peterfarrell commented on issue #1851:
URL: https://github.com/apache/couchdb/issues/1851#issuecomment-2868142019
I know this issue is closed, but leaving a breadcrumb for those that come
behind me since this is the top search result.
We recently encountered the error described on a CouchDb instance that was
replicating from a "primary". We were seeing 100k errors or more per hour.
Replication was still working.
```
couch_replicator_auth_session : Could not parse cookie from response headers
cookie_format_invalid
```
This was CouchDB 3.3.3 which was hosted on OpenShift Container Platform
(OCP). We figured out that OCP's router (HAProxy) was the cause as it was
adding a cookie to enable "sticky" sessions.
We were able to disable the cookie behavior using an annotation on our
route. This is the patch file:
```yaml
metadata:
annotations:
haproxy.router.openshift.io/disable_cookies: "true"
# Cluster route must disable session cookie from OCP HAProxy Router
# Otherwise the secondary CouchDB instance will have many failures in the
log file
# couch_replicator_auth_session : Could not parse cookie from response
headers cookie_format_invalid
```
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