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fix(dev-db/etcd): Handle missing ec2 user-data correctly.

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Important notice to all using curl: by default a 404 is not an error!

I noticed that instances created without any user data were attempting
to connect to a *lot* of random IP addresses and failing. After
attempting the curl command c10n uses to fetch user data it would seem
we have lots of virtual machines using the following as a secret key:

    <?xml version="1.0" encoding="iso-8859-1"?>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
             "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
     <head>
      <title>404 - Not Found</title>
     </head>
     <body>
      <h1>404 - Not Found</h1>
     </body>
    </html>

ᕙ(⇀‸↼‶)ᕗ

The --fail option is required for curl to behave responsibly.
This commit is contained in:
Michael Marineau 2013-07-30 11:33:06 -04:00
parent 62db854432
commit 9d25f8c06c
1 changed files with 1 additions and 1 deletions
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2
sdk_container/src/third_party/coreos-overlay/dev-db/etcd/files/coreos-c10n vendored
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@ -9,7 +9,7 @@ ETCD_BOOTSTRAP="/var/run/etcd/bootstrap.config"
/usr/bin/block-until-url $C10N_ENDPOINT
/usr/bin/block-until-url $META_URL
USER_DATA=$(curl -s $META_URL/user-data)
USER_DATA=$(curl -s --fail $META_URL/user-data)
if [ $? -eq 0 ] && [ ! -z "$USER_DATA" ]; then
URL=$USER_DATA