klor's questions

Problema: não consigo alterar o ponto de montagem do disco ISCSI para outro diretório.

Atualmente tenho disco ISCSI montado em/iscsi2

Eu gostaria de alterá-lo para /iscsi

Alterei /iscsi2 para /iscsi em /etc/fstab, mas a montagem em /iscsi não teve êxito.

Reproduzindo etapas:

1. Monte /iscsi2 baseado em /etc/fstab. Falha porque o ponto de montagem já foi renomeado para /iscsi

   mount /iscsi2
   mount: can't find /iscsi2 in /etc/fstab
   

2. Montagem /iscsi2 com base no caminho do dispositivo, bem-sucedida.

   mount /dev/sdd1 /iscsi2
   

3. Mostra que está montado:

   lsblk -af | grep -i iscsi
   L¦sdd1 ext4   ISCSI_Backup2    3829ed05-f445-425d-8213-3b1c2d41fba /iscsi2
   

4. Desmontar /iscsi2:

   umount /iscsi2
   

5. Mostra que está desmontado:

   lsblk -af | grep -i iscsi
   L¦sdd1 ext4   ISCSI_Backup2    3829ed05-f445-425d-8213-3b1c2d41fba
   

6. Monte /iscsi com base no caminho do dispositivo. Fracassado.

   mount /dev/sdd1 /iscsi
   

7. Mostra que ainda está desmontado:

   lsblk -af | grep -i iscsi
   L¦sdd1 ext4   ISCSI_Backup2    3829ed05-f445-425d-8213-3b1c2d41fba
   

Alguma idéia de por que a montagem foi bem-sucedida em /iscsi2 e falhou em /iscsi ?

Eu tenho o seguinte problema de dependência libc6 no trecho Debian 9.12.

sudo apt install libc6-dev

Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 libc6-dev : Depends: libc6 (= 2.24-11+deb9u4) but 2.27-6 is to be installed
             Depends: libc-dev-bin (= 2.24-11+deb9u4) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Como posso corrigi-lo?

EDIT1: apt policy libc6

libc6:
  Installed: 2.27-6
  Candidate: 2.27-6
  Version table:
 *** 2.27-6 100
        100 /var/lib/dpkg/status
     2.24-11+deb9u4 500
        500 http://deb.debian.org/debian stretch/main amd64 Packages
     2.24-11+deb9u1 500
        500 http://security.debian.org/debian-security stretch/updates/main amd64 Packages

EDIT2:

sudo apt install libc6/stable libc6-bin/stable locales/stable
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Release 'stable' for 'libc6' was not found
E: Unable to locate package libc6-bin
E: Release 'stable' for 'locales' was not found

Moodle 3.7 Apache com resultados de proxy reverso ERR_TOO_MANY_REDIRECTS.

Eu tenho um site SSL com o seguinte arquivo vhosts:

<VirtualHost *:80>
    RewriteCond %{HTTPS} off
    RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}
</VirtualHost>     


<IfModule mod_ssl.c>
<VirtualHost *:443>
ServerName moodle.site.com:443

SSLEngine on
SecAuditEngine On
RewriteEngine On

    ProxyPreserveHost On
    ProxyPass / http://101.102.103.104:80/
    ProxyPassReverse / http://101.102.103.104:80/

</VirtualHost>                                  
</IfModule>

Eu também redireciono todas as solicitações de 80 portas para a porta SSL.

O comando

curl -I https://moodle.site.com/

resultados:

HTTP/1.1 303 See Other
Date: Fri, 09 Aug 2019 19:13:33 GMT
Server: Apache/2.4.38 (Debian)
Strict-Transport-Security: max-age=15768000; includeSubDomains
Location: https://moodle.site.com
Content-Language: en
Content-Type: text/html; charset=UTF-8

No Moodle config.php eu tenho:

$CFG->wwwroot   = 'https://moodle.site.com';
$CFG->reverseproxy = true;
$CFG->sslproxy  = 1;

Alguma idéia de por que recebo o erro "ERR_TOO_MANY_REDIRECTS" no Google Chrome, quando tento abrir o URL https://moodle.site.com ?

Usando o Debian 9.5, instalação nova. Eu quero instalar o mysql-server, mas me deparo com problemas de dependência.

sudo apt-get install mysql-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 mysql-server : Depends: default-mysql-server but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

apt-get install mysql-server default-mysql-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 default-mysql-server : Depends: mariadb-server-10.1 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

sudo apt-get install mysql-server default-mysql-server mariadb-server-10.1
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 mariadb-server-10.1 : Depends: libdbi-perl but it is not going to be installed
                       Recommends: libhtml-template-perl but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

sudo apt-get install mysql-server default-mysql-server mariadb-server-10.1 libhtml-template-perl
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 libhtml-template-perl : Depends: libcgi-pm-perl but it is not going to be installed or
                                  perl (< 5.19) but 5.26.2-7 is to be installed
 mariadb-server-10.1 : Depends: libdbi-perl but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

sudo apt-get install mysql-server default-mysql-server mariadb-server-10.1 libdbi-perl
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 libdbi-perl : Depends: perlapi-5.24.1
E: Unable to correct problems, you have held broken packages.

EDIT1 apt-cache policy::

apt-cache policy
Package files:
 100 /var/lib/dpkg/status
     release a=now
 500 http://security.debian.org/debian-security stretch/updates/contrib amd64 Packages
     release v=9,o=Debian,a=stable,n=stretch,l=Debian-Security,c=contrib,b=amd64
     origin security.debian.org
 500 http://security.debian.org/debian-security stretch/updates/main amd64 Packages
     release v=9,o=Debian,a=stable,n=stretch,l=Debian-Security,c=main,b=amd64
     origin security.debian.org
 500 http://deb.debian.org/debian stretch-updates/main amd64 Packages
     release o=Debian,a=stable-updates,n=stretch-updates,l=Debian,c=main,b=amd64
     origin deb.debian.org
 500 http://deb.debian.org/debian stretch/main amd64 Packages
     release v=9.5,o=Debian,a=stable,n=stretch,l=Debian,c=main,b=amd64
     origin deb.debian.org
Pinned packages:

EDIT2 apt policy perl perl-base::

apt policy perl perl-base
perl:
  Installed: 5.26.2-7
  Candidate: 5.26.2-7
  Version table:
 *** 5.26.2-7 100
        100 /var/lib/dpkg/status
     5.24.1-3+deb9u4 500
        500 http://deb.debian.org/debian stretch/main amd64 Packages
        500 http://security.debian.org/debian-security stretch/updates/main amd64 Packages
perl-base:
  Installed: 5.26.2-7
  Candidate: 5.26.2-7
  Version table:
 *** 5.26.2-7 100
        100 /var/lib/dpkg/status
     5.24.1-3+deb9u4 500
        500 http://deb.debian.org/debian stretch/main amd64 Packages
        500 http://security.debian.org/debian-security stretch/updates/main amd64 Packages

Como posso corrigir esses problemas de dependência?

O comando SED não substitui o bash no Debian, mas funciona na linha de comando.

Funciona na linha de comando:

sed -i 's|/dev/disk/by-label/SR6D4|/dev/disk/by-label/SR4D4|g' /etc/my/config.xml

Não funciona no script bash, não substitui a string:

from="SR6D4"
to="SR4D4"
path_from="/dev/disk/by-label/${from}"
path_to="/dev/disk/by-label/${to}"
echo "sed -i 's|${path_from}|${path_to}|g' $file"
sed -i 's|${path_from}|${path_to}|g' $file

Por que não substitui a string no arquivo ao usar sed no bash?