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tanjitanji
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refactor(galeracheck): add build system
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‎.github/workflows/build-galeracheck-deb.yml‎

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name: Build and Release galeracheck Debian Package
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on:
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push:
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tags:
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- '*-galeracheck'
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permissions:
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contents: write
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jobs:
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build-and-release:
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name: Build Debian Package
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runs-on: ubuntu-latest
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steps:
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- name: Checkout code
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uses: actions/checkout@v4
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with:
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fetch-depth: 0
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- name: Set up Go
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uses: actions/setup-go@v5
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with:
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go-version: '1.21'
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cache: true
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- name: Extract version from tag
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id: version
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run: |
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TAG_NAME=${GITHUB_REF#refs/tags/}
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VERSION=${TAG_NAME%-galeracheck}
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echo "version=$VERSION" >> $GITHUB_OUTPUT
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echo "tag=$TAG_NAME" >> $GITHUB_OUTPUT
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echo "Building version: $VERSION"
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- name: Build galeracheck binary
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working-directory: ./galeracheck
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run: |
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CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
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-ldflags="-w -s -X main.version=${{ steps.version.outputs.version }}" \
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-o galeracheck \
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.
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file galeracheck
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./galeracheck -h || true
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- name: Install nfpm
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run: |
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echo "deb [trusted=yes] https://repo.goreleaser.com/apt/ /" | sudo tee /etc/apt/sources.list.d/goreleaser.list
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sudo apt-get update
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sudo apt-get install -y nfpm
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- name: Build Debian package
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working-directory: ./galeracheck
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env:
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VERSION: ${{ steps.version.outputs.version }}
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run: |
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nfpm package --packager deb --target .
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dpkg-deb --contents galeracheck_${VERSION}_amd64.deb
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dpkg-deb --info galeracheck_${VERSION}_amd64.deb
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- name: Create GitHub Release
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uses: softprops/action-gh-release@v1
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with:
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tag_name: ${{ steps.version.outputs.tag }}
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name: galeracheck ${{ steps.version.outputs.version }}
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body: |
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# galeracheck ${{ steps.version.outputs.version }}
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HTTP health check service for Galera Cluster nodes.
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## Installation
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### Debian/Ubuntu
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```bash
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wget https://github.com/tanji/mariadb-tools/releases/download/${{ steps.version.outputs.tag }}/galeracheck_${{ steps.version.outputs.version }}_amd64.deb
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sudo dpkg -i galeracheck_${{ steps.version.outputs.version }}_amd64.deb
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```
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### Configure and Start
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```bash
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# Create MySQL config file
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sudo tee /etc/galeracheck/my.cnf > /dev/null << 'CONFIG'
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[mysql]
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user=monitor
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password=yourpassword
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socket=/run/mysqld/mysqld.sock
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CONFIG
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# Enable and start service
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sudo systemctl enable galeracheck
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sudo systemctl start galeracheck
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# Check status
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sudo systemctl status galeracheck
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curl http://localhost:8000/
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```
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## Changes
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See commit history for details.
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draft: false
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prerelease: false
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files: |
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galeracheck/galeracheck_${{ steps.version.outputs.version }}_amd64.deb
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- name: Upload package artifact
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uses: actions/upload-artifact@v4
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with:
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name: galeracheck-deb-${{ steps.version.outputs.version }}
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path: galeracheck/galeracheck_${{ steps.version.outputs.version }}_amd64.deb
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retention-days: 90

‎galeracheck/galeracheck‎

8.92 MB
Binary file not shown.

‎galeracheck/main.go‎

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"fmt"
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"log"
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"net/http"
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"os"
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osuser "os/user"
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"strings"
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)
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var (
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version = "dev"
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cnffile string
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port int
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sockopt string
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)
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func init() {
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var versionFlag bool
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flag.StringVar(&cnffile, "config", "~/.my.cnf", "MySQL Config file to use")
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flag.IntVar(&port, "port", 8000, "TCP port to listen on")
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flag.StringVar(&sockopt, "mysql-socket", "/run/mysqld/mysqld.sock", "Path to unix socket of monitored MySQL instance")
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flag.StringVar(&hostopt, "mysql-host", "", "Hostname or IP address of monitored MySQL instance")
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flag.StringVar(&portopt, "mysql-port", "3306", "Port of monitored MySQL instance")
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flag.BoolVar(&awd, "available-when-donor", false, "Available when donor")
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flag.BoolVar(&dwr, "disable-when-readonly", false, "Disable when read_only flag is set (desirable when wanting to take a node out of the cluster without desync)")
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flag.BoolVar(&versionFlag, "version", false, "Print version and exit")
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flag.Parse()
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if versionFlag {
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fmt.Printf("galeracheck version %s\n", version)
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os.Exit(0)
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}
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}
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func main() {
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flag.Parse()
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usr, _ := osuser.Current()
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if strings.Contains(cnffile, "~/") {

‎galeracheck/my.cnf.example‎

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# Example galeracheck configuration
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# Copy to ~/.my.cnf or /etc/galeracheck/my.cnf and customize
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[mysql]
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user=monitor
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password=changeme
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socket=/run/mysqld/mysqld.sock
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# For TCP connections, use host and port instead of socket:
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# host=localhost
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# port=3306

‎galeracheck/nfpm.yaml‎

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name: "galeracheck"
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arch: "amd64"
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platform: "linux"
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version: "${VERSION}"
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section: "database"
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priority: "optional"
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maintainer: "tanji <tanji@mariadb.com>"
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description: |
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HTTP health check service for Galera Cluster nodes
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galeracheck is a lightweight HTTP service that monitors the health of a Galera
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Cluster node and reports its availability status. Load balancers can poll this
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endpoint to determine whether to route traffic to the node.
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vendor: "tanji"
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homepage: "https://github.com/tanji/mariadb-tools"
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license: "Apache-2.0"
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depends:
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- systemd
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contents:
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- src: ./galeracheck
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dst: /usr/local/bin/galeracheck
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file_info:
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mode: 0755
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- src: ./galeracheck.service
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dst: /lib/systemd/system/galeracheck.service
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file_info:
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mode: 0644
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- src: ./README.md
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dst: /usr/share/doc/galeracheck/README.md
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file_info:
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mode: 0644
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- src: ./my.cnf.example
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dst: /usr/share/doc/galeracheck/my.cnf.example
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file_info:
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mode: 0644
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- dst: /etc/galeracheck
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type: dir
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file_info:
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mode: 0755
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scripts:
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postinstall: ./scripts/postinstall.sh
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preremove: ./scripts/preremove.sh
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overrides:
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deb:
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fields:
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Recommends: "mariadb-server | mysql-server"

‎galeracheck/scripts/postinstall.sh‎

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#!/bin/bash
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# Post-installation script for galeracheck
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if command -v systemctl &> /dev/null; then
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systemctl daemon-reload
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echo "Systemd daemon reloaded. To enable and start galeracheck:"
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echo " systemctl enable galeracheck"
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echo " systemctl start galeracheck"
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fi
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exit 0

‎galeracheck/scripts/preremove.sh‎

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#!/bin/bash
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# Pre-removal script for galeracheck
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if command -v systemctl &> /dev/null; then
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if systemctl is-active --quiet galeracheck; then
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systemctl stop galeracheck
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fi
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if systemctl is-enabled --quiet galeracheck; then
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systemctl disable galeracheck
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fi
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fi
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exit 0

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