Add a Dockerfile for Heka

Partially implements: blueprint heka
Change-Id: Iafe0dba1333f1f84bc5956890c3b7a0c2a45cef3

docker/heka/Dockerfile.j2

@@ -0,0 +1,26 @@
+FROM {{ namespace }}/{{ image_prefix }}base:{{ tag }}
+MAINTAINER {{ maintainer }}
+
+{% if base_distro in ['centos', 'fedora', 'oraclelinux', 'rhel'] %}
+
+RUN yum -y install https://github.com/mozilla-services/heka/releases/download/v0.10.0/heka-0_10_0-linux-amd64.rpm \
+    && useradd heka
+
+{% elif base_distro in ['ubuntu'] %}
+
+RUN curl --location https://github.com/mozilla-services/heka/releases/download/v0.10.0/heka_0.10.0_amd64.deb -o heka_0.10.0_amd64.deb \
+    && dpkg -i heka_0.10.0_amd64.deb \
+    && rm -f heka_0.10.0_amd64.deb
+
+{% endif %}
+
+COPY heka_sudoers /etc/sudoers.d/heka_sudoers
+COPY extend_start.sh /usr/local/bin/kolla_extend_start
+
+RUN usermod -a -G kolla heka \
+    && chmod 755 /usr/local/bin/kolla_extend_start \
+    && chown -R heka: /usr/share/heka
+
+{{ include_footer }}
+
+USER heka

docker/heka/extend_start.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+
+# Give processes executed with the "kolla" group the permission to create files
+# and sub-directories in the /var/log/kolla directory.
+#
+# Also set the setgid permission on the /var/log/kolla directory so that new
+# files and sub-directories in that directory inherit its group id ("kolla").
+if [[ $(stat -c %U:%G /var/log/kolla) != "heka:kolla" ]]; then
+    sudo chown heka:kolla /var/log/kolla
+fi
+if [[ $(stat -c %a /var/log/kolla) != "2775" ]]; then
+    sudo chmod 2775 /var/log/kolla
+fi
+
+# Bootstrap and exit if KOLLA_BOOTSTRAP variable is set. This catches all cases
+# of the KOLLA_BOOTSTRAP variable being set, including empty.
+if [[ "${!KOLLA_BOOTSTRAP[@]}" ]]; then
+    exit 0
+fi
+
+# /var/cache/hekad is what the Heka daemon will use for persistent storage
+# through process restarts, so make "heka" the user of that directory.
+if [[ $(stat -c %U:%G /var/cache/hekad) != "heka:heka" ]]; then
+    sudo chown heka: /var/cache/hekad
+fi
+
+# Give hekad the permission to create the "log" Unix socket file in the
+# /var/lib/kolla/heka directory.
+if [[ $(stat -c %U:%G /var/lib/kolla/heka) != "heka:kolla" ]]; then
+    sudo chown heka:kolla /var/lib/kolla/heka
+fi
+
+# The Heka daemon will create the /var/lib/kolla/heka/log Unix socket file, so
+# make sure it's not present or the Heka daemon will fail when starting.
+if [[ -e "/var/lib/kolla/heka/log" ]]; then
+    rm -rf /var/lib/kolla/heka/log
+fi

docker/heka/heka_sudoers

@@ -0,0 +1,4 @@
+%kolla ALL=(root) NOPASSWD: /bin/chown heka\:kolla /var/log/kolla, /usr/bin/chown heka\:kolla /var/log/kolla
+%kolla ALL=(root) NOPASSWD: /bin/chmod 2775 /var/log/kolla, /usr/bin/chmod 2775 /var/log/kolla
+%kolla ALL=(root) NOPASSWD: /bin/chown heka\: /var/cache/hekad, /usr/bin/chown heka\: /var/cache/hekad
+%kolla ALL=(root) NOPASSWD: /bin/chown heka\:kolla /var/lib/kolla/heka, /usr/bin/chown heka\:kolla /var/lib/kolla/heka

kolla/common/config.py

@@ -27,7 +27,8 @@ _PROFILE_OPTS = [
     cfg.ListOpt('infra',
                 default=['ceph', 'mariadb', 'haproxy',
                          'keepalived', 'kolla-toolbox', 'memcached',
-                         'mongodb', 'openvswitch', 'rabbitmq', 'rsyslog'],
+                         'mongodb', 'openvswitch', 'rabbitmq', 'rsyslog',
+                         'heka'],
                 help='Infra images'),
     cfg.ListOpt('main',
                 default=['cinder', 'ceilometer', 'glance', 'heat',
@@ -42,12 +43,12 @@ _PROFILE_OPTS = [
                 default=['kolla-toolbox', 'glance', 'haproxy',
                          'heat', 'horizon', 'keepalived', 'keystone',
                          'memcached', 'mariadb', 'neutron', 'nova',
-                         'openvswitch', 'rabbitmq', 'rsyslog'],
+                         'openvswitch', 'rabbitmq', 'rsyslog', 'heka'],
                 help='Default images'),
     cfg.ListOpt('gate',
                 default=['glance', 'haproxy', 'keepalived', 'keystone',
                          'kolla-toolbox', 'mariadb', 'memcached', 'neutron',
-                         'nova', 'openvswitch', 'rabbitmq', 'rsyslog'],
+                         'nova', 'openvswitch', 'rabbitmq', 'rsyslog', 'heka'],
                 help='Gate images'),
     cfg.ListOpt('mesos',
                 default=['chronos', 'marathon', 'mesos-master', 'mesos-slave',