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In order to disable, please refer to the steps as mentioned in below article:
https://www.thegeekdiary.com/how-to-disable-fips-mode-on-centos-rhel-7/?s=fips
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iptables
RHEL like systems have buggy version of iptables 1.8.4 which is causing issues with firewall, service routing and external network reachability as well as performance issues. It is required to configure k3s to use bundled version by modifying k3s service( same for k3s-agent service on worker nodes in HA deployments) file and adding --prefer-bundled-bin option to service’s cmd and restarting service.
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