fix: rework to implement environment variables handling

Developed environ.sh.jinja and added test pillar data to default
Corrected prometheus.config.environ ref #59
Switched default test pillar to use none archive - due to deployment of custom service
Disabled a number of exporters following switch from archive due to failing - to be reviewed
Corrected prometheus environ_file location

Resolves: #59

.yamllint

@@ -12,6 +12,7 @@ extends: 'default'
 # 5. Any YAML files under directory `.kitchen/`, introduced during local testing
 # 6. `kitchen.vagrant.yml`, which contains Embedded Ruby (ERB) template syntax
 ignore: |
+  .bundle/
   .cache/
   .git/
   node_modules/

kitchen.yml

@@ -7,6 +7,8 @@ driver:
   use_sudo: false
   privileged: true
   run_command: /lib/systemd/systemd
+  forward:
+    - 9090:9090
 
 platforms:
   ## SALT `tiamat`
@@ -350,7 +352,7 @@ suites:
       state_top:
         base:
           '*':
-            - prometheus._mapdata
+            # - prometheus._mapdata
             - prometheus
       pillars:
         top.sls:

prometheus/config/environ.sls

@@ -4,7 +4,7 @@
 {%- set tplroot = tpldir.split('/')[0] %}
 {%- from tplroot ~ "/map.jinja" import prometheus as p with context %}
 {%- from tplroot ~ "/libtofs.jinja" import files_switch with context %}
-{%- from tplroot ~ "/files/macros.jinja" import concat_environ %}
+{%- from tplroot ~ "/files/macros.jinja" import concat_args %}
 {%- set sls_archive_install = tplroot ~ '.archive.install' %}
 {%- set sls_package_install = tplroot ~ '.package.install' %}
 
@@ -12,7 +12,8 @@ include:
   - {{ sls_archive_install if p.pkg.use_upstream_archive else sls_package_install }}
 
     {%- for name in p.wanted.component %}
-        {%- if 'environ' in p.pkg.component[name] and p.pkg.component[name]['environ'] %}
+        {%- if 'environ' in p.pkg.component[name] and 'args' in p.pkg.component[name]['environ'] %}
+            {%- set args = p.pkg.component[name]['environ']['args'] %}
             {%- if 'environ_file' in p.pkg.component[name] and p.pkg.component[name]['environ_file'] %}
 
 prometheus-config-install-{{ name }}-environ_file:
@@ -29,8 +30,10 @@ prometheus-config-install-{{ name }}-environ_file:
     - user: {{ p.identity.rootuser }}
     - group: {{ p.identity.rootgroup }}
                 {%- endif %}
-    - contents: |
-       command_args="{{ concat_environ(environ) }}"
+    #- contents: |
+    #   command_args="{{ concat_args(args) }}"
+    - context:
+        args: {{ args }}
     - watch_in:
       - service: prometheus-service-running-{{ name }}
     - require:
@@ -43,7 +46,7 @@ prometheus-config-environ-{{ name }}-all:
     - name: {{ name }}_environ
     # service prometheus restart tends to hang on FreeBSD
     # https://github.com/saltstack/salt/issues/44848#issuecomment-487016414
-    - value: "{{ concat_environ(p.pkg.component[name]['environ']) }} >/dev/null 2>&1"
+    - value: "{{ concat_args(p.pkg.component[name]['environ']) }} >/dev/null 2>&1"
     - watch_in:
       - service: prometheus-service-running-{{ name }}
 

prometheus/defaults.yaml

@@ -152,7 +152,7 @@ prometheus:
         version: v2.22.1
         config_file: /etc/prometheus/prometheus.yml
         config: {}
-        environ_file: /etc/default/prometheus.sh
+        environ_file: /etc/default/prometheus
         environ: {}
         service:
           args:

prometheus/files/default/environ.sh.jinja

@@ -2,5 +2,8 @@
 # File managed by Salt at <{{ source }}>.
 # Your changes may be overwritten.
 ########################################################################
+# Set the command-line arguments to pass to the server.
+ARGS="{%- for arg, value in args.items() %}--{{ arg }}={{ value }}{{ " " if not loop.last else "" }}{% endfor %}"
+
+
 
-{{ config|yaml(False) }}

test/salt/pillar/default.sls

@@ -14,10 +14,10 @@ prometheus:
       - alertmanager
       - node_exporter
       - blackbox_exporter
-      - consul_exporter
-      - php-fpm_exporter
+      # - consul_exporter
+      # - php-fpm_exporter
       - postgres_exporter
-      - mysqld_exporter
+      # - mysqld_exporter
       # - memcached_exporter  # not in upstream repo, only archive
 
   exporters:
@@ -36,7 +36,9 @@ prometheus:
           smartctl: /usr/sbin/smartctl
   pkg:
     use_upstream_repo: false
-    use_upstream_archive: true
+    # Changed to use non archive install as default (the archive includes a bespoke
+    # implementation of service thats needs updating)
+    use_upstream_archive: false
 
     clientlibs:
       # https://prometheus.io/docs/instrumenting/clientlibs
@@ -102,17 +104,21 @@ prometheus:
           # This is to test that any fancy name we use, will work in archive mode
           name: my-fancy-consul-exporter-service
 
-      mysqld_exporter:
-        service:
-          args:
-            web.listen-address: 0.0.0.0:9192
-          env:
-            - 'DATA_SOURCE_NAME=foo:bar@/'
+      # mysqld_exporter:
+      #   service:
+      #     args:
+      #       web.listen-address: 0.0.0.0:9192
+      #     env:
+      #       - 'DATA_SOURCE_NAME=foo:bar@/'
 
       prometheus:
         service:
           args:
             web.listen-address: 0.0.0.0:9090
+        environ:
+          args:
+            web.listen-address: 0.0.0.0:9090
+            log.level: debug
         config:
           # yamllint disable-line rule:line-length
           # ref https://raw.githubusercontent.com/prometheus/prometheus/release-2.10/config/testdata/conf.good.yml