root@myhost1# vxdg deport DB_PRD
VxVM vxdg ERROR V-5-1-584 Disk group DB_PRD: Some volumes in the disk group are in use

but df doesn’t show up anything related with DG.

/dev/vx/dsk/DB_PRD/DBroot /BCV/DB vxfs noauto,_netdev 0 0
/dev/vx/dsk/DB_PRD/DB-ora /BCV/DB/ora vxfs noauto,_netdev 0 0
/dev/vx/dsk/DBarc_PRD/DB-ora-archivelog01 /BCV/DB/ora/archivelog01 vxfs noauto,_netdev 0 0

root@myhost1# mount /BCV/DB
root@myhost1# mount /BCV/DB/ora
UX:vxfs mount.vxfs: ERROR: V-3-21300: cannot open “/BCV/DB/ora” for quotactl

root@myhost1#fuser -c /BCV/DB
Cannot stat file /proc/13919/fd/4: Input/output error
Cannot stat file /proc/13946/fd/5: Input/output error
root@myhost1#ps -ef|grep “13919|13946″
root 13919 1 0 Jan28 ? 00:00:00 bpbkar -r 1209600 -ru root -dt 0 -to 0 -clnt
root 13946 1 0 Jan28 ? 00:00:00 bpbkar -r 1209600 -ru root -dt 0 -to 0 -clnt
root@myhost1# kill -9 13919 13946

# succeed deport the dg now.
root@myhost1# vxdg deport DB_PRD
root@myhost1# vxdg -C import DB_PRD
root@myhost1# vxdg list
NAME STATE ID
localnbu enabled,cds 1245484407.6.myhost1
DB_PRD enabled,cds 1286892006.172.myhost2

root # vxdisk list EMC0_146
Device: EMC0_146
devicetag: EMC0_146
type: auto
flags: online error private autoconfig
errno: Device path not valid
Multipathing information:
numpaths: 2
c5t5006048449AE7F48d149s2 state=disabled
c6t5006048C49AE7F77d149s2 state=disabled

root # vxdisk path |grep EMC0_146
c5t5006048449AE7F48d138s2 EMC0_146 – – DISABLED
c6t5006048C49AE7F77d149s2 EMC0_146 – – DISABLED

root # vxdmpadm enable path=c5t5006048449AE7F48d149s2
root # vxdisk path |grep EMC0_146
c5t5006048449AE7F48d149s2 EMC0_146 – – ENABLED
c6t5006048C49AE7F77d149s2 EMC0_146 – – DISABLED
root # vxdmpadm enable path=c6t5006048C49AE7F77d149s2
root # vxdisk path |grep EMC0_146
c5t5006048449AE7F48d149s2 EMC0_146 – – ENABLED
c6t5006048C49AE7F77d149s2 EMC0_146 – – ENABLED

root # /etc/vx/bin/vxdisksetup -i EMC0_146
prtvtoc: /dev/vx/rdmp/EMC0_146: Unable to read Disk geometry errno = 0×6

# we need label it first.
root # format -d c6t5006048C49AE7F77d149
Searching for disks…done
format> l
Ready to label disk, continue? y

format> s
Saving new disk and partition definitions
Enter file name["./format.dat"]:

format> q

root # /etc/vx/bin/vxdisksetup -i EMC0_146
root # vxdisk list EMC0_146
Device: EMC0_146
devicetag: EMC0_146
type: auto
hostid:
disk: name= id=1327117862.145.yourhost
group: name= id=
info: format=cdsdisk,privoffset=256,pubslice=2,privslice=2
flags: online ready private autoconfig autoimport
pubpaths: block=/dev/vx/dmp/EMC0_146s2 char=/dev/vx/rdmp/EMC0_146s2
version: 3.1
iosize: min=512 (bytes) max=2048 (blocks)
public: slice=2 offset=2304 len=70703616 disk_offset=0
private: slice=2 offset=256 len=2048 disk_offset=0
update: time=1327117863 seqno=0.1
ssb: actual_seqno=0.0
headers: 0 240
configs: count=1 len=1280
logs: count=1 len=192
Defined regions:
config priv 000048-000239[000192]: copy=01 offset=000000 disabled
config priv 000256-001343[001088]: copy=01 offset=000192 disabled
log priv 001344-001535[000192]: copy=01 offset=000000 disabled
lockrgn priv 001536-001679[000144]: part=00 offset=000000
Multipathing information:
numpaths: 2
c5t5006048449AE7F48d149s2 state=enabled
c6t5006048C49AE7F77d149s2 state=enabled

on x86, you need edit grub and append -s on kernel line.

after login. mount /dev/dsk/cxtxdxsx /a

if you use zfs for /, then zfs import
zfs list
zfs set mountpoint=/a rpool/ROOT/solaris
zfs mount -f rpool/ROOT/solaris
then edit /etc/shadow
remove the password section, let it looks likes.
root::15356::::::

don’t forget to reset the mountpoint back
zfs set mountpoint=/ rpool/ROOT/solaris

reboot.

The following options are removed in MySQL 5.5. If you attempt to start mysqld with any of these options in MySQL 5.5, the server aborts with an unknown variable error.

–master-host
–master-user
–master-password
–master-port

Solution, comment the master- related variables.
Do following,
On Master:
mysql>GRANT REPLICATION SLAVE ON *.* TO ‘slave_user’@'%’ IDENTIFIED BY ‘‘; (Replace with a real password!)
mysql>FLUSH PRIVILEGES;
mysql>FLUSH TABLES WITH READ LOCK;
mysql>SHOW MASTER STATUS;
# get the DB dump.
mysql>UNLOCK TABLES;

On Slave:
# import the DB dump
mysql>stop slave;
mysql>CHANGE MASTER TO MASTER_HOST=’prod_master’, MASTER_USER=’slave_user’, MASTER_PASSWORD=’‘, MASTER_LOG_FILE=’mysql-bin.0xx‘, MASTER_LOG_POS=33421;
mysql>start slave;

Ref: http://dev.mysql.com/doc/refman/5.5/en/replication-options-slave.html

Actually the same configuration works on other hosts.
On broken-host, debug info,
sudo: found:cn=UNIX-Team-root,ou=SUDOers,dc=abc,dc=com
sudo: ldap sudoUser netgroup ‘+unixadms’ … not

On working-host, debug info,
sudo: found:cn=UNIX-Team-root,ou=SUDOers,dc=abc,dc=com
sudo: ldap sudoUser netgroup ‘+unixadms’ … MATCH!

finally turned out domainname issue.
working-host:
$ domainname
abc.com

broken-host
$ domainname
(none)
Changed domainname using “domainname command”
# domainname abc.com

Then everything works fine.

Solution:
check the /var/adm/utmpx, maybe the file has been corrupted
myhost1:~ root # cd /var/adm
myhost1:adm root # vi u1.log
# paste the following content.
system boot 0 2 0000 0000 1315335814 0 0 0 Tue Sep 6 20:03:34 2011
run-level 3 0 1 0063 0123 1315335839 0 0 0 Tue Sep 6 20:03:59 2011
rc2 s2 1262 8 0000 0000 1315335885 0 0 0 Tue Sep 6 20:04:45 2011
rc3 s3 3938 8 0000 0000 1315335915 0 0 0 Tue Sep 6 20:05:15 2011

myhost1:adm root # cat u1.log
system boot 0 2 0000 0000 1315335814 0 0 0 Tue Sep 6 20:03:34 2011
run-level 3 0 1 0063 0123 1315335839 0 0 0 Tue Sep 6 20:03:59 2011
rc2 s2 1262 8 0000 0000 1315335885 0 0 0 Tue Sep 6 20:04:45 2011
rc3 s3 3938 8 0000 0000 1315335915 0 0 0 Tue Sep 6 20:05:15 2011
myhost1:adm root # /usr/lib/acct/fwtmp -ic < u1.log > /var/adm/utmpx
myhost1:adm root # who -r
. run-level 3 Sep 6 20:03 3 0 S

If paste to the u1.log won’t work properly. you can find another normal server. run
/usr/sbin/acct/fwtmp < /var/adm/utmpx > u1.log
and scp to the broken host.

Details on wtmpx.
fwtmp manipulates connect-time accounting records by reading binary records in wtmp format from standard input, converting them to formatted ASCII records. The ASCII version is useful when it is necessary to edit bad records.

# fwtmp [-ic]

where :

-ic : denotes that input is in ASCII form, and output is to be written in binary form.

Example to convert a binary record in wtmp format to an ASCII record called dummy.file, enter:

#fwtmp < /var/adm/wtmp > dummy.file

Example to convert an ASCII dummy.file to a binary file in wtmp format called /var/adm/wtmp, enter the fwtmp command with the -ic switch:

#fwtmp -ic < ascii.file > /var/adm/wtmp

Note: Depending on your flavour of Unix, the file may be called wtmpx or wtmp.

fwtmp also can be used to modify utmpx or utmp.

wget ftp://ftp.sunfreeware.com/pub/freeware/sparc/9/lftp-4.0.10-sol9-sparc-local.gz
wget ftp://ftp.sunfreeware.com/pub/freeware/sparc/9/readline-5.2-sol9-sparc-local.gz
wget ftp://ftp.sunfreeware.com/pub/freeware/sparc/9/libgcrypt-1.4.6-sol9-sparc-local.gz

wget ftp://ftp.sunfreeware.com/pub/freeware/sparc/9/libgpgerror-1.10-sol9-sparc-local.gz
wget http://sourceforge.net/apps/trac/gar/export/13001/csw/mgar/pkg/gnutls/branches/libgnutls13/files/gnutls-2.0.4-2009.01.22-sparc-libgnutls.so.13.9.1
cp gnutls-2.0.4-2009.01.22-sparc-libgnutls.so.13.9.1 /usr/local/lib/
ln -s gnutls-2.0.4-2009.01.22-sparc-libgnutls.so.13.9.1 libgnutls.so.13
pkgadd -d ./libgpgerror-1.10-sol9-sparc-local
pkgadd -d ./libgcrypt-1.4.6-sol9-sparc-local
pkgadd -d ./readline-5.2-sol9-sparc-local
pkgadd -d ./lftp-4.0.10-sol9-sparc-local

ldd /usr/local/bin/lftp
libexpat.so.1 => /usr/local/lib/libexpat.so.1
libgnutls.so.13 => /usr/local/lib/libgnutls.so.13

rpm -Uvh http://download.powerstack.org/powerstack-release-0-2.noarch.rpm
yum update php

From http://wiki.powerstack.org/PowerStack

It’s a very cool project, thanks for the developers.

Crontab issue:
pam_access(crond:account): access denied
crond[9985]: CRON (someuser) ERROR: failed to open PAM security session: Success
crond[9985]: CRON (someuser) ERROR: cannot set security context

* if has /etc/cron.allow – add users to this file
* /etc/security/access.conf – comment out

# All other users should be denied to get access from all sources.
#- : ALL : ALL
# -:ALL EXCEPT root:LOCAL

The maintenance window is also necessary because the server needs a reboot to the new kernel goes into production.

If the server has some third-party module into the kernel, the inclusion of these modules should also be made for the new kernel, otherwise the new kernel will not contain all the modules required and this can cause problems at boot process and devices’ recognition, such as storage, drive controllers, and others…

If the server faces any problems with the new kernel after rebooting, it is possible reboot the server using the old kernel as a workaround.

It is highly recommended perform a backup of the configuration files of the most critical services, because if a problem occurs with the updated version of the packages, you can a package downgrade using the command “yum downgrade ” and restore the saved configurations.

If your server has any third-party applications installed, such as Oracle, will be necessary check with software vendor if application is certified for the version that system will assumes after updated.

It is recommended that you apply all changes and updates in a test environment first for approval before perform the upgrade in production servers, so you can avoid future problems.