UCS 2.4 - Univention

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10 Basic System Services 10.5 Network configuration 10.5.1 Network interfaces Network interfaces settings are stored in Univention Configuration Registry. They can be changed via Univention System Setup (see chapter 15.2.4), or stored directly in Univention Configuration Registry. For each interface there must be four properties stored in Univention Configuration Registry variables: • interfaces/ethX/address for the IP address which is to be linked to an interface. • interfaces/ethX/broadcast for the Broadcast address of the interface • interfaces/ethX/netmask for the subnet mask of the interface • interfaces/ethX/network for the network of the interface Besides the physical interfaces, additional virtual interfaces can also be defined in the form interfaces/ethX_Y/property. The default gateway is configured by the Univention Configuration Registry variable gateway. On mobile clients where UCS versions as of 2.3 are installed, Network Manager is used for the IP configuration. If a server is configured over DHCP, an address is configured in Univention Configuration Reg- istry which can be resorted to if the DHCP request should fail. The setting is specified by the Univention Configuration Registry variables interfaces/ethX/fallback/address and interfaces/ethX/fallback/netmask. Network and broadcast addresses can be specified using the Univention Configuration Registry variables interfaces/ethX/fallback/network and interfaces/ethX/fallback/broadcast. A gateway can be specified with gateway/fallback. If the Univention Configuration Registry variable networkmanager/dhcp/options/fallback is set to yes, options which are not set by the DHCP server are read out of the previously listed Univention Configuration Registry variables. 10.5.2 DNS servers One or more DNS servers can be configured for each system in the Univention Configuration Registry variables nameserver1, nameserver2 and nameserver3. For each configured network interface, the entry in the /etc/hosts can be configured through interfaces/ethX_Y/hosts. Information on the configuration of the name resolution through the /etc/hosts file can be found in Chapter 10.11.4. 10.5.3 Proxy configuration The majority of the command line tools which access web servers (e.g., wget, elinks or curl) check whether the environment variable http_proxy is set. If this is the case, the proxy server set in this variable is used automatically. 228
10.6 Logging of system messages and system status The Univention Configuration Registry variable proxy/http can also be used to activate the setting of this environment variable via an entry in /etc/profile. The proxy URL must be specified for this, e.g., http://192.168.1.100. The proxy port can be specified in the proxy URL using a colon, e.g., http://192.168.1.100:3128. If the proxy requires authentication for the accessing user, this can be provided in the form http://username:password@192.168.1.100. The environment variable is not adopted for sessions currently opened. A relogin is required for the change to be activated. The Univention tools for software updates also support operation via a proxy and query the Univention Configuration Registry variable . Individual domains can be excluded from use by the proxy by including them separated by commas in the Univention Configuration Registry variable proxy/no_proxy. Subdomains are taken into account; e.g. an exception for univention.de also applies for apt.univention.de. 10.6 Logging of system messages and system status 10.6.1 Log files All UCS-specific log files (e.g., for the listener/notifier replication) are stored in the /var/log/univention directory. Services log in their own standard log files: for example, Samba in /var/log/samba/log.smbd and /var/log/samba/log.nmbd. The log files are managed by Logrotate. It ensures that log files are named in series in intervals (can be configured in weeks using the Univention Configuration Registry variable log/rotate/weeks, with the default setting being 12) and older log files are then deleted. For example, the current log file for the Univention Directory Listener is found in the listener.log file; the one for the previous week in listener.log.1, etc. The Univention Configuration Registry variable log/rotate/univention/compress is used to config- ure whether the older log files are additionally zipped with Gzip. 10.6.2 Logging the system status univention-system-stats (available as of UCS 2.4-1) can be used to document the current system status in the /var/log/univention/system-stats.log file. The following values are logged: • The free disk space on the system partitions (df -lhT) • The current process list (ps auxf) • Two top lists of the current processes and system load (top -b -n2) • The current free system memory (free) • The time elapsed since the system was started (uptime) • Temperature, fan and voltage indices from LM sensors (sensors) 229
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Univention Corporate Server Manual
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Contents 1 Introduction 11 1.1 What
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Contents 5.3.12 Reboot . . . . . .
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Contents 10.7.2 Hardware drivers /
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Contents 14.11Including additional
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1 Introduction Contents 1.1 What is
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1.3 Further documentation selective
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2 Domain concept Contents 2.1 Intro
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2.2 UCS system roles The DC backup
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2.4 Joining domains 2.4 Joining dom
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2.4.2 How to join domains with Wind
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2.4 Joining domains If the computer
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3 Installation Contents 3.1 Introdu
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continued. 3.2 Text-based Installat
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g) Base system Attention: 3.2 Text-
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Figure 3.3: Partitioning hard drive
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3.2 Text-based Installation as the
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Figure 3.5: Selection of components
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17. System settings 3.2 Text-based
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3.4 Installing and Renewing Licence
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4 Univention Directory Manager Cont
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Figure 4.1: Unsecured start page 4.
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Figure 4.3: Automatic log-out after
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4.3 Univention Directory Manager Wi
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last names of the users, a column w
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4.4 Navigation in LDAP By clicking
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4.5 Univention Directory Manager mo
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’User account’ tab Account expi
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Attention: 4.5 Univention Directory
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Further information can be found in
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’Groups’ tab 4.5 Univention Dir
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the user is disconnected after auth
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Mail address 4.5 Univention Directo
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DNS Entry 4.5 Univention Directory
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’General’ tab Name (*) 4.5 Univ
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Reverse zone for DNS entry 4.5 Univ
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’Deployment’ tab 4.5 Univention
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Browseable 4.5 Univention Directory
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Valid users 4.5 Univention Director
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Clients can send a lock request wit
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Subtree checking 4.5 Univention Dir
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Disconnect Time 4.5 Univention Dire
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Manufacturer 4.5 Univention Directo
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’Samba’ tab 4.5 Univention Dire
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’Alias’ tab Canonical name (*)
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server. Attention: 4.5 Univention D
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• Lease time • NetBIOS • Rout
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Last address 4.5 Univention Directo
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4.5.10.5 DHCP host 4.5 Univention D
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4.5.11.1 Adding a policy 4.5 Univen
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Declines 4.5 Univention Directory M
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’[DHCP NetBIOS]’ tab NetBIOS na
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RAM on the graphics adapter in kb 4
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System shutdown 4.5 Univention Dire
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’[Print quota]’ tab Attention:
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The DNs of the predefined container
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’General’ tab Name (*) The name
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Tab name 4.5 Univention Directory M
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Displayed attributes 4.5 Univention
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Data type Syntax 4.5 Univention Dir
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• Wizards 4.6 Policy-controlled L
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4.6 Policy-controlled Layouts for t
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4.6 Policy-controlled Layouts for t
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5 Univention Management Console Con
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Figure 5.1: Login mask of Univentio
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5.3.2 Kernel modules 5.3 Standard m
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Figure 5.4: Univention Configuratio
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Figure 5.6: List of partitions 5.3
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5.3.10 Joining a domain Figure 5.8:
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5.3.13 Online update Figure 5.10: R
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Figure 5.13: Online update: compone
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6 Univention Virtual Machine Manage
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6.3 Managing virtual machines with
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6.3.2 Modifying virtual machines Fi
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6.3.2.2 Operations (Starting/stoppi
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Page 183 and 184: tions. 7.4 Configuration of LDAP AC
Page 185 and 186: - Using a concrete DN via dn.base,
Page 187 and 188: 8 Services for Windows Contents 8.1
Page 189 and 190: 8.2.3 Print server 8.3 Building Sam
Page 191 and 192: 8.4 Extended Configuration When set
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Page 199 and 200: 8.4.5.4 Profile directory 8.4 Exten
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Page 203 and 204: 9 Desktop systems Contents 9.1 Intr
Page 205 and 206: 9.2.3 Mobile clients 9.3 Managing d
Page 207 and 208: 9.3.4 NX 9.4 VNC desktop sharing Li
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Page 217 and 218: 9.7.1 Creating and modifying global
Page 219 and 220: Figure 9.1: Univention Directory Ma
Page 221 and 222: 10 Basic System Services Contents 1
Page 223 and 224: 10.3 Packet filter with Univention
Page 225 and 226: 10.3.5 Testing Univention Firewall
Page 227: sudo tool for running users with el
Page 231 and 232: 10.8 GRUB boot manager The GRUB boo
Page 233 and 234: 10.9.3 Defining cron jobs in Univen
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Page 239 and 240: 11.2 UCS updates system version whi
Page 241 and 242: 11.3.1 Assigning repository servers
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Page 247 and 248: 11.3.6.4 Information about installe
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Page 251 and 252: univention-repository-merge --dest
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Page 255 and 256: 12 Mail Contents 12.1 Introduction
Page 257 and 258: 12.3 Setting up the mail server To
Page 259 and 260: 12.3 Setting up the mail server ent
Page 261 and 262: 12.5 Virus filters can be changed i
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Page 265 and 266: 13 Print services Contents 13.1 Int
Page 267 and 268: 13.2.3 Windows systems as print ser
Page 269 and 270: 13.3 Configuring printer shares Onc
Page 271 and 272: 13.5 Print quota 13.5 Print quota T
Page 273 and 274: 13.5 Print quota entry is confirmed
Page 275 and 276: 13.5 Print quota -G -pgroups pg1[,p
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sshd/permitroot: yes sshd/xforwardi
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14.5 Creating new Univention Config
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14.8 Regeneration of configuration
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14.10 Univention Configuration Regi
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closed with the string @!@. 14.12 I
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15 Univention System Setup Contents
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Figure 15.2: Basic settings in Univ
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Figure 15.4: Language settings in U
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15.2 Univention System Setup module
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15.2.6 Time zone Time zones can be
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15.5 Changing machine passwords/SSL
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16 Frequently asked questions Conte
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16.3 How does a user change his pas
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16.7 Thin clients experience log-in
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16.12 Avoiding double log-ins on Wi
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Bibliography [1] Univention. Overvi
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[26] Univention. Web proxies with U
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UCS 2.4 - Univention

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