We have configured Confluence authorization using Jira accounts (the link between applications is configured). Once we found a problem in the work of Confluence - did not open the page with the system settings. We decided to re-add the link between Jira and Confluence, but that did not help. Later it was found out that the problem was in the finished disk space in Confluence server.
After freeing up the disk space, it turned out that it is no longer possible to log in to the system - it shows an error, asks to re-enter the login and password and fill in the captcha.
tcpdump shows that Confluence still asks Jira for information about users, although the link is no longer there.
Confluence -> Jira
00:17:14.600256 IP (tos 0x0, ttl 64, id 57897, offset 0, flags [DF], proto TCP (6), length 670)
192.168.200.49.41244 > 192.168.200.61.webcache: Flags [P.], cksum 0x1451 (incorrect -> 0xfcf7), seq 1:619, ack 1, win 229, options [nop,nop,TS val 67518 ecr 4626264], length 618: HTTP, length: 618
POST /rest/usermanagement/1/authentication?username=admin HTTP/1.1
Accept: application/xml
Content-Length: 103
Content-Type: application/xml; charset=UTF-8
Host: jira.xxxxx.local:8080
Connection: Keep-Alive
User-Agent: Apache-HttpClient/4.5.5 (Java/1.8.0_162)
Accept-Encoding: gzip,deflate
Via: 1.1 localhost (Apache-HttpClient/4.5.5 (cache))
Authorization: Basic Q29uZmx1ZW5jZSAtIDE8Mi6xNjguNC40OSAtIDM4NmFmMGFmLTBhM2MtMzIwNi1iMzExLTE2NzNhODY5NzI1NzplYjVjNWQyOTU3OTAwNDOyNzI3N2U5MGQ2N2ZiNFQ3MjcwYzE8Yzhk
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><password><value>jX23#fEy1a!K</value></password>[!http]
Jira -> Confluence
00:17:14.601869 IP (tos 0x0, ttl 64, id 57444, offset 0, flags [DF], proto TCP (6), length 577)
192.168.200.61.webcache > 192.168.200.49.41244: Flags [P.], cksum 0xa3e0 (correct), seq 1:526, ack 619, win 236, options [nop,nop,TS val 4626266 ecr 67518], length 525: HTTP, length: 525
HTTP/1.1 401
X-AREQUESTID: 17x855x1
X-XSS-Protection: 1; mode=block
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
Content-Security-Policy: frame-ancestors 'self'
X-Embedded-Crowd-Version: JIRA/7.9.0
X-Crowd-User-Management-Version: 1.4
X-ASEN: SEN-959XXXX
WWW-Authenticate: BASIC realm="Crowd REST Service"
Content-Encoding: gzip
Vary: User-Agent
Content-Type: text/plain;charset=UTF-8
Content-Length: 52
Date: Thu, 19 Apr 2018 21:17:15 GMT
How now to break the link between Confluence and Jira?
