From 2eed57822c02576f4fd1107e19ee941ddf3ff6f7 Mon Sep 17 00:00:00 2001
From: Kazuhiro MUSASHI <simoom634@yahoo.co.jp>
Date: Sat, 1 May 2021 18:13:25 +0900
Subject: [PATCH] Deploy `consul-template`.

---
 cookbooks/consul-template/attributes.rb       | 13 +++++++
 cookbooks/consul-template/default.rb          |  7 ++++
 .../files/etc/default/consul-template         |  1 +
 .../etc/rsyslog.d/30-consul-template.conf     |  7 ++++
 .../systemd/system/consul-template.service    | 13 +++++++
 cookbooks/consul-template/install.rb          | 34 ++++++++++++++++
 cookbooks/consul-template/setup.rb            | 39 +++++++++++++++++++
 7 files changed, 114 insertions(+)
 create mode 100644 cookbooks/consul-template/attributes.rb
 create mode 100644 cookbooks/consul-template/default.rb
 create mode 100644 cookbooks/consul-template/files/etc/default/consul-template
 create mode 100644 cookbooks/consul-template/files/etc/rsyslog.d/30-consul-template.conf
 create mode 100644 cookbooks/consul-template/files/etc/systemd/system/consul-template.service
 create mode 100644 cookbooks/consul-template/install.rb
 create mode 100644 cookbooks/consul-template/setup.rb

diff --git a/cookbooks/consul-template/attributes.rb b/cookbooks/consul-template/attributes.rb
new file mode 100644
index 0000000..cb6f58c
--- /dev/null
+++ b/cookbooks/consul-template/attributes.rb
@@ -0,0 +1,13 @@
+# -------------------------------------------
+# Specifying the default settings:
+# -------------------------------------------
+node.reverse_merge!({
+  'consulTemplate' => {
+    'baseUrl' => 'https://releases.hashicorp.com/consul-template/',
+    'version' => '0.25.2',
+    'zipPrefix' => 'consul-template_',
+    'zipPostfix' => '_linux_amd64.zip',
+    'storage' => '/opt/consul-template/consul-template',
+    'location' => '/usr/local/bin/consul-template'
+  },
+})
diff --git a/cookbooks/consul-template/default.rb b/cookbooks/consul-template/default.rb
new file mode 100644
index 0000000..f0eb864
--- /dev/null
+++ b/cookbooks/consul-template/default.rb
@@ -0,0 +1,7 @@
+# Loading the attributes:
+include_recipe './attributes.rb'
+
+# Install loki here:
+include_recipe './install.rb'
+include_recipe './setup.rb'
+
diff --git a/cookbooks/consul-template/files/etc/default/consul-template b/cookbooks/consul-template/files/etc/default/consul-template
new file mode 100644
index 0000000..769569a
--- /dev/null
+++ b/cookbooks/consul-template/files/etc/default/consul-template
@@ -0,0 +1 @@
+OPTIONS="-syslog -syslog-name=consul-template"
diff --git a/cookbooks/consul-template/files/etc/rsyslog.d/30-consul-template.conf b/cookbooks/consul-template/files/etc/rsyslog.d/30-consul-template.conf
new file mode 100644
index 0000000..1a4c6cc
--- /dev/null
+++ b/cookbooks/consul-template/files/etc/rsyslog.d/30-consul-template.conf
@@ -0,0 +1,7 @@
+# Log kernel generated promtail log messages to file
+:syslogtag,contains,"consul-template" /var/log/consul-template.log
+
+# Uncomment the following to stop logging anything that matches the last rule.
+# Doing this will stop logging kernel generated UFW log messages to the file
+# normally containing kern.* messages (eg, /var/log/kern.log)
+& stop
diff --git a/cookbooks/consul-template/files/etc/systemd/system/consul-template.service b/cookbooks/consul-template/files/etc/systemd/system/consul-template.service
new file mode 100644
index 0000000..1acdc36
--- /dev/null
+++ b/cookbooks/consul-template/files/etc/systemd/system/consul-template.service
@@ -0,0 +1,13 @@
+[Unit]
+Description=consul-template
+Requires=network-online.target
+After=network-online.target consul.service
+
+[Service]
+EnvironmentFile=-/etc/default/consul-template
+Restart=on-failure
+ExecStart=/usr/local/bin/consul-template $OPTIONS -config=/etc/consul-template.d/conf/
+KillSignal=SIGINT
+
+[Install]
+WantedBy=multi-user.target
diff --git a/cookbooks/consul-template/install.rb b/cookbooks/consul-template/install.rb
new file mode 100644
index 0000000..7c0b01a
--- /dev/null
+++ b/cookbooks/consul-template/install.rb
@@ -0,0 +1,34 @@
+consulTemplate_zip = "#{node['consulTemplate']['zipPrefix']}#{node['consulTemplate']['version']}#{node['consulTemplate']['zipPostfix']}"
+consulTemplate_url = "#{node['consulTemplate']['baseUrl']}#{node['consulTemplate']['version']}/#{consulTemplate_zip}"
+
+# バージョン確認して、アップデート必要かどうか確認
+result = run_command('which consul-template', error: false)
+if result.exit_status != 0
+
+  # Download:
+  TMP = "/tmp/#{consulTemplate_zip}"
+
+  execute "wget #{consulTemplate_url} -O #{TMP}"
+
+  directory '/opt/consul-template' do
+    owner 'root'
+    group 'root'
+    mode  '0755'
+  end
+
+  execute "unzip #{TMP} -d /opt/consul-template/" do
+    not_if 'test -e /opt/consul-template/consul-template'
+  end
+
+  # Change Owner and Permissions:
+  file "#{node['consulTemplate']['storage']}" do
+    owner 'root'
+    group 'root'
+    mode  '755'
+  end
+
+  # Create Link
+  link "#{node['consulTemplate']['location']}" do
+    to "#{node['consulTemplate']['storage']}"
+  end
+end
diff --git a/cookbooks/consul-template/setup.rb b/cookbooks/consul-template/setup.rb
new file mode 100644
index 0000000..25d3460
--- /dev/null
+++ b/cookbooks/consul-template/setup.rb
@@ -0,0 +1,39 @@
+# Create `/var/log/vector`:
+%w( /etc/consul-template.d/conf /etc/consul-template.d/templates ).each do |d|
+  directory d do
+    owner  'root'
+    group  'root'
+    mode   '0755'
+  end
+end
+
+%w( /etc/systemd/system/consul-template.service /etc/default/consul-template).each do |conf|
+  remote_file conf do
+    owner 'root'
+    group 'root'
+    mode  '0644'
+
+    notifies :run, 'execute[systemctl daemon-reload]', :immediately
+  end
+end
+
+execute 'systemctl daemon-reload' do
+  action :nothing
+end
+
+service 'consul-template' do
+  action [:enable, :restart]
+end
+
+remote_file '/etc/rsyslog.d/30-consul-template.conf' do
+  owner 'root'
+  group 'root'
+  mode  '0644'
+
+  notifies :restart, 'service[rsyslog]', :immediately
+end
+
+service 'rsyslog' do
+  action [ :nothing ]
+end
+