Public bug reported:
I have multiple network interfaces in OpenStack. Each defines 2
resolvers. This goes over 3 resolvers and on RHEL that leads to the
following traceback:
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: [CLOUDINIT]
util.py[DEBUG]: Read 140 bytes from /etc/resolv.conf
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: [CLOUDINIT]
util.py[WARNING]: failed stage init-local
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: 2016-09-06 13:26:03,786 -
util.py[WARNING]: failed stage init-local
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: [CLOUDINIT]
util.py[DEBUG]: failed stage init-local
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: failed run of stage
init-local
Sep 06 13:26:03 testing02.novalocal cloud-init[362]:
------------------------------------------------------------
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: Traceback (most recent
call last):
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: File
"/usr/lib/python2.7/site-packages/cloud_init-0.7.7-py2.7.egg/cloudinit/cmd/main.py",
line 530, in status_wrapper
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: ret = functor(name, args)
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: File
"/usr/lib/python2.7/site-packages/cloud_init-0.7.7-py2.7.egg/cloudinit/cmd/main.py",
line 277, in main_init
Sep 06 13:26:03 testing02.novalocal cloud-init[362]:
init.apply_network_config(bring_up=bool(mode != sources.DSMODE_LOCAL))
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: File
"/usr/lib/python2.7/site-packages/cloud_init-0.7.7-py2.7.egg/cloudinit/stages.py",
line 652, in apply_network_config
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: return
self.distro.apply_network_config(netcfg, bring_up=bring_up)
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: File
"/usr/lib/python2.7/site-packages/cloud_init-0.7.7-py2.7.egg/cloudinit/distros/__init__.py",
line 162, in apply_network_config
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: dev_names =
self._write_network_config(netconfig)
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: File
"/usr/lib/python2.7/site-packages/cloud_init-0.7.7-py2.7.egg/cloudinit/distros/rhel.py",
line 71, in _write_network_config
Sep 06 13:26:03 testing02.novalocal cloud-init[362]:
self._net_renderer.render_network_state("/", ns)
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: File
"/usr/lib/python2.7/site-packages/cloud_init-0.7.7-py2.7.egg/cloudinit/net/sysconfig.py",
line 395, in render_network_state
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: existing_dns_path=dns_path)
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: File
"/usr/lib/python2.7/site-packages/cloud_init-0.7.7-py2.7.egg/cloudinit/net/sysconfig.py",
line 338, in _render_dns
Sep 06 13:26:03 testing02.novalocal cloud-init[362]:
content.add_nameserver(nameserver)
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: File
"/usr/lib/python2.7/site-packages/cloud_init-0.7.7-py2.7.egg/cloudinit/distros/parsers/resolv_conf.py",
line 96, in add_nameserver
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: "'3' maximum name
servers") % (ns))
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: ValueError: Adding
u'172.17.48.4' would go beyond the '3' maximum name servers
Sep 06 13:26:03 testing02.novalocal cloud-init[362]:
------------------------------------------------------------
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: [CLOUDINIT]
util.py[DEBUG]: Reading from /proc/uptime (quiet=False)
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: [CLOUDINIT]
util.py[DEBUG]: Read 10 bytes from /proc/uptime
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: [CLOUDINIT]
util.py[DEBUG]: cloud-init mode 'init' took 0.509 seconds (0.51)
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: [CLOUDINIT]
handlers.py[DEBUG]: finish: init-local: SUCCESS: searching for local datasources
Sep 06 13:26:03 testing02.novalocal systemd[1]: cloud-init-local.service: main
process exited, code=exited, status=1/FAILURE
Sep 06 13:26:03 testing02.novalocal systemd[1]: Failed to start Initial
cloud-init job (pre-networking).
Sep 06 13:26:03 testing02.novalocal systemd[1]: Unit cloud-init-local.service
entered failed state.
Sep 06 13:26:03 testing02.novalocal systemd[1]: cloud-init-local.service failed.
On Ubuntu the name servers are added to /etc/network/interfaces.d/50
-cloud-init.cfg and resolvconf deals with setting the appropriate
amount.
I believe that instead of raising a ValueError it should instead just
accept the first three it receives. There is currently not a change I
can make in my cloud to limit the amount of resolvers sent down because
not all VM's are on both networks, and having a minimal of two DNS
servers is still best practice.
** Affects: cloud-init
Importance: Undecided
Status: New
** Tags: centos rhel
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https://bugs.launchpad.net/bugs/1620796
Title:
Don't fail if attempting to add more resolvers
Status in cloud-init:
New
Bug description:
I have multiple network interfaces in OpenStack. Each defines 2
resolvers. This goes over 3 resolvers and on RHEL that leads to the
following traceback:
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: [CLOUDINIT]
util.py[DEBUG]: Read 140 bytes from /etc/resolv.conf
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: [CLOUDINIT]
util.py[WARNING]: failed stage init-local
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: 2016-09-06 13:26:03,786
- util.py[WARNING]: failed stage init-local
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: [CLOUDINIT]
util.py[DEBUG]: failed stage init-local
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: failed run of stage
init-local
Sep 06 13:26:03 testing02.novalocal cloud-init[362]:
------------------------------------------------------------
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: Traceback (most recent
call last):
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: File
"/usr/lib/python2.7/site-packages/cloud_init-0.7.7-py2.7.egg/cloudinit/cmd/main.py",
line 530, in status_wrapper
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: ret = functor(name, args)
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: File
"/usr/lib/python2.7/site-packages/cloud_init-0.7.7-py2.7.egg/cloudinit/cmd/main.py",
line 277, in main_init
Sep 06 13:26:03 testing02.novalocal cloud-init[362]:
init.apply_network_config(bring_up=bool(mode != sources.DSMODE_LOCAL))
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: File
"/usr/lib/python2.7/site-packages/cloud_init-0.7.7-py2.7.egg/cloudinit/stages.py",
line 652, in apply_network_config
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: return
self.distro.apply_network_config(netcfg, bring_up=bring_up)
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: File
"/usr/lib/python2.7/site-packages/cloud_init-0.7.7-py2.7.egg/cloudinit/distros/__init__.py",
line 162, in apply_network_config
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: dev_names =
self._write_network_config(netconfig)
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: File
"/usr/lib/python2.7/site-packages/cloud_init-0.7.7-py2.7.egg/cloudinit/distros/rhel.py",
line 71, in _write_network_config
Sep 06 13:26:03 testing02.novalocal cloud-init[362]:
self._net_renderer.render_network_state("/", ns)
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: File
"/usr/lib/python2.7/site-packages/cloud_init-0.7.7-py2.7.egg/cloudinit/net/sysconfig.py",
line 395, in render_network_state
Sep 06 13:26:03 testing02.novalocal cloud-init[362]:
existing_dns_path=dns_path)
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: File
"/usr/lib/python2.7/site-packages/cloud_init-0.7.7-py2.7.egg/cloudinit/net/sysconfig.py",
line 338, in _render_dns
Sep 06 13:26:03 testing02.novalocal cloud-init[362]:
content.add_nameserver(nameserver)
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: File
"/usr/lib/python2.7/site-packages/cloud_init-0.7.7-py2.7.egg/cloudinit/distros/parsers/resolv_conf.py",
line 96, in add_nameserver
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: "'3' maximum name
servers") % (ns))
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: ValueError: Adding
u'172.17.48.4' would go beyond the '3' maximum name servers
Sep 06 13:26:03 testing02.novalocal cloud-init[362]:
------------------------------------------------------------
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: [CLOUDINIT]
util.py[DEBUG]: Reading from /proc/uptime (quiet=False)
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: [CLOUDINIT]
util.py[DEBUG]: Read 10 bytes from /proc/uptime
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: [CLOUDINIT]
util.py[DEBUG]: cloud-init mode 'init' took 0.509 seconds (0.51)
Sep 06 13:26:03 testing02.novalocal cloud-init[362]: [CLOUDINIT]
handlers.py[DEBUG]: finish: init-local: SUCCESS: searching for local datasources
Sep 06 13:26:03 testing02.novalocal systemd[1]: cloud-init-local.service:
main process exited, code=exited, status=1/FAILURE
Sep 06 13:26:03 testing02.novalocal systemd[1]: Failed to start Initial
cloud-init job (pre-networking).
Sep 06 13:26:03 testing02.novalocal systemd[1]: Unit cloud-init-local.service
entered failed state.
Sep 06 13:26:03 testing02.novalocal systemd[1]: cloud-init-local.service
failed.
On Ubuntu the name servers are added to /etc/network/interfaces.d/50
-cloud-init.cfg and resolvconf deals with setting the appropriate
amount.
I believe that instead of raising a ValueError it should instead just
accept the first three it receives. There is currently not a change I
can make in my cloud to limit the amount of resolvers sent down
because not all VM's are on both networks, and having a minimal of two
DNS servers is still best practice.
To manage notifications about this bug go to:
https://bugs.launchpad.net/cloud-init/+bug/1620796/+subscriptions
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