[Bug 1674733] Re: php_network_getaddresses since last update

[Sean Leach]

*** This bug is a duplicate of bug 1674532 ***
    https://bugs.launchpad.net/bugs/1674532

I'm also seeing this issue replicated on 14.04.2 -

$ apt-cache show libc6 | grep Version
Version: 2.19-0ubuntu6.11
Version: 2.19-0ubuntu6

cat /var/log/apt/history.log

...
Start-Date: 2017-03-21  07:11:13
Upgrade: libgnutls-openssl27:amd64 (2.12.23-12ubuntu2.6, 2.12.23-12ubuntu2.7), multiarch-support:amd64 (2.19-0ubuntu6.9, 2.19-0ubuntu6.10), libfreetype6:amd64 (2.5.2-1ubuntu2.5, 2.5.2-1ubuntu2.6), libc-dev-bin:amd64 (2.19-0ubuntu6.9, 2.19-0ubuntu6.10), libc-bin:amd64 (2.19-0ubuntu6.9, 2.19-0ubuntu6.10), libc6:amd64 (2.19-0ubuntu6.9, 2.19-0ubuntu6.10), libgnutls26:amd64 (2.12.23-12ubuntu2.6, 2.12.23-12ubuntu2.7), libc6-dev:amd64 (2.19-0ubuntu6.9, 2.19-0ubuntu6.10)
End-Date: 2017-03-21  07:11:31
...

A system reboot brought back stability for circa 24 hours, but the
system went down again this morning. Interestingly, around 18 hours
after reboot network activity spiked substantially, and steadily.

At it's peak, a meagre 0.7mb/s upstream PHP stopped responding properly
to requests.

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https://bugs.launchpad.net/bugs/1674733

Title:
  php_network_getaddresses since last update

Status in glibc package in Ubuntu:
  Confirmed

Bug description:
  Hello,

  Since last update :

  2017-03-21 03:42:53,570 INFO Packages that will be upgraded: libc-bin
  libc-dev-bin libc6 libc6-dev libfreetype6 libfreetype6-dev locales
  multiarch-support

  
  We get a lot of these errors on our production and development environment (PHP Application on Codeigniter) on Ubuntu 14.04 on AWS EC2 :

  
  php_network_getaddresses: getaddrinfo failed: Name or service not known ubuntu


  Apparently we are not alone today :

  http://stackoverflow.com/questions/42926075/pdoexception-
  sqlstatehy000-2002-php-network-getaddresses-getaddrinfo-faile

  http://stackoverflow.com/questions/42925765/pdo-exception-php-network-
  getaddresses-getaddrinfo-failed-after-changing-dns

  http://serverfault.com/questions/839659/php-throwing-server-errors-
  after-ubuntu-ran-an-unattended-upgrades-session-any

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