Tag Archives: Authentication

Grafana Header

Grafana – unable to login “User already exists”

The Issue

When trying to log into Grafana Web UI using an OIDC provider, in my case, Dex. The login would fail due to the error “User already exists”, after some time. This happened for any users given access via the OIDC.

The Cause

This looks to happen due to a CVE fix implemented in Grafana as documented in the two comments below:

The Fix

To resolve this issue, for Grafana 10.0.x and 9.5.6, the env variable GF_AUTH_OAUTH_ALLOW_INSECURE_EMAIL_LOOKUP can be set or the config key oauth_allow_insecure_email_lookup can be set under the auth section.


Source + Source 2

Hope this helps anyone stuck out there!


Dean Lewis

Cisco CCNP Training Course – Day 8 – SWITCH

So day 8 essentially was the last day of the bootcamp, with Day 9 + 10 being left for TSHOOT, of which there is very little documented, as its……. troubleshooting a broken system.

So Day 8, let’s get to it.

Here’s whats covered;

  • HSRP Continued…..
    • comparison between HSRP and VRRP
    • GLBP – Gateway Load Balancing Protocol
  • Port-Security
  • Private VLANs
  • AAA – Authentication, Authorization, Accounting
  • VLAN Access-List
  • DHCP Snooping
  • ARP Poisoning / Man in the Middle
  • IP Spoofing
  • Other security considerations
  • Logging
  • MLS-Mutli-Layer Switching
    • Process Switching
    • Fast Switching
    • CEF
  • Voice – IP Telephony
  • QoS – Quality of Service
    • Layer 2 – Class of Service
    • Layer 3 – IP Precedence (Old setting)
    • Layer 3 – DSCP – Sub Marking (New setting)
    • Configuration of QoS
  • And that’s all folks

Continue reading Cisco CCNP Training Course – Day 8 – SWITCH

Cisco CCNP Training Course – Day 2 – ROUTE

So lets dive into Day 2,

One of the things I will also aim to do is re-create the topologies in Packet Tracer and upload the files for your use at some point in the future, here’s what we covered today;

  • EIGRP Cont…
  • EIGRP Authentication
  • EIGRP Summerization
  • EIGRP route propagation
  • EIGRP Stub Networks
  • EIGRP Timers
  • OSPF Intro


Continue reading Cisco CCNP Training Course – Day 2 – ROUTE