/viewers_0/labels_0/pageviews_0/flags_0/" alt="Flag Counter" border="0" ></a>
147+
148+
149+
## [digoal's 大量PostgreSQL文章入口](https://github.com/digoal/blog/blob/master/README.md "22709685feb7cab07d30f30387f0a9ae")
150+

‎201810/20181005_01_doc_001.pdf‎

560 KB
Binary file not shown.

‎201810/readme.md‎

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -2,6 +2,7 @@
22

33
### 文章列表
44
----
5+
##### 20181005_01.md [《关于ECS 无法使用VIP的问题 - SDN , openflow》](20181005_01.md)
56
##### 20181004_03.md [《PostgreSQL JOIN limit 优化器 成本计算 改进 - mergejoin startup cost 优化》](20181004_03.md)
67
##### 20181004_02.md [《职业规划、转型思考》](20181004_02.md)
78
##### 20181004_01.md [《PostgreSQL Mastering book 序》](20181004_01.md)

‎README.md‎

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -37,6 +37,7 @@ digoal's|PostgreSQL|文章|归类
3737

3838
### 所有文档如下
3939
----
40+
##### 201810/20181005_01.md [《关于ECS 无法使用VIP的问题 - SDN , openflow》](201810/20181005_01.md)
4041
##### 201810/20181004_03.md [《PostgreSQL JOIN limit 优化器 成本计算 改进 - mergejoin startup cost 优化》](201810/20181004_03.md)
4142
##### 201810/20181004_02.md [《职业规划、转型思考》](201810/20181004_02.md)
4243
##### 201810/20181004_01.md [《PostgreSQL Mastering book 序》](201810/20181004_01.md)

0 commit comments

Comments
 (0)