#!/bin/bash
# SpringBoot應(yīng)用啟動腳本
APP_NAME="demo-app"
JAR_FILE="/opt/apps/demo-app.jar"
LOG_FILE="/var/log/${APP_NAME}.log"
JVM_OPTS="-Xms512m -Xmx512m -XX:+UseG1GC -XX:MaxGCPauseMillis=200"
SERVER_PORT=8080

# 檢查JAR文件是否存在
if [ ! -f "$JAR_FILE" ]; then
    echo "錯誤：JAR文件 $JAR_FILE 不存在！"
    exit 1
fi

# 檢查端口是否被占用
check_port() {
    netstat -tlnp | grep ":$SERVER_PORT " > /dev/null
    return $?
}

if check_port; then
    echo "錯誤：端口 $SERVER_PORT 已被占用！"
    netstat -tlnp | grep ":$SERVER_PORT "
    exit 1
fi

# 啟動應(yīng)用
echo "開始啟動 $APP_NAME ..."
nohup java $JVM_OPTS -jar $JAR_FILE --server.port=$SERVER_PORT > $LOG_FILE 2>&1 &

# 等待應(yīng)用啟動
echo "等待應(yīng)用啟動，端口：$SERVER_PORT ..."
for i in {1..30}; do
    if check_port; then
        echo "$APP_NAME 啟動成功！"
        echo "日志文件：$LOG_FILE"
        exit 0
    fi
    sleep 1
done

# 啟動超時處理
echo "錯誤：$APP_NAME 啟動超時！"
echo "查看日志獲取詳細信息：tail -f $LOG_FILE"
exit 1

chmod +x /opt/apps/start.sh

[Unit]
Description=Demo SpringBoot Application
Documentation=https://example.com/docs
After=network.target mysql.service  # 依賴網(wǎng)絡(luò)和MySQL服務(wù)啟動后再啟動
Wants=mysql.service  # MySQL啟動失敗不影響本服務(wù)啟動

[Service]
User=appuser
Group=appuser
WorkingDirectory=/opt/apps
ExecStart=/opt/apps/start.sh
# 自定義停止命令（優(yōu)雅關(guān)閉）
ExecStop=/bin/bash -c "PID=$(pgrep -f 'demo-app.jar'); if [ -n "$PID" ]; then kill -15 $PID; sleep 10; if ps -p $PID > /dev/null; then kill -9 $PID; fi; fi"
# 啟動前備份日志
ExecStartPre=/bin/bash -c "if [ -f /var/log/demo-app.log ]; then mv /var/log/demo-app.log /var/log/demo-app.log.$(date +%%Y%%m%%d%%H%%M%%S); fi"
SuccessExitStatus=143  # 識別SpringBoot優(yōu)雅關(guān)閉狀態(tài)碼
Restart=always  # 總是重啟（異常退出時）
RestartSec=5  # 重啟間隔5秒
TimeoutStartSec=300  # 啟動超時時間（5分鐘）
TimeoutStopSec=60  # 停止超時時間
Environment="SPRING_PROFILES_ACTIVE=prod"  # 環(huán)境變量
Environment="JAVA_HOME=/usr/lib/jvm/java-11-openjdk"

[Install]
WantedBy=multi-user.target  # 多用戶模式下啟動

# 重載systemd配置（修改服務(wù)文件后必須執(zhí)行）
sudo systemctl daemon-reload

# 啟動服務(wù)
sudo systemctl start demo-app

# 停止服務(wù)
sudo systemctl stop demo-app

# 重啟服務(wù)
sudo systemctl restart demo-app

# 設(shè)置開機自啟
sudo systemctl enable demo-app

# 取消開機自啟
sudo systemctl disable demo-app

# 查看服務(wù)狀態(tài)
sudo systemctl status demo-app

# 查看服務(wù)日志
sudo journalctl -u demo-app -f  # -f表示實時跟蹤

 demo-app.service - Demo SpringBoot Application
   Loaded: loaded (/etc/systemd/system/demo-app.service; enabled; vendor preset: disabled)
   Active: active (running) since Wed 2023-11-15 10:30:00 CST; 5min ago
     Docs: https://example.com/docs
  Process: 1234 ExecStartPre=/bin/bash -c if [ -f /var/log/demo-app.log ]; then mv /var/log/demo-app.log /var/log/demo-app.log.20231115102959; fi (code=exited, status=0/SUCCESS)
 Main PID: 1245 (start.sh)
    Tasks: 30 (limit: 4915)
   Memory: 256.0M
   CGroup: /system.slice/demo-app.service
           ├─1245 /bin/bash /opt/apps/start.sh
           └─1250 java -Xms512m -Xmx512m -XX:+UseG1GC -XX:MaxGCPauseMillis=200 -jar /opt/apps/demo-app.jar --server.port=8080

sudo chown -R appuser:appuser /opt/apps /var/log/demo-app.log

[Service]
TimeoutStartSec=300  # 5分鐘

[Service]
KillSignal=SIGTERM
TimeoutStopSec=60

server:
  shutdown: graceful
spring:
  lifecycle:
    timeout-per-shutdown-phase: 30s

# 安裝EPEL源
sudo yum install -y epel-release
# 安裝Supervisor
sudo yum install -y supervisor
# 啟動并設(shè)置開機自啟
sudo systemctl start supervisord
sudo systemctl enable supervisord

sudo apt-get update
sudo apt-get install -y supervisor

[program:demo-app]
command=/usr/bin/java -Xms512m -Xmx512m -XX:+UseG1GC -jar /opt/apps/demo-app.jar --server.port=8080
directory=/opt/apps
user=appuser
autostart=true  # 隨Supervisor啟動而啟動
autorestart=true  # 進程退出時自動重啟
startretries=3  # 啟動失敗重試次數(shù)
startsecs=10  # 啟動后穩(wěn)定運行10秒才算成功
redirect_stderr=true  # 錯誤日志重定向到標準輸出
stdout_logfile=/var/log/demo-app.log
stdout_logfile_maxbytes=10MB  # 日志文件大小限制
stdout_logfile_backups=10  # 日志備份數(shù)量
environment=
    SPRING_PROFILES_ACTIVE="prod",
    JAVA_HOME="/usr/lib/jvm/java-11-openjdk"

# 重載配置（修改配置后執(zhí)行）
sudo supervisorctl update

# 查看所有進程狀態(tài)
sudo supervisorctl status

# 啟動應(yīng)用
sudo supervisorctl start demo-app

# 停止應(yīng)用
sudo supervisorctl stop demo-app

# 重啟應(yīng)用
sudo supervisorctl restart demo-app

# 查看應(yīng)用日志
sudo supervisorctl tail -f demo-app

#!/bin/bash
PORT=8080
TIMEOUT=5

# 檢查健康端點
result=$(curl -s -w "%{http_code}" -o /dev/null --connect-timeout $TIMEOUT http://localhost:$PORT/actuator/health)

if [ "$result" -eq 200 ]; then
    exit 0
else
    echo "健康檢查失敗，HTTP狀態(tài)碼: $result"
    exit 1
fi

[Service]
HealthCheckSec=30  # 每30秒檢查一次
HealthCheckCmd=/opt/apps/healthcheck.sh
HealthCheckFailureAction=restart  # 檢查失敗則重啟

management:
  endpoints:
    web:
      exposure:
        include: health
  endpoint:
    health:
      show-details: always
      probes:
        enabled: true

[Unit]
StartLimitInterval=600  # 10分鐘內(nèi)
StartLimitBurst=5  # 最多重啟5次
StartLimitAction=poweroff  # 達到限制后關(guān)閉系統(tǒng)（極端情況）

[program:demo-app]
autorestart=unexpected  # 僅意外退出時重啟
exitcodes=0,143  # 正常退出狀態(tài)碼