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49%
Monitoring your cluster with a home-grown OCF agent
30.11.2025
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© Aleksey Mnogosmyslov, 123RF.com
_RESKEY_user doesn't exist" 20 return $OCF_ERR_INSTALLED 21 fi 22 23 getent group $OCF_RESKEY_group >/dev/null 2>&1 24 rc=$? 25 if [ $rc -ne 0 ]; then 26 ocf_log err "Group $OCF
48%
High availability clustering on a budget with KVM
30.11.2025
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Yulia Saponova, 123RF.com
for the configuration step: # pvcreate /dev/sdb1 # vgcreate vg_cluster /dev/sdb1 # lvcreate -n lv_vm1 -L 50G vg_cluster # lvcreate -n lv_vm2 -L 50G vg_cluster The first command deposits the required LVM signature
48%
Using the Expect scripting environment
30.11.2025
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© Ivan Mikhaylov, 123RF.com
} 19 20 -re "($|%|>) " { interact } 21 22 timeout { 23 send_tty "No response from $host\n" 24 exit 25 } 26 } The script begins as usual by saving its arguments into variables
48%
Galera Cluster for MySQL
30.11.2025
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© Noel Powell, fotolia.com
MySQL-shared-compat-5.5.22-2.el6.x86_64.rpm rpm -i MySQL-client-5.5.22-1.el6.x86_64.rpm With CentOS 6, the following additional package is necessary: yum install openssl098e.x86_64 The easiest way
48%
Monitor your nodes with collectl
30.11.2025
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© nobeastsofierce, 123RF.com
m Memory n Networks s Sockets t TCP x Interconnect y Slabs Table 2 lists the aspects that can be measured ... 9
48%
Targeted defense against brute force attacks
30.11.2025
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Andrii IURLOV, 123RF.com
-N sshguard The second command handles IPv6 packets. The next step is to extend the input chain so that network traffic is routed through the sshguard chain (Figure 2): sudo iptables -A INPUT -j
48%
Configuring the JBoss application server
30.11.2025
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HONGQI ZHANG, 123RF.com
example, Mar 25, 2011, PrivateKeyEntry, 33 Certificate fingerprint (MD5): AC:D5:CB:5C:13:9D:EF:F2:85:6B:AB:89:49:F8:48:3A Finally, to enable the web connector's HTTPS port, you need to add
48%
Warding off the rise of VoIP spam
30.11.2025
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Izaokas Sapiro, 123RF.com
. Listing 1 A SIP Request 01 INVITE sip:bob@tuwien.ac.at SIP/2.0 02 Via: SIP/2.0/UDP myhost.myprovider.de;branch=z9hG4bK776asdhds 03 ... 04 To: Bob 05 ... 06 From: Alice
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An IT nomad's diary
30.11.2025
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© Jasmin Merdan, 123RF.com
idea to choose an intuitive name. Listing 2 shows an example. Listing 2 Your Own Domain in OpenShift 01 # rhc-create-domain -n tuxgeek -l tscherf@gmail.com 02 Password: 03 Generating
48%
Monitoring network computers with the Icinga Nagios fork
30.11.2025
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© Alterfalter, 123RF.com
young project that was forked from Nagios [2] because of disagreements regarding the pace and direction of development. Icinga delivers improved database connectors (for MySQL, Oracle, and Postgre

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