getting started on linux

Getting Started on LinuxGetting Started on LinuxMarion Trompeter

Senior Software Engineer,Informix Software

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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 glibcIDS-LE 7.30 2.0.36 2.0.7

2.2.5 2.1.1IDS.2000/Foundation.2000 9.20 2.2.5 2.1.1

9.21 2.2.12 2.1.2C-ISAM 7.24 2.2.5 2.1.1SE 7.24 2.2.5 2.1.1

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Product Availability - Intel

Product Version kernel glibcCSDK 2.40 2.2.5 2.1.1ESQL/Cobol 7.25 2.2.5 2.1.1Web Datablade 4.10 2.2.5 2.1.1Excalibur Text 1.30 2.2.5 2.1.1Geodetic 3.00 2.2.5 2.1.1TimeSeries 3.30 2.2.5 2.1.1MAXConnext 1.00 2.2.5 2.1.1Tools (4GL, ISQL) 7.30 2.2.5 2.1.1D4GL 3.01 2.2.5 2.1.1ISA 1.20 2.2.5 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:• 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: • Very Large Memory (VLM; for 64-bit support) • Secure auditing (OS C2 auditing) • Pinning of a CPU VP process (Affinity) • Raw Device Support • KAIO• Disabling priority aging of CPU VP’s (no aging)

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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 ProceduresProduct Installation MethodC-ISAMSEIDS-LE 7.30

Copying files intodestination directoryusing RPM.Installation scriptneeds to be runafterwards.

CSDK/ConnectIDS.2000IIF.2000DataBlades

Complete installationwith RPM.$INFORMIXDIRneeds to be set priorto installation.

ISAISQL4GLD4GL

‘Classic’ installation,using cpio or tar andinstallation script.Same on allplatforms.

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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.UC1-1libifglx.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• 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• 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