一、效果预览

如下图所示，这是修改后的效果：

二、修改位置

文件路径： ambari-metrics-assembly/src/main/package/deb/control/postinst

在原有创建 sink jar 软链逻辑后追加用户、组、目录初始化及权限配置，确保安装后 ams 用户可直接启动服务。

三、追加脚本片段

# Ensure group hadoop exists
if ! getent group hadoop >/dev/null; then
    groupadd hadoop
fi

# Ensure user ams exists and is part of hadoop group
if ! id ams >/dev/null 2>&1; then
    useradd -g hadoop -m -s /bin/bash ams
fi

# Directories to initialize
RESOURCE_MONITORING_DIR="/usr/lib/python2.6/site-packages/resource_monitoring"
LOG_COLLECTOR="/var/log/ambari-metrics-collector"
LOG_GRAFANA="/var/log/ambari-metrics-grafana"
LOG_MONITOR="/var/log/ambari-metrics-monitor"

RUN_COLLECTOR="/var/run/ambari-metrics-collector"
RUN_GRAFANA="/var/run/ambari-metrics-grafana"
RUN_MONITOR="/var/run/ambari-metrics-monitor"

log_dirs=("${LOG_COLLECTOR}" "${LOG_GRAFANA}" "${LOG_MONITOR}")
run_dirs=("${RUN_COLLECTOR}" "${RUN_GRAFANA}" "${RUN_MONITOR}")

# Batch create, chown, chmod
for dir in "${log_dirs[@]}" "${run_dirs[@]}"; do
    mkdir -p "${dir}"
    chown -R ams:hadoop "${dir}"
    chmod 755 "${dir}"
done

chown -R ams:hadoop "${RESOURCE_MONITORING_DIR}"
chmod -R 755 "${RESOURCE_MONITORING_DIR}"

注意

Ubuntu 22.04 默认 Python3，需将 RESOURCE_MONITORING_DIR 调整到实际 Python3 目录。

四、完整可替换 postinst

#!/bin/bash
set -e

HADOOP_LINK_NAME="/usr/lib/ambari-metrics-hadoop-sink/ambari-metrics-hadoop-sink.jar"
HADOOP_SINK_JAR="/usr/lib/ambari-metrics-hadoop-sink/${hadoop.sink.jar}"

FLUME_LINK_NAME="/usr/lib/flume/lib/ambari-metrics-flume-sink.jar"
FLUME_SINK_JAR="/usr/lib/flume/lib/${flume.sink.jar}"

KAFKA_LINK_NAME="/usr/lib/ambari-metrics-kafka-sink/ambari-metrics-kafka-sink.jar"
KAFKA_SINK_JAR="/usr/lib/ambari-metrics-kafka-sink/${kafka.sink.jar}"

JARS=(${HADOOP_SINK_JAR} ${FLUME_SINK_JAR} ${KAFKA_SINK_JAR})
LINKS=(${HADOOP_LINK_NAME} ${FLUME_LINK_NAME} ${KAFKA_LINK_NAME})

for index in ${!LINKS[*]}; do
  rm -f "${LINKS[$index]}" || true
  ln -s "${JARS[$index]}" "${LINKS[$index]}" || true
done

# 用户组与目录初始化
if ! getent group hadoop >/dev/null; then
  groupadd hadoop
fi

if ! id ams >/dev/null 2>&1; then
  useradd -g hadoop -m -s /bin/bash ams
fi

RESOURCE_MONITORING_DIR="/usr/lib/python2.6/site-packages/resource_monitoring"
LOG_COLLECTOR="/var/log/ambari-metrics-collector"
LOG_GRAFANA="/var/log/ambari-metrics-grafana"
LOG_MONITOR="/var/log/ambari-metrics-monitor"

RUN_COLLECTOR="/var/run/ambari-metrics-collector"
RUN_GRAFANA="/var/run/ambari-metrics-grafana"
RUN_MONITOR="/var/run/ambari-metrics-monitor"

log_dirs=("${LOG_COLLECTOR}" "${LOG_GRAFANA}" "${LOG_MONITOR}")
run_dirs=("${RUN_COLLECTOR}" "${RUN_GRAFANA}" "${RUN_MONITOR}")

for dir in "${log_dirs[@]}" "${run_dirs[@]}"; do
  mkdir -p "${dir}"
  chown -R ams:hadoop "${dir}"
  chmod 0755 "${dir}"
done

if [ -d "${RESOURCE_MONITORING_DIR}" ]; then
  chown -R ams:hadoop "${RESOURCE_MONITORING_DIR}"
  chmod -R 0755 "${RESOURCE_MONITORING_DIR}"
fi

exit 0