Commit graph

372 commits

Author SHA1 Message Date
Bogdan Dobrelya
89ae9f1f88 Merge pull request #1002 from code0x9/master
use ansible sysctl module for config ip forwarding
2017-02-10 10:40:18 +01:00
Matthew Mosesohn
2f88c9eefe Merge pull request #989 from holser/kubelet_remedy
Kubernetes Reliability Improvements
2017-02-10 09:29:29 +03:00
Sergii Golovatiuk
c07d60bc90 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
Greg Althaus
3f0c13af8a Make kubelet_load_modules always present but false.
Update code and docs for that assumption.
2017-02-09 10:25:44 -06:00
Greg Althaus
fcd78eb1f7 Due to the nsenter and other reworks, it appears that
kubelet lost the ability to load kernel modules.  This
puts that back by adding the lib/modules mount to kubelet.

The new variable kubelet_load_modules can be set to true
to enable this item.  It is OFF by default.
2017-02-09 10:02:26 -06:00
Mark Lee
e414c25fd7 follow sysctl.conf file symlink if linked 2017-02-09 18:16:52 +09:00
Mark Lee
34a71554ae use ansible sysctl module for config ip forwarding 2017-02-09 17:28:44 +09:00
Josh Conant
245e05ce61 Vault security hardening and role isolation 2017-02-08 21:41:36 +00:00
Matthew Mosesohn
0180ad7f38 Merge pull request #990 from mattymo/fix_cert_upgrade
Fix check for node-NODEID certs existence
2017-02-08 14:44:09 +03:00
Matthew Mosesohn
d587270293 Merge pull request #992 from vwfs/host_mount_dev
Host mount /dev for kubelet
2017-02-08 13:45:22 +03:00
Bogdan Dobrelya
c2bd76a22e Merge pull request #956 from adidenko/update-netchecker
Update playbooks to support new netchecker
2017-02-08 10:09:46 +01:00
Alexander Block
010fe30b53 Host mount /dev for kubelet 2017-02-08 09:55:51 +01:00
Matthew Mosesohn
e5779ab786 Fix check for node-NODEID certs existence
Fixes upgrade from pre-individual node cert envs.
2017-02-07 21:06:48 +03:00
Aleksandr Didenko
54af533b31 Update playbooks to support new netchecker
Netchecker is rewritten in Go lang with some new args instead of
env variables. Also netchecker-server no longer requires kubectl
container. Updating playbooks accordingly.
2017-02-07 15:20:34 +01:00
Matthew Mosesohn
f3a0f73588 Prevent dynamic port allocation in nodePort range
kube_apiserver_node_port_range should be accessible only
to kube-proxy and not be taken by a dynamic port allocation.

Potentially temporary if https://github.com/kubernetes/kubernetes/issues/40920
gets fixed.
2017-02-06 20:01:16 +03:00
Matthew Mosesohn
fd30131dc2 Revert "Drop linux capabilities and rework users/groups" 2017-02-06 15:58:54 +03:00
Bogdan Dobrelya
cae2982d81 Merge pull request #911 from bogdando/DROP_CAPS
Drop linux capabilities and rework users/groups
2017-02-06 12:05:51 +01:00
Bogdan Dobrelya
5a7a3f6d4a Merge pull request #949 from vmtyler/master
Fixes Support for OpenStack v3 credentials
2017-02-03 12:22:00 +01:00
Matthew Mosesohn
10f924a617 Merge pull request #927 from holser/nsenter_fix
Remove nsenter workaround
2017-02-02 18:18:15 +03:00
Sergii Golovatiuk
585afef945 Remove nsenter workaround
- Docker 1.12 and further don't need nsenter hack. This patch removes
  it.  Also, it bumps the minimal version to 1.12.

Closes #776

Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>
2017-02-02 14:38:11 +01:00
Greg Althaus
923057c1a8 This continues the DHCP hook checks. Also protect the create side
if the system doesn't have any config files at all.
2017-01-31 09:56:27 -06:00
Matthew Mosesohn
08822ec684 Fix cert distribution at scale
Use stdin instead of bash args to pass node filenames and base64 data.
Use tempfile for master cert data
2017-01-31 16:27:45 +03:00
Tyler Britten
f8ffa1601d Fixed for non-null output 2017-01-27 10:47:59 -05:00
Tyler Britten
da01bc1fbb Updated OpenStack vars to check for tenant_id (v2) and project_id (v3) 2017-01-27 10:26:20 -05:00
Xavier Lange
e5fdc63bdd Bugfix: skip cloud_config on etcd 2017-01-25 14:09:21 -08:00
Bogdan Dobrelya
cb2e5ac776 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
8ce32eb3e1 Merge pull request #905 from galthaus/async-runs
Add tasks to ensure that the first nodes have their directories for cert gen
2017-01-19 18:32:27 +03:00
Matthew Mosesohn
aae0314bda Merge pull request #904 from galthaus/nginx-port-config
Add nginx local balancer port configuration variable
2017-01-19 18:31:57 +03:00
Greg Althaus
0d44599a63 Add explicit name printing in task names for deletgated task during
cert creation
2017-01-18 14:06:50 -06:00
Matthew Mosesohn
b6c3e61603 Fix setting resolvconf when using rkt deploy mode
rkt deploy mode doesn't create {{ bin_dir }}/kubelet, so
let's rely on kubelet.env file instad.
2017-01-18 19:18:47 +03:00
Matthew Mosesohn
b2a27ed089 Fix bash completion installation 2017-01-17 20:36:58 +03:00
Greg Althaus
6905edbeb6 Add a variable that defaults to kube_apiserver_port that defines
the which port the local nginx proxy should listen on for HA
local balancer configurations.
2017-01-14 23:38:07 -06:00
Greg Althaus
6c69da1573 This PR adds/or modifies a few tasks to allow for the playbook to
be run by limit on each node without regard for order.

The changes make sure that all of the directories needed to do
certificate management are on the master[0] or etcd[0] node regardless
of when the playbook gets run on each node.  This allows for separate
ansible playbook runs in parallel that don't have to be synchronized.
2017-01-14 23:24:34 -06:00
Greg Althaus
95bf380d07 If the inventory name of the host exceeds 63 characters,
the openssl tools will fail to create signing requests because
the CN is too long.  This is mainly a problem when FQDNs are used
in the inventory file.

THis will truncate the hostname for the CN field only at the
first dot.  This should handle the issue for most cases.
2017-01-13 10:02:23 -06:00
Matthew Mosesohn
80703010bd Use only one certificate for all apiservers
https://github.com/kubernetes/kubernetes/issues/25063
2017-01-13 14:03:20 +03:00
Bogdan Dobrelya
e88c10670e Merge pull request #891 from galthaus/selinux-order
preinstall fails on AWS CentOS7 image
2017-01-13 11:51:18 +01:00
Alexander Block
1054f37765 Don't try to delete kargo specific config from dhclient when file does not exist
Also remove the check for != "RedHat" when removing the dhclient hook,
as this had also to be done on other distros. Instead, check if the
dhclienthookfile is defined.
2017-01-13 10:56:10 +01:00
Greg Althaus
f77257cf79 When running on CentOS7 image in AWS with selinux on, the order of
the tasks fail because selinux prevents ip-forwarding setting.

Moving the tasks around addresses two issues.  Makes sure that
the correct python tools are in place before adjusting of selinux
and makes sure that ipforwarding is toggled after selinux adjustments.
2017-01-12 10:12:21 -06:00
Bogdan Dobrelya
f004cc07df Merge pull request #830 from mattymo/k8sperhost
Generate individual certificates for k8s hosts
2017-01-12 12:42:14 +01:00
Alexander Block
a7bf7867d7 Add tasks to undo changes to hosts /etc/resolv.conf and dhclient configs 2017-01-11 16:56:16 +01:00
Matthew Mosesohn
3f274115b0 Generate individual certificates for k8s hosts 2017-01-11 12:58:07 +03:00
Matthew Mosesohn
3b0918981e Merge pull request #878 from bradbeam/rkt-cni
Adding /opt/cni /etc/cni to rkt run kubelet
2017-01-11 12:22:04 +03:00
Bogdan Dobrelya
d8cef34d6c Merge pull request #872 from mattymo/bug868
Bind nginx localhost proxy to localhost
2017-01-10 17:09:25 +01:00
Brad Beam
db8173da28 Adding /opt/cni /etc/cni to rkt run kubelet 2017-01-10 08:48:58 -06:00
Bogdan Dobrelya
bcdfb3cfb0 Merge pull request #793 from kubernetes-incubator/fix_dhclientconf_path
Fix wrong path of dhclient on CentOS+Azure
2017-01-10 13:23:55 +01:00
Matthew Mosesohn
e22f938ae5 Bind nginx localhost proxy to localhost
This proxy should only be listening for local connections, not 0.0.0.0.

Fixes #868
2017-01-09 17:19:54 +03:00
Bogdan Dobrelya
091b634ea1 Merge pull request #799 from kubernetes-incubator/docker_dns
Implement "dockerd --dns-xxx" based dns mode
2017-01-09 11:38:02 +01:00
Alexander Block
1d2a18b355 Introduce dns_mode and resolvconf_mode and implement docker_dns mode
Also update reset.yml to do more dns/network related cleanup.
2017-01-05 23:38:51 +01:00
Spencer Smith
4a59340182 remove assertion for family not being CoreOS 2017-01-05 13:36:25 -05:00
Bogdan Dobrelya
5af2c42bde Better fix for different CoreOS os family facts
Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
2017-01-05 16:32:08 +01:00