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Getting Started on Linux

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

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Getting Started on Linux

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  1. Getting Started on Linux Marion TrompeterSenior Software Engineer, Informix Software

  2. 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

  3. 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

  4. Product Availability - Intel

  5. Product Availability - Intel

  6. 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

  7. 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)

  8. 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!

  9. 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

  10. 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

  11. 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>

  12. 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

  13. Installation Procedures

  14. 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

  15. 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..."

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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

  21. /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

  22. /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)

  23. 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!

  24. 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

  25. Building a Kernel • Configuration • make config command-line • make menuconfig menu-driven,hierarchical structure • make xconfig X Windows, hierarchical structure

  26. 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

  27. 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

  28. 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

  29. 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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