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Posted to notifications@apisix.apache.org by GitBox <gi...@apache.org> on 2020/08/03 10:14:52 UTC
[GitHub] [apisix] purelind opened a new issue #1975: request help: How to redirect url to specific node ip base on url head value with upstream chash?
purelind opened a new issue #1975:
URL: https://github.com/apache/apisix/issues/1975
### Issue description
How to use upstream chash implement looking a specific node ip based on url head value.
example
```nginx
map $HEAD_userid $group {
1 cluster1;
2 cluster2;
default cluster1;
}
upstream cluster {
server a.iresty.com;
}
upstream cluster2 {
server b.iresty.com
}
server {
location / {
proxy_pass http://${group};
}
}
###
url with HAED userid=1 http://127.0.0.1:9080/ --> http://a.iresty.com/
url with HEAD userid=2 http://127.0.0.1:9080/ --> http://b.iresty.com/
```
upstream chash doc describe some usage about type chash, it say that looking specify node ip base on key && hash_on parameters.
I have read a closed issuse about this which claim that upstream chash could figure out this problem. #1488
Coud you explain more detail for me about how to apply this in apisix upstream
Thank you!
### Environment
* apisix version (cmd: `apisix version`): 1.4
* OS: ubuntu18.04.2
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[GitHub] [apisix] membphis commented on issue #1975: request help: How to redirect url to specific node ip base on url head value with upstream chash?
Posted by GitBox <gi...@apache.org>.
membphis commented on issue #1975:
URL: https://github.com/apache/apisix/issues/1975#issuecomment-668346580
@purelind you can create two routes, different route use different upstream node
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[GitHub] [apisix] purelind closed issue #1975: request help: How to redirect url to specific node ip base on url head value with upstream chash?
Posted by GitBox <gi...@apache.org>.
purelind closed issue #1975:
URL: https://github.com/apache/apisix/issues/1975
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[GitHub] [apisix] membphis commented on issue #1975: request help: How to redirect url to specific node ip base on url head value with upstream chash?
Posted by GitBox <gi...@apache.org>.
membphis commented on issue #1975:
URL: https://github.com/apache/apisix/issues/1975#issuecomment-668064922
please take a look at this test case: https://github.com/apache/apisix/blob/master/t/admin/upstream.t#L1186
if you have any questions, please let us know.
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[GitHub] [apisix] purelind commented on issue #1975: request help: How to redirect url to specific node ip base on url head value with upstream chash?
Posted by GitBox <gi...@apache.org>.
purelind commented on issue #1975:
URL: https://github.com/apache/apisix/issues/1975#issuecomment-668378729
Thanks a lot! Two different routes with vars figureout my problem exactly.
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[GitHub] [apisix] purelind commented on issue #1975: request help: How to redirect url to specific node ip base on url head value with upstream chash?
Posted by GitBox <gi...@apache.org>.
purelind commented on issue #1975:
URL: https://github.com/apache/apisix/issues/1975#issuecomment-667940212
@membphis Please take a look, thank you!
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[GitHub] [apisix] purelind commented on issue #1975: request help: How to redirect url to specific node ip base on url head value with upstream chash?
Posted by GitBox <gi...@apache.org>.
purelind commented on issue #1975:
URL: https://github.com/apache/apisix/issues/1975#issuecomment-668338034
I have read this test case.
It means that apisix will chose upstream node ip base on the result of hash on custom_head value, but which node ip been selected is depend on hash_on algorithm. On the other way, it mean we are not able to select specific node ip in my way.
```nignx
current useage:
hash_on type is header， key is content-type. node ip is depend on result of hash of header_content-type
{
"uri": "/hash_on_header",
"upstream": {
"key": "content-type",
"type ": "chash",
"hash_on ": "header",
"nodes ": {
"127.0.0.1:1980": 1,
"127.0.0.1:1981": 1
}
}
}
what i want:
hash_on type is header， key is custom head User-PhoneNumber, User-PhoneNumber=123456789 is special.
{
"uri": "/hash_on_header",
"upstream": {
"key": "user-phonenumber=123456789",
"type ": "chash",
"hash_on ": "header",
"nodes ": {
"127.0.0.1:1980": 1, # user-phonenumber=123456789
"127.0.0.1:1981": 1 # user-phtonenumber != 123456789
}
}
}
```
thank you for your response.
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[GitHub] [apisix] purelind commented on issue #1975: request help: How to redirect url to specific node ip base on url head value with upstream chash?
Posted by GitBox <gi...@apache.org>.
purelind commented on issue #1975:
URL: https://github.com/apache/apisix/issues/1975#issuecomment-668379444
```nginx
route1
{
"uri": "/test",
"hosts": ["*.iresty.com"],
"methods": ["PUT", "GET"],
"name": "指定路由至特定upstream",
"vars": [
["http_phonenumber", "~=", 123456789]
],
"upstream": {
"type": "roundrobin",
"nodes": {
"127.0.0.1:1980": 1
}
}
}
route2
{
"uri": "/test",
"hosts": ["*.iresty.com"],
"methods": ["PUT", "GET"],
"name": "指定路由至特定upstream",
"vars": [
["http_phonenumber", "==", 123456789]
],
"upstream": {
"type": "roundrobin",
"nodes": {
"127.0.0.1:1980": 1
}
}
}
```
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