[GitHub] [apisix] Gary-Airwallex opened a new issue #4197: request help: set different Host header for different Nodes in a single Upstream?

[GitBox <gi...@apache.org>]

Gary-Airwallex opened a new issue #4197:
URL: https://github.com/apache/apisix/issues/4197


   ### Issue description
   APISIX supports rewriting of Host header while talking to the upstream nodes, either with the proxy-rewrite plugin or with "pass_host" and "upstream_host" attributes in Upstream configuration. However, they both rewrite host for the Upstream, not nodes - so for example if I have an upstream with nodes: 
   ```
   "nodes": {
       "host-1.com:80": 1,
       "host-2.com:443": 1
   }, 
   ```
   I can't set Host to "host-1.com" when the first node is picked by the balancer, and set Host to "host-2.com" when the second is picked. I have tried ngx.req.set_header() or set the upstream_host variable in balancer phase directly and they don't seem to work. Is it a constraint by nginx modules / openresty? 
   
   ### Environment
   
   * apisix version (cmd: `apisix version`): 2.5
   * OS (cmd: `uname -a`): Ubuntu 18.04
   * OpenResty / Nginx version (cmd: `nginx -V` or `openresty -V`): 1.19.3.1
   * etcd version, if have (cmd: run `curl http://127.0.0.1:9090/v1/server_info` to get the info from server-info API):
   * apisix-dashboard version, if have:
   * luarocks version, if the issue is about installation (cmd: `luarocks --version`):
   


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[GitHub] [apisix] gxthrj closed issue #4197: request help: set different Host header for different Nodes in a single Upstream?

[GitBox <gi...@apache.org>]

gxthrj closed issue #4197:
URL: https://github.com/apache/apisix/issues/4197


   


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[GitHub] [apisix] tokers commented on issue #4197: request help: set different Host header for different Nodes in a single Upstream?

[GitBox <gi...@apache.org>]

tokers commented on issue #4197:
URL: https://github.com/apache/apisix/issues/4197#issuecomment-834244801


   https://github.com/apache/apisix/blob/master/apisix/schema_def.lua#L392
   
   try to set `pass_host` to node.


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[GitHub] [apisix] Gary-Airwallex commented on issue #4197: request help: set different Host header for different Nodes in a single Upstream?

[GitBox <gi...@apache.org>]

Gary-Airwallex commented on issue #4197:
URL: https://github.com/apache/apisix/issues/4197#issuecomment-834231619


   Just saw this Issue https://github.com/apache/apisix/issues/2620. It seems like balancer.recreate_request() is what's needed to achieve this?


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