Playbook

# node-id       : generate node identity
# node_name     : setup hostname
# node_hosts    : setup /etc/hosts records
# node_resolv   : setup dns resolver
# node_firewall : setup firewall & selinux
# node_ca       : add & trust ca certificate
# node_repo     : add upstream repo
# node_pkg      : install yum packages
# node_feature  : setup numa, grub, static network
# node_kernel   : enable kernel modules
# node_tune     : setup tuned profile
# node_sysctl   : setup additional sysctl parameters
# node_profile  : write /etc/profile.d/node.sh
# node_ulimit   : setup resource limits
# node_data     : setup main data dir
# node_admin    : setup admin user and ssh key
# node_timezone : setup timezone
# node_ntp      : setup ntp server/clients
# node_crontab  : add/overwrite crontab tasks
# node_vip      : setup optional l2 vrrp vip for node cluster
#   - vip_install
#   - vip_config
#   - vip_launch
#   - vip_reload
# haproxy       : setup haproxy on node to expose services
#   - haproxy_install
#   - haproxy_config
#   - haproxy_launch
#   - haproxy_reload
# monitor       : setup node_exporter & promtail for metrics & logs
#   - haproxy_register
#   - vip_dns
#   - node_exporter
#     - node_exporter_config
#     - node_exporter_launch
#   - vip_exporter
#     - vip_exporter_config
#     - vip_exporter_launch
#   - node_register
#   - promtail
#     - promtail_clean
#     - promtail_config
#     - promtail_install
#     - promtail_launch

# register       : remove register from prometheus & nginx
#   - prometheus : remove registered prometheus monitor target
#   - nginx      : remove nginx proxy record for haproxy admin
# vip            : remove node keepalived if enabled
# haproxy        : remove haproxy load balancer
# node_exporter  : remove monitoring exporter
# vip_exporter   : remove keepalived_exporter if enabled
# promtail       : remove loki log agent
# profile        : remove /etc/profile.d/node.sh