April 2018 – itbakery

ติดตั้ง postgresql จาก source

เมื่อวันที่ 1 มีนาคม 2018 ที่ผ่านมา postgresql ได้ประกาศ release postgresql 10.3 ลองมาทดสอบการใช้งานโดยการติดตั้งผ่าน Source กันดู

$ sudo su -
# dnf install gcc zlib-devel readline-devel 
# cd /opt
# wget https://ftp.postgresql.org/pub/source/v10.3/postgresql-10.3.tar.gz
# tar xvf postgresql-10.3.tar.gz
# cd postgresql-10.3
# ./configure --prefix=/opt/postgresql-10.3
# make
# make install

# ls /opt/postgresql-10.3/bin

$ sudo su -

# dnf install gcc zlib-devel readline-devel

# cd /opt

# wget https://ftp.postgresql.org/pub/source/v10.3/postgresql-10.3.tar.gz

# tar xvf postgresql-10.3.tar.gz

# cd postgresql-10.3

# ./configure --prefix=/opt/postgresql-10.3

# make

# make install

# ls /opt/postgresql-10.3/bin

สร้าง user สำหรับใช้งาน เนื่องจากเราทำงานใน ฐานะของ root และ ก่อนการใช้งานจะต้องสร้าง user ชื่อ postgres แทน root

# useradd postgres
# passwd postgres
# mkdir -p /pgdatabase/data
# chown -R postgres. /pgdatabase/data
# ls -ld /pgdatabase/data
drwxr-xr-x 2 postgres postgres 4096 Apr  8 21:02 /pgdatabase/data

# echo 'export PATH=$PATH:/opt/postgresql-10.3/bin' > /etc/profile.d/postgres.sh

# useradd postgres

# passwd postgres

# mkdir -p /pgdatabase/data

# chown -R postgres. /pgdatabase/data

# ls -ld /pgdatabase/data

drwxr-xr-x 2 postgres postgres 4096 Apr 8 21:02 /pgdatabase/data

# echo 'export PATH=$PATH:/opt/postgresql-10.3/bin' > /etc/profile.d/postgres.sh

ขั้นตอน initial Database โดยให้เปลี่ยนเป็น user postgres

# su - postgres
[postgres@localhost~]$ initdb -D /pgdatabase/data/ -U postgres -W
...
Success. You can now start the database server using:

    pg_ctl -D /pgdatabase/data/ -l logfile start

# su - postgres

[postgres@localhost~]$ initdb -D /pgdatabase/data/ -U postgres -W

...

Success. You can now start the database server using:

pg_ctl -D /pgdatabase/data/ -l logfile start

รายละเดียด -D ที่เก็บ Database -U Database Super user -W หยุดถาม password เริ่มต้น start ด้วยคำสั่ง pg_ctl

$ pg_ctl -D /pgdatabase/data/ -l logfile start
waiting for server to start.... done
server started

[postgres@itbakery ~]$ psql -U postgres
psql (10.3)
Type "help" for help.

postgres=# alter role postgres with password 'postgres';   <--set password 
ALTER ROLE

postgres=# \l
                                  List of databases
   Name    |  Owner   | Encoding |   Collate   |    Ctype    |   Access privileges   
-----------+----------+----------+-------------+-------------+-----------------------
 postgres  | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | 
 template0 | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =c/postgres          +
           |          |          |             |             | postgres=CTc/postgres
 template1 | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =c/postgres          +
           |          |          |             |             | postgres=CTc/postgres
(3 rows)

postgres=# \q

$ pg_ctl -D /pgdatabase/data/ -l logfile stop
waiting for server to shut down.... done
server stopped

$ pg_ctl -D /pgdatabase/data/ -l logfile start

waiting for server to start.... done

server started

[postgres@itbakery ~]$ psql -U postgres

psql (10.3)

Type "help" for help.

postgres=# alter role postgres with password 'postgres'; <--set password

ALTER ROLE

postgres=# \l

List of databases

-----------+----------+----------+-------------+-------------+-----------------------

(3 rows)

postgres=# \q

$ pg_ctl -D /pgdatabase/data/ -l logfile stop

waiting for server to shut down.... done

server stopped

ปรับแต่ง config

cd /pgdatabase/data/
...
postgresql.conf  pg_hba.conf

cd /pgdatabase/data/

...

postgresql.conf pg_hba.conf

…

ติดตั้ง postgresql จาก source Read More »

Reset ค่า password root ให้แก่ mysql และ mariadb

linux / By admin_itbakery

ปัญหาที่เกิดขึ้นบ่อย คือต้องการ ที่จะ reset password เนื่องจากไม่ทราบว่าเดิมใข้ค่า password อะไรสามารถทำได้ ง่ายๆ มีขั้นตอนดังนี้ ขั้นตอนที่ 1

MariaDB [(none)]> SHOW VARIABLES LIKE "%version%";
+-------------------------+----------------------------------+
| Variable_name           | Value                            |
+-------------------------+----------------------------------+
| innodb_version          | 5.7.21                           |
| protocol_version        | 10                               |
| slave_type_conversions  |                                  |
| version                 | 10.2.14-MariaDB                  |
| version_comment         | MariaDB Server                   |
| version_compile_machine | x86_64                           |
| version_compile_os      | Linux                            |
| version_malloc_library  | system                           |
| version_ssl_library     | OpenSSL 1.1.0h-fips  27 Mar 2018 |
| wsrep_patch_version     | wsrep_25.23                      |
+-------------------------+----------------------------------+
10 rows in set (0.00 sec)

MariaDB [(none)]> SHOW VARIABLES LIKE "%version%";

+-------------------------+----------------------------------+

| Variable_name | Value |

+-------------------------+----------------------------------+

| innodb_version | 5.7.21 |

| protocol_version | 10 |

| slave_type_conversions | |

| version | 10.2.14-MariaDB |

| version_comment | MariaDB Server |

| version_compile_machine | x86_64 |

| version_compile_os | Linux |

| version_malloc_library | system |

| version_ssl_library | OpenSSL 1.1.0h-fips 27 Mar 2018 |

| wsrep_patch_version | wsrep_25.23 |

+-------------------------+----------------------------------+

10 rows in set (0.00 sec)

ขั้นตอนที่ 2 หยุดการทำงานของ mariadb-server และ start แบบ safe

$ sudo systemctl stop mariadb
$ sudo mysqld_safe --skip-grant-tables --skip-networking &

1 2	$ sudo systemctl stop mariadb $ sudo mysqld_safe --skip-grant-tables --skip-networking &

ขั้นตอนที่ 3 Login แบบไม่ต้องใช้ password

$ mysql -u root
Your MariaDB connection id is 10
Server version: 10.2.14-MariaDB MariaDB Server

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

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

MariaDB [(none)]>

$ mysql -u root

Your MariaDB connection id is 10

Server version: 10.2.14-MariaDB MariaDB Server

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

MariaDB [(none)]>

ขั้นตอนที่ 4 ตั้งค่า password ใหม่

MariaDB [(none)]> FLUSH PRIVILEGES;
MariaDB [(none)]> ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password';
MariaDB [(none)]> FLUSH PRIVILEGES;

MariaDB [(none)]> FLUSH PRIVILEGES;

MariaDB [(none)]> ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password';

MariaDB [(none)]> FLUSH PRIVILEGES;

ขั้นตอนที่ 5 หยุดการทำงาน แบบ safe และค่อย start แบบปรกติ

$ sudo kill `/var/run/mariadb/mariadb.pid`
$ sudo systemctl start mariadb

1 2	$ sudo kill `/var/run/mariadb/mariadb.pid` $ sudo systemctl start mariadb

มาเริ่มต้นใช้งาน jenkins และ Docker

linux / By admin_itbakery

ทดสอบการใช้งาน jenkins ผ่านทาง Docker 1 ติดตั้ง Docker Binary

$ wget https://download.docker.com/linux/static/nightly/x86_64/docker-18.05.0-ce-dev.tgz
$ tar xvf docker-18.05.0-ce-dev.tgz 
$ sudo cp docker/* /usr/bin/
$ sudo dockerd &

INFO[2018-04-07T20:57:51.102264931+07:00] Docker daemon commit=b0b2879 graphdriver(s)=overlay2 version=18.05.0-ce-dev
INFO[2018-04-07T20:57:51.102984186+07:00] Daemon has completed initialization 
INFO[2018-04-07T20:57:51.110894479+07:00] API listen on /var/run/docker.sock

$ wget https://download.docker.com/linux/static/nightly/x86_64/docker-18.05.0-ce-dev.tgz

$ tar xvf docker-18.05.0-ce-dev.tgz

$ sudo cp docker/* /usr/bin/

$ sudo dockerd &

INFO[2018-04-07T20:57:51.102264931+07:00] Docker daemon commit=b0b2879 graphdriver(s)=overlay2 version=18.05.0-ce-dev

INFO[2018-04-07T20:57:51.102984186+07:00] Daemon has completed initialization

INFO[2018-04-07T20:57:51.110894479+07:00] API listen on /var/run/docker.sock

2 ดาวโหลด jenkins image

$ sudo docker pull jenkins/jenkins
...
Status: Downloaded newer image for jenkins/jenkins:latest
$ docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
jenkins/jenkins     latest              aa68f8a962d3        5 days ago          804MB

$ sudo docker pull jenkins/jenkins

...

Status: Downloaded newer image for jenkins/jenkins:latest

$ docker images

REPOSITORY TAG IMAGE ID CREATED SIZE

jenkins/jenkins latest aa68f8a962d3 5 days ago 804MB

3 เริ่มต้น Docker

$ mkdir -p ~/Jenkins/jenkins_home
$ sudo docker run -d -p 8080:8080 -p 50000:50000 -v $HOME/Jenkins/jenkins_home:/var/jenkins_home -t --name jenkins jenkins/jenkins

1 2	$ mkdir -p ~/Jenkins/jenkins_home $ sudo docker run -d -p 8080:8080 -p 50000:50000 -v $HOME/Jenkins/jenkins_home:/var/jenkins_home -t --name jenkins jenkins/jenkins

4 ดูค่า temporary password

$ cat ~/Jenkins/jenkins_home/secrets/initialAdminPassword
127744586d66486b8c68e81092a72d27

1 2	$ cat ~/Jenkins/jenkins_home/secrets/initialAdminPassword 127744586d66486b8c68e81092a72d27

8 เปิด browser localhost:8080 และนำค่า password มาใส่ หลังจากกรอก password ก็ติดตั้ง plugin สร้าง admin user และ กำหนด password เริ่มต้น การใช้งาน หยุด Docker

$ sudo docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                                              NAMES
5ccc111e7b60        jenkins/jenkins     "/sbin/tini -- /usr/…"   34 minutes ago      Up 7 seconds        0.0.0.0:8080->8080/tcp, 0.0.0.0:50000->50000/tcp   jenkins

(docker name jenkins)
$ sudo docker stop jenkins
$ sudo docker start jenkins

$ sudo docker ps

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

5ccc111e7b60 jenkins/jenkins "/sbin/tini -- /usr/…" 34 minutes ago Up 7 seconds 0.0.0.0:8080->8080/tcp, 0.0.0.0:50000->50000/tcp jenkins

(docker name jenkins)

$ sudo docker stop jenkins

$ sudo docker start jenkins

มาเริ่มต้นสร้าง marven project ด้วย command line

$ mvn -version
$ mkdir ~/MavenProject
$ cd ~/MavenProject
mvn archetype:generate
...
Choose a number or apply filter (format: [groupId:]artifactId, case sensitive contains): 1162: (enter ผ่าน)

Choose org.apache.maven.archetypes:maven-archetype-quickstart version: 
1: 1.0-alpha-1
2: 1.0-alpha-2
3: 1.0-alpha-3
4: 1.0-alpha-4
5: 1.0
6: 1.1
Choose a number: 6: 6
Define value for property 'groupId': net.itbakery <-- ค่า groupID
Define value for property 'artifactId': mavendemo <-- ค่า artifactID หรือ project จะเป็น directory
Define value for property 'version' 1.0-SNAPSHOT: : 
Define value for property 'package' net.itbakery: :  

$ cd mavendemo     <-- project ที่สร้างขั้น
$ tree .
.
├── pom.xml
└── src
    ├── main
    │   └── java
    │       └── net
    │           └── itbakery
    │               └── App.java
    └── test
        └── java
            └── net
                └── itbakery
                    └── AppTest.java

9 directories, 3 files
$ mvn package
[INFO] 
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mavendemo ---
[INFO] Building jar: /home/mee/MavenProject/mavendemo/target/mavendemo-1.0-SNAPSHOT.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.341 s
[INFO] Finished at: 2018-04-07T22:52:04+07:00
[INFO] ------------------------------------------------------------------------
$ java -cp target/mavendemo-1.0-SNAPSHOT.jar  net.itbakery.App
Hello World!


$ mvn test
...

-------------------------------------------------------
 T E S T S
-------------------------------------------------------
Running net.itbakery.AppTest
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.006 sec

Results :

Tests run: 1, Failures: 0, Errors: 0, Skipped: 0

[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.544 s
[INFO] Finished at: 2018-04-07T22:00:30+07:00
[INFO] ------------------------------------------------------------------------

$ mvn -version

$ mkdir ~/MavenProject

$ cd ~/MavenProject

mvn archetype:generate

...

Choose a number or apply filter (format: [groupId:]artifactId, case sensitive contains): 1162: (enter ผ่าน)

Choose org.apache.maven.archetypes:maven-archetype-quickstart version:

1: 1.0-alpha-1

2: 1.0-alpha-2

3: 1.0-alpha-3

4: 1.0-alpha-4

5: 1.0

6: 1.1

Choose a number: 6: 6

Define value for property 'groupId': net.itbakery <-- ค่า groupID

Define value for property 'artifactId': mavendemo <-- ค่า artifactID หรือ project จะเป็น directory

Define value for property 'version' 1.0-SNAPSHOT: :

Define value for property 'package' net.itbakery: :

$ cd mavendemo <-- project ที่สร้างขั้น

$ tree .

├── pom.xml

└── src

├── main

│ └── java

│ └── net

│ └── itbakery

│ └── App.java

└── test

└── java

└── net

└── itbakery

└── AppTest.java

9 directories, 3 files

$ mvn package

[INFO]

[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mavendemo ---

[INFO] Building jar: /home/mee/MavenProject/mavendemo/target/mavendemo-1.0-SNAPSHOT.jar

[INFO] ------------------------------------------------------------------------

[INFO] BUILD SUCCESS

[INFO] ------------------------------------------------------------------------

[INFO] Total time: 1.341 s

[INFO] Finished at: 2018-04-07T22:52:04+07:00

[INFO] ------------------------------------------------------------------------

$ java -cp target/mavendemo-1.0-SNAPSHOT.jar net.itbakery.App

Hello World!

$ mvn test

...

-------------------------------------------------------

T E S T S

-------------------------------------------------------

Running net.itbakery.AppTest

Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.006 sec

Results :

Tests run: 1, Failures: 0, Errors: 0, Skipped: 0

[INFO] ------------------------------------------------------------------------

[INFO] BUILD SUCCESS

[INFO] ------------------------------------------------------------------------

[INFO] Total time: 1.544 s

[INFO] Finished at: 2018-04-07T22:00:30+07:00

[INFO] ------------------------------------------------------------------------

Test file Apptest.java …

มาเริ่มต้นใช้งาน jenkins และ Docker Read More »

ปรับแต่ง Sublime ให้ใช้ Dart

mobile / By admin_itbakery

การตั้งค่าให้ Sublime Text 3 ให้ใช้ Dart ให้ทำการ install Dart ไปยัง Tools > Command plette เลือก Dart ตั้งค่าของ preference

 Put this in User/Preferences.sublime-settings:
  
  	{
  	  "dart_sdk_path": "/path/to/dart-sdk"
  	}

Put this in User/Preferences.sublime-settings:

{

"dart_sdk_path": "/path/to/dart-sdk"

}

Month: April 2018