Versions Compared

Old Version 1

changes.mady.by.user jtel Support

Saved on

compared with

New Version Current

changes.mady.by.user jtel Support

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.
Comment: Removed translated content for 'fr'
Sv translation
languageen

Table of Contents
maxLevel3
printablefalse

Introduction

Regardless of the function a server is to perform, except STORE (which makes the data area available to itself), the data area will be linked. The , the first step is to mount the STORE to the machine. The first VM to be set up should therefore be the role STORE.

Linking the data area

Configure STORE Mount

First a connection to the common data area is established. To do this, the directory to mount STORE is created. STORE will be mounted in /home/jtel/shared. The path for the mount point is created with the following commands:

Translations Ignore


Code Block
titleConnect Datastore - create directory
mkdir /home/jtel/shared
chown jtel:jtel /home/jtel/shared


Mount with Credentials in fstab

The mount IThe connection is then configured in the /etc/fstab file. The file can be edited with a text editor. The following entry must be inserted into the file as an example (replace password with the corresponding password):

Translations Ignore
Code Block
titleAdditional entry in / etc / fstab
cat <<EOFF >> /etc/fstab
//acd-store/shared    /home/jtel/shared    cifs    user=jtel,password=<password>,uid=jtel,gid=jtel,file_mode=0755,dir_mode=0755    0    0
EOFF

, or the following command will append the required line to the file:

Status
colourRed
titleCaution Password

Translations Ignore


Code Block

ATTENTION: to connect old file shares (SMB 1.0) under CentOS 7.x the following entry is necessary:

Translations Ignore
Additional entry in / etc / fstab
Code Block
title
cat <<EOFF >> /etc/fstab
//acd-store/shared    /home/jtel/shared    cifs    user=jtel,password=<password>,uid=jtel,gid=jtel,file_mode=0755,dir_mode=0755,vers=1.0    0    0
EOFF


Notes:

  • If an external STORE is being mounted, it my be necessary to supply a domain name. In this case add the following in the options part of the fstab entry:
  • domain=DOMAINNAME

Mount with external Credentials file

To mount with the credentials stored in a separate file, proceed as follows.

Create a file, for example in /etc/store_credentials with the following content:

Status
colourRed
titleCaution Password
The first block of the line describes the UNC of the release. Here the name of the computer (here acd-lb) must be adapted if necessary. The third block contains among other things the credentials for sharing. If a domain name is also required here, it can be added with an additional parameter domain=DOMAINNAME separated by commas. If it is desired for security reasons not to store the credentials in the /etc/fstab file, which for system-immanent reasons has no special reading restrictions, they can be stored in a separate file. Such a file would then have the following format (replace password with the appropriate password):

Translations Ignore


title
Code Block
File with separate access data
domain=MYDOMAIN
username=jtel
password=<password>
This file can be placed in any useful location (e.g. root home directory or directly in the /etc directory) and can be given read-only access to root. Assuming that such a file would be named /etc/jtel-credentials, the file's permissions are secured with the following commands


Next, secure the file permissions:

Translations Ignore


Code Block
languagebashtitleBackup of the access data file
chown root:root /etc/jtelstore-credentials
chmod 400 /etc/jtelstore-credentials
In the file


And finally, add the /etc/fstab

the

entry

would then look like this

:

Translations Ignore


Code Block
titleSecure entry in / etc / fstab
//acd-store/shared	/home/jtel/shared	cifs	credentials=/etc/jtel-credentials,uid=jtel,gid=jtel,file_mode=0755,dir_mode=0755	0	0

ATTENTION: to connect old file shares (SMB 1.0) under CentOS 7.x the following entry is necessary:

Translations Ignore
Code Block
titleSecure entry in / etc / fstab
cat <<EOFF >> /etc/fstab
//acd-store/shared	    /home/jtel/shared	cifs	    cifs    credentials=/etc/jtel-credentials,uid=jtel,gid=jtel,file_mode=0755,dir_mode=0755,vers=1.0	0	0    0    0
EOFF


Mount STORE

The After configuring the connection, the share can now be mounted. This is done with the command:

Translations Ignore


Code Block
languagebash
titleConnect the share
mount /home/jtel/shared


After connectingmounting, a short test shows that the files can be accessed:

Translations Ignore


Access test
Code Block
title
[root@acd-db2 ~]# ls -la /home/jtel/shared/
total 52
drwxr-xr-x.  9 jtel jtel 4096 Mar 30 10:35 .
drwx------.  6 jtel jtel 4096 Jun 12 17:03 ..
drwxr-xr-x.  5 jtel jtel 4096 Mar 22 12:13 Data
drwxr-xr-x.  4 root root 4096 Jun 14 08:37 Import
drwxr-xr-x.  7 jtel jtel 4096 Jun 13 15:37 JTEL
drwxr-xr-x. 16 jtel jtel 4096 Mar 23 15:55 JTELCarrierPortal
drwxr-xr-x.  3 jtel jtel 4096 Jun 13 15:40 LogFiles
drwxr-xr-x.  3 jtel jtel 4096 Feb 10 12:49 LogFilesCall


Securing the

mount

Mount

Adjust the crontab so Adding the following to crontab will ensure that the mount itself is restored, so that the boot order of the systems is not importanteven if STORE is rebooted:

Translations Ignore


Code Block
languagebashtitleSecuring the mount
cat <<EOFF >> /etc/crontab
*/1  *  *  *  * root bash -c "if [ ! -d /home/jtel/shared/Data/system ]; then mount /home/jtel/shared ; fi"
EOFF


This can be tested as follows:

Translations Ignore


Code Block
languagebashtitleTesting ensuring the mount
ls /home/jtel/shared
(files are there and are listed)
 
umount /home/jtel/shared
ls /home/jtel/shared
(files are no longer there and are not listed)

... Wait up to one minute
 
ls /home/jtel/shared
(files are there and are listed)





Sv translation
languagede

Table of Contentsstatus
maxLevel3
printablefalse

Einführung

Unabhängig von der Funktion die ein Server übernehmen soll, ausser STORE (der den Datenbereich sich selbst zur Verfügung stellt), wird das Datenbereich angebunden. Als erster VM sollte also die Rolle STORE fertig eingerichtet sein.

Anbinden des Datenbereiches

Als erstes wird eine Verbindung zum gemeinsamen Datenbereich hergestellt. Hierfür wird der Pfad für den Einhängepunkt mit folgenden Befehlen erstellt:

Translations Ignore
Code Block
titleConnect Datastore - create directory
mkdir /home/jtel/shared
chown jtel:jtel /home/jtel/shared

Im Anschluss wird die Verbindung in die Datei /etc/fstab konfiguriert. Die Datei kann mit einem Texteditor bearbeitet werden. Folgender Eintrag muss exemplarisch in die Datei eingefügt werden (password mit den entsprechenden Passwort ersetzen):

Translations Ignore
Code Block
titleAdditional entry in / etc / fstab
cat <<EOFF >> /etc/fstab
//acd-store/shared    /home/jtel/shared    cifs    user=jtel,password=<password>,uid=jtel,gid=jtel,file_mode=0755,dir_mode=0755    0    0
EOFF

ACHTUNG: um alte File-Shares (SMB 1.0) anzubinden unter CentOS 7.x ist folgender Eintrag nötig:

Translations Ignore
Code Block
titleAdditional entry in / etc / fstab
cat <<EOFF >> /etc/fstab
//acd-store/shared    /home/jtel/shared    cifs    user=jtel,password=<password>,uid=jtel,gid=jtel,file_mode=0755,dir_mode=0755,vers=1.0    0    0
EOFF

Der erste Block der Zeile beschreibt den UNC der Freigabe. Hier muss gegebenenfalls der Name des Rechners (hier acd-lb) angepasst werden. Der dritte Block enthält unter anderem die Zugangsdaten zur Freigabe. Sollte hier auch Domainname notwendig sein, kann dieser mit einem zusätzlichen Parameter domain=DOMAINNAME durch Komma getrennt hinzugefügt werden. Ist es aus Sicherheitsgründen gewünscht, die Zugangsdaten nicht in der Datei /etc/fstab zu speichern, die aus systemimmanenten Gründen keine spezielle Leseeinschränkungen hat, so können diese in eine separate Datei ausgelagert werden. Eine solche Datei hätte dann folgendes Format (password mit den entsprechenden Passwort ersetzen):

Translations Ignore
Code Block
titleFile with separate access data
domain=MYDOMAIN
username=jtel
password=<password>

Diese Datei kann an einem beliebigen sinnvollen Ort (z.B. ins Home-Verzeichnis von root oder direkt ins /etc Verzeichnis) abgelegt werden und mit Nur-Leserechte für root ausgestattet werden. Unter der Annahme dass eine solche Datei den Namen /etc/jtel-credentials tragen würde, werden die Berechtigungen der Datei mit folgenden Befehlen gesichert:

Translations Ignore
Code Block
languagebash
titleBackup of the access data file
chown root:root /etc/jtel-credentials
chmod 400 /etc/jtel-credentials

In der Datei /etc/fstab würde der Eintrag dann folgendermaßen aussehen.

Translations Ignore
Code Block
titleSecure entry in / etc / fstab
//acd-store/shared	/home/jtel/shared	cifs	credentials=/etc/jtel-credentials,uid=jtel,gid=jtel,file_mode=0755,dir_mode=0755	0	0

colourRed
titleTHIS PAGE IS ONLY AVAILABLE IN ENGLISH

ACHTUNG: um alte File-Shares (SMB 1.0) anzubinden unter CentOS 7.x ist folgender Eintrag nötig:

Translations Ignore
Code Block
titleSecure entry in / etc / fstab
//acd-store/shared	/home/jtel/shared	cifs	credentials=/etc/jtel-credentials,uid=jtel,gid=jtel,file_mode=0755,dir_mode=0755,vers=1.0	0	0

Nach dem Konfigurieren der Verbindung kann die Freigabe nun eingehängt werden. Dies erfolgt mit dem Befehl:

Translations Ignore
Code Block
languagebash
titleConnect the share
mount /home/jtel/shared

Nach dem Verbinden zeigt ein kurzer Test, dass auf die Dateien zugegriffen werden kann:

Translations Ignore
Code Block
titleAccess test
[root@acd-db2 ~]# ls -la /home/jtel/shared/
total 52
drwxr-xr-x.  9 jtel jtel 4096 Mar 30 10:35 .
drwx------.  6 jtel jtel 4096 Jun 12 17:03 ..
drwxr-xr-x.  5 jtel jtel 4096 Mar 22 12:13 Data
drwxr-xr-x.  4 root root 4096 Jun 14 08:37 Import
drwxr-xr-x.  7 jtel jtel 4096 Jun 13 15:37 JTEL
drwxr-xr-x. 16 jtel jtel 4096 Mar 23 15:55 JTELCarrierPortal
drwxr-xr-x.  3 jtel jtel 4096 Jun 13 15:40 LogFiles
drwxr-xr-x.  3 jtel jtel 4096 Feb 10 12:49 LogFilesCall

Sicherstellung des Mounts

Crontab anpassen, sodass der Mount selbst wiederhergestellt wird, und somit die Boot-Reihenfolge der Systeme auch unwichtig ist:

Translations Ignore
Code Block
languagebash
titleSecuring the mount
cat <<EOFF >> /etc/crontab
*/1  *  *  *  * root bash -c "if [ ! -d /home/jtel/shared/Data/system ]; then mount /home/jtel/shared ; fi"
EOFF

Dies kann wie folgt getestet werden:

Translations Ignore Code Block
languagebash
titleTesting ensuring the mount
ls /home/jtel/shared (files are there and are listed)   umount /home/jtel/shared ls /home/jtel/shared (files are no longer there and are not listed) ... Wait up to one minute   ls /home/jtel/shared (files are there and are listed)