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https://issues.apache.org/jira/browse/NIFI-7033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17206381#comment-17206381
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John Gibson commented on NIFI-7033:
-----------------------------------
I just experienced this as well with both NiFi 1.12.0 and 1.12.1 when running
on CentOS 7 when behind Apache HTTPD as a reverse proxy.
> wrong redirect from login/logout page when behind a custom url prefix/context
> -----------------------------------------------------------------------------
>
> Key: NIFI-7033
> URL: https://issues.apache.org/jira/browse/NIFI-7033
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core UI
> Affects Versions: 1.10.0
> Environment: NiFi official Docker Container, behind HAProxy, RHEL
> 7.6, Docker 18.06.0-ce
> Reporter: Rastislav Krist
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Login/logout pages don't redirect properly when NiFi is deployed on a custom
> URL prefix (context). For example when deploying NiFi on custom URL like
> [https://nifi-host/mynifi|https://nifi-host/mynifi,] (using HAPROXY, setting
> nifi.web.proxy.host=mynifi), UI works perfectly (via
> [https://nifi-host/mynifi/nifi/|https://nifi-host/mynifi,]). Problem is with
> login/logout pages, which both don't seem to honor X-ProxyContextPath and
> after successfull login/logout they both redirect to
> [https://nifi-host/nifi|https://nifi-host/mynifi,].
> After some investigations made, the problem on login page seems to be in
> nf-login.js containing hardcoded url in lines 121-125:
> {code:java}
> if (accessStatus.status === 'ACTIVE') {
> // reload as appropriate - no need to schedule token refresh as the page
> is reloading
> if (top !== window) {
> parent.window.location = '/nifi';
> } else {
> window.location = '/nifi';
> }
> } else {
> ...
> {code}
> where on logout page, redirect url is composed purely using
> HttpServletResponse in LogoutFilter.java, 53 (without examining
> X-ProxyContextPath):
> {code:java}
> ((HttpServletResponse) response).sendRedirect("login");
> {code}
> Found a similar issue with OpenID fixed few version ago, I am not sure if it
> is somehow related: NIFI-5237
>
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