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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.
pull/1020/head
Matthew Mosesohn 2017-02-13 14:13:28 +03:00
parent b84cc14694
commit 9c1701f2aa
7 changed files with 71 additions and 24 deletions
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1
.gitignore vendored
View File

@ -1,6 +1,7 @@
.vagrant
*.retry
inventory/vagrant_ansible_inventory
inventory/group_vars/fake_hosts.yml
temp
.idea
.tox

15
.gitlab-ci.yml
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@ -124,6 +124,7 @@ before_script:
-e local_release_dir=${PWD}/downloads
-e resolvconf_mode=${RESOLVCONF_MODE}
-e vault_deployment_type=${VAULT_DEPLOYMENT}
--limit "all:!fake_hosts"
cluster.yml
# Repeat deployment if testing upgrade
@ -150,18 +151,19 @@ before_script:
-e resolvconf_mode=${RESOLVCONF_MODE}
-e weave_cpu_requests=${WEAVE_CPU_LIMIT}
-e weave_cpu_limit=${WEAVE_CPU_LIMIT}
--limit "all:!fake_hosts"
$PLAYBOOK;
fi
# Tests Cases
## Test Master API
- ansible-playbook -i inventory/inventory.ini -e ansible_python_interpreter=${PYPATH} -u $SSH_USER -e ansible_ssh_user=$SSH_USER $SSH_ARGS -b --become-user=root tests/testcases/010_check-apiserver.yml $LOG_LEVEL
- ansible-playbook -i inventory/inventory.ini -e ansible_python_interpreter=${PYPATH} -u $SSH_USER -e ansible_ssh_user=$SSH_USER $SSH_ARGS -b --become-user=root --limit "all:!fake_hosts" tests/testcases/010_check-apiserver.yml $LOG_LEVEL
## Ping the between 2 pod
- ansible-playbook -i inventory/inventory.ini -e ansible_python_interpreter=${PYPATH} -u $SSH_USER -e ansible_ssh_user=$SSH_USER $SSH_ARGS -b --become-user=root tests/testcases/030_check-network.yml $LOG_LEVEL
- ansible-playbook -i inventory/inventory.ini -e ansible_python_interpreter=${PYPATH} -u $SSH_USER -e ansible_ssh_user=$SSH_USER $SSH_ARGS -b --become-user=root --limit "all:!fake_hosts" tests/testcases/030_check-network.yml $LOG_LEVEL
## Advanced DNS checks
- ansible-playbook -i inventory/inventory.ini -e ansible_python_interpreter=${PYPATH} -u $SSH_USER -e ansible_ssh_user=$SSH_USER $SSH_ARGS -b --become-user=root tests/testcases/040_check-network-adv.yml $LOG_LEVEL
- ansible-playbook -i inventory/inventory.ini -e ansible_python_interpreter=${PYPATH} -u $SSH_USER -e ansible_ssh_user=$SSH_USER $SSH_ARGS -b --become-user=root --limit "all:!fake_hosts" tests/testcases/040_check-network-adv.yml $LOG_LEVEL
## Idempotency checks 1/5 (repeat deployment)
- >
@ -178,6 +180,7 @@ before_script:
-e local_release_dir=${PWD}/downloads
-e etcd_deployment_type=${ETCD_DEPLOYMENT}
-e kubelet_deployment_type=${KUBELET_DEPLOYMENT}
--limit "all:!fake_hosts"
cluster.yml;
fi
@ -186,6 +189,7 @@ before_script:
if [ "${IDEMPOT_CHECK}" = "true" ]; then
ansible-playbook -i inventory/inventory.ini -e ansible_python_interpreter=${PYPATH}
-u $SSH_USER -e ansible_ssh_user=$SSH_USER $SSH_ARGS -b --become-user=root
--limit "all:!fake_hosts"
tests/testcases/040_check-network-adv.yml $LOG_LEVEL;
fi
@ -198,6 +202,7 @@ before_script:
-e bootstrap_os=${BOOTSTRAP_OS}
-e ansible_python_interpreter=${PYPATH}
-e reset_confirmation=yes
--limit "all:!fake_hosts"
reset.yml;
fi
@ -216,6 +221,7 @@ before_script:
-e local_release_dir=${PWD}/downloads
-e etcd_deployment_type=${ETCD_DEPLOYMENT}
-e kubelet_deployment_type=${KUBELET_DEPLOYMENT}
--limit "all:!fake_hosts"
cluster.yml;
fi
@ -224,6 +230,7 @@ before_script:
if [ "${IDEMPOT_CHECK}" = "true" ]; then
ansible-playbook -i inventory/inventory.ini -e ansible_python_interpreter=${PYPATH}
-u $SSH_USER -e ansible_ssh_user=$SSH_USER $SSH_ARGS -b --become-user=root
--limit "all:!fake_hosts"
tests/testcases/040_check-network-adv.yml $LOG_LEVEL;
fi
@ -310,7 +317,7 @@ before_script:
KUBE_NETWORK_PLUGIN: calico
CLOUD_IMAGE: centos-7
CLOUD_REGION: europe-west1-b
CLUSTER_MODE: ha
CLUSTER_MODE: ha-scale
IDEMPOT_CHECK: "true"
.coreos_alpha_weave_ha_variables: &coreos_alpha_weave_ha_variables

41
docs/test_cases.md
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@ -4,25 +4,40 @@ Travis CI test matrix
GCE instances
-------------
Here is the test matrix for the Travis CI gates:
Here is the test matrix for the CI gates:
| Network plugin| OS type| GCE region| Nodes layout|
|-------------------------|-------------------------|-------------------------|-------------------------|
| canal| debian-8-kubespray| asia-east1-a| ha|
| canal| debian-8-kubespray| asia-east1-a| ha-scale|
| calico| debian-8-kubespray| europe-west1-c| default|
| flannel| centos-7| asia-northeast1-c| default|
| calico| centos-7| us-central1-b| ha|
| weave| rhel-7| us-east1-c| default|
| canal| coreos-stable| us-west1-b| default|
| canal| coreos-stable| us-west1-b| ha-scale|
| canal| rhel-7| asia-northeast1-b| separate|
| weave| ubuntu-1604-xenial| europe-west1-d| separate|
| calico| coreos-stable| us-central1-f| separate|
Where the nodes layout `default` is a non-HA two nodes setup with the separate `kube-node`
and the `etcd` group merged with the `kube-master`. The `separate` layout is when
there is only node of each type, which is a kube master, compute and etcd cluster member.
And the `ha` layout stands for a two etcd nodes, two masters and a single worker node,
partially intersecting though.
Node Layouts
------------
There are four node layout types: `default`, `separate`, `ha`, and `scale`.
`default` is a non-HA two nodes setup with one separate `kube-node`
and the `etcd` group merged with the `kube-master`.
`separate` layout is when there is only node of each type, which includes
a kube-master, kube-node, and etcd cluster member.
`ha` layout consists of two etcd nodes, two masters and a single worker node,
with role intersection.
`scale` layout can be combined with above layouts. It includes 200 fake hosts
in the Ansible inventory. This helps test TLS certificate generation at scale
to prevent regressions and profile certain long-running tasks. These nodes are
never actually deployed, but certificates are generated for them.
Note, the canal network plugin deploys flannel as well plus calico policy controller.
@ -40,15 +55,15 @@ GCE instances
| Stage| Network plugin| OS type| GCE region| Nodes layout
|--------------------|--------------------|--------------------|--------------------|--------------------|
| part1| calico| coreos-stable| us-west1-b| separated|
| part1| calico| coreos-stable| us-west1-b| separate|
| part1| canal| debian-8-kubespray| us-east1-b| ha|
| part1| weave| rhel-7| europe-west1-b| default|
| part1| weave| rhel-7| europe-west1-b| scale|
| part2| flannel| centos-7| us-west1-a| default|
| part2| calico| debian-8-kubespray| us-central1-b| default|
| part2| canal| coreos-stable| us-east1-b| default|
| special| canal| rhel-7| us-east1-b| separated|
| special| weave| ubuntu-1604-xenial| us-central1-b| separated|
| special| calico| centos-7| europe-west1-b| ha|
| special| canal| rhel-7| us-east1-b| separate|
| special| weave| ubuntu-1604-xenial| us-central1-b| scale|
| special| calico| centos-7| europe-west1-b| ha-scale|
| special| weave| coreos-alpha| us-west1-a| ha|
The "Stage" means a build step of the build pipeline. The steps are ordered as `part1->part2->special`.

1
roles/etcd/tasks/check_certs.yml
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@ -2,6 +2,7 @@
- name: "Check_certs | check if all certs have already been generated on first master"
stat:
path: "{{ etcd_cert_dir }}/{{ item }}"
get_md5: no
delegate_to: "{{groups['etcd'][0]}}"
register: etcdcert_master
run_once: true

14
tests/cloud_playbooks/create-gce.yml
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@ -13,7 +13,7 @@
- set_fact:
instance_names: >-
{%- if mode in ['separate', 'ha'] -%}
{%- if mode in ['separate', 'separate-scale', 'ha', 'ha-scale'] -%}
k8s-{{test_name}}-1,k8s-{{test_name}}-2,k8s-{{test_name}}-3
{%- else -%}
k8s-{{test_name}}-1,k8s-{{test_name}}-2
@ -39,6 +39,18 @@
src: ../templates/inventory-gce.j2
dest: "{{ inventory_path }}"
- name: Make group_vars directory
file:
path: "{{ inventory_path|dirname }}/group_vars"
state: directory
when: mode in ['scale', 'separate-scale', 'ha-scale']
- name: Template fake hosts group vars
template:
src: ../templates/fake_hosts.yml.j2
dest: "{{ inventory_path|dirname }}/group_vars/fake_hosts.yml"
when: mode in ['scale', 'separate-scale', 'ha-scale']
- name: Wait for SSH to come up
wait_for: host={{item.public_ip}} port=22 delay=10 timeout=180 state=started
with_items: "{{gce.instance_data}}"

3
tests/templates/fake_hosts.yml.j2 100644
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@ -0,0 +1,3 @@
ansible_default_ipv4:
address: 255.255.255.255
ansible_hostname: "{{ '{{' }}inventory_hostname}}"

16
tests/templates/inventory-gce.j2
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@ -2,12 +2,11 @@
{% set node2 = gce.instance_data[1].name %}
{{node1}} ansible_ssh_host={{gce.instance_data[0].public_ip}}
{{node2}} ansible_ssh_host={{gce.instance_data[1].public_ip}}
{% if mode is defined and mode in ["separate", "ha"] %}
{% if mode is defined and mode in ["separate", "separate-scale"] %}
{% set node3 = gce.instance_data[2].name %}
{{node3}} ansible_ssh_host={{gce.instance_data[2].public_ip}}
{% endif %}
{% if mode is defined and mode == "separate" %}
{% if mode is defined and mode in ["separate", "separate-scale"] %}
[kube-master]
{{node1}}
@ -19,7 +18,7 @@
[vault]
{{node3}}
{% elif mode is defined and mode == "ha" %}
{% elif mode is defined and mode in ["ha", "ha-scale"] %}
[kube-master]
{{node1}}
{{node2}}
@ -51,3 +50,12 @@
[k8s-cluster:children]
kube-node
kube-master
{% if mode is defined and mode in ["scale", "separate-scale", "ha-scale"] %}
[fake_hosts]
fake_scale_host[1:200]
[kube-node:children]
fake_hosts
{% endif %}