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| - | ====== UNIX system administration references ====== | ||
| - | [ __[[vlsi:home|Home]]__ ] | ||
| - | [ __[[vlsi:workbook|Design WorkBook]]__ ] | ||
| - | [ __[[vlsi:workbook:computing|Back to index]]__ ] | ||
| - | |||
| - | |||
| - | == Contents == | ||
| - | |||
| - | * Introduction | ||
| - | * User accounts and groups | ||
| - | * Working with LVM | ||
| - | * <nowiki>SSH</nowiki> server/client config | ||
| - | * <nowiki>NFS</nowiki> | ||
| - | * Setup a <nowiki>CVS</nowiki> repository | ||
| - | * Setup an SVN repository | ||
| - | * ... | ||
| - | |||
| - | **Keywords:** | ||
| - | |||
| - | ====== Introduction ====== | ||
| - | |||
| - | NOT only the bare minimum!... | ||
| - | |||
| - | ====== Reference books ====== | ||
| - | |||
| - | * Æleen Frisch, //Essential System Administration//, O'Reilly, 3rd Edition, 2001 [x] | ||
| - | * D.J. Barrett and R.E. Silverman, //<nowiki>SSH</nowiki> The Secure Shell: The Definitive Guide//, O'Reilly, 2001 [x] | ||
| - | * and many, many others... | ||
| - | |||
| - | |||
| - | |||
| - | |||
| - | ====== User accounts and groups ====== | ||
| - | |||
| - | <code> | ||
| - | # cd /export/eltXXX/disk0/ | ||
| - | # mkdir users | ||
| - | </code> | ||
| - | |||
| - | <code> | ||
| - | # mkdir /users | ||
| - | </code> | ||
| - | |||
| - | |||
| - | |||
| - | <code> | ||
| - | # useradd [options] <username> | ||
| - | </code> | ||
| - | |||
| - | |||
| - | <code> | ||
| - | .... | ||
| - | </code> | ||
| - | |||
| - | |||
| - | <code> | ||
| - | # groupadd [options] <group name> | ||
| - | </code> | ||
| - | |||
| - | ====== SSH server configuration ====== | ||
| - | |||
| - | |||
| - | |||
| - | The SSH server’s configuration file is ''/etc/ssh/sshd_config''. | ||
| - | |||
| - | By default OpenSSH permits users (including root!) to login with their username/password combination. | ||
| - | |||
| - | |||
| - | SSH server configuration file: | ||
| - | |||
| - | ''/etc/ssh/sshd_config'' | ||
| - | |||
| - | |||
| - | To make changes effective, always restart the SSH service: | ||
| - | |||
| - | <code> | ||
| - | # /etc/init.d/sshd restart | ||
| - | </code> | ||
| - | |||
| - | |||
| - | |||
| - | \\ | ||
| - | __**Prevent root login**__ | ||
| - | |||
| - | <code> | ||
| - | PermitRootLogin no | ||
| - | </code> | ||
| - | |||
| - | |||
| - | |||
| - | \\ | ||
| - | __**Limit SSH access to a limited group of users**__ | ||
| - | |||
| - | As an extra security measure, you can create a new group on the server machine | ||
| - | and configure the SSH server to allow remote connections only for users member of that group. | ||
| - | |||
| - | <code> | ||
| - | AllowGroups <group name> | ||
| - | </code> | ||
| - | |||
| - | |||
| - | __**Setup the SSH server to use certificates for authentication**__ | ||
| - | |||
| - | [[http://www.g-loaded.eu/2005/11/10/ssh-with-keys/]] | ||
| - | |||
| - | ====== NFS setup ====== | ||
| - | |||
| - | ''/etc/exports'' | ||
| - | |||
| - | ====== Setup a CVS repository ====== | ||
| - | |||
| - | <code> | ||
| - | $ which cvs | ||
| - | /usr/bin/cvs | ||
| - | </code> | ||
| - | |||
| - | <code> | ||
| - | $ cvs -v | ||
| - | Concurrent Versions System (CVS) 1.11.23 (client/server) | ||
| - | ... | ||
| - | ... | ||
| - | </code> | ||
| - | |||
| - | |||
| - | |||
| - | <code> | ||
| - | # yum install cvs | ||
| - | </code> | ||
| - | |||
| - | |||
| - | |||
| - | Create a CVS root directory e.g. ''.cvsroot'' | ||
| - | |||
| - | <code> | ||
| - | # mkdir /export/eltXXX/disk0/.cvsroot | ||
| - | # chown cadmgr:mgrs .cvsroot/ | ||
| - | </code> | ||
| - | |||
| - | |||
| - | All the following instructions must be accomplished by by the user hosting the cvs repository, | ||
| - | which should be the ''cadmgr''. Login as ''cadmgr'' and then: | ||
| - | |||
| - | <code> | ||
| - | cd /export/eltXXX/disk0/.cvsroot | ||
| - | mkdir CVSROOT | ||
| - | setenv CVSROOT /export/eltXXX/disk0/.cvsroot | ||
| - | cvs checkout CVSROOT/modules | ||
| - | cvs init | ||
| - | </code> | ||
| - | |||
| - | |||
| - | [[http://www.thegeekstuff.com/2011/10/create-cvs-repository/]] | ||
| - | |||
| - | |||
| - | |||
| - | __**Basic CVS commands**__ \\ | ||
| - | |||
| - | * ''cvs checkout project'' or ''cvs checkout project/subdir'' | ||
| - | |||
| - | * ''cvs add <filename>'' | ||
| - | |||
| - | * ''cvs remove <file name>'' | ||
| - | |||
| - | * ''cvs commit -m "Versioning text message info"'' | ||
| - | |||
| - | * ''cvs commit -m "Versioning text message info" <filename>'' | ||
| - | |||
| - | |||
| - | ====== Setup an SVN repository ====== | ||
| - | |||
| - | <code> | ||
| - | $ which svn | ||
| - | /usr/bin/svn | ||
| - | </code> | ||
| - | |||
| - | By default, subversion is not installed on Scientific Linux 6.x | ||
| - | |||
| - | <code> | ||
| - | # yum install subversion | ||
| - | </code> | ||
| - | |||
| - | ====== ====== | ||
| - | \\ | ||
| - | ---- | ||
| - | |||
| - | Last update: [[pacher@to.infn.it|Luca Pacher]] - Nov 21, 2013 | ||
| - | ~~NOTOC~~ | ||