EC2 Ubuntu 14.04がStatus 1/2のまま起動しなくなる

詳しい原因は不明なのですがUbuntu14.04でStop/Start後にステータスが1/2のまま戻らなくなる事象が発生したのでメモ

現象

CloudFormationを利用してUbuntu14.04を起動する際にStatus 1/2のままになりSSHログインが出来ない

作成時のSyslog

[    6.428130] xenbus_probe_frontend: Waiting for devices to initialise: 25s...20s...15s...10s...5s...0s...

[   36.332082] 235s...230s...225s...220s...[   52.932134] random: nonblocking pool is initialized

215s...210s...205s...200s...195s...190s...185s...180s...175s...170s...165s...160s...155s...150s...145s...140s...135s...130s...125s...120s...115s...110s...105s...

Stop/Start時のSyslog

cloud-init-nonet[284.14]: waiting 120 seconds for network device
cloud-init-nonet[404.15]: gave up waiting for a network device.
Cloud-init v. 0.7.5 running 'init' at Thu, 20 Nov 2014 04:24:16 +0000. Up 404.30 seconds.
ci-info: +++++++++++++++++++++++Net device info++++++++++++++++++++++++
ci-info: +--------+-------+-----------+-----------+-------------------+
ci-info: | Device |   Up  |  Address  |    Mask   |     Hw-Address    |
ci-info: +--------+-------+-----------+-----------+-------------------+
ci-info: |   lo   |  True | 127.0.0.1 | 255.0.0.0 |         .         |
ci-info: |  eth0  | False |     .     |     .     | 00:00:00:00:00:00 |
ci-info: +--------+-------+-----------+-----------+-------------------+
ci-info: !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Route info failed!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

原因

cloud-initのバグらしい

ネットワークの有効化が出来ていない？

回避策

発生した場合はAMI化し、別インスタンスとして立てることが可能

/etc/network/interfaces へ以下を追記

auto eth0
iface eth0 inet dhcp

以下をコメントアウト

# source /etc/network/interfaces.d/*.cfg

設定後に再度Stop/Startを実行する

※Syslogを追記