diff --git a/.chglog/CHANGELOG.tpl.md b/.chglog/CHANGELOG.tpl.md
new file mode 100755
index 0000000..cc0367b
--- /dev/null
+++ b/.chglog/CHANGELOG.tpl.md
@@ -0,0 +1,23 @@
+# Changelog
+
+{{ range .Versions -}}
+## {{ if .Tag.Previous }}[{{ .Tag.Name }}]({{ $.Info.RepositoryURL }}/compare/{{ .Tag.Previous.Name }}...{{ .Tag.Name }}){{ else }}{{ .Tag.Name }}{{ end }} ({{ datetime "2006-01-02" .Tag.Date }})
+
+{{ range .CommitGroups -}}
+### {{ .Title }}
+
+{{ range .Commits -}}
+- {{ if .Scope }}**{{ .Scope }}:** {{ end }}{{ (regexReplaceAll "(.*)/issues/(.*)" (regexReplaceAll "(Co-\\w*-by.*)" .Subject "") "${1}/pulls/${2}") | trim }}
+{{ end }}
+{{- end -}}
+
+{{- if .NoteGroups -}}
+{{ range .NoteGroups -}}
+### {{ .Title }}
+
+{{ range .Notes }}
+{{ .Body }}
+{{ end }}
+{{ end -}}
+{{ end -}}
+{{ end -}}
diff --git a/.chglog/config.yml b/.chglog/config.yml
new file mode 100755
index 0000000..c7478ba
--- /dev/null
+++ b/.chglog/config.yml
@@ -0,0 +1,25 @@
+style: github
+template: CHANGELOG.tpl.md
+info:
+  title: CHANGELOG
+  repository_url: https://gitea.rknet.org/infra/hcloud-server-tf
+options:
+  commit_groups:
+    title_maps:
+      feat: Features
+      fix: Bug Fixes
+      perf: Performance Improvements
+      refactor: Code Refactoring
+      chore: Others
+      test: Testing
+      ci: CI Pipeline
+      docs: Documentation
+  header:
+    pattern: "^(\\w*)(?:\\(([\\w\\$\\.\\-\\*\\s]*)\\))?\\:\\s(.*)$"
+    pattern_maps:
+      - Type
+      - Scope
+      - Subject
+  notes:
+    keywords:
+      - BREAKING CHANGE
diff --git a/.drone.yml b/.drone.yml
index c9ba5c6..41785bb 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -1,6 +1,6 @@
 ---
 kind: pipeline
-name: check
+name: test
 
 platform:
   os: linux
@@ -13,13 +13,18 @@ steps:
     commands:
       - git diff-tree --check $(git hash-object -t tree /dev/null) HEAD
 
+  - name: tflint
+    image: ghcr.io/terraform-linters/tflint
+    commands:
+      - tflint --color
+
   - name: terraform
     pull: always
     image: jmccann/drone-terraform:8
     settings:
       actions:
         - validate
-      tf_version: 1.2.0
+      tf_version: 1.3.0
 
 node:
   zone: mgmt
@@ -30,8 +35,54 @@ trigger:
     - refs/tags/**
     - refs/pull/**
 
+---
+kind: pipeline
+name: release
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+  - name: changelog-generate
+    image: thegeeklab/git-chglog
+    commands:
+      - git fetch -tq
+      - git-chglog --no-color --no-emoji -o CHANGELOG.md ${DRONE_TAG:---next-tag unreleased unreleased}
+
+  - name: changelog-format
+    image: thegeeklab/alpine-tools
+    commands:
+      - prettier CHANGELOG.md
+      - prettier -w CHANGELOG.md
+
+  - name: publish-gitea
+    image: plugins/gitea-release
+    settings:
+      api_key:
+        from_secret: gitea_token
+      base_url: https://gitea.rknet.org
+      note: CHANGELOG.md
+      overwrite: true
+      title: ${DRONE_TAG}
+    when:
+      ref:
+        - refs/tags/**
+
+node:
+  zone: mgmt
+
+trigger:
+  ref:
+    - refs/heads/main
+    - refs/pull/**
+    - refs/tags/**
+
+depends_on:
+  - test
+
 ---
 kind: signature
-hmac: ec825d5879e3dc1d26bdc619143cf2ea41d5183c2d7b892498b21103379675c2
+hmac: 08a182381788120a9debba89ce838da455d72b0057be6bd1b84ae3437eb1106d
 
 ...
diff --git a/.tflint.hcl b/.tflint.hcl
new file mode 100644
index 0000000..299bcc6
--- /dev/null
+++ b/.tflint.hcl
@@ -0,0 +1,16 @@
+plugin "terraform" {
+  enabled = true
+  preset  = "recommended"
+}
+
+rule "terraform_required_version" {
+  enabled = false
+}
+
+rule "terraform_required_providers" {
+  enabled = false
+}
+
+rule "terraform_unused_declarations" {
+  enabled = false
+}
diff --git a/variables.tf b/variables.tf
index 2151588..104988a 100644
--- a/variables.tf
+++ b/variables.tf
@@ -39,6 +39,7 @@ variable "ucs_zones" {
 
 // Module
 variable "server" {
+  type    = list(any)
   default = []
 }