Commit graph

662 commits

Author SHA1 Message Date
Antoine Legrand
5f7607412b Add default var role 2017-02-23 12:07:17 +01:00
Bogdan Dobrelya
f2a4619c57 Align LB defaults with the HA docs
Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
2017-02-23 10:32:44 +01:00
Bogdan Dobrelya
712872efba Rework inventory all by real groups' vars
* Leave all.yml to keep only optional vars
* Store groups' specific vars by existing group names
* Fix optional vars casted as mandatory (add default())
* Fix missing defaults for an optional IP var
* Relink group_vars for terraform to reflect changes

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
2017-02-23 09:43:42 +01:00
Matthew Mosesohn
d821448e2f Merge branch 'master' into synthscale 2017-02-21 22:17:43 +03:00
Matthew Mosesohn
634e6a381c Merge pull request #1043 from rutsky/patch-3
fix typos in azure docs
2017-02-20 20:24:05 +03:00
Matthew Mosesohn
ce4eefff6a Use first kube-master to check results 2017-02-18 14:11:51 +04:00
Matthew Mosesohn
9c1701f2aa Add synthetic scale deployment mode
New deploy modes: scale, ha-scale, separate-scale
Creates 200 fake hosts for deployment with fake hostvars.

Useful for testing certificate generation and propagation to other
master nodes.

Updated test cases descriptions.
2017-02-18 14:09:55 +04:00
Antoine Legrand
b84cc14694 Merge pull request #1029 from mattymo/graceful
Add graceful upgrade process
2017-02-17 21:24:32 +01:00
Vladimir Rutsky
a84175b3b9 fix typo: "infrastructore" 2017-02-17 23:27:38 +04:00
Vladimir Rutsky
438b4e9625 fix typos in azure docs 2017-02-17 21:39:22 +04:00
Matthew Mosesohn
97ebbb9672 Add graceful upgrade process
Based on #718 introduced by rsmitty.

Includes all roles and all options to support deployment of
new hosts in case they were added to inventory.

Main difference here is that master role is evaluated first
so that master components get upgraded first.

Fixes #694
2017-02-16 17:18:38 +03:00
Matthew Mosesohn
2d65554cb9 Change default network plugin to Calico 2017-02-15 16:15:22 +03:00
Hung Nguyen Viet
d8f46c4410 Highlight important action 2017-02-14 17:18:25 +07:00
Hung Nguyen Viet
d0757ccc5e Fix typo 2017-02-14 17:18:22 +07:00
Matthew Mosesohn
779f20d64e Merge pull request #1010 from bogdando/fixes
Fix misleading HA docs
2017-02-10 13:01:29 +03:00
Bogdan Dobrelya
ed1ab11001 Fix misleading HA docs
Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
2017-02-10 10:28:27 +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
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
Josh Conant
245e05ce61 Vault security hardening and role isolation 2017-02-08 21:41:36 +00:00
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
fd30131dc2 Revert "Drop linux capabilities and rework users/groups" 2017-02-06 15:58:54 +03:00
Bogdan Dobrelya
b7bf502e02 Merge pull request #978 from rutsky/patch-1
remove extra `~`
2017-02-06 12:07:54 +01:00
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
Vladimir Rutsky
b638c89556 remove extra ~ 2017-02-06 15:05:24 +04:00
Antoine Legrand
d818ac1d59 Update roadmap.md 2017-02-04 23:23:24 +01:00
Bogdan Dobrelya
cd25bfca91 Merge pull request #884 from mattymo/inventory_builder_scale
Add scale thresholds to split etcd and k8s-masters
2017-01-20 09:34:45 +01:00
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
f742fc3dd1 Add scale thresholds to split etcd and k8s-masters
Also adds calico-rr group if there are standalone etcd nodes.
Now if there are 50 or more nodes, 3 etcd nodes will be standalone.
If there are 200 or more nodes, 2 kube-masters will be standalone.
If thresholds are exceeded, kube-node group cannot add nodes that
belong to etcd or kube-master groups (according to above statements).
2017-01-19 17:30:56 +03:00
Greg Althaus
0022a2b29e Add doc updates. 2017-01-17 13:15:48 -06:00
Bogdan Dobrelya
caab0cdf27 Docs updates
Fix mismatching inventory examples.
Add command examples.
Clarify groups use cases.

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
2017-01-11 15:39:35 +01:00
Bogdan Dobrelya
6fb6947feb Fix inventory generator link
Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
2017-01-10 17:02:28 +01:00
Bogdan Dobrelya
3c107ef4dc Fix docs formatting
Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
2017-01-09 17:53:05 +01:00
Bogdan Dobrelya
a5f93d6013 Merge pull request #862 from bogdando/docs
Update docs
2017-01-09 17:43:36 +01:00
Bogdan Dobrelya
e9518072a8 Update docs
Link docs to README, update README with recent info.
Update comparsions, add kubeadm vs kargo.
Better describe variables precedence UX impact.

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
2017-01-09 16:32:55 +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
Bogdan Dobrelya
4a2abc1a46 Merge pull request #845 from bogdando/docs
Comment cloud providers private networks use cases
2017-01-03 10:50:39 +01:00
Bogdan Dobrelya
031cf565ec Comment cloud providers private networks use cases
Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
2017-01-02 11:40:56 +01:00
Bogdan Dobrelya
5ec4efe88e Merge pull request #814 from swizzlr/patch-1
Add section describing Kargo vs Kops
2016-12-30 13:58:28 +01:00
Thomas Catterall
b902110d75 Create comparisons.md 2016-12-29 19:41:11 +00:00
Bogdan Dobrelya
a56d9de502 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
Bogdan Dobrelya
bb0c3537cb Do not forward bogus domains for upstream resolvers
Also fix kube log level 4 to log dnsmasq queries.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-12-23 11:53:14 +01:00
Matthew Mosesohn
36a5143478 Merge pull request #804 from mattymo/inventory_builder
Add inventory builder python script
2016-12-23 13:22:41 +03:00
Matthew Mosesohn
7b86b87dca Add inventory builder python script
Includes tox support for running unit tests.
Small note added to getting-started guide for using
inventory_builder.py

Also adds manual-only unit test.
2016-12-23 13:00:56 +03:00
Antoine Legrand
ac295de64c Merge pull request #812 from mattymo/vars_doc
Document commonly used Kargo vars
2016-12-22 18:01:23 +01:00
Matthew Mosesohn
111571b67a Document commonly used Kargo vars 2016-12-22 19:57:39 +03:00
Bogdan Dobrelya
c456a311d6 Add coreos-alpha weave manual CI builds
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-12-22 11:00:31 +01:00
Bogdan Dobrelya
f10d1327d4 Revert "Do not forward private domains for upstream resolvers" 2016-12-21 15:24:17 +01:00
Bogdan Dobrelya
b8bc8eee41 Add download_always_pull check and sha256 for docker images
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-12-20 17:02:09 +01:00
Bogdan Dobrelya
11380769cd Merge pull request #722 from bogdando/dnsmasq_armors
Do not forward private domains for upstream resolvers
2016-12-20 14:25:17 +01:00
Bogdan Dobrelya
8d5da5cfca Add gitlab CI auto builds for triggers
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-12-20 11:23:13 +01:00
Bogdan Dobrelya
101864c050 Do not forward private domains for upstream resolvers
Also fix kube log level 4 to log dnsmasq queries.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
Co-authored-by: Matthew Mosesohn <mmosesohn@mirantis.com>
2016-12-19 11:01:41 +01:00
Antoine Legrand
768fe05eea Merge pull request #704 from vwfs/bastion_hosts
Add support for bastion hosts
2016-12-17 12:08:49 +01:00
Bogdan Dobrelya
046f3eebcb Rework Gitlab pipeline stages for PRs/merges
Run 1 of each part1/2/special for Gitlab CI only for PRs
Remaining 2/3 of each stage are manual steps for master only (merges)

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-12-16 16:33:14 +01:00
Bogdan Dobrelya
ad68b23d8a Manual steps for Gitlab CI pipeline
* Reduce default testcase to 2 nodes, add HA case.
* Adjust gen_matrix script for Travis/Gitlab CIs.
* Enable netchecker deploy foro gitlab CI.
* Sync other things from travis matrix and reorder them as build steps
  for pull requests, master branch, auto/manual.
* Do auto-step1 from part1 and manual step2,3 for branches/PRs.
* Do manual steps from part2, special for master merges.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-12-15 17:23:18 +01:00
Bogdan Dobrelya
114ab5e4e6 Merge pull request #721 from adidenko/calico-add-rr
Add calico/routereflector support
2016-12-14 17:22:00 +01:00
Bogdan Dobrelya
1551fe01f9 Rebalance CI GCE zones for better CPU per region usage
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-12-14 16:23:57 +01:00
Aleksandr Didenko
d57c27ffcf Add calico/routereflector support
Add BGP route reflectors support in order to optimize BGP topology
for deployments with Calico network plugin.

Also bump version of calico/ctl for some bug fixes.
2016-12-14 13:44:10 +01:00
Alexander Block
96640e68e2 Add tags for bastion-ssh-config 2016-12-13 17:29:47 +01:00
Alexander Block
3e007df97c Add documentation about bastion hosts 2016-12-13 17:29:47 +01:00
Antoine Legrand
b4ce221002 Merge pull request #730 from vwfs/azurerm
Add Azure Resource Group templates and scripts to contrib
2016-12-13 17:07:41 +01:00
Alexander Block
94ce99eb0a Add documentation link for contrib/azurerm 2016-12-13 16:30:52 +01:00
Bogdan Dobrelya
0515814e0c Fix resolvconf
Do not repeat options and nameservers in the dhclient hooks.
Do not prepend nameservers for dhclient but supersede and fail back
to the upstream_dns_resolvers then default_resolver. Fixes order of
nameservers placement, which is cluster DNS ip goes always first.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-12-13 15:48:53 +01:00
Bogdan Dobrelya
4e721bfd9d Merge pull request #667 from bogdando/fix_dns
Rework DNS stack to meet hostnet pods needs
2016-12-12 21:38:13 +01:00
Bogdan Dobrelya
3117858dcd Rework DNS stack to meet hostnet pods needs
* For Debian/RedHat OS families (with NetworkManager/dhclient/resolvconf
  optionally enabled) prepend /etc/resolv.conf with required nameservers,
  options, and supersede domain and search domains via the dhclient/resolvconf
  hooks.

* Drop (z)nodnsupdate dhclient hook and re-implement it to complement the
  resolvconf -u command, which is distro/cloud provider specific.
  Update docs as well.

* Enable network restart to apply and persist changes and simplify handlers
  to rely on network restart only. This fixes DNS resolve for hostnet K8s
  pods for Red Hat OS family. Skip network restart for canal/calico plugins,
  unless https://github.com/projectcalico/felix/issues/1185 fixed.

* Replace linefiles line plus with_items to block mode as it's faster.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
Co-authored-by: Matthew Mosesohn <mmosesohn@mirantis.com>
2016-12-12 17:43:47 +01:00
Bogdan Dobrelya
774f4dbbf7 Merge branch 'master' into tags_download 2016-12-12 11:44:00 +01:00
Bogdan Dobrelya
a15d626771 Preconfigure DNS stack and docker early
In order to enable offline/intranet installation cases:
* Move DNS/resolvconf configuration to preinstall role. Remove
  skip_dnsmasq_k8s var as not needed anymore.

* Preconfigure DNS stack early, which may be the case when downloading
  artifacts from intranet repositories. Do not configure
  K8s DNS resolvers for hosts /etc/resolv.conf yet early (as they may be
  not existing).

* Reconfigure K8s DNS resolvers for hosts only after kubedns/dnsmasq
  was set up and before K8s apps to be created.

* Move docker install task to early stage as well and unbind it from the
  etcd role's specific install path. Fix external flannel dependency on
  docker role handlers. Also fix the docker restart handlers' steps
  ordering to match the expected sequence (the socket then the service).

* Add default resolver fact, which is
  the cloud provider specific and remove hardcoded GCE resolver.

* Reduce default ndots for hosts /etc/resolv.conf to 2. Multiple search
  domains combined with high ndots values lead to poor performance of
  DNS stack and make ansible workers to fail very often with the
  "Timeout (12s) waiting for privilege escalation prompt:" error.

* Update docs.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-12-09 17:30:55 +01:00
Bogdan Dobrelya
fd9b26675e More granular control for download/upload images/binaries
Add upload tag allow users to exclude distributing images across nodes
when running with the download tag set.
Add related tags and update docs as well.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-12-09 17:04:55 +01:00
Bogdan Dobrelya
8cc84e132a Add tags
Add tags to allow more granular tasks filtering.
Add generator script for MD formatted tags found.
Add docs for tags how-to.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-12-09 12:14:28 +01:00
Matthew Mosesohn
fc769eb870 Merge pull request #693 from kubernetes-incubator/upgrades-doc
Add document outlining upgrade process
2016-12-08 13:02:55 +03:00
Bogdan Dobrelya
8eb26c21be Merge pull request #692 from bogdando/gce_fixes
Change GCE sysctls placement and docs
2016-12-07 16:17:30 +01:00
Matthew Mosesohn
3c66e4cdba Add document outlining upgrade process 2016-12-07 16:33:08 +03:00
Bogdan Dobrelya
f0f2b81276 Change GCE sysctls placement and docs
Override GCE sysctl in /etc/sysctl.d/99-sysctl.conf instead of
the /etc/sysctl.d/11-gce-network-security.conf. It is recreated
by GCE, f.e. if gcloud CLI invokes some security related changes,
thus losing customizations we want to be persistent.

Update cloud providers firewall requirements in calico docs.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-12-07 12:53:45 +01:00
Aleksandr Didenko
b0079ccd77 Calico: fix peering with routers for new version
In new `calicoctl` version nodes peering with routers is broken.
We need to use predictable node names for calico-node and the
same names in calico `bgpPeer` resources and CNI.
2016-12-06 17:17:39 +01:00
Bogdan Dobrelya
a2331fec55 Reduce CI test matrix
Reduce the test cases from 15 to 9, bearing in mind that:
* Disable weave/coreos gate unless its deployment fixed
* If debian/centos7 fails with net plugin X, ubuntu-xenial/rhel-7 will
  likely fail as well
* Canal also covers the flannel plugin deployment, but keep at least one
  of the flannel plugin deployment, unless it's superseded and removed.
* Keep at least one of each OS/plugin family to be tested in the separate
  nodes layout
* Keep at least one of each OS family to be tested against each of the
  plugin types in default nodes layout
* Rebalance GCE regions for instances, replace asia to eu/us as they
  are the longest running jobs.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-11-29 18:53:43 +01:00
Antoine Legrand
b6872a0be3 Merge pull request #657 from smelchior/master
add  azure support for kargo
2016-11-29 12:20:49 +01:00
Bogdan Dobrelya
7eab889c07 Switch to standard debian/centos/rhel for CI
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-11-29 10:25:07 +01:00
Sebastian Melchior
bb55f68f95 add basic azure support for kargo 2016-11-29 10:20:28 +01:00
Antoine Legrand
5b382668f5 Merge pull request #529 from bogdando/netcheck
Add a k8s app for advanced e2e netcheck for DNS
2016-11-28 15:26:30 +01:00
Bogdan Dobrelya
b7692fad09 Add advanced net check for DNS K8s app
* Add an option to deploy K8s app to test e2e network connectivity
  and cluster DNS resolve via Kubedns for nethost/simple pods
  (defaults to false).
* Parametrize existing k8s apps templates with kube_namespace and
  kube_config_dir instead of hardcode.
* For CoreOS, ensure nameservers from inventory to be put in the
  first place to allow hostnet pods connectivity via short names
  or FQDN and hostnet agents to pass as well, if netchecker
  deployed.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-11-28 13:23:25 +01:00
Bogdan Dobrelya
2d18e19263 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
aa447585c4 Fix download dnsmasq image dependency on docker
When download_run_once with download_localhost is used, docker is
expected to be running on the delegate localhost. That may be not
the case for a non localhost delegate, which is the kube-master
otherwise. Then the dnsmasq role, had it been invoked early before
deployment starts, would fail because of the missing docker dependency.

* Fix that dependency on docker and do not pre download dnsmasq image
  for the dnsmasq role, if download_localhost is disabled.
* Remove become: false for docker CLI invocation because that's not
  the common pattern to allow users access docker CLI w/o sudo.
* Fix opt bin path hack for localhost delegate to ignore errors when
  it fails with "sudo password required" otherwise.
* Describe download_run_once with download_localhost use case in docs
  as well.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-11-24 18:31:26 +01:00
Bogdan Dobrelya
dc58159d16 Merge pull request #621 from xenolog/calico_network_backend
Add ability to define network backend for Calico.
2016-11-22 14:55:47 +01:00
Sergey Vasilenko
f6d69d0a00 Add ability to define network backend for Calico.
This patch introduce `calico_network_backend` global variable,
which allow to describe alternative network backend.
Default behavior is unchanged.
2016-11-18 16:38:18 +03:00
Alexandre Bourget
5b9b2c0973 Update roadmap.md 2016-11-17 12:44:30 -05:00
Bogdan Dobrelya
e4d240b1b7 Improve CI test matrix
For Travis CI and GCE, add a naive generator script into a markdown table.
Add GCE/Travis CI matrix docs.
Add CoreOS test cases.
Rework existing cases w/o loosing of coverage.
Rework postinstall tests to support CoreOS as well.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-11-15 18:17:30 +01:00
Artem Panchenko
c58bd33af7 Support new version of 'calicoctl' (>=v1.0.0)
Since version 'v1.0.0-beta' calicoctl is written
in Go and its API differs from old Python based
utility. Added support of both old and new version
of the utility.
2016-11-10 17:11:29 +02:00
Matthew Mosesohn
95b460ae94 Remove etcd-proxy from all nodes and use etcd multiaccess 2016-11-09 13:31:12 +03:00
Smaine Kahlouch
7e81855e24 Merge pull request #554 from bogdando/kubeadm_adoption
Update roadmap for the kubeadm LCM track
2016-10-18 13:52:55 +02:00
Smana
6113a3f350 update roadmap, kubeadm adoption 2016-10-18 13:51:36 +02:00
Bogdan Dobrelya
7d6fc1d680 Update roadmap for the kubeadm LCM track
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-10-18 13:44:45 +02:00
Bogdan Dobrelya
40de468413 Update ha docs
Fix mismatch in code and docs, see
https://github.com/kubespray/kargo/pull/528

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-10-17 15:42:30 +02:00
Smaine Kahlouch
c490e5c8a1 Merge pull request #528 from kubespray/proxy-nginx
Use nginx proxy on non-master nodes to proxy apiserver traffic
2016-10-05 19:19:32 +02:00
Matthew Mosesohn
84052ff0b6 use nginx proxy on non-master nodes to proxy apiserver traffic
Also adds all masters by hostname and localhost/127.0.0.1 to
apiserver SSL certificate.

Includes documentation update on how localhost loadbalancer works.
2016-10-05 20:09:10 +03:00
keglevich3
d548cb6ac2 changed to the correct link 2016-09-29 17:44:24 +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
7dde23e60b Add more DNS docs
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-09-26 13:47:34 +02:00
Bogdan Dobrelya
ec0317e0e4 Adjust DNS picture
Reflect changes made to DNS setup

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-09-23 17:11:07 +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
Sean M. Collins
42a5055d3c Rename large-deploymets.md to large-deployments.md
Filename was a typo
2016-09-19 11:51:37 -04:00
Bogdan Dobrelya
390764c2b4 Add retry_stagger var for failed download/pushes.
* Add the retry_stagger var to tweak push and retry time strategies.
* Add large deployments related docs.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-09-15 16:43:58 +02:00
Spencer Smith
4e76bced53 merge with current master, update typos in doc 2016-08-24 09:56:42 -04:00
Spencer Smith
60f263b629 updated to no longer handle gce as cloud-provider. provided aws setup doc 2016-08-24 09:48:32 -04:00
Bogdan Dobrelya
731d32afda Add HA/LB endpoints for kube-apiserver
* Add HA docs for API server.
* Add auto-evaluated internal endpoints and clarify the loadbalancer_apiserver
vars and usecases.
* Use facts for kube_apiserver to not repeat code and enable LB endpoints use.
* Use /healthz check for the wait-for apiserver.
* Use the single endpoint for kubelet instead of the list of apiservers
* Specify kube_apiserver_count to for HA layout

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-07-25 17:25:45 +02:00
Bogdan Dobrelya
7d816aecf1 Add ha docs
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-07-22 14:44:36 +02:00
Bogdan Dobrelya
32cd6e99b2 Add etcd proxy support
* Enforce a etcd-proxy role to a k8s-cluster group members. This
provides an HA layout for all of the k8s cluster internal clients.
* Proxies to be run on each node in the group as a separate etcd
instances with a readwrite proxy mode and listen the given endpoint,
which is either the access_ip:2379 or the localhost:2379.
* A notion for the 'kube_etcd_multiaccess' is: ignore endpoints and
loadbalancers and use the etcd members IPs as a comma-separated
list. Otherwise, clients shall use the local endpoint provided by a
etcd-proxy instances on each etcd node. A Netwroking plugins always
use that access mode.
* Fix apiserver's etcd servers args to use the etcd_access_endpoint.
* Fix networking plugins flannel/calico to use the etcd_endpoint.
* Fix name env var for non masters to be set as well.
* Fix etcd_client_url was not used anywhere and other etcd_* facts
evaluation was duplicated in a few places.
* Define proxy modes only in the env file, if not a master. Del
an automatic proxy mode decisions for etcd nodes in init/unit scripts.
* Use Wants= instead of Requires= as "This is the recommended way to
hook start-up of one unit to the start-up of another unit"
* Make apiserver/calico Wants= etcd-proxy to keep it always up

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
Co-authored-by: Matthew Mosesohn <mmosesohn@mirantis.com>
2016-07-19 14:09:40 +02:00
Jean-Christophe Sirot
a2bdcabc33 Some additional roadmap items 2016-07-08 16:32:01 +02:00
Smana
1e8ee99d1a a small change in the roadmap 2016-07-08 09:40:12 +02:00
Smaine Kahlouch
5fdea4b947 first version of the roadmap 2016-07-08 09:21:33 +02:00
Jean-Christophe Sirot
e2d6b92370 Add CI test matrix 2016-07-07 10:35:59 +02:00
Smaine Kahlouch
585102ee20 add documentation 2016-07-04 14:37:30 +02:00