Linux – Rodrigo Silva e Silva

Excluiu arquivo no Linux, mas não liberou espaço?

Publicado em 8 de outubro de 2019 by rodrigosilvaesilva

Bom dia pessoal! Deletei os arquivos no Linux mas não liberou espaço? O que fazer! O exemplo abordado será um banco de dados

[root@bdora-orcl ~]# df -h
Filesystem               Size  Used Avail Use% Mounted on
devtmpfs                  40G     0   40G   0% /dev
tmpfs                     32G     0   32G   0% /dev/shm
tmpfs                     40G  172M   40G   1% /run
tmpfs                     40G     0   40G   0% /sys/fs/cgroup
/dev/mapper/ol-root       25G  6.2G   19G  25% /
/dev/sda1               1014M  315M  700M  32% /boot
/dev/mapper/VGU01-LVU01  395G  325G   71G  83% /u01
/dev/mapper/VGU02-LVU02  350G  311G   40G  89% /u02
tmpfs                    7.9G     0  7.9G   0% /run/user/54321
tmpfs                    7.9G     0  7.9G   0% /run/user/0
/dev/mapper/VG03-LV03    325G  269G   57G  83% /u03

[root@bdora-orcl ~]# df -h

Filesystem Size Used Avail Use% Mounted on

devtmpfs 40G 0 40G 0% /dev

tmpfs 32G 0 32G 0% /dev/shm

tmpfs 40G 172M 40G 1% /run

tmpfs 40G 0 40G 0% /sys/fs/cgroup

/dev/mapper/ol-root 25G 6.2G 19G 25% /

/dev/sda1 1014M 315M 700M 32% /boot

/dev/mapper/VGU01-LVU01 395G 325G 71G 83% /u01

/dev/mapper/VGU02-LVU02 350G 311G 40G 89% /u02

tmpfs 7.9G 0 7.9G 0% /run/user/54321

tmpfs 7.9G 0 7.9G 0% /run/user/0

/dev/mapper/VG03-LV03 325G 269G 57G 83% /u03

Como podem ver a partição /u02 está com apenas 40gb disponível Listando o total de arquivos na partição /u02 está com 139GB em uso [root@bdora-orcl ~]$ du -sh /u02 139G /u02…

Habilitar log de consultas lentas do MySQL

Publicado em 11 de janeiro de 2019 by rodrigosilvaesilva

Edite o my.cnf

shell> vi /etc/my.cnf

1	shell> vi /etc/my.cnf

Adicionar os parâmetros. long_query_time = Tempo gasto por uma consulta MySQL 5.6 ou anterior

slow_query_log = 1
log-slow-queries = /var/log/mysql-slow.log
long_query_time = 2

slow_query_log = 1

log-slow-queries = /var/log/mysql-slow.log

long_query_time = 2

Note: In MySQL 5.7, the variable log-slow-queries is deprecated. Use slow_query_log_file instead. MySQL 5.7

slow_query_log = 1
slow_query_log_file=/var/log/mysql-slow.log
long_query_time = 2

slow_query_log = 1

slow_query_log_file=/var/log/mysql-slow.log

long_query_time = 2

Crie o arquivo mysql-show.log

shell> touch /var/log/mysql-slow.log

1	shell> touch /var/log/mysql-slow.log

Ajustar permissão.

 shell> chown mysql:mysql /var/log/mysql-slow.log

1	shell> chown mysql:mysql /var/log/mysql-slow.log

Iniciar o monitoramento de consultas lentas.

shell> mysqldumpslow -a /var/log/mysql-slow.log

 Reading mysql slow query log from /var/log/mysql-slow.log

shell> mysqldumpslow -a /var/log/mysql-slow.log

Reading mysql slow query log from /var/log/mysql-slow.log

Fonte Plesk

Resetar senha root Oracle Linux 6.9

Publicado em 22 de outubro de 2018 by rodrigosilvaesilva

Resetar senha root Oracle Linux 6.9 Pressione Enter Selecione a opção de Kernel “Oracle Linux Server Unbreakable Enterprise Kernerl e pressione E para editar Selecione a Opção kernel /vmlinuz.. e pressione E para editar Ao final da linha quiet adicione 1, conforme imagem abaixo e Pressione Enter para salvar. Nessa tela, aperte b no Kernel…

Compartilhamento Samba com senha

Publicado em 22 de agosto de 2018 by rodrigosilvaesilva

Instalação Samba

[root@bdora~]# yum install samba samba-client samba-common
Loaded plugins: ulninfo
Setting up Install Process
Package samba-3.6.23-51.0.1.el6.x86_64 already installed and latest version
Package samba-common-3.6.23-51.0.1.el6.x86_64 already installed and latest version
Resolving Dependencies
--> Running transaction check
---> Package samba-client.x86_64 0:3.6.23-51.0.1.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

========================================================================================================================================================================
 Package                                Arch                             Version                                      Repository                                   Size
========================================================================================================================================================================
Installing:
 samba-client                           x86_64                           3.6.23-51.0.1.el6                            public_ol6_latest                            11 M

Transaction Summary
========================================================================================================================================================================
Install       1 Package(s)

Total download size: 11 M
Installed size: 40 M
Is this ok [y/N]: y
Downloading Packages:
samba-client-3.6.23-51.0.1.el6.x86_64.rpm                                                                                                        |  11 MB     00:23
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : samba-client-3.6.23-51.0.1.el6.x86_64                                                                                                                1/1
  Verifying  : samba-client-3.6.23-51.0.1.el6.x86_64                                                                                                                1/1

Installed:
  samba-client.x86_64 0:3.6.23-51.0.1.el6

Complete!

[root@bdora~]# yum install samba samba-client samba-common

Loaded plugins: ulninfo

Setting up Install Process

Package samba-3.6.23-51.0.1.el6.x86_64 already installed and latest version

Package samba-common-3.6.23-51.0.1.el6.x86_64 already installed and latest version

Resolving Dependencies

--> Running transaction check

---> Package samba-client.x86_64 0:3.6.23-51.0.1.el6 will be installed

--> Finished Dependency Resolution

Dependencies Resolved

========================================================================================================================================================================

Package Arch Version Repository Size

========================================================================================================================================================================

Installing:

samba-client x86_64 3.6.23-51.0.1.el6 public_ol6_latest 11 M

Transaction Summary

========================================================================================================================================================================

Install 1 Package(s)

Total download size: 11 M

Installed size: 40 M

Is this ok [y/N]: y

Downloading Packages:

samba-client-3.6.23-51.0.1.el6.x86_64.rpm | 11 MB 00:23

Running rpm_check_debug

Running Transaction Test

Transaction Test Succeeded

Running Transaction

Installing : samba-client-3.6.23-51.0.1.el6.x86_64 1/1

Verifying : samba-client-3.6.23-51.0.1.el6.x86_64 1/1

Installed:

samba-client.x86_64 0:3.6.23-51.0.1.el6

Complete!

Backup arquivo de conf

[root@bdora]# cp /etc/samba/smb.conf smb.conf.bkp

1	[root@bdora]# cp /etc/samba/smb.conf smb.conf.bkp

Alterar a linha security

security = user

1	security = user

Adicione no arquivo

[backup]
        comment = Backup
        path = /u02/bkp
        public = yes
        writable = yes
        printable=no
        valid users = backup

[backup]

comment = Backup

path = /u02/bkp

public = yes

writable = yes

printable=no

valid users = backup

Crie o usuário backup

[root@bdora]# useradd backup

1	[root@bdora]# useradd backup

Altere a senha usuário backup

[root@bdora]# smbpasswd -a backup
New SMB password:
Retype new SMB password:
Added user backup.

[root@bdora]# smbpasswd -a backup

New SMB password:

Retype new SMB password:

Added user backup.

Habilitar inicialização do Samba

chkconfig smb on

1	chkconfig smb on

chkconfig nmb on

1	chkconfig nmb on

Checar se foi adicionado

[root@bdora ]# chkconfig --list  | grep mb
nmb             0:off   1:off   2:on    3:on    4:on    5:on    6:off
smb             0:off   1:off   2:on    3:on    4:on    5:on    6:off

[root@bdora ]# chkconfig --list | grep mb

nmb 0:off 1:off 2:on 3:on 4:on 5:on 6:off

smb 0:off 1:off 2:on 3:on 4:on 5:on 6:off

Iniciar serviço Samba

[root@bdora]# service smb start
Starting SMB services:                                     [  OK  ]

1 2	[root@bdora]# service smb start Starting SMB services: [ OK ]

[root@bdora]# service nmb start
Starting NMB services:                                     [  OK  ]

1 2	[root@bdora]# service nmb start Starting NMB services: [ OK ]

Compartilhamento Samba sem senha

Publicado em 22 de agosto de 2018 by rodrigosilvaesilva

Instalação Samba

[root@bdora~]# yum install samba samba-client samba-common
Loaded plugins: ulninfo
Setting up Install Process
Package samba-3.6.23-51.0.1.el6.x86_64 already installed and latest version
Package samba-common-3.6.23-51.0.1.el6.x86_64 already installed and latest version
Resolving Dependencies
--> Running transaction check
---> Package samba-client.x86_64 0:3.6.23-51.0.1.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

========================================================================================================================================================================
 Package                                Arch                             Version                                      Repository                                   Size
========================================================================================================================================================================
Installing:
 samba-client                           x86_64                           3.6.23-51.0.1.el6                            public_ol6_latest                            11 M

Transaction Summary
========================================================================================================================================================================
Install       1 Package(s)

Total download size: 11 M
Installed size: 40 M
Is this ok [y/N]: y
Downloading Packages:
samba-client-3.6.23-51.0.1.el6.x86_64.rpm                                                                                                        |  11 MB     00:23
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : samba-client-3.6.23-51.0.1.el6.x86_64                                                                                                                1/1
  Verifying  : samba-client-3.6.23-51.0.1.el6.x86_64                                                                                                                1/1

Installed:
  samba-client.x86_64 0:3.6.23-51.0.1.el6

Complete!

[root@bdora~]# yum install samba samba-client samba-common

Loaded plugins: ulninfo

Setting up Install Process

Package samba-3.6.23-51.0.1.el6.x86_64 already installed and latest version

Package samba-common-3.6.23-51.0.1.el6.x86_64 already installed and latest version

Resolving Dependencies

--> Running transaction check

---> Package samba-client.x86_64 0:3.6.23-51.0.1.el6 will be installed

--> Finished Dependency Resolution

Dependencies Resolved

========================================================================================================================================================================

Package Arch Version Repository Size

========================================================================================================================================================================

Installing:

samba-client x86_64 3.6.23-51.0.1.el6 public_ol6_latest 11 M

Transaction Summary

========================================================================================================================================================================

Install 1 Package(s)

Total download size: 11 M

Installed size: 40 M

Is this ok [y/N]: y

Downloading Packages:

samba-client-3.6.23-51.0.1.el6.x86_64.rpm | 11 MB 00:23

Running rpm_check_debug

Running Transaction Test

Transaction Test Succeeded

Running Transaction

Installing : samba-client-3.6.23-51.0.1.el6.x86_64 1/1

Verifying : samba-client-3.6.23-51.0.1.el6.x86_64 1/1

Installed:

samba-client.x86_64 0:3.6.23-51.0.1.el6

Complete!

Backup arquivo de conf

[root@bdora]# cp /etc/samba/smb.conf smb.conf.bkp

1	[root@bdora]# cp /etc/samba/smb.conf smb.conf.bkp

Alterar a linha security

security = share

1	security = share

Adicione no arquivo

[backup]
        comment = Backup
        path = /u02/bkp
        public = yes
        writable = yes
        printable=no

[backup]

comment = Backup

path = /u02/bkp

public = yes

writable = yes

printable=no

Habilitar inicialização do Samba

chkconfig smb on

1	chkconfig smb on

chkconfig nmb on

1	chkconfig nmb on

Checar se foi adicionado

[root@bdora ]# chkconfig --list  | grep mb
nmb             0:off   1:off   2:on    3:on    4:on    5:on    6:off
smb             0:off   1:off   2:on    3:on    4:on    5:on    6:off

[root@bdora ]# chkconfig --list | grep mb

nmb 0:off 1:off 2:on 3:on 4:on 5:on 6:off

smb 0:off 1:off 2:on 3:on 4:on 5:on 6:off

Iniciar serviço Samba

[root@bdora]# service smb start
Starting SMB services:                                     [  OK  ]

1 2	[root@bdora]# service smb start Starting SMB services: [ OK ]

[root@bdora]# service nmb start
Starting NMB services:                                     [  OK  ]

1 2	[root@bdora]# service nmb start Starting NMB services: [ OK ]

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