feat: add vmcluster module (#363)

- manage vmstorage package, service and environment file
- manage vmselect package, service and environment file
- manage vminsert package, service and environment file
- manage vmagent package, service and environment file
- manage options for vmstorage, vmselect, vminsert, vmagent role

Reviewed-on: #363

modules/vmcluster/templates/options.erb

@@ -0,0 +1,18 @@
+<%
+  opts = @options || {}
+  lines = []
+
+  opts.each do |key, val|
+    flag = "-#{key}"
+
+    if val.is_a?(Array)
+      val.each do |v|
+        lines << "#{flag}=#{v}"
+      end
+    else
+      lines << "#{flag}=#{val}"
+    end
+  end
+%>
+OPTIONS="<%= lines.map { |l| l.lstrip }.join(" \\\n  ") %>"
+

modules/vmcluster/templates/vmagent.scrape.yaml.erb

@@ -0,0 +1,37 @@
+global:
+  scrape_interval: 15s
+  scrape_timeout: 10s
+
+scrape_configs:
+  - job_name: 'consul'
+    consul_sd_configs:
+      - server: 'consul.service.consul:8500'
+        token: <%= @consul_node_token %>
+        scheme: http
+
+    relabel_configs:
+      # Only keep services with the `metrics` tag
+      - source_labels: [__meta_consul_tagpresent_metrics]
+        regex: true
+        action: keep
+
+      # Use the service address and port
+      - source_labels: [__meta_consul_node, __meta_consul_service_port]
+        separator: ':'
+        target_label: __address__
+        replacement: '${1}:${2}'
+        action: replace
+
+      # Set scheme to metrics_scheme
+      - source_labels: [__meta_consul_tag_metrics_scheme]
+        target_label: __scheme__
+        action: replace
+
+      # Set path to /metrics
+      - target_label: __metrics_path__
+        replacement: /metrics
+
+      # Use metrics_job=<job> as job label
+      - source_labels: [__meta_consul_tag_metrics_job]
+        target_label: job
+        action: replace

modules/vmcluster/templates/vmagent.service.erb

@@ -0,0 +1,18 @@
+[Unit]
+Description=VictoriaMetrics vmagent service
+After=network.target
+
+[Service]
+Type=simple
+User=<%= @user %>
+Group=<%= @group %>
+Restart=always
+EnvironmentFile=<%= @vars_file %>
+ExecStart=<%= @exec_path %> -remoteWrite.tmpDataPath=<%= @data_path %> $OPTIONS
+
+PrivateTmp=yes
+NoNewPrivileges=yes
+ProtectSystem=full
+
+[Install]
+WantedBy=multi-user.target

modules/vmcluster/templates/vminsert.service.erb

@@ -0,0 +1,18 @@
+[Unit]
+Description=VictoriaMetrics vminsert service
+After=network.target
+
+[Service]
+Type=simple
+User=<%= @user %>
+Group=<%= @group %>
+Restart=always
+EnvironmentFile=<%= @vars_file %>
+ExecStart=<%= @exec_path %> $OPTIONS
+
+PrivateTmp=yes
+NoNewPrivileges=yes
+ProtectSystem=full
+
+[Install]
+WantedBy=multi-user.target

modules/vmcluster/templates/vmselect.service.erb

@@ -0,0 +1,18 @@
+[Unit]
+Description=VictoriaMetrics vmselect service
+After=network.target
+
+[Service]
+Type=simple
+User=<%= @user %>
+Group=<%= @group %>
+Restart=always
+EnvironmentFile=<%= @vars_file %>
+ExecStart=<%= @exec_path %> -cacheDataPath=<%= @data_path %> $OPTIONS
+
+PrivateTmp=yes
+NoNewPrivileges=yes
+ProtectSystem=full
+
+[Install]
+WantedBy=multi-user.target

modules/vmcluster/templates/vmstorage.service.erb

@@ -0,0 +1,18 @@
+[Unit]
+Description=VictoriaMetrics vmstorage service
+After=network.target
+
+[Service]
+Type=simple
+User=<%= @user %>
+Group=<%= @group %>
+Restart=always
+EnvironmentFile=<%= @vars_file %>
+ExecStart=<%= @exec_path %> -storageDataPath=<%= @data_path %> $OPTIONS
+
+PrivateTmp=yes
+NoNewPrivileges=yes
+ProtectSystem=full
+
+[Install]
+WantedBy=multi-user.target