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cobbler needed files

• mnt: mount iso file in mnt directory, centos only e.g.mount ~/centos7.iso mnt
• file/loaders.tar.gz: boot loaders for BIOS and UEFI
• kickstarts: redhat kickstart files, default is YourKS.ks
• snippets: included in kickstart file, installing shell scripts

files for convenient

• Dockerfile: cobbler in docker
• file/test(.pub): rsa key pub for ~/.ssh/authorized_keys

files for configure

• network.cfg:
  • GWIP: gateway ip
  • MYIP: IP running cobbler
  • SUBNET: subnet for dhcp
  • NETMASK
  • DOMAIN: used in FQDN, e.g. node100-100(host).example.cluster(cluster)
  • DNSIP: coredns IP to resolv FQDN in cluster
  • STARTIP, ENDIP: for dhcp
• hosts.cfg:
  • as config of cobbler, coredns, ansible
  • primary-master: node100-100.sechnic1.cluster #cobbler-flag 192.168.100.100 00:00:00:22:22:20
    • node100-100.sechnic1.cluster: FQDN, shouldn't use ip
    • #cobbler-flag: flag string used by run.sh, followed by IP and MAC
  • nodes:
    • same as master, but maybe a label=node-role.kubernetes.io/infra= before cobblerflag, default compute label if not specify

run.sh

• 5-17: config settings and dncp.template file with network.cfg
• 22: import iso file from /mnt dictionary(in container)
• 24: edit profile to specify default kickstart
• 26: filter lines has cobbler-flag
• 27-39: add system(machine to install the ios)
• 41: sync config
• 42: filename is the bootloaer for the system, if not deleted, UEFI boot not work
• 43: restart dhcpd

cmd

• 3-19: rm, build, run, exec run.sh the cobbler image
• 22: copy hosts.cfg to ./file/
• 23: copy hosts.cfg to ../ansible
• 24-25: build and save dns image to tar file
• then: copy dns.tar to DNS_IP, load it and run it

debug

• http://192.168.234.203/cblr/svc/op/ks/system/node100-100 to see kickstart file right or not

mirror

• registry-1.docker.io can be used by {"registry-mirrors": [""]}
• other like gcr.io can be used by docker pull 192.168.100.100/apiserver:xxx or dns gcr.io to 192.168.100.100 then pull gcr.io/apiserver:xxx