部署启动脚本

#!/bin/bash
set -euo pipefail

APP_NAME="填写jar名称.jar"
APP_DIR="$(cd "$(dirname "$0")" && pwd)"
JAR_PATH="${APP_DIR}/${APP_NAME}"
RUN_TAG="${APP_NAME}"
# JAVA_BIN 优先用 JAVA_HOME，否则用系统 java
if [ -n "${JAVA_HOME:-}" ] && [ -x "${JAVA_HOME}/bin/java" ]; then
  JAVA_BIN="${JAVA_HOME}/bin/java"
else
  JAVA_BIN="java"
fi

LOG_DIR="./baseLogs/"
DUMP_DIR="./dump/"
GC_LOG="${LOG_DIR}/gc.log"
# 如果无法启动可以在这里app.log 看下JVM无法创建虚拟机的信息
APP_OUT="${LOG_DIR}/app.log"
START_LOG="${LOG_DIR}/startRecord.log"

HEAP_OPTS="-Xms4g -Xmx8g"
GC_OPTS="-XX:+UnlockExperimentalVMOptions -XX:+UseG1GC"
ERR_OPTS="" # "-XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=${DUMP_DIR} -XX:ErrorFile=${DUMP_DIR}/hs_err_pid%p.log -XX:+CreateMinidumpOnCrash"
SYS_PROPS="-Dspring.profiles.active=dev -Dserver.port=9000"

START_TIMEOUT=20
STOP_TIMEOUT=20

mkdir -p "${LOG_DIR}" "${DUMP_DIR}"

if [ ! -f "${JAR_PATH}" ]; then
  echo "[$(date +'%F %T')] JAR 不存在: ${JAR_PATH}" | tee -a "${START_LOG}"
  exit 1
fi

pids=$(pgrep -f "${RUN_TAG}" || true)
if [ -n "${pids}" ]; then
  echo "[$(date +'%F %T')] 正在停止进程: ${pids}" | tee -a "${START_LOG}"
  kill ${pids} || true
  for i in $(seq 1 ${STOP_TIMEOUT}); do
    sleep 1
    still=$(pgrep -f "${RUN_TAG}" || true)
    [ -z "${still}" ] && break
  done
  still=$(pgrep -f "${RUN_TAG}" || true)
  if [ -n "${still}" ]; then
    echo "[$(date +'%F %T')] 发送 KILL: ${still}" | tee -a "${START_LOG}"
    kill -9 ${still} || true
  fi
else
  echo "[$(date +'%F %T')] 无需停止，未发现旧进程" | tee -a "${START_LOG}"
fi

echo "[$(date +'%F %T')] 开始启动 ${APP_NAME}" | tee -a "${START_LOG}"

nohup ${JAVA_BIN:-java} \
  ${HEAP_OPTS} ${GC_OPTS} ${ERR_OPTS} ${SYS_PROPS} \
  -jar "${JAR_PATH}" \
  >> "${APP_OUT}" 2>&1 &

new_pid=$!
echo "[$(date +'%F %T')] 启动中，PID=${new_pid}" | tee -a "${START_LOG}"

for i in $(seq 1 ${START_TIMEOUT}); do
  if ps -p "${new_pid}" > /dev/null 2>&1; then
    echo "[$(date +'%F %T')] 启动成功 PID=${new_pid}" | tee -a "${START_LOG}"
    exit 0
  fi
  sleep 1
done

echo "[$(date +'%F %T')] 启动超时，检查日志 ${APP_OUT}" | tee -a "${START_LOG}"
exit 2