Contiv multi-master and other fixes

Contiv's etcd was not being deployed correctly when using more than
one master.  To make it easier to manage, it has been moved into a
k8s container.

The api proxy was hardcoded to an old version (1.1.1), and in some
environments would run into a docker error.  This has been moved into
a k8s container for easier management.

The firewall was too permissive on several ports.  Many were open to
the world when they should have only been accessible inside the
cluster.

Many of the contiv role variables were not prefixed with 'contiv',
which may end up clobbering variables from another role.  Now all the
contiv specific role variables start with 'contiv_'.

The api proxy's default self-signed certificate was bundled with the
role.  This means someone with read-only MITM access and this key
could decrypt traffic.  Granted a user defined certificate from a
trusted CA should be used in a production environment, it is still
better to generate one in each environment when one is not provided.

1 files changed, 120 insertions, 0 deletions

diff --git a/roles/contiv/tasks/api_proxy.yml b/roles/contiv/tasks/api_proxy.yml
new file mode 100644
index 000000000..8b524dd6e
--- /dev/null
+++ b/roles/contiv/tasks/api_proxy.yml
@@ -0,0 +1,120 @@
+---
+- name: API proxy | Create contiv-api-proxy openshift user
+  oc_serviceaccount:
+    state: present
+    name: contiv-api-proxy
+    namespace: kube-system
+  run_once: true
+
+- name: API proxy | Set contiv-api-proxy openshift user permissions
+  oc_adm_policy_user:
+    user: system:serviceaccount:kube-system:contiv-api-proxy
+    resource_kind: scc
+    resource_name: hostnetwork
+    state: present
+  run_once: true
+
+- name: API proxy | Create temp directory for doing work
+  command: mktemp -d /tmp/openshift-contiv-XXXXXX
+  register: mktemp
+  changed_when: False
+  # For things that pass temp files between steps, we want to make sure they
+  # run on the same node.
+  delegate_to: "{{ groups.oo_masters_to_config.0 }}"
+  run_once: true
+
+- name: API proxy | Check for existing api proxy secret volume
+  oc_obj:
+    namespace: kube-system
+    kind: secret
+    state: list
+    selector: "name=contiv-api-proxy-secret"
+  register: existing_secret_volume
+  run_once: true
+
+- name: API proxy | Generate a self signed certificate for api proxy
+  command: openssl req -new -nodes -x509 -subj "/C=US/ST=/L=/O=/CN=localhost" -days 3650 -keyout "{{ mktemp.stdout }}/key.pem" -out "{{ mktemp.stdout }}/cert.pem" -extensions v3_ca
+  when: (contiv_api_proxy_cert is not defined or contiv_api_proxy_key is not defined)
+        and not existing_secret_volume.results.results[0]['items']
+  register: created_self_signed_cert
+  delegate_to: "{{ groups.oo_masters_to_config.0 }}"
+  run_once: true
+
+- name: API proxy | Read self signed certificate file
+  command: cat "{{ mktemp.stdout }}/cert.pem"
+  register: generated_cert
+  when: created_self_signed_cert.changed
+  delegate_to: "{{ groups.oo_masters_to_config.0 }}"
+  run_once: true
+
+- name: API proxy | Read self signed key file
+  command: cat "{{ mktemp.stdout }}/key.pem"
+  register: generated_key
+  when: created_self_signed_cert.changed
+  delegate_to: "{{ groups.oo_masters_to_config.0 }}"
+  run_once: true
+
+- name: API proxy | Create api-proxy-secrets.yml from template using generated cert
+  template:
+    src: api-proxy-secrets.yml.j2
+    dest: "{{ mktemp.stdout }}/api-proxy-secrets.yml"
+  vars:
+    key: "{{ generated_key.stdout }}"
+    cert: "{{ generated_cert.stdout }}"
+  when: created_self_signed_cert.changed
+  delegate_to: "{{ groups.oo_masters_to_config.0 }}"
+  run_once: true
+
+- name: API proxy | Create api-proxy-secrets.yml from template using user defined cert
+  template:
+    src: api-proxy-secrets.yml.j2
+    dest: "{{ mktemp.stdout }}/api-proxy-secrets.yml"
+  vars:
+    key: "{{ lookup('file', contiv_api_proxy_key) }}"
+    cert: "{{ lookup('file', contiv_api_proxy_cert) }}"
+  when: contiv_api_proxy_cert is defined and contiv_api_proxy_key is defined
+  delegate_to: "{{ groups.oo_masters_to_config.0 }}"
+  run_once: true
+
+- name: API proxy | Create secret certificate volume
+  oc_obj:
+    state: present
+    namespace: "kube-system"
+    kind: secret
+    name: contiv-api-proxy-secret
+    files:
+      - "{{ mktemp.stdout }}/api-proxy-secrets.yml"
+  when: (contiv_api_proxy_cert is defined and contiv_api_proxy_key is defined)
+        or created_self_signed_cert.changed
+  delegate_to: "{{ groups.oo_masters_to_config.0 }}"
+  run_once: true
+
+- name: API proxy | Create api-proxy-daemonset.yml from template
+  template:
+    src: api-proxy-daemonset.yml.j2
+    dest: "{{ mktemp.stdout }}/api-proxy-daemonset.yml"
+  vars:
+    etcd_host: "etcd://{{ groups.oo_etcd_to_config.0 }}:{{ contiv_etcd_port }}"
+  delegate_to: "{{ groups.oo_masters_to_config.0 }}"
+  run_once: true
+
+# Always "import" this file, k8s won't do anything if it matches exactly what
+# is already in the cluster.
+- name: API proxy | Add API proxy daemonset
+  oc_obj:
+    state: present
+    namespace: "kube-system"
+    kind: daemonset
+    name: contiv-api-proxy
+    files:
+      - "{{ mktemp.stdout }}/api-proxy-daemonset.yml"
+  delegate_to: "{{ groups.oo_masters_to_config.0 }}"
+  run_once: true
+
+- name: API proxy | Delete temp directory
+  file:
+    name: "{{ mktemp.stdout }}"
+    state: absent
+  changed_when: False
+  delegate_to: "{{ groups.oo_masters_to_config.0 }}"
+  run_once: true