spring-boot-admin: Failing request on metrics redirect to login page

Hi, first of all thanks for this software, it’s amanzing !

We’ve noticed something weird after upgrading our spring-boot-admin instance from 2.3.1 to 2.4.0: when browsing instance details, after a random delay ( 5 - 30s ) users are automatically redirected to the login page

console log:

The metrics causing the errors are not always the same:

• http://spring-boot-admin/instances/f4933231d1f3/actuator/metrics/jvm.memory.max?tag=area:heap
• http://spring-boot-admin/instances/f4933231d1f3/actuator/metrics/jvm.memory.used?tag=area:nonheap,id:Metaspace
• http://spring-boot-admin/instances/f4933231d1f3/actuator/metrics/jvm.threads.daemon

Instance details:

• spring-boot-admin-server 2.4.0
• spring-boot 2.4.3
• java 11
• auth mod: LDAP

Server configuration:

spring.boot.admin.monitor.status-interval = 30000
spring.boot.admin.monitor.status-lifetime = 30000
spring.boot.admin.monitor.default-timeout = 30000
spring.boot.admin.monitor.default-retries = 1

Client configuration:

spring.boot.admin.client.url     = http://spring-boot-admin/
spring.boot.admin.client.enabled = true
spring.boot.admin.client.instance.metadata.tags.environment = production

management.info.git.mode                  = full
management.health.mail.enabled            = false
management.health.ldap.enabled            = false

management.endpoints.web.exposure.include = *
management.endpoint.health.show-details   = always
management.endpoint.liquibase.enabled     = false
management.endpoint.beans.enabled         = false
management.endpoint.caches.enabled        = false
management.endpoint.threaddump.enabled    = false
management.endpoint.shutdown.enabled      = false
management.endpoint.heapdump.enabled      = false
management.endpoint.conditions.enabled    = false
management.endpoint.jolokia.enabled       = false


spring.security.user.name         = springbootadmin-user
spring.security.user.password     = xxxxxxx
spring.boot.admin.client.username = ${spring.security.user.name}
spring.boot.admin.client.password = ${spring.security.user.password}
spring.boot.admin.client.instance.metadata.user.name        = ${spring.security.user.name}
spring.boot.admin.client.instance.metadata.user.password    = ${spring.security.user.password}