CODEWITHSUNDEEP
google-cloud-platformload-balancingmicroservices
Dipen Dedania
Dipen Dedania

Reputation: 1450

path based configuration in GCP load balancer

I'm working on sort of prototype project. I have two micro services hosted on separate server with different tech stack. Here are some of the endpoints of it

1 User management
    -- /users
    -- /user/:id
    -- /user/roles
2 Other operations (e.g. managing a book, book details)
    -- /books
    -- /book/:id
    -- /book/:id/history

I'm using GCP for hosting my apps. I have one load balancer pointing to above backend services. I'm trying to use Host and path rules to use both services and it looks like below screenshot. enter image description here

I would like to access my User management micro service as 

dns/user-manager/users
dns/user-manager/user/:id
dns/user-manager/user/roles

and other micro service as 

dns/book-manager/books
dns/book-manager/book/:id
dns/book-manager/book/:id/history

but it looks like, it just forwarding above url to particular service directly, so I'm getting 404. And I don't want to add all my routes to load balancer path settings as it will be difficult to maintain. Looking forward to hear some solutions. Thanks in advance.

Upvotes: 4

Views: 3364

Answers (3)

septiadi
septiadi

Reputation: 81

in the routing rules, choose the advance host and path rule button. then in the path mathcer box put somthing like this.

defaultService: projects/{project}/global/backendServices/{backend-a}
name: matcher1
routeRules:
- matchRules:
  - prefixMatch: /dev/
  priority: 1
  routeAction:
    weightedBackendServices:
    - backendService: projects/{project}/global/backendServices/{backend-b}
      weight: 100
    urlRewrite:
      pathPrefixRewrite: /
      hostRewrite: {domain}

it will redirect your path {domain}/dev/test to {domain}/test on backend-b

Upvotes: 0

David
David

Reputation: 9721

Google now offers URL rewriting which can achieve this.

Upvotes: 0

David
David

Reputation: 9721

I understand you want inbound requests to /user-manager/SUB/PATH to be forwarded to user-service and re-written to /SUB/PATH. It sounds like you have got the forwarding to work, but not the rewriting.

Google HTTP/S LB can't do the re-writing for you. You will have to add a reverse-proxy between GCLB and your microservice to rewrite the URLs. For example nginx can do this.

Upvotes: 2

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