Merge pull request #5371 from ingvagabund/consolidate-etcd-certs-roles

Automatic merge from submit-queue

consolidate etcd certs roles

This is a starter for consolidation of all etcd like roles into a single `etcd` action-based role. I have intentionally started with the simplest one to demonstrate the steps needed to make it so and to make the review easy enough for everyone.

9 files changed, 513 insertions, 1 deletions

diff --git a/roles/etcd/meta/main.yml b/roles/etcd/meta/main.yml
index 9a955c822..d69366a39 100644
--- a/roles/etcd/meta/main.yml
+++ b/roles/etcd/meta/main.yml
@@ -18,5 +18,4 @@ galaxy_info:
 dependencies:
 - role: lib_openshift
 - role: lib_os_firewall
-- role: etcd_server_certificates
 - role: etcd_common
diff --git a/roles/etcd/tasks/ca.yml b/roles/etcd/tasks/ca.yml
new file mode 100644
index 000000000..7cda49069
--- /dev/null
+++ b/roles/etcd/tasks/ca.yml
@@ -0,0 +1,2 @@
+---
+- include: ca/deploy.yml
diff --git a/roles/etcd/tasks/ca/deploy.yml b/roles/etcd/tasks/ca/deploy.yml
new file mode 100644
index 000000000..3d32290a2
--- /dev/null
+++ b/roles/etcd/tasks/ca/deploy.yml
@@ -0,0 +1,78 @@
+---
+- name: Install openssl
+  package:
+    name: openssl
+    state: present
+  when: not etcd_is_atomic | bool
+  delegate_to: "{{ etcd_ca_host }}"
+  run_once: true
+
+- file:
+    path: "{{ item }}"
+    state: directory
+    mode: 0700
+    owner: root
+    group: root
+  with_items:
+  - "{{ etcd_ca_new_certs_dir }}"
+  - "{{ etcd_ca_crl_dir }}"
+  - "{{ etcd_ca_dir }}/fragments"
+  delegate_to: "{{ etcd_ca_host }}"
+  run_once: true
+
+- command: cp /etc/pki/tls/openssl.cnf ./
+  args:
+    chdir: "{{ etcd_ca_dir }}/fragments"
+    creates: "{{ etcd_ca_dir }}/fragments/openssl.cnf"
+  delegate_to: "{{ etcd_ca_host }}"
+  run_once: true
+
+- template:
+    dest: "{{ etcd_ca_dir }}/fragments/openssl_append.cnf"
+    src: openssl_append.j2
+    backup: true
+  delegate_to: "{{ etcd_ca_host }}"
+  run_once: true
+
+- assemble:
+    src: "{{ etcd_ca_dir }}/fragments"
+    dest: "{{ etcd_openssl_conf }}"
+  delegate_to: "{{ etcd_ca_host }}"
+  run_once: true
+
+- name: Check etcd_ca_db exist
+  stat: path="{{ etcd_ca_db }}"
+  register: etcd_ca_db_check
+  changed_when: false
+  delegate_to: "{{ etcd_ca_host }}"
+  run_once: true
+
+- name: Touch etcd_ca_db file
+  file:
+    path: "{{ etcd_ca_db }}"
+    state: touch
+  when: etcd_ca_db_check.stat.isreg is not defined
+  delegate_to: "{{ etcd_ca_host }}"
+  run_once: true
+
+- copy:
+    dest: "{{ etcd_ca_serial }}"
+    content: "01"
+    force: no
+  delegate_to: "{{ etcd_ca_host }}"
+  run_once: true
+
+- name: Create etcd CA certificate
+  command: >
+    openssl req -config {{ etcd_openssl_conf }} -newkey rsa:4096
+    -keyout {{ etcd_ca_key }} -new -out {{ etcd_ca_cert }}
+    -x509 -extensions {{ etcd_ca_exts_self }} -batch -nodes
+    -days {{ etcd_ca_default_days }}
+    -subj /CN=etcd-signer@{{ ansible_date_time.epoch }}
+  args:
+    chdir: "{{ etcd_ca_dir }}"
+    creates: "{{ etcd_ca_cert }}"
+  environment:
+    SAN: 'etcd-signer'
+  delegate_to: "{{ etcd_ca_host }}"
+  run_once: true
diff --git a/roles/etcd/tasks/client_certificates.yml b/roles/etcd/tasks/client_certificates.yml
new file mode 100644
index 000000000..2e9c078b9
--- /dev/null
+++ b/roles/etcd/tasks/client_certificates.yml
@@ -0,0 +1,2 @@
+---
+- include: client_certificates/fetch_from_ca.yml
diff --git a/roles/etcd/tasks/client_certificates/fetch_from_ca.yml b/roles/etcd/tasks/client_certificates/fetch_from_ca.yml
new file mode 100644
index 000000000..119071a72
--- /dev/null
+++ b/roles/etcd/tasks/client_certificates/fetch_from_ca.yml
@@ -0,0 +1,138 @@
+---
+- name: Ensure CA certificate exists on etcd_ca_host
+  stat:
+    path: "{{ etcd_ca_cert }}"
+  register: g_ca_cert_stat_result
+  delegate_to: "{{ etcd_ca_host }}"
+  run_once: true
+
+- fail:
+    msg: >
+      CA certificate {{ etcd_ca_cert }} doesn't exist on CA host
+      {{ etcd_ca_host }}. Apply 'etcd_ca' action from `etcd` role to
+      {{ etcd_ca_host }}.
+  when: not g_ca_cert_stat_result.stat.exists | bool
+  run_once: true
+
+- name: Check status of external etcd certificatees
+  stat:
+    path: "{{ etcd_cert_config_dir }}/{{ item }}"
+  with_items:
+  - "{{ etcd_cert_prefix }}client.crt"
+  - "{{ etcd_cert_prefix }}client.key"
+  - "{{ etcd_cert_prefix }}ca.crt"
+  register: g_external_etcd_cert_stat_result
+  when: not etcd_certificates_redeploy | default(false) | bool
+
+- set_fact:
+    etcd_client_certs_missing: "{{ true if etcd_certificates_redeploy | default(false) | bool
+                                   else (False in (g_external_etcd_cert_stat_result.results
+                                                   | default({})
+                                                   | oo_collect(attribute='stat.exists')
+                                                   | list)) }}"
+
+- name: Ensure generated_certs directory present
+  file:
+    path: "{{ etcd_generated_certs_dir }}/{{ etcd_cert_subdir }}"
+    state: directory
+    mode: 0700
+  when: etcd_client_certs_missing | bool
+  delegate_to: "{{ etcd_ca_host }}"
+
+- name: Create the client csr
+  command: >
+    openssl req -new -keyout {{ etcd_cert_prefix }}client.key
+    -config {{ etcd_openssl_conf }}
+    -out {{ etcd_cert_prefix }}client.csr
+    -reqexts {{ etcd_req_ext }} -batch -nodes
+    -subj /CN={{ etcd_hostname }}
+  args:
+    chdir: "{{ etcd_generated_certs_dir }}/{{ etcd_cert_subdir }}"
+    creates: "{{ etcd_generated_certs_dir ~ '/' ~  etcd_cert_subdir ~ '/'
+                 ~ etcd_cert_prefix ~ 'client.csr' }}"
+  environment:
+    SAN: "IP:{{ etcd_ip }},DNS:{{ etcd_hostname }}"
+  when: etcd_client_certs_missing | bool
+  delegate_to: "{{ etcd_ca_host }}"
+
+# Certificates must be signed serially in order to avoid competing
+# for the serial file.
+- name: Sign and create the client crt
+  delegated_serial_command:
+    command: >
+      openssl ca -name {{ etcd_ca_name }} -config {{ etcd_openssl_conf }}
+      -out {{ etcd_cert_prefix }}client.crt
+      -in {{ etcd_cert_prefix }}client.csr
+      -batch
+    chdir: "{{ etcd_generated_certs_dir }}/{{ etcd_cert_subdir }}"
+    creates: "{{ etcd_generated_certs_dir ~ '/' ~  etcd_cert_subdir ~ '/'
+                 ~ etcd_cert_prefix ~ 'client.crt' }}"
+  environment:
+    SAN: "IP:{{ etcd_ip }}"
+  when: etcd_client_certs_missing | bool
+  delegate_to: "{{ etcd_ca_host }}"
+
+- file:
+    src: "{{ etcd_ca_cert }}"
+    dest: "{{ etcd_generated_certs_dir}}/{{ etcd_cert_subdir }}/{{ etcd_cert_prefix }}ca.crt"
+    state: hard
+  when: etcd_client_certs_missing | bool
+  delegate_to: "{{ etcd_ca_host }}"
+
+- name: Create local temp directory for syncing certs
+  local_action: command mktemp -d /tmp/etcd_certificates-XXXXXXX
+  register: g_etcd_client_mktemp
+  changed_when: False
+  when: etcd_client_certs_missing | bool
+  become: no
+
+- name: Create a tarball of the etcd certs
+  command: >
+    tar -czvf {{ etcd_generated_certs_dir }}/{{ etcd_cert_subdir }}.tgz
+      -C {{ etcd_generated_certs_dir }}/{{ etcd_cert_subdir }} .
+  args:
+    creates: "{{ etcd_generated_certs_dir }}/{{ etcd_cert_subdir }}.tgz"
+    # Disables the following warning:
+    # Consider using unarchive module rather than running tar
+    warn: no
+  when: etcd_client_certs_missing | bool
+  delegate_to: "{{ etcd_ca_host }}"
+
+- name: Retrieve the etcd cert tarballs
+  fetch:
+    src: "{{ etcd_generated_certs_dir }}/{{ etcd_cert_subdir }}.tgz"
+    dest: "{{ g_etcd_client_mktemp.stdout }}/"
+    flat: yes
+    fail_on_missing: yes
+    validate_checksum: yes
+  when: etcd_client_certs_missing | bool
+  delegate_to: "{{ etcd_ca_host }}"
+
+- name: Ensure certificate directory exists
+  file:
+    path: "{{ etcd_cert_config_dir }}"
+    state: directory
+  when: etcd_client_certs_missing | bool
+
+- name: Unarchive etcd cert tarballs
+  unarchive:
+    src: "{{ g_etcd_client_mktemp.stdout }}/{{ etcd_cert_subdir }}.tgz"
+    dest: "{{ etcd_cert_config_dir }}"
+  when: etcd_client_certs_missing | bool
+
+- file:
+    path: "{{ etcd_cert_config_dir }}/{{ item }}"
+    owner: root
+    group: root
+    mode: 0600
+  with_items:
+  - "{{ etcd_cert_prefix }}client.crt"
+  - "{{ etcd_cert_prefix }}client.key"
+  - "{{ etcd_cert_prefix }}ca.crt"
+  when: etcd_client_certs_missing | bool
+
+- name: Delete temporary directory
+  local_action: file path="{{ g_etcd_client_mktemp.stdout }}" state=absent
+  changed_when: False
+  when: etcd_client_certs_missing | bool
+  become: no
diff --git a/roles/etcd/tasks/main.yml b/roles/etcd/tasks/main.yml
index 78e543ef1..870c11ad4 100644
--- a/roles/etcd/tasks/main.yml
+++ b/roles/etcd/tasks/main.yml
@@ -1,4 +1,6 @@
 ---
+- include: server_certificates.yml
+
 - name: Set hostname and ip facts
   set_fact:
     # Store etcd_hostname and etcd_ip such that they will be available
diff --git a/roles/etcd/tasks/server_certificates.yml b/roles/etcd/tasks/server_certificates.yml
new file mode 100644
index 000000000..f0ba58b6e
--- /dev/null
+++ b/roles/etcd/tasks/server_certificates.yml
@@ -0,0 +1,2 @@
+---
+- include: server_certificates/fetch_from_ca.yml
diff --git a/roles/etcd/tasks/server_certificates/fetch_from_ca.yml b/roles/etcd/tasks/server_certificates/fetch_from_ca.yml
new file mode 100644
index 000000000..064fe1952
--- /dev/null
+++ b/roles/etcd/tasks/server_certificates/fetch_from_ca.yml
@@ -0,0 +1,238 @@
+---
+- include: ../ca/deploy.yml
+  when:
+  - etcd_ca_setup | default(True) | bool
+
+- name: Install etcd
+  package:
+    name: "etcd{{ '-' + etcd_version if etcd_version is defined else '' }}"
+    state: present
+  when: not etcd_is_containerized | bool
+
+- name: Check status of etcd certificates
+  stat:
+    path: "{{ item }}"
+  with_items:
+  - "{{ etcd_cert_config_dir }}/{{ etcd_cert_prefix }}server.crt"
+  - "{{ etcd_cert_config_dir }}/{{ etcd_cert_prefix }}peer.crt"
+  - "{{ etcd_cert_config_dir }}/{{ etcd_cert_prefix }}ca.crt"
+  - "{{ etcd_system_container_cert_config_dir }}/{{ etcd_cert_prefix }}server.crt"
+  - "{{ etcd_system_container_cert_config_dir }}/{{ etcd_cert_prefix }}peer.crt"
+  - "{{ etcd_system_container_cert_config_dir }}/{{ etcd_cert_prefix }}ca.crt"
+  register: g_etcd_server_cert_stat_result
+  when: not etcd_certificates_redeploy | default(false) | bool
+
+- set_fact:
+    etcd_server_certs_missing: "{{ true if etcd_certificates_redeploy | default(false) | bool
+                                   else (False in (g_etcd_server_cert_stat_result.results
+                                                   | default({})
+                                                   | oo_collect(attribute='stat.exists')
+                                                   | list)) }}"
+
+- name: Ensure generated_certs directory present
+  file:
+    path: "{{ etcd_generated_certs_dir }}/{{ etcd_cert_subdir }}"
+    state: directory
+    mode: 0700
+  when: etcd_server_certs_missing | bool
+  delegate_to: "{{ etcd_ca_host }}"
+
+- name: Create the server csr
+  command: >
+    openssl req -new -keyout {{ etcd_cert_prefix }}server.key
+    -config {{ etcd_openssl_conf }}
+    -out {{ etcd_cert_prefix }}server.csr
+    -reqexts {{ etcd_req_ext }} -batch -nodes
+    -subj /CN={{ etcd_hostname }}
+  args:
+    chdir: "{{ etcd_generated_certs_dir }}/{{ etcd_cert_subdir }}"
+    creates: "{{ etcd_generated_certs_dir ~ '/' ~  etcd_cert_subdir ~ '/'
+                 ~ etcd_cert_prefix ~ 'server.csr' }}"
+  environment:
+    SAN: "IP:{{ etcd_ip }},DNS:{{ etcd_hostname }}"
+  when: etcd_server_certs_missing | bool
+  delegate_to: "{{ etcd_ca_host }}"
+
+# Certificates must be signed serially in order to avoid competing
+# for the serial file.
+- name: Sign and create the server crt
+  delegated_serial_command:
+    command: >
+      openssl ca -name {{ etcd_ca_name }} -config {{ etcd_openssl_conf }}
+      -out {{ etcd_cert_prefix }}server.crt
+      -in {{ etcd_cert_prefix }}server.csr
+      -extensions {{ etcd_ca_exts_server }} -batch
+    chdir: "{{ etcd_generated_certs_dir }}/{{ etcd_cert_subdir }}"
+    creates: "{{ etcd_generated_certs_dir ~ '/' ~  etcd_cert_subdir ~ '/'
+                 ~ etcd_cert_prefix ~ 'server.crt' }}"
+  environment:
+    SAN: "IP:{{ etcd_ip }}"
+  when: etcd_server_certs_missing | bool
+  delegate_to: "{{ etcd_ca_host }}"
+
+- name: Create the peer csr
+  command: >
+    openssl req -new -keyout {{ etcd_cert_prefix }}peer.key
+    -config {{ etcd_openssl_conf }}
+    -out {{ etcd_cert_prefix }}peer.csr
+    -reqexts {{ etcd_req_ext }} -batch -nodes
+    -subj /CN={{ etcd_hostname }}
+  args:
+    chdir: "{{ etcd_generated_certs_dir }}/{{ etcd_cert_subdir }}"
+    creates: "{{ etcd_generated_certs_dir ~ '/' ~  etcd_cert_subdir ~ '/'
+                 ~ etcd_cert_prefix ~ 'peer.csr' }}"
+  environment:
+    SAN: "IP:{{ etcd_ip }},DNS:{{ etcd_hostname }}"
+  when: etcd_server_certs_missing | bool
+  delegate_to: "{{ etcd_ca_host }}"
+
+# Certificates must be signed serially in order to avoid competing
+# for the serial file.
+- name: Sign and create the peer crt
+  delegated_serial_command:
+    command: >
+      openssl ca -name {{ etcd_ca_name }} -config {{ etcd_openssl_conf }}
+      -out {{ etcd_cert_prefix }}peer.crt
+      -in {{ etcd_cert_prefix }}peer.csr
+      -extensions {{ etcd_ca_exts_peer }} -batch
+    chdir: "{{ etcd_generated_certs_dir }}/{{ etcd_cert_subdir }}"
+    creates: "{{ etcd_generated_certs_dir ~ '/' ~  etcd_cert_subdir ~ '/'
+                 ~ etcd_cert_prefix ~ 'peer.crt' }}"
+  environment:
+    SAN: "IP:{{ etcd_ip }}"
+  when: etcd_server_certs_missing | bool
+  delegate_to: "{{ etcd_ca_host }}"
+
+- file:
+    src: "{{ etcd_ca_cert }}"
+    dest: "{{ etcd_generated_certs_dir}}/{{ etcd_cert_subdir }}/{{ etcd_cert_prefix }}ca.crt"
+    state: hard
+  when: etcd_server_certs_missing | bool
+  delegate_to: "{{ etcd_ca_host }}"
+
+- name: Create local temp directory for syncing certs
+  local_action: command mktemp -d /tmp/etcd_certificates-XXXXXXX
+  become: no
+  register: g_etcd_server_mktemp
+  changed_when: False
+  when: etcd_server_certs_missing | bool
+
+- name: Create a tarball of the etcd certs
+  command: >
+    tar -czvf {{ etcd_generated_certs_dir }}/{{ etcd_cert_subdir }}.tgz
+      -C {{ etcd_generated_certs_dir }}/{{ etcd_cert_subdir }} .
+  args:
+    creates: "{{ etcd_generated_certs_dir }}/{{ etcd_cert_subdir }}.tgz"
+    # Disables the following warning:
+    # Consider using unarchive module rather than running tar
+    warn: no
+  when: etcd_server_certs_missing | bool
+  delegate_to: "{{ etcd_ca_host }}"
+
+- name: Retrieve etcd cert tarball
+  fetch:
+    src: "{{ etcd_generated_certs_dir }}/{{ etcd_cert_subdir }}.tgz"
+    dest: "{{ g_etcd_server_mktemp.stdout }}/"
+    flat: yes
+    fail_on_missing: yes
+    validate_checksum: yes
+  when: etcd_server_certs_missing | bool
+  delegate_to: "{{ etcd_ca_host }}"
+
+- name: Ensure certificate directory exists
+  file:
+    path: "{{ item }}"
+    state: directory
+  with_items:
+  - "{{ etcd_cert_config_dir }}"
+  - "{{ etcd_system_container_cert_config_dir }}"
+  when: etcd_server_certs_missing | bool
+
+- name: Unarchive cert tarball
+  unarchive:
+    src: "{{ g_etcd_server_mktemp.stdout }}/{{ etcd_cert_subdir }}.tgz"
+    dest: "{{ etcd_cert_config_dir }}"
+  when: etcd_server_certs_missing | bool
+
+- name: Create a tarball of the etcd ca certs
+  command: >
+    tar -czvf {{ etcd_generated_certs_dir }}/{{ etcd_ca_name }}.tgz
+      -C {{ etcd_ca_dir }} .
+  args:
+    creates: "{{ etcd_generated_certs_dir }}/{{ etcd_ca_name }}.tgz"
+    warn: no
+  when: etcd_server_certs_missing | bool
+  delegate_to: "{{ etcd_ca_host }}"
+
+- name: Retrieve etcd ca cert tarball
+  fetch:
+    src: "{{ etcd_generated_certs_dir }}/{{ etcd_ca_name }}.tgz"
+    dest: "{{ g_etcd_server_mktemp.stdout }}/"
+    flat: yes
+    fail_on_missing: yes
+    validate_checksum: yes
+  when: etcd_server_certs_missing | bool
+  delegate_to: "{{ etcd_ca_host }}"
+
+- name: Ensure ca directory exists
+  file:
+    path: "{{ item }}"
+    state: directory
+  with_items:
+  - "{{ etcd_ca_dir }}"
+  - "{{ etcd_system_container_cert_config_dir }}/ca"
+  when: etcd_server_certs_missing | bool
+
+- name: Unarchive cert tarball for the system container
+  unarchive:
+    src: "{{ g_etcd_server_mktemp.stdout }}/{{ etcd_cert_subdir }}.tgz"
+    dest: "{{ etcd_system_container_cert_config_dir }}"
+  when:
+  - etcd_server_certs_missing | bool
+  - r_etcd_common_etcd_runtime == 'runc'
+
+- name: Unarchive etcd ca cert tarballs for the system container
+  unarchive:
+    src: "{{ g_etcd_server_mktemp.stdout }}/{{ etcd_ca_name }}.tgz"
+    dest: "{{ etcd_system_container_cert_config_dir }}/ca"
+  when:
+  - etcd_server_certs_missing | bool
+  - r_etcd_common_etcd_runtime == 'runc'
+
+- name: Delete temporary directory
+  local_action: file path="{{ g_etcd_server_mktemp.stdout }}" state=absent
+  become: no
+  changed_when: False
+  when: etcd_server_certs_missing | bool
+
+- name: Validate permissions on certificate files
+  file:
+    path: "{{ item }}"
+    mode: 0600
+    owner: "{{ 'etcd' if not etcd_is_containerized | bool else omit }}"
+    group: "{{ 'etcd' if not etcd_is_containerized | bool else omit }}"
+  when: etcd_url_scheme == 'https'
+  with_items:
+  - "{{ etcd_ca_file }}"
+  - "{{ etcd_cert_file }}"
+  - "{{ etcd_key_file }}"
+
+- name: Validate permissions on peer certificate files
+  file:
+    path: "{{ item }}"
+    mode: 0600
+    owner: "{{ 'etcd' if not etcd_is_containerized | bool else omit }}"
+    group: "{{ 'etcd' if not etcd_is_containerized | bool else omit }}"
+  when: etcd_peer_url_scheme == 'https'
+  with_items:
+  - "{{ etcd_peer_ca_file }}"
+  - "{{ etcd_peer_cert_file }}"
+  - "{{ etcd_peer_key_file }}"
+
+- name: Validate permissions on the config dir
+  file:
+    path: "{{ etcd_conf_dir }}"
+    state: directory
+    owner: "{{ 'etcd' if not etcd_is_containerized | bool else omit }}"
+    group: "{{ 'etcd' if not etcd_is_containerized | bool else omit }}"
+    mode: 0700
diff --git a/roles/etcd/templates/openssl_append.j2 b/roles/etcd/templates/openssl_append.j2
new file mode 100644
index 000000000..f28316fc2
--- /dev/null
+++ b/roles/etcd/templates/openssl_append.j2
@@ -0,0 +1,51 @@
+
+[ {{ etcd_req_ext }} ]
+basicConstraints = critical,CA:FALSE
+keyUsage         = digitalSignature,keyEncipherment
+subjectAltName   = ${ENV::SAN}
+
+[ {{ etcd_ca_name }} ]
+dir             = {{ etcd_ca_dir }}
+crl_dir         = {{ etcd_ca_crl_dir }}
+database        = {{ etcd_ca_db }}
+new_certs_dir   = {{ etcd_ca_new_certs_dir }}
+certificate     = {{ etcd_ca_cert }}
+serial          = {{ etcd_ca_serial }}
+private_key     = {{ etcd_ca_key }}
+crl_number      = {{ etcd_ca_crl_number }}
+x509_extensions = {{ etcd_ca_exts_client }}
+default_days    = {{ etcd_ca_default_days }}
+default_md      = sha256
+preserve        = no
+name_opt        = ca_default
+cert_opt        = ca_default
+policy          = policy_anything
+unique_subject  = no
+copy_extensions = copy
+
+[ {{ etcd_ca_exts_self }} ]
+authorityKeyIdentifier = keyid,issuer
+basicConstraints       = critical,CA:TRUE,pathlen:0
+keyUsage               = critical,digitalSignature,keyEncipherment,keyCertSign
+subjectKeyIdentifier   = hash
+
+[ {{ etcd_ca_exts_peer }} ]
+authorityKeyIdentifier = keyid,issuer:always
+basicConstraints       = critical,CA:FALSE
+extendedKeyUsage       = clientAuth,serverAuth
+keyUsage               = digitalSignature,keyEncipherment
+subjectKeyIdentifier   = hash
+
+[ {{ etcd_ca_exts_server }} ]
+authorityKeyIdentifier = keyid,issuer:always
+basicConstraints       = critical,CA:FALSE
+extendedKeyUsage       = serverAuth
+keyUsage               = digitalSignature,keyEncipherment
+subjectKeyIdentifier   = hash
+
+[ {{ etcd_ca_exts_client }} ]
+authorityKeyIdentifier = keyid,issuer:always
+basicConstraints       = critical,CA:FALSE
+extendedKeyUsage       = clientAuth
+keyUsage               = digitalSignature,keyEncipherment
+subjectKeyIdentifier   = hash