[toc]

注意事项

params.py代码中尽量不要写中文注释，否则安装服务时候可能报错

Traceback (most recent call last):
  File "/var/lib/ambari-agent/cache/stacks/HDP/3.1/services/DORIS/package/scripts/be_master.py", line 86, in <module>
    Master().execute()
  File "/usr/lib/ambari-agent/lib/resource_management/libraries/script/script.py", line 352, in execute
    method(env)
  File "/var/lib/ambari-agent/cache/stacks/HDP/3.1/services/DORIS/package/scripts/be_master.py", line 37, in install
    import params
  File "/var/lib/ambari-agent/cache/stacks/HDP/3.1/services/DORIS/package/scripts/params.py", line 40
SyntaxError: Non-ASCII character '\xe6' in file /var/lib/ambari-agent/cache/stacks/HDP/3.1/services/DORIS/package/scripts/params.py on line 40, but no encoding declared; see http://www.python.org/peps/pep-0263.html for detail

问题

自定义开发组件，配置中文预警在页面显示乱码

alerts.json配置文件内容如下

{
  "DORIS": {
    "service": [],
    "FRONTEND": [
      {
        "name": "doris_fe_server_process",
        "label": "Doris FE 中文测试",
        "description": "Doris FE 中文中文",
        "interval": 1,
        "scope": "ANY",
        "enabled": true,
        "source": {
          "type": "PORT",
          "uri": "{ {fe/http_port}}",
          "default_port": 8030,
          "reporting": {
            "ok": {
              "text": "TCP OK - {0:.3f}s response on port {1}"
            },
            "warning": {
              "text": "TCP OK - {0:.3f}s response on port {1}",
              "value": 1.5
            },
            "critical": {
              "text": "Connection failed",
              "value": 5
            }
          }
        }
      }
    ]
  }
}

页面乱码时在ambari数据库alert_definition表中也可以看到乱码，因为Ambari-server会读取该表的内容

tip:第一次安装服务时或者服务重启时才会读取一次表，然后放到缓存中进行使用

解决方法

下面2个方法可以按照顺序去检查一下

方法一

确认数据库、表格式是否为utf8

MySQL编码

在MySQL中执行show variables like '%char%';确认编码格式,如果不为utf8需要修改配置。

修改vim /etc/my.cnf

[mysqld]
character-set-server=utf8
[client]
default-character-set=utf8
[mysql]
default-character-set=utf8

保存配置文件，重启服务：service mysqld restart

表编码

数据库：ambari

修改 alert_definition 与 alert_current 表编码格式，修改为utf-8编码。

方法二

在/usr/sbin/ambari-server文件中添加

export LANG=en_US.UTF-8
export LC_ALL=en_US.UTF-8

重启服务ambari-server restart,然后卸载重新安装服务。恢复正常