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Cloudera, BigData, Semantic IoT, Hadoop, NoSQL

Cloudera CDH/CDP 및 Hadoop EcoSystem, Semantic IoT등의 개발/운영 기술을 정리합니다. gooper@gooper.com로 문의 주세요.


Welcome to Linaro 13.04 (GNU/Linux 3.4.86 armv7l)

 * Documentation:  https://wiki.linaro.org/
Last login: Sun May 19 12:31:11 2019 from 192.168.10.50

1. root사용자로 전환
hadoop@master:~$ su - root     
Password: 

2. 무인증 모드로 들어가기 위해서 mysqld 중지
root@master:~# service mysql stop
mysql stop/waiting

3. mysqld_safe실행
root@master:~# /usr/bin/mysqld_safe --skip-grant &
[1] 1028
root@master:~# 100101 18:51:09 mysqld_safe Can't log to error log and syslog at the same time.  Remove all --log-error configuration options for --syslog to take effect.
100101 18:51:09 mysqld_safe Logging to '/var/log/mysql/error.log'.
100101 18:51:10 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql

3. 패스워드 재설정
root@master:~# mysql -uroot mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Welcome to the MySQL monitor.  Commands end with ; or g.
Your MySQL connection id is 1
Server version: 5.5.34-0ubuntu0.13.04.1 (Ubuntu)

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

mysql> update user set password=password('패스워드') where user='root';
Query OK, 4 rows affected (0.00 sec)
Rows matched: 4  Changed: 4  Warnings: 0

mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)

mysql> show tables;                 
+---------------------------+
| Tables_in_mysql           |
+---------------------------+
| columns_priv              |
| db                        |
| event                     |
| func                      |
| general_log               |
| help_category             |
| help_keyword              |
| help_relation             |
| help_topic                |
| host                      |
| ndb_binlog_index          |
| plugin                    |
| proc                      |
| procs_priv                |
| proxies_priv              |
| servers                   |
| slow_log                  |
| tables_priv               |
| time_zone                 |
| time_zone_leap_second     |
| time_zone_name            |
| time_zone_transition      |
| time_zone_transition_type |
| user                      |
+---------------------------+
24 rows in set (0.00 sec)

mysql> select * from user where user='root';
+-----------+------+-------------------------------------------+-------------+-------------+-------------+-------------+-------------+-----------+-------------+---------------+--------------+-----------+------------+-----------------+------------+------------+--------------+------------+-----------------------+------------------+--------------+-----------------+------------------+------------------+----------------+---------------------+--------------------+------------------+------------+--------------+------------------------+----------+------------+-------------+--------------+---------------+-------------+-----------------+----------------------+--------+-----------------------+
| Host      | User | Password                                  | Select_priv | Insert_priv | Update_priv | Delete_priv | Create_priv | Drop_priv | Reload_priv | Shutdown_priv | Process_priv | File_priv | Grant_priv | References_priv | Index_priv | Alter_priv | Show_db_priv | Super_priv | Create_tmp_table_priv | Lock_tables_priv | Execute_priv | Repl_slave_priv | Repl_client_priv | Create_view_priv | Show_view_priv | Create_routine_priv | Alter_routine_priv | Create_user_priv | Event_priv | Trigger_priv | Create_tablespace_priv | ssl_type | ssl_cipher | x509_issuer | x509_subject | max_questions | max_updates | max_connections | max_user_connections | plugin | authentication_string |
+-----------+------+-------------------------------------------+-------------+-------------+-------------+-------------+-------------+-----------+-------------+---------------+--------------+-----------+------------+-----------------+------------+------------+--------------+------------+-----------------------+------------------+--------------+-----------------+------------------+------------------+----------------+---------------------+--------------------+------------------+------------+--------------+------------------------+----------+------------+-------------+--------------+---------------+-------------+-----------------+----------------------+--------+-----------------------+
| localhost | root | *258579CE6F0EFC9766781DD3892D26498857E50B | Y           | Y           | Y           | Y           | Y           | Y         | Y           | Y             | Y            | Y         | Y          | Y               | Y          | Y          | Y            | Y          | Y                     | Y                | Y            | Y               | Y                | Y                | Y              | Y                   | Y                  | Y                | Y          | Y            | Y                      |          |            |             |              |             0 |           0 |               0 |                    0 |        |                       |
| master    | root | *258579CE6F0EFC9766781DD3892D26498857E50B | Y           | Y           | Y           | Y           | Y           | Y         | Y           | Y             | Y            | Y         | Y          | Y               | Y          | Y          | Y            | Y          | Y                     | Y                | Y            | Y               | Y                | Y                | Y              | Y                   | Y                  | Y                | Y          | Y            | Y                      |          |            |             |              |             0 |           0 |               0 |                    0 |        |                       |
| 127.0.0.1 | root | *258579CE6F0EFC9766781DD3892D26498857E50B | Y           | Y           | Y           | Y           | Y           | Y         | Y           | Y             | Y            | Y         | Y          | Y               | Y          | Y          | Y            | Y          | Y                     | Y                | Y            | Y               | Y                | Y                | Y              | Y                   | Y                  | Y                | Y          | Y            | Y                      |          |            |             |              |             0 |           0 |               0 |                    0 |        |                       |
| ::1       | root | *258579CE6F0EFC9766781DD3892D26498857E50B | Y           | Y           | Y           | Y           | Y           | Y         | Y           | Y             | Y            | Y         | Y          | Y               | Y          | Y          | Y            | Y          | Y                     | Y                | Y            | Y               | Y                | Y                | Y              | Y                   | Y                  | Y                | Y          | Y            | Y                      |          |            |             |              |             0 |           0 |               0 |                    0 |        |                       |
+-----------+------+-------------------------------------------+-------------+-------------+-------------+-------------+-------------+-----------+-------------+---------------+--------------+-----------+------------+-----------------+------------+------------+--------------+------------+-----------------------+------------------+--------------+-----------------+------------------+------------------+----------------+---------------------+--------------------+------------------+------------+--------------+------------------------+----------+------------+-------------+--------------+---------------+-------------+-----------------+----------------------+--------+-----------------------+
4 rows in set (0.00 sec)

mysql> quit
Bye

4. mysql daemon재실행
root@master:~# service mysql restart
stop: Unknown instance: 
mysql start/running, process 1465

5. 접속확인
root@master:~# mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or g.
Your MySQL connection id is 37
Server version: 5.5.34-0ubuntu0.13.04.1 (Ubuntu)

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| test               |
+--------------------+
4 rows in set (0.00 sec)
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110 hadoop 클러스터 실행 스크립트 정리 2018.03.20 4814
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108 임시 테이블에서 데이터를 읽어서 partitioned table에 입력하는 impala SQL문 예시 2023.11.10 4830
107 hue db에서 사용자가 가지는 정보 확인 2020.02.10 4840
106 Impala Admission Control 설정시 쿼리가 사용하는 메모리 사용량 판단 방법 2023.05.19 4840
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104 hadoop설치시 참고사항 2013.03.08 4846
103 spark에서 hive table을 읽어 출력하는 예제 소스 2017.03.09 4846
102 json으로 존재하는 데이터 parsing하기 2019.03.25 4848
101 banana pi에 hive 0.13.1+mysql(metastore)설치 file 2014.09.09 4856
100 VisualVM 1.3.9을 이용한 spark-submit JVM 모니터링을 위한 설정및 spark-submit실행 옵션 2016.10.28 4856
99 Mysql DB 생성 및 권한. 특정아이피, 대역에 대한 접근 허용 2017.05.04 4888
98 Kudu tablet이 FAILED일때 원인 확인 방법 2022.01.17 4892
97 oozie에서 share lib설정시 action type별로 구분하여 넣을것 2014.04.18 4899
96 Cacti로 Hadoop 모니터링 하기 file 2013.03.12 4901
95 [HA구성 이슈]oozie 2대를 L4로 HA구성했을때 발생하는 이슈 2023.01.17 4901
94 [보안/인증]javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target발생 원인/조치내용 2023.10.24 4902
93 갑자기 DataNode가 java.io.IOException: Premature EOF from inputStream를 반복적으로 발생시키다가 java.lang.OutOfMemoryError: Java heap space를 내면서 죽는 경우 조치방법 2017.07.19 4903
92 TLS/SSl설정시 방법및 참고 사항 2021.10.08 4925
91 [CDP7.1.7]BDR작업후 오류로 Diagnostic Data를 수집하는 동안 "No content to map due to end-of-input at [Source: (String)""; line: 1, column: 0]" 오류 발생시 조치 2024.02.20 4930
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