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  • Article (Print) (78)
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84%
Avoiding chaos in clusters with fencing
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© kobra78, Fotolia.com
visit the ClusterLabs website [3]. Infos Details of STONITH with SBD: http://www.linux-ha.org/wiki/SBD_Fencing The meatware STONITH plugin: http://hg.linux-ha.org/glue/file/0a08a469fdc8/doc
84%
An IT nomad's daily diary
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© Kateryna Pruchkovska, 123RF.com
magazine [3]. In other words, the many Cobbler system records are really the biggest problem. Just to jog your memory: Using system records, Cobbler can create an individual PXE configuration file for each
84%
Monitoring your cluster with a home-grown OCF agent
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Aleksey Mnogosmyslov, 123RF.com
on hand; it is available on the web [2]. You will also find it useful to have the current version 1.0.2 [3] of the OCF Resource Agent Developer's Guide , created by Hastexo's Florian Haas. The Developer
84%
Single sign-on with SSSD, LDAP, and Kerberos
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
Anja Kaiser; Fotolia
posixaccount /etc/dirsrv/schema/10rfc2307.ldif objectClasses: ( 1.3.6.1.1.1.2.0 NAME 'posixAccount' DESC 'Standard LDAP objectclass' SUP top AUXILIARY MUST ( cn $ uid $ uidNumber $ gidNumber $ home
84%
Clustering with OpenAIS and Corosync
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
brunoilfo, 123RF.com
ID. Version 3.0 of the cluster suite (in RHEL 6 and Fedora 10 or later), replaces OpenAIS with Corosync [3]. Viewed superficially, not too many changes are seen between the two cluster managers ... 3
84%
A standard cloud computing API
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
= DeltaCloud.new(USER, PASSWORD, URL) 05 summary = Hash.new(0) 06 state = client.instances.inject({}) do |state, inst| 07 state[inst.id] = inst.state 08 summary[inst.state] += 1 09 state 10 end 11
84%
Using the Expect scripting environment
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Ivan Mikhaylov, 123RF.com
Connection 01 #!/usr/bin/expect 02 03 set host [lindex $argv 0] 04 set timeout 5 05 spawn /usr/bin/ssh aefrisch@$host 06 expect "(yes/no)? " { 07 send "yes\r" 08 } 09 expect "password:" 10 send
84%
Creating an SFTP jail
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Juan Manuel Ordonez, 123RF.com
_config 03 bash#> vi sshd_config 04 AllowTcpForwarding no 05 ClientAliveCountMax 3 06 ClientAliveInterval 0 07 Compression delayed 08 LoginGraceTime 60s 09 LogLevel DEBUG3 10 MaxAuthTries 2 ... 3
84%
The logging module in Python
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
© svl861, 123RF.com
. In Python 2.3, the logging module [3] was finally added to the standard library, so assuming you have Python in place, you have nothing to install. To use the module, import it at the start of a script, like
83%
With great PowerShell comes great responsibility
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© imagesource, 123RF.com
Shell 2.0, which I use here. Windows 8 and Windows Server 8 will use the new PowerShell 3.0, to be released soon. To begin, I introduce PowerShell information retrieval to you via the "Get" commands

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