Hiroaki KAWAI hkwi

https://docs.docker.com/install/linux/docker-ce/ubuntu/

ansible-playbook

- hosts: all
  gather_facts: yes
  vars:
    ansible_python_interpreter: /usr/bin/python3
 tasks:

#cloud-config
ssh_pwauth: yes
system_info:
  default_user:
    name: admin
    # Following hash is password "hogehoge" generated by
    #   mkpasswd --method=SHA-512 --rounds=4096
    # See: https://cloudinit.readthedocs.io/en/latest/topics/examples.html
    passwd: $6$rounds=4096$u6DZal0//p$5B7yWkliowzZnxvd5U0MFR1lh.w.elPWzmmrfMPyPP0DEzxkFl9YMs5tavxbrqVunKVJkenf/EpUN/mMmGGfD1

lxc launch ubuntu:bionic hoge -c user.user-data="$(cat config.yml)"

https://avro.apache.org/docs/1.8.2/gettingstartedjava.html

http://cr.openjdk.java.net/~rfield/tutorial/JShellTutorial.html

https://gist.github.com/carloslima/af2cc498164aba8e4073367409353628

kafka jmx_exporter instrumentation demo

run.sh
runs "demo" machine on lxd
http://demo:8089/metrics

inventory.py is the copy of https://github.com/ansible/ansible/blob/devel/contrib/inventory/lxd.py

BGP/MPLS Inter-AS Option B

RFC 4364 10. Multi-AS Backbones に b) として記載されている。ASBR で VRF の経路交換が行われ（cとの差異）、かつ MPLS が使用される（aとの差異）。

 AS65000   AS65001
 +----+    +----+
 | r1 |----| r2 |   ASBR
 +----+ +----+

kubeadm init --pod-network-cidr 10.244.0.0/16
sysctl net.bridge.bridge-nf-call-iptables=1
# disable control plane isolation
kubectl taint nodes --all node-role.kubernetes.io/master-
# flannel
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/bc79dd1505b0c8681ece4de4c0d86c5cd2643275/Documentation/kube-flannel.yml

	http POST http://rest-proxy:8082/topics/jsontest content-type:application/vnd.kafka.json.v2+json records:='[{"value":{"name":"testUser"}}]'

	http http://rest-proxy:8082/topics/jsontest

	http http://rest-proxy:8082/topics

	http POST http://rest-proxy:8082/consumers/my_json_consumer content-type:application/vnd.kafka.v2+json accept:application/vnd.kafka.v2+json name=my_consumer_instance format=json auto.offset.reset=earliest

	http POST http://rest-proxy:8082/consumers/my_json_consumer/instances/my_consumer_instance/subscription content-type:application/vnd.kafka.v2+json topics:='["jsontest"]'

	---
	site: https://www.city.moriya.ibaraki.jp/
	missing: Cybertrust Japan Extended Validation Server CA
	sent:
	- Cybertrust Japan EV CA G2
	- Cybertrust Global Root

	---
	site: https://www.city.kurashiki.okayama.jp/
	missing: Cybertrust Japan Extended Validation Server CA

	HOSTS="s0 s1 s2"
	CLOUD_CFG=$(cat <<"EOF"
	#cloud-config
	ssh_pwauth: yes
	system_info:
	default_user:
	name: admin
	# Following hash is password "hogehoge"
	passwd: '$6$rounds=4096$aKbowvLi$V6KFRnvPQ8qKpD7/QwKr.JrE8e9cJ8O4cHwnyMNRAmczwR01jBvrJ9JbkXzli4oEua41qvuBz.YH3Ju8akV8B.'
	lock_passwd: false