Commit graph

36 commits

Author SHA1 Message Date
Matthew Mosesohn
2778ac61a4 Add new var skip_dnsmasq_k8s
If skip_dnsmasq is set, it will still not set up dnsmasq
k8s pod. This enables independent setup of resolvconf section
before kubelet is up.
2016-10-26 17:56:15 +03:00
Bogdan Dobrelya
5fd43b7cf0 Allow subdomains of dns_domain and fix kubelet restarts
* Add a var for ndots (default 5) and put it hosts' /etc/resolv.conf.
* Poke kube dns container image to v1.7
* In order to apply changes to kubelet, notify it to
be restarted on changes made to /etc/resolv.conf. Ignore errors as the kubelet
may yet to be present up to the moment of the notification being processed.
* Remove unnecessary kubelet restart for master role as the node role ensures
it is up and running. Notify master static pods waiters for apiserver,
scheduler, controller-manager instead.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-09-27 14:32:49 +02:00
Bogdan Dobrelya
dfb9063b3f Fix docs and dns servers placement order
- Update docs and a drawing to clarify DNS setup.
- Change order of nameservers placement to match
  changes in https://github.com/kubespray/kargo/pull/501

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-09-23 16:16:00 +02:00
Bogdan Dobrelya
82ee60fe8b Make dnsmasq daemon set optional
Change additional dnsmasq opts:
- Adjust caching size and TTL
- Disable resolve conf to not create loops
- Change dnsPolicy to default (similarly to kubedns's dnsmasq). The
  ClusterFirst should not be used to not create loops
- Disable negative NXDOMAIN replies to be cached
- Make its very installation as optional step (enabled by default).
  If you don't want more than 3 DNS servers, including 1 for K8s, disable
  it.
- Add docs and a drawing to clarify DNS setup.
- Fix stdout logs for dnsmasq/kubedns app configs
- Add missed notifies to resolvconf -u handler
- Fix idempotency of resolvconf head file changes

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-09-23 12:59:06 +02:00
Matthew Mosesohn
d313be4420 Improve management of nameservers in resolv.conf
Changing nameservers now will clean up previous entries
2016-09-22 18:11:15 +03:00
Bogdan Dobrelya
d240073f65 Fix updating resolvconf
Move updating resolvconf to the network restart handler to
ensure changes applied to the /etc/resolv.conf.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-09-01 11:10:26 +02:00
Matthew Mosesohn
33c8d0a1a7 Remove search and nameserver entries from resolvconf base
These items conflict when they are provided also in head file
Fixes: #456
2016-08-30 13:14:44 +03:00
Bogdan Dobrelya
ea57ce7514 Fix resolv.conf search/nameserver
* Ensure additional nameserver/search, if defined as vars.
* Don't backup changed dhclient hooks as they are going to be
  executed by dhclient as well, which is not what we want.
* For debian OS family only:
- Rename nodnsupdate hook the resolvconf hook to be sourced always
before it.
- Ensure dhclient restarted via network restart to apply the
nodnsupdate hook.
* For rhel OS family, the fix TBD, it doesn't work the same way.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-08-24 15:31:57 +02:00
Smana
643b28f9d3 Revert "Fix resolv.conf search/nameserver"
This reverts commit 977f82c32c.
2016-08-24 12:36:25 +02:00
Bogdan Dobrelya
977f82c32c Fix resolv.conf search/nameserver
Rename nodnsupdate hook the resolvconf hook to be sourced always
before it.
Ensure dhclient restarted via network restart to apply the
nodnsupdate hook.
Ensure additional nameserver/search, if defined as vars.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-08-22 11:53:44 +02:00
dis
0fa90ec9e8 Fix resolvconf executable discovery
If resolvconf was installed and then removed, the file
/etc/resolvconf/resolv.conf.d/head remains in the filesystem

- change discovery of 'resolvconf' executable to check if it
  can be located with 'which resolvconf' command or not.
2016-08-10 17:22:33 +03:00
Matthew Mosesohn
acae5d4286 Check dnsmasq on first kube-node
kube-masters without kube-node role will not run
kube-proxy, and therefore can't check if dnsmasq
is running.

Fixes #368
2016-08-05 16:55:48 +04:00
Stig Telfer
64a39fdb86 Use var for bin dir instead of assuming /usr/local/bin
On CoreOS the binaries are not installed in /usr/local/bin.
2016-04-02 20:53:33 +01:00
teuto.net Netzdienste GmbH
457ed11b49 fixed deprecation warnings regarding bare variables 2016-03-30 10:23:43 +02:00
Smaine Kahlouch
7e6d7caf4b Dnsmasq runs on all nodes 2016-03-21 11:37:35 +01:00
ant31
6297e5ea93 Use dnsmasq inside pods 2016-03-19 23:41:27 +01:00
Antoine Legrand
b9781fa7c2 Symlink dnsmasq conf 2016-01-26 00:30:29 +01:00
Smaine Kahlouch
a5094f2a6a move /etc/hosts configuration in 'preinstall' role 2016-01-20 17:37:23 +01:00
Greg Althaus
fe5ec398bf Use IP is specified, otherwise use the ansible discovered address.
This fixes cases for use in Vagrant environments.
2016-01-20 08:34:39 -06:00
Smaine Kahlouch
b54af6b42f reduce dns timeout 2016-01-19 13:49:33 +01:00
Smaine Kahlouch
63ae6ba5b5 dnsmasq runs on all nodes 2016-01-19 10:31:47 +01:00
Smaine Kahlouch
f58b4d3dd6 dnsmasq listens on localhost 2016-01-19 10:29:33 +01:00
Smaine Kahlouch
d3a8584212 add timeout options to resolv.conf 2016-01-19 10:18:53 +01:00
Smaine Kahlouch
8127e8f8e8 Flannel running as pod 2016-01-15 13:03:27 +01:00
Smaine Kahlouch
51a0996087 fix regexp for resolv.conf 2016-01-15 12:18:03 +01:00
ant31
b769636435 Ansible 2.0 2016-01-13 16:40:24 +01:00
ant31
9c461e1018 Use inline update for resolv.conf 2016-01-05 12:31:49 +01:00
Smaine Kahlouch
1d1d8b9c28 add nodnsupdate hook for RedHat 2015-12-31 14:04:08 +01:00
Smaine Kahlouch
b72e220126 remove carriage return 2015-12-30 14:02:22 +01:00
Smaine Kahlouch
e0f460d9b5 copy template dnsmasq pod and remove handlers 2015-12-30 14:02:22 +01:00
ant31
2df70d6a3d Docker dnsmasq 2015-12-30 14:02:22 +01:00
ant31
d597f707f1 use backup file 2015-12-24 19:23:21 +01:00
Smaine Kahlouch
c91a3183d3 manage undefined vars for loadbalancing 2015-12-15 16:51:55 +01:00
Smaine Kahlouch
953f482585 kube-proxy loadbalancing, need an external loadbalancer 2015-12-15 15:20:08 +01:00
Smaine Kahlouch
b23b8aa3de dnsmasq with multi master arch 2015-12-12 19:37:08 +01:00
Smaine Kahlouch
00c562828f Initial commit 2015-10-03 22:19:50 +02:00