Commit graph

89 commits

Author SHA1 Message Date
Spencer Smith
4b955f8e9a check if cloud_provider is defined 2017-05-31 08:24:24 -04:00
Spencer Smith
4c99902a69 add direct path for cert in AWS with RHEL family 2017-05-26 17:32:50 -04:00
Matthew Mosesohn
cb52d78845 Merge pull request #1246 from holser/disable_dns_for_kube_services
Change DNS policy for kubernetes components
2017-04-20 16:12:52 +03:00
Sergii Golovatiuk
0a687a22ff Change DNS policy for kubernetes components
According to code apiserver, scheduler, controller-manager, proxy don't
use resolution of objects they created. It's not harmful to change
policy to have external resolver.

Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>
2017-04-20 11:22:57 +02:00
Hans Kristian Flaatten
12bbb243b2 Move namespace file to template directory 2017-04-19 13:37:02 +02:00
Spencer Smith
e76ed88ea2 Merge pull request #1232 from rsmitty/custom-flags
add ability for custom flags
2017-04-17 14:01:32 -04:00
Spencer Smith
1d848dc211 remove stray spaces in templating 2017-04-17 12:24:24 -04:00
Spencer Smith
daa728e3cf ensure spacing on string of flags 2017-04-17 12:13:39 -04:00
Spencer Smith
c1192b1154 update to safeguard against accidentally passing string instead of list 2017-04-17 11:09:34 -04:00
gbolo
c05d141128 allow admission control plug-ins to be easily customized 2017-04-16 22:03:45 -04:00
Spencer Smith
7656ae2887 add ability for custom flags 2017-04-14 17:33:04 -04:00
Sergii Golovatiuk
16dd412d89 Refactoring resolv.conf
- Renaming templates for netchecker
- Add dnsPolicy: ClusterFirstWithHostNet to kube-proxy

Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>
2017-04-05 09:28:01 +02:00
Sergii Golovatiuk
829b0948a3 Set ClusterFirstWithHostNet for Pods with hostnetwork: true
In kubernetes 1.6 ClusterFirstWithHostNet was added as an option. In
accordance to it kubelet will generate resolv.conf based on own
resolv.conf. However, this doesn't create 'options', thus the proper
solution requires some investigation.

This patch sets the same resolv.conf for kubelet as host

Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>
2017-04-04 16:34:13 +02:00
Vladimir Rutsky
bc30ea7582 replace non-breakable space with regular space
Non-brekable space is 0xc2 0xa0 byte sequence in UTF-8.

To find one:

    $ git grep -I -P '\xc2\xa0'

To replace with regular space:

    $ git grep -l -I -P '\xc2\xa0' | xargs sed -i 's/\xc2\xa0/ /g'

This commit doesn't include changes that will overlap with commit f1c59a91a1.
2017-03-23 00:25:01 +03:00
Aleksandr Didenko
1adf231512 Move calico-policy-controller into separate role
By default Calico CNI does not create any network access policies
or profiles if 'policy' is enabled in CNI config. And without any
policies/profiles network access to/from PODs is blocked.

K8s related policies are created by calico-policy-controller in
such case. So we need to start it as soon as possible, before any
real workloads.

This patch also fixes kube-api port in calico-policy-controller
yaml template.

Closes #1132
2017-03-17 11:21:52 +01:00
Vincent Schwarzer
ea1f072c7e Granular authentication Control
It is now possible to deactivate selected authentication methods
(basic auth, token auth) inside the cluster by adding
removing the required arguments to the Kube API Server and generating
the secrets accordingly.

The x509 authentification is currently not optional because disabling it
would affect the kubectl clients deployed on the master nodes.
2017-03-14 16:57:35 +01:00
Vincent Schwarzer
ea6bf9143f Added Support for OpenID Connect Authentication
To use OpenID Connect Authentication beside deploying an OpenID Connect
Identity Provider it is necesarry to pass additional arguments to the Kube API Server.
These required arguments were added to the kube apiserver manifest.
2017-03-06 12:40:35 +01:00
Antoine Legrand
bfe58a7750 Merge pull request #1045 from bradbeam/vsphere
Adding vsphere cloud provider support
2017-03-06 12:34:05 +01:00
Sergii Golovatiuk
d9f67a343c Allow to specify etcd backend for kube-api
Kubernetes project is about to set etcdv3 as default storage engine in
1.6. This patch allows to specify particular backend for
kube-apiserver. User may force the option to etcdv3 for new environment.
At the same time if the environment uses v2 it will continue uses it
until user decides to upgrade to v3.

Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>
2017-02-28 17:13:22 +01:00
Brad Beam
6a144213c9 Updating vsphere cloud provider support 2017-02-27 15:08:04 -06:00
Jan Jungnickel
c11f981692 Initial support for vsphere as cloud provider 2017-02-27 12:51:41 -06:00
Sergii Golovatiuk
c0d2cca45d Kubernetes Reliability Improvements
- Exclude kubelet CPU/RAM (kube-reserved) from cgroup. It decreases a
  chance of overcommitment
- Add a possibility to modify Kubelet node-status-update-frequency
- Add a posibility to configure node-monitor-grace-period,
  node-monitor-period, pod-eviction-timeout for Kubernetes controller
  manager
- Add Kubernetes Relaibility Documentation with recomendations for
  various scenarios.

Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>
2017-02-09 23:54:08 +01:00
Matthew Mosesohn
be24fab5d0 Revert "Drop linux capabilities and rework users/groups" 2017-02-06 15:58:54 +03:00
Bogdan Dobrelya
48e77cd8bb Drop linux capabilities and rework users/groups
* Drop linux capabilities for unprivileged containerized
  worlkoads Kargo configures for deployments.
* Configure required securityContext/user/group/groups for kube
  components' static manifests, etcd, calico-rr and k8s apps,
  like dnsmasq daemonset.
* Rework cloud-init (etcd) users creation for CoreOS.
* Fix nologin paths, adjust defaults for addusers role and ensure
  supplementary groups membership added for users.
* Add netplug user for network plugins (yet unused by privileged
  networking containers though).
* Grant the kube and netplug users read access for etcd certs via
  the etcd certs group.
* Grant group read access to kube certs via the kube cert group.
* Remove priveleged mode for calico-rr and run it under its uid/gid
  and supplementary etcd_cert group.
* Adjust docs.
* Align cpu/memory limits and dropped caps with added rkt support
  for control plane.

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
2017-01-20 08:50:42 +01:00
Matthew Mosesohn
3b562c494d Use only one certificate for all apiservers
https://github.com/kubernetes/kubernetes/issues/25063
2017-01-13 14:03:20 +03:00
Matthew Mosesohn
ed253e5c5a Generate individual certificates for k8s hosts 2017-01-11 12:58:07 +03:00
Bogdan Dobrelya
6e1c0cdd15 Systemd units, limits, and bin path fixes
* Add restart for weave service unit
* Reuse docker_bin_dir everythere
* Limit systemd managed docker containers by CPU/RAM. Do not configure native
  systemd limits due to the lack of consensus in the kernel community
  requires out-of-tree kernel patches.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-12-28 15:49:42 +01:00
Matthew Mosesohn
5457799aa3 Individual etcd ssl certs
Includes hooks for triggering calico, kubelet, and kube-apiserver restarts
if etcd certs changed.
2016-12-22 13:31:11 +03:00
Smaine Kahlouch
af76813bf4 Merge pull request #708 from vwfs/cloud_network
Add support for cloud-provider based networking
2016-12-14 16:23:20 +01:00
Alexander Block
5b0034c420 Add pseudo network plugin called "cloud" to use cloud provider for network
Allow to let the cloud provider configure proper routing for nodes.
2016-12-13 17:30:10 +01:00
Antoine Legrand
e22e4c02db Merge branch 'master' into standalone_kubelet 2016-12-13 17:26:21 +01:00
Alexander Block
f9807798f3 Pass --anonymous-auth to apiserver
Fixes #732
2016-12-13 17:06:53 +01:00
Bogdan Dobrelya
272b506802 Address standalone kubelet config case
Also place in global vars and do not repeat the kube_*_config_dir
and kube_namespace vars for better code maintainability and UX.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-12-13 16:35:53 +01:00
fen4o
10ce760450 add cluster-signing to kube-controller-manager
kube-controller-manager's cluster signing cert and key points by default to not
existing `/etc/kubernetes/ca/ca.pem` and `/etc/kubernetes/ca/ca.key` [docs][1]

[1]: http://kubernetes.io/docs/admin/kube-controller-manager/#options
2016-12-07 11:20:18 +02:00
Sebastian Melchior
254e02c69e add basic azure support for kargo 2016-11-29 10:20:28 +01:00
Bogdan Dobrelya
c34c49d4d9 Tune dnsmasq/kubedns limits, replicas, logging
* Add dns_replicas, dns_memory/cpu_limit/requests vars for
dns related apps.
* When kube_log_level=4, log dnsmasq queries as well.
* Add log level control for skydns (part of kubedns app).
* Add limits/requests vars for dnsmasq (part of kubedns app) and
  dnsmasq daemon set.
* Drop string defaults for kube_log_level as it is int and
  is defined in the global vars as well.
* Add docs

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-11-25 12:49:17 +01:00
Bogdan Dobrelya
1bd3d3a080 Allow pre-downloaded images to be used effectively
According to http://kubernetes.io/docs/user-guide/images/ :
By default, the kubelet will try to pull each image from the
specified registry. However, if the imagePullPolicy property
of the container is set to IfNotPresent or Never, then a local\
image is used (preferentially or exclusively, respectively).

Use IfNotPresent value to allow images prepared by the download
role dependencies to be effectively used by kubelet without pull
errors resulting apps to stay blocked in PullBackOff/Error state
even when there are images on the localhost exist.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-11-22 16:16:04 +01:00
Bogdan Dobrelya
523c9d77df Add missing liveness probe for apiserver static pod
Fix unreliable waiting for the apiserver to become ready.
Remove logfile mount to align with the rest of static pods
and because containers shall write logs to stdout only.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-11-21 13:15:51 +01:00
Maciej Filipiak
8b270f8e2b Add service-node-port-range parameter for kube-apiserver 2016-11-18 14:09:38 +01:00
Bogdan Dobrelya
813dd47808 Merge pull request #593 from bogdando/label_apps
Label k8s apps, adjust collect info commands
2016-11-10 18:09:05 +01:00
Bogdan Dobrelya
9f6c2fd32a Label k8s apps, adjust collect/upload info steps
- Drop debugs from collect-info playbook
- Drop sudo from collect-info step and add target dir var (required for travis jobs)
- Label all k8s apps, including static manifests
- Add logs for K8s apps to be collected as well
- Fix upload to GCS as a public-read tarball

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-11-10 16:05:50 +01:00
Matthew Mosesohn
0dceb685ea Add etcd TLS support 2016-11-09 18:38:28 +03:00
Matthew Mosesohn
b8ca4e4f45 Remove etcd-proxy from all nodes and use etcd multiaccess 2016-11-09 13:31:12 +03:00
Spencer Smith
5f9c20d64e update admission controllers for > 1.4 2016-11-04 12:54:35 -04:00
Artem Roma
d2e6bd153b Add possibility to enable network policy via Calico network controller
The requirements for network policy feature are described here [1]. In
order to enable it, appropriate configuration must be provided to the CNI
plug in and Calico policy controller must be set up. Beside that
corresponding extensions needed to be enabled in k8s API.

Now to turn on the feature user can define `enable_network_policy`
customization variable for Ansible.

[1] http://kubernetes.io/docs/user-guide/networkpolicies/
2016-10-10 17:22:12 +03:00
Matthew Mosesohn
5fdfc25657 Enable quorum read for apiserver
This reduces the likelihood of apiserver status updates
timing out due to etcd write conflicts.
2016-10-04 18:31:42 +03:00
Matthew Mosesohn
526a5c05e7 Remove SecurityContextDeny API plugin
This is no longer recommended for use since K8s 1.2:
http://kubernetes.io/docs/admin/admission-controllers/#is-there-a-recommended-set-of-plug-ins-to-use
2016-08-29 14:20:28 +03:00
Spencer Smith
79d749b136 merge with current master, update typos in doc 2016-08-24 09:56:42 -04:00
Spencer Smith
a2fcf0be5d updated to no longer handle gce as cloud-provider. provided aws setup doc 2016-08-24 09:48:32 -04:00
Smana
30ef4842f1 Revert "pass cloud provider flag in all cases, not just openstack"
This reverts commit f35e5e864f.
2016-08-24 14:32:54 +02:00