Transcript No Slide Title

Getting Started on Linux
Marion Trompeter
Senior Software Engineer,
Informix Software
Where to Obtain Informix Products
• Download through Intraware
http://www.intraware.com
• Request a CD from Jones Business Systems,Inc
http://www.jbsi.com
• In the UK, purchase directly from Linux IT
http://www.linuxit.com
• Call Informix at 1-800-331-1763, or your local
Informix office
http://www.informix.com/informix/contact
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Compatibility Statement
• Definition of the OS version
• Kernel version (I.e. kernel 2.2.12)
• glibc version (I.e. glibc 2.1.2)
• Informix is not supporting any specific
distributor, but certain combinations of kernel
and glibc versions
• With each major version change of the kernel or
glibc, Informix products will be re-certified for
these versions
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Product Availability - Intel
Product
Version kernel glibc
IDS-LE
7.30
IDS.2000/Foundation.2000
9.20
9.21
7.24
7.24
C-ISAM
SE
2.0.36
2.2.5
2.2.5
2.2.12
2.2.5
2.2.5
2.0.7
2.1.1
2.1.1
2.1.2
2.1.1
2.1.1
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Product Availability - Intel
Product
CSDK
ESQL/Cobol
Web Datablade
Excalibur Text
Geodetic
TimeSeries
MAXConnext
Tools (4GL, ISQL)
D4GL
ISA
Version kernel glibc
2.40
7.25
4.10
1.30
3.00
3.30
1.00
7.30
3.01
1.20
2.2.5
2.2.5
2.2.5
2.2.5
2.2.5
2.2.5
2.2.5
2.2.5
2.2.5
2.2.5
2.1.1
2.1.1
2.1.1
2.1.1
2.1.1
2.1.1
2.1.1
2.1.1
2.1.1
2.1.1
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Product Availability - Others
• Linux AXP (Alpha processors)
• IDS.2000 9.21
• kernel 2.2.13
• glibc 2.1.2
• CSDK 2.50
• kernel 2.2.13
• glibc 2.1.2
• ISA 1.20
• kernel 2.2.13
• glibc 2.1.2
• Linux for S390
• C-ISAM 7.24
• kernel 2.2.16
• glibc 2.1.3
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Unsupported Features 7.30
• High-End Enterprise Features:
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Optical
Enterprise Replication (ER)
Back up and restore utility (ON-Bar)
Informix Storage Manager (ISM)
Parallel load utility (pload, ipload)
Communication Support Modules (CSM)
Online Simple Network Management Protocol (onsnmp)
High-Availability Data Replication (HDR)
Performance metrics monitor (Onperf)
Back up and restore at server granularity level (Onarchive)
• Other Features:
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Very Large Memory (VLM; for 64-bit support)
Secure auditing (OS C2 auditing)
Pinning of a CPU VP process (Affinity)
Raw Device Support
KAIO
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Unsupported Features 9.21
• High-End Enterprise Features:
• Online Simple Network Management Protocol (onsnmp)
• Back up and restore at server granularity level (Onarchive)
• Other Features:
• Secure auditing (OS C2 auditing)
• Pinning of a CPU VP process (Affinity)
• KAIO
Support of Processor Affinity and KAIO Are
Planned for Kernel 2.4!
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Determining the OS Version
• Kernel version
• uname -r
2.2.14
• glibc version
• ls -l /lib/libc.so*
• lrwxrwxrwx
1 root root … /lib/libc.so.6 -> libc-2.1.2.so
• rpm -qa | grep libc
• glibc-2.1.2-11
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Distribution Examples
• Caldera 2.4
• kernel 2.2.14
• glibc 2.1.2
• RedHat 7
• kernel 2.2.16
• glibc 2.2 (2.1.92)
• Suse 7
• kernel 2.2.16
• glibc 2.1.3
• TurboLinux 6.0
• kernel 2.2.14
• glibc 2.1.2
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Installing Foundation.2000
• Setting the environment
• INFORMIXDIR
• default: /opt/informix
• Installation command
• rpm -I <filename>
• Installation to different $INFORMIXDIR
• rpm -I --relocate /opt/informix=$INFORMIXDIR \
<filename>
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Limitations of RPM
• Each product should be installed only once
per machine
• Parallel test and production systems
• Different products installed in the same
directory can only have each file name once
• CSDK on top of database server
• To use graphical tools, user interaction and
environment variables should be avoided
• $INFORMIXDIR
• Licensing
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Installation Procedures
Product
C-ISAM
SE
IDS-LE 7.30
CSDK/Connect
IDS.2000
IIF.2000
DataBlades
ISA
ISQL
4GL
D4GL
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Installation Method
Copying files into
destination directory
using RPM.
Installation script
needs to be run
afterwards.
Complete installation
with RPM.
$INFORMIXDIR
needs to be set prior
to installation.
‘Classic’ installation,
using cpio or tar and
installation script.
Same on all
platforms.
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Installation FAQ’s
• rpm -i csdk240uc1.rpm returns
/opt/informix/bin/chkenv conflicts with file from
IIF-9.20.UC1-1...
• The error is due to the RPM attempting to replace
the existing files with different checksum.
• Use --replacefiles or -- force option
• rpm -i csdk230uc1.rpm returns error:
failed dependencies:
libifgls.so is needed by iconn-2.30.UC1-1
libifglx.so is needed by iconn-2.30.UC1-1
• Use --nodeps option
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Installation FAQ’s
• Message during installation
"To complete the installation of Informix
Dynamic Server 2000, run
RUN_AS_ROOT.server as root.”
• Disregard the message. Installation continues
automatically. Later message is indicating this:
"Performing root portion of installation of Informix
Dynamic Server 2000..."
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Setting Up Raw Devices
• Create a partition
• fdisk
• Disk Druid (RedHat)
• YaST/YaST2
• Partition type 83 (Linux native)
• Not referenced in fstab, no filesystem
• Bind a raw device to a block device using the
command “raw”
• raw /dev/raw/raw1 /dev/sda10
• Binding will be lost with next re-boot
• add command to startup scripts (/etc/rc.d)
• Change owner to informix.informix
• Change permissions to 660
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Krakatoa Setup - 9.21
• Bundled JRE 1.2.2 package is available under
$INFORMIXDIR/extend/krakatoa/jre to be used
with J/Foundation
• setenv JVPJAVAHOME
$INFORMIXDIR/extend/krakatoa/jre
• To get the JRE shared libraries loaded properly:
• 1. add the following lines at the end of
/etc/ld.so.conf
<$INFORMIXDIR>/extend/krakatoa/jre/lib/i386
<$INFORMIXDIR>/extend/krakatoa/jre/lib/i386/native_threads
<$INFORMIXDIR>/extend/krakatoa/jre/lib/i386/classic
• 2. run ldconfig as root
• # ldconfig
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Krakatoa Setup - 9.21
• Server onconfig Settings for J/Foundation
• VPCLASS
jvp,num=number
where 'number' is the number of Java Virtual Processors
• JVPHOME
<jvphome>
where <jvphome> is $INFORMIXDIR/extend/krakatoa
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JVPLOGFILE <jvphome>/jvp.log
JVPPROPFILE <jvphome>/.jvpprops
JVPJAVAVM hpi:jvm:java:net:zip:jpeg
JDKVERSION 1.2
JVMTHREAD native
JVPJAVAHOME <jvphome>/jre
JVPJAVALIB /lib/i386
JVPCLASSPATH
<jvphome>/krakatoa.jar:<jvphome>/jdbc.jar
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Kernel Parameters
• Files
• NR_OPEN
number of open files per process
• NR_FILE
number of open files system wide
• Semaphores
• SEMMNI
number of semaphore identifiers in the kernel
• SEMMSL
maximum number of semaphores per identifier list
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Kernel Parameters
• Shared Memory
• SHMALL
maximum total shared memory system wide
• SHMMNI
maximum number of shared memory segments system wide
• SHMSEG
number of attached shared memory segments per process
• SHMMAX
maximum shared memory segment size
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/proc
• Pseudo file system
• internal data structures
• change kernel parameters at run time
• /proc/sys - tunable kernel parameters
• For permanent changes, parameter changes
must be added to the system startup scripts
/etc/rc.d
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/proc/sys
• Files
• /proc/sys/fs/file-max
maximum number of file handles
• /proc/sys/fs/file-nr
number of allocated file handles, number of used file
handles, and maximum number of file handles
• Memory
• /proc/sys/kernel/shmall
maximum shared memory system wide (pages)
• /proc/sys/kernel/shmmax
maximum shared memory segment size (bytes)
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Kernel Parameters
• Files
• /usr/src/linux/include/linux/limits.h
• OPEN_MAX
• NR_OPEN
• /usr/src/linux/include/linux/fs.h
• NR_OPEN
• NR_FILE
• /usr/src/linux/include/linux/posix_types.h
• __FD_SETSIZE
• /usr/include/linux
Review your kernel source before implementing changes kernel source differs between versions!
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Kernel Parameters
• Semaphores
• /usr/src/linux/include/linux/sem.h
• SEMMNI
• SEMMSL (<=512)
• Shared Memory
• /usr/src/linux/include/asm-i386/shmparam.h
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SHMALL
SHMMNI
SHMSEG
SHMMAX
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Building a Kernel
• Configuration
• make config
command-line
• make menuconfig
menu-driven,hierarchical structure
• make xconfig
X Windows, hierarchical structure
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Building a Kernel
• Compilation
• make dep
prepares dependencies
• make clean
removes old objects
• make bzImage
builds compressed image of the kernel
• make modules
builds device driver modules
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Building a Kernel
• Testing
• boot floppy
• fdformat /dev/fd0H1440
• make bzdisk
• /etc/lilo.conf - /sbin/lilo
• image = /boot/vmlinuz.new
• label = linux.new
• root = /dev/hda1
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Building a Kernel
• Installing
• Modules
• mv /lib/modules /lib/modules.sv
• make modules_install
• Kernel
• mv /vmlinuz /vmlinuz.sv
• make install
• Lilo
• add entry for saved kernel
• /sbin/lilo
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FAQ’s
• Which protocol are supported on Linux?
• Due to technical restrictions in Linux, the
protocols currently supported are
• Shared Memory - onipcshm
• Berkley Sockets - onsoctcp
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