Unix Administration

Do you have problems mounting Oracle cd? or perhaps a Windows burned one? There is the minimal needed steps to mount a RickRidge CD on HP-UX 11i and how to export it to other machine: In the system where you've the CD do the next: 0.- mysystem:/#mkdir -p /mnt/pfs_cdrom (use your own) 1.- mysystem:/#nohup /usr/sbin/pfs_mountd & 2.- mysystem:/#nohup /usr/sbin/pfsd & 3.- Add the filesystem to /etc/pfs_fstab: Sample: /dev/dsk/cXtYdZ /mnt/pfs_cdrom pfs-rrip xlat=unix 0 3.1.- As is not usual mount Rock Ridge CD i prefer do it manually and not in pfs_fstab 4.- If you want export to other system perform steps 5 & 6 if not, go to 7. 5.- Put the rigth entry to your filesystem in the /etc/pfs_exports (man pfs_exports(5)) 6.- mysystem:/#pfs_exportfs -av 7.- mysystem:/#pfs_mount /mnt/pfs_cdrom Now is the moment to mount in our remote system, so you must perform a few steps: 0.- remotesystem:/#mkdir -p /mnt/pfs_cdrom (use your own) 1.- remotesystem:/#nohup /usr/sbin/pfs_mountd...

Do you want timestamp or ip-sign every .sh_history entry ?? Try this... simply fantastic....: trap 'date "+# %c" | read -s' debug or... trap 'who am i -R | read -s' debug ...you can try any other command you imagine to sign your history

If you are doing something like... vparcreate -p <name> / -a cpu::<x> / -a cpu:::<x>:<x> / -a cpu:0.10 -a cpu:<xx.yy> / -a mem::<nnnn> / -a io:<n.n.n...> / -a io:<n.n.n...> / -a io:<n.n.n...> -a io:<n.n.n...>:boot ...and you get an error similar to... [MON] Booting Kernel file is not relocatable File address is 0x0000000000020000 and memory address is 0x0000000004000000 Error reading program segments Failed to load (n.n.n.n.....)/stand/vmunix ...when you're trying to install S.O. cloning another machine from Ignite, in my own experience is because the originar server copied with Ignite is not a vpar system, the problem is simply that the original soft doesn't have vpar software installed or the one installed is a previous version, so in order to load the O.S. you must: -Create a depot with your os and vpar soft... make_depots -r <version ??B.11.11??> -s <source> (/dev/cdrom) make_depots -r <version...

To use async I/O with your Oracle, Sybase ... etc ... a) From the SAM Kernel configuration menu, choose Drivers and set the Pending State for asyncdisk to In. b) From the Actions Menu rebuild the Kernel c) At the Unix Prompt , execute the following statements as 'root' # insf you must have in your /dev crw-rw-rw- 1 bin bin 101 0x000000 Jan 23 12:41 /dev/async crw-rw-rw- 1 bin bin 101 0x000000 Jan 23 12:41 /dev/asyncdsk if u don't have try: #insf -e ...simple not?? Another way is doing manually... not dificult... supose you are doing it for oracle: 1. cd /stand/build 2. /usr/lbin/sysadm/system_prep -s system 3. vi /stand/build/system - add the following 2 lines: asyncdsk & asyncdsk_included 4. mk_kernel -s /stand/build/system 5. cp /stand/system /stand/system.prev 6. cp /stand/build/system /stand 7. kmupdate /stand/build/vmunix_test 8. cd / 9. shutdown -r -y now 10. after the system is reboot.. 11. Use sam to change the value of the param...

Many times we get error like VXVM not started in Solaris 10. To correct this problem, follow to remove the below file.  rm /etc/vx/reconfig.d/state.d/install-db and reboot the system. VXVM should start now. Many times vxconfigd is not started manytimes. bash-3.00# ps -ef|grep vx     root   748     1   0 20:30:19 ?           0:05 /sbin/vxesd      root   626     1   0 20:30:13 ?           0:02 vxconfigd -m disable It does not bring any disk in OS. bash-3.00# vxdisk list DEVICE       TYPE            DISK         GROUP        STATUS bash-3.00# vxdg list NAME      ...

After a routine reboot the system, encountered the problem of rebooting the server again and again. There was problem of missing bootblk on the system. system had 2 mirrored disk having metadevices. That was causing to reboot the system again and again . The error was as below: SunOS Release 5.9 Version Generic_118558-28 64-bit Copyright 1983-2003 Sun Microsystems, Inc.  All rights reserved. Use is subject to license terms. Cannot mount root on /pseudo/md@0:0,0,blk fstype ufs panic[cpu0]/thread=140a000: vfs_mountroot: cannot mount root 0000000001409970 genunix:vfs_mountroot+70 (0, 0, 0, 200, 14a8270, 0) %l0-3: 000000000149bc00 000000000149bc00 0000000000002000 00000000014e5b00 %l4-7: 00000000014eb800 0000000001422568 000000000149c400 000000000149f400 0000000001409a20 genunix:main+90 (1409ba0, f000d348, 1409ec0, 399604, 2000, 500) %l0-3: 0000000000000001 000000000140a000 0000000001423728 0000000000000000 %l4-7: 0000000078002000 000000000039c000 00000000014fdb18 0...

Faced a surprising problem when not able to ping with the hostname only. From backup server all host servers should be able to ping to enable its backup. Problem: Not able to ping with hostname Able to ping with FQDN/IP, nslookup works fine. But only ping and traceroute does not happen. Solution: There was changes in hosts distribution file, few hosts IPs were changed and reflected in backup server host file. But ping/traceroute does not pickup from /etc/hosts it takes . /etc/hosts has correct entry but after lot of head scratching found that /etc/inet/ipnodes has the older entry. and that was causing it. Looks pretty simple but consumed a lot of time:(