Built a server on VMware but could not connect to the network

Built a server on VMware but could not connect to the network

Issue: Server was on right VLAN and it has right ip address, subnet mask, gateway but still unable to connect to the network.
Solution,
Basically, it was not recognizing the Vlan. You have to remove it from there and reassign it to the NIC will resolve the issue. Sometimes a reboot will take care of it
Steps.
1. On Vsphere Summary page, Click on Edit Settings.
2. Click on a box next to Network Adapter
3. You will see list of VLANs
3. Select any other VLAN and click ok.
4. Go back to the setting and click the right VLAN and click ok.
5. Now, Server should be connected to the network.
6. If not reboot your machine. 

ext3 filessytem extention issue .

Task: Extend the filesystem by 20GB
OS: Redhat 5.10
Issue: Unable to extend the filesystem.
Solution: Had to unmount the filesystem and fsck the filesystem. Remount worked fine.

Error message recerived,
[root@aiglxapp22 ~]# resize2fs /dev/mapper/DB2-VG-UDB--USERTEMP
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/mapper/DB2-VG-UDB--USERTEMP is mounted on /udb/usertemp; on-line resizing requir
Performing an on-line resize of /dev/mapper/DB2-VG-UDB--USERTEMP to 10485760 (4k) blocks.
resize2fs: Inappropriate ioctl for device While trying to add group #160
brief tasks performed and solution.
[root@aiglxapp22 ~]# echo "- - -">/sys/class/scsi_host/host3/scan
[root@aiglxapp22 ~]# fdisk -l
[root@aiglxapp22 ~]# fdisk /dev/sdg
[root@aiglxapp22 ~]# pvcreate /dev/sdg1
[root@aiglxapp22 ~]# vgextend UDB-MISC /dev/sdg1
[root@aiglxapp22 ~]# lvextend  -L 20G /dev/mapper/DB2-VG-UDB--USERTEMP
[root@aiglxapp22 ~]# vgs
[root@aiglxapp22 ~]# resize2fs /dev/mapper/DB2-VG-UDB--USERTEMP
[root@aiglxapp22 ~]# df -h /udb/usertemp
[root@aiglxapp22 ~]# lvs
[root@aiglxapp22 ~]# resize2fs /dev/mapper/DB2-VG-UDB--USERTEMP
[root@aiglxapp22 ~]# cat /etc/redhat-release
[root@aiglxapp22 ~]# dmesg

fstab has ext4 instead ext3, changed but got the same error.
[root@aiglxapp22 ~]# vi /etc/fstab
[root@aiglxapp22 ~]# mount -o remount /udb/usertemp
[root@aiglxapp22 ~]# df -h /udb/usertemp
[root@aiglxapp22 ~]# resize2fs /dev/mapper/DB2-VG-UDB--USERTEMP
still same error
[root@aiglxapp22 ~]# fuser /udb/usertemp
[root@aiglxapp22 ~]# umount /udb/usertemp
[root@aiglxapp22 ~]# lvscan
[root@aiglxapp22 ~]# e2fsck /dev/mapper/DB2-VG-UDB--USERTEMP
[root@aiglxapp22 ~]# e2fsck -f /dev/mapper/DB2-VG-UDB--USERTEMP
[root@aiglxapp22 ~]# mount /udb/usertemp
[root@aiglxapp22 ~]# df -h /udb/usertemp
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/DB2-VG-UDB--USERTEMP
                       40G   16G   23G  41% /udb/usertemp

====================== Detail ===================
# dmesg
............
acpiphp: Slot [228] registered
acpiphp: Slot [229] registered
acpiphp: Slot [230] registered
acpiphp: Slot [231] registered
acpiphp: Slot [257] registered
acpiphp: Slot [258] registered
acpiphp: Slot [259] registered
acpiphp: Slot [260] registered
acpiphp: Slot [261] registered
acpiphp: Slot [262] registered
acpiphp: Slot [263] registered
e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
SCSI device sdb: 65011712 512-byte hdwr sectors (33286 MB)
sdb: Write Protect is off
sdb: Mode Sense: 61 00 00 00
sdb: cache data unavailable
sdb: assuming drive cache: write through
 sdb: sdb1
SCSI device sdb: 65011712 512-byte hdwr sectors (33286 MB)
sdb: Write Protect is off
sdb: Mode Sense: 61 00 00 00
sdb: cache data unavailable
sdb: assuming drive cache: write through
 sdb: sdb1
EXT4-fs (dm-5): mounted filesystem with ordered data mode
EXT4-fs (dm-4): mounted filesystem with ordered data mode
EXT4-fs (dm-6): mounted filesystem with ordered data mode
EXT4-fs (dm-7): mounted filesystem with ordered data mode
EXT4-fs (dm-8): mounted filesystem with ordered data mode
EXT4-fs (dm-9): mounted filesystem with ordered data mode
EXT4-fs (dm-10): mounted filesystem with ordered data mode
EXT4-fs (dm-11): mounted filesystem with ordered data mode
EXT4-fs (dm-12): mounted filesystem with ordered data mode
EXT4-fs (dm-13): VFS: Can't find ext4 filesystem
EXT4-fs (dm-13): mounted filesystem with ordered data mode
JBD: barrier-based sync failed on dm-13-8 - disabling barriers
JBD: barrier-based sync failed on dm-7-8 - disabling barriers
JBD: barrier-based sync failed on dm-11-8 - disabling barriers
JBD: barrier-based sync failed on dm-9-8 - disabling barriers
JBD: barrier-based sync failed on dm-12-8 - disabling barriers
JBD: barrier-based sync failed on dm-8-8 - disabling barriers
JBD: barrier-based sync failed on dm-4-8 - disabling barriers
JBD: barrier-based sync failed on dm-6-8 - disabling barriers
JBD: barrier-based sync failed on dm-5-8 - disabling barriers
JBD: barrier-based sync failed on dm-10-8 - disabling barriers
svc: unknown version (-1 for prog 100021 lockd)
svc: unknown version (-1 for prog 100021 lockd)
  Vendor: VMware    Model: Virtual disk      Rev: 1.0
  Type:   Direct-Access                      ANSI SCSI revision: 02
 target3:0:1: Beginning Domain Validation
 target3:0:1: Domain Validation skipping write tests
 target3:0:1: Ending Domain Validation
 target3:0:1: FAST-40 WIDE SCSI 80.0 MB/s ST (25 ns, offset 127)
SCSI device sdg: 41943040 512-byte hdwr sectors (21475 MB)
sdg: Write Protect is off
sdg: Mode Sense: 61 00 00 00
sdg: cache data unavailable
sdg: assuming drive cache: write through
SCSI device sdg: 41943040 512-byte hdwr sectors (21475 MB)
sdg: Write Protect is off
sdg: Mode Sense: 61 00 00 00
sdg: cache data unavailable
sdg: assuming drive cache: write through
 sdg: unknown partition table
sd 3:0:1:0: Attached scsi disk sdg
sd 3:0:1:0: Attached scsi generic sg6 type 0
SCSI device sdg: 41943040 512-byte hdwr sectors (21475 MB)
sdg: Write Protect is off
sdg: Mode Sense: 61 00 00 00
sdg: cache data unavailable
sdg: assuming drive cache: write through
 sdg: sdg1
SCSI device sdg: 41943040 512-byte hdwr sectors (21475 MB)
sdg: Write Protect is off
sdg: Mode Sense: 61 00 00 00
sdg: cache data unavailable
sdg: assuming drive cache: write through
 sdg: sdg1
[root@aiglxapp22 ~]# pwd
/root
[root@aiglxapp22 ~]# cat /etc/fstab
/dev/root_VG/ROOT        /                       ext3    defaults        1 1
/dev/root_VG/VAR         /var                    ext3    defaults        1 2
/dev/root_VG/TMP         /tmp                    ext3    defaults        1 2
LABEL=/boot             /boot                   ext3    defaults        1 2
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
/dev/root_VG/SWAP        swap                    swap    defaults        0 0
#############################################################################
#############################################################################
/dev/root_VG/OPT-IBM             /opt/ibm                ext4    defaults        1 2
/dev/UDB-MISC/UDB-XINSD         /udb/home/udbxinsd      ext4    defaults        1 2
/dev/root_VG/DBS-UDB            /dbs/udb               ext4    defaults        1 2
/dev/DATA/UDB-DATA              /udb/data               ext4    defaults        1 2
/dev/DATA2/UDB-DATA2            /udb/data2              ext4    defaults        1 2
/dev/LOG/UDB-LOG                /udb/log                ext4    defaults        1 2
/dev/UDB-MISC/UDB-USERTEMP      /udb/usertemp           ext4    defaults        1 2
/dev/UDB-MISC/UDB-SYSTEMP       /udb/systemp            ext4    defaults        1 2
/dev/UDB-MISC/UDB-DIAG          /udb/diag               ext4    defaults        1 2
/dev/UDB-MISC/UDB-SYSCAT        /udb/syscat             ext4    defaults        1 2
he3vtl106-bk:/backup/dbdump/udb /dbsdata/database_backup  nfs rw,bg,hard,nointr,rsize=32768,wsize=32768,nolock,tcp,timeo=600 0 0
[root@aiglxapp22 ~]# mkf
mkfifo       mkfs         mkfs.cramfs  mkfs.ext2    mkfs.ext3
[root@aiglxapp22 ~]# vi /etc/fstab
[root@aiglxapp22 ~]# resize2fs /dev/mapper/DB2-VG-UDB--USERTEMP
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/mapper/DB2-VG-UDB--USERTEMP is mounted on /udb/usertemp; on-line resizing requir
Performing an on-line resize of /dev/mapper/DB2-VG-UDB--USERTEMP to 10485760 (4k) blocks.
resize2fs: Inappropriate ioctl for device While trying to add group #160
[root@aiglxapp22 ~]# pwd
/root
[root@aiglxapp22 ~]# df -h /udb/usertemp
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/DB2-VG-UDB--USERTEMP
                       20G   16G  3.6G  82% /udb/usertemp
[root@aiglxapp22 ~]# mount -o remount /udb/usertemp
[root@aiglxapp22 ~]# df -h /udb/usertemp
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/DB2-VG-UDB--USERTEMP
                       20G   16G  3.6G  82% /udb/usertemp
[root@aiglxapp22 ~]# resize2fs /dev/mapper/DB2-VG-UDB--USERTEMP
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/mapper/DB2-VG-UDB--USERTEMP is mounted on /udb/usertemp; on-line resizing requir
Performing an on-line resize of /dev/mapper/DB2-VG-UDB--USERTEMP to 10485760 (4k) blocks.
resize2fs: Inappropriate ioctl for device While trying to add group #160
[root@aiglxapp22 ~]# lvscan
  ACTIVE            '/dev/UDB-MISC/UDB-USERTEMP' [40.00 GB] inherit
  ACTIVE            '/dev/UDB-MISC/UDB-SYSTEMP' [40.00 GB] inherit
  ACTIVE            '/dev/UDB-MISC/UDB-DIAG' [10.00 GB] inherit
  ACTIVE            '/dev/UDB-MISC/UDB-SYSCAT' [10.00 GB] inherit
  ACTIVE            '/dev/UDB-MISC/UDB-XINSD' [2.00 GB] inherit
  ACTIVE            '/dev/LOG/UDB-LOG' [20.00 GB] inherit
  ACTIVE            '/dev/DATA2/UDB-DATA2' [60.00 GB] inherit
  ACTIVE            '/dev/DATA/UDB-DATA' [60.00 GB] inherit
  ACTIVE            '/dev/root_VG/ROOT' [24.00 GB] inherit
  ACTIVE            '/dev/root_VG/VAR' [23.78 GB] inherit
  ACTIVE            '/dev/root_VG/TMP' [8.00 GB] inherit
  ACTIVE            '/dev/root_VG/SWAP' [8.00 GB] inherit
  ACTIVE            '/dev/root_VG/DBS-UDB' [25.00 GB] inherit
  ACTIVE            '/dev/root_VG/OPT-IBM' [5.00 GB] inherit
[root@aiglxapp22 ~]# pwd
/root
[root@aiglxapp22 ~]# fuser /udb/usertemp
[root@aiglxapp22 ~]# umount /udb/usertemp
[root@aiglxapp22 ~]# df -h /udb/usertemp
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/root_VG-ROOT
                       24G  3.0G   20G  14% /
[root@aiglxapp22 ~]# e2fsck /dev/mapper/DB2-VG-UDB--USERTEMP
e2fsck 1.39 (29-May-2006)
/dev/mapper/DB2-VG-UDB--USERTEMP: clean, 16/2621440 files, 4062330/5242880 blocks
[root@aiglxapp22 ~]# e2fsck /dev/mapper/DB2-VG-UDB--USERTEMP
e2fsck 1.39 (29-May-2006)
/dev/mapper/DB2-VG-UDB--USERTEMP: clean, 16/2621440 files, 4062330/5242880 blocks
[root@aiglxapp22 ~]# resize2fs /dev/mapper/DB2-VG-UDB--USERTEMP
resize2fs 1.39 (29-May-2006)
Please run 'e2fsck -f /dev/mapper/DB2-VG-UDB--USERTEMP' first.
[root@aiglxapp22 ~]# lvscan
  ACTIVE            '/dev/UDB-MISC/UDB-USERTEMP' [40.00 GB] inherit
  ACTIVE            '/dev/UDB-MISC/UDB-SYSTEMP' [40.00 GB] inherit
  ACTIVE            '/dev/UDB-MISC/UDB-DIAG' [10.00 GB] inherit
  ACTIVE            '/dev/UDB-MISC/UDB-SYSCAT' [10.00 GB] inherit
  ACTIVE            '/dev/UDB-MISC/UDB-XINSD' [2.00 GB] inherit
  ACTIVE            '/dev/LOG/UDB-LOG' [20.00 GB] inherit
  ACTIVE            '/dev/DATA2/UDB-DATA2' [60.00 GB] inherit
  ACTIVE            '/dev/DATA/UDB-DATA' [60.00 GB] inherit
  ACTIVE            '/dev/root_VG/ROOT' [24.00 GB] inherit
  ACTIVE            '/dev/root_VG/VAR' [23.78 GB] inherit
  ACTIVE            '/dev/root_VG/TMP' [8.00 GB] inherit
  ACTIVE            '/dev/root_VG/SWAP' [8.00 GB] inherit
  ACTIVE            '/dev/root_VG/DBS-UDB' [25.00 GB] inherit
  ACTIVE            '/dev/root_VG/OPT-IBM' [5.00 GB] inherit
[root@aiglxapp22 ~]# e2fsck -f /dev/mapper/DB2-VG-UDB--USERTEMP
e2fsck 1.39 (29-May-2006)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/mapper/DB2-VG-UDB--USERTEMP: 16/2621440 files (6.3% non-contiguous), 4062330/5242880 blocks
[root@aiglxapp22 ~]# e2fsck -f /dev/mapper/DB2-VG-UDB--USERTEMP
e2fsck 1.39 (29-May-2006)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/mapper/DB2-VG-UDB--USERTEMP: 16/2621440 files (6.3% non-contiguous), 4062330/5242880 blocks
[root@aiglxapp22 ~]# resize2fs /dev/mapper/DB2-VG-UDB--USERTEMP
resize2fs 1.39 (29-May-2006)
Resizing the filesystem on /dev/mapper/DB2-VG-UDB--USERTEMP to 10485760 (4k) blocks.
The filesystem on /dev/mapper/DB2-VG-UDB--USERTEMP is now 10485760 blocks long.
[root@aiglxapp22 ~]# lvscan
  ACTIVE            '/dev/UDB-MISC/UDB-USERTEMP' [40.00 GB] inherit
  ACTIVE            '/dev/UDB-MISC/UDB-SYSTEMP' [40.00 GB] inherit
  ACTIVE            '/dev/UDB-MISC/UDB-DIAG' [10.00 GB] inherit
  ACTIVE            '/dev/UDB-MISC/UDB-SYSCAT' [10.00 GB] inherit
  ACTIVE            '/dev/UDB-MISC/UDB-XINSD' [2.00 GB] inherit
  ACTIVE            '/dev/LOG/UDB-LOG' [20.00 GB] inherit
  ACTIVE            '/dev/DATA2/UDB-DATA2' [60.00 GB] inherit
  ACTIVE            '/dev/DATA/UDB-DATA' [60.00 GB] inherit
  ACTIVE            '/dev/root_VG/ROOT' [24.00 GB] inherit
  ACTIVE            '/dev/root_VG/VAR' [23.78 GB] inherit
  ACTIVE            '/dev/root_VG/TMP' [8.00 GB] inherit
  ACTIVE            '/dev/root_VG/SWAP' [8.00 GB] inherit
  ACTIVE            '/dev/root_VG/DBS-UDB' [25.00 GB] inherit
  ACTIVE            '/dev/root_VG/OPT-IBM' [5.00 GB] inherit
[root@aiglxapp22 ~]# mount /udb/usertemp
[root@aiglxapp22 ~]# df -h /udb/usertemp
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/DB2-VG-UDB--USERTEMP
                       40G   16G   23G  41% /udb/usertemp
[root@aiglxapp22 ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/root_VG-ROOT
                       24G  3.0G   20G  14% /
/dev/mapper/root_VG-VAR
                       24G  724M   22G   4% /var
/dev/mapper/root_VG-TMP
                      7.8G  211M  7.2G   3% /tmp
/dev/sda1             190M   30M  151M  17% /boot
tmpfs                  16G  4.0K   16G   1% /dev/shm
df: `/dbsdata/database_backup': Stale NFS file handle
/dev/mapper/root_VG-OPT--IBM
                      5.0G  1.1G  3.6G  24% /opt/ibm
/dev/mapper/root_VG-DBS--UDB
                       25G  173M   24G   1% /dbs/udb
/dev/mapper/DATA-UDB--DATA
                       60G  7.7G   49G  14% /udb/data
/dev/mapper/DATA2-UDB--DATA2
                       60G  7.7G   49G  14% /udb/data2
/dev/mapper/LOG-UDB--LOG
                       20G  4.4G   15G  24% /udb/log
/dev/mapper/DB2-VG-UDB--SYSTEMP
                       40G   21G   18G  55% /udb/systemp
/dev/mapper/DB2-VG-UDB--DIAG
                      9.9G  151M  9.2G   2% /udb/diag
/dev/mapper/DB2-VG-UDB--SYSCAT
                      9.9G  497M  8.9G   6% /udb/syscat
/dev/mapper/DB2-VG-UDB--XINSD
                      2.0G  1.5G  391M  80% /udb/home/udbxinsd
re2aixut1:/software   186G  146G   40G  79% /mnt
re2unxpv013:/usapool/export/VAS
                      186G  146G   40G  79% /mnt
/dev/mapper/DB2-VG-UDB--USERTEMP
                       40G   31G  7.2G  81% /udb/usertemp
aignas225:/vol/aignas225v12dump/dbdump1
                      4.0T  3.7T  346G  92% /auto/dbdump1
[root@aiglxapp22 ~]# umount /mnt
[root@aiglxapp22 ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/root_VG-ROOT
                       24G  3.0G   20G  14% /
/dev/mapper/root_VG-VAR
                       24G  724M   22G   4% /var
/dev/mapper/root_VG-TMP
                      7.8G  211M  7.2G   3% /tmp
/dev/sda1             190M   30M  151M  17% /boot
tmpfs                  16G  4.0K   16G   1% /dev/shm
df: `/dbsdata/database_backup': Stale NFS file handle
/dev/mapper/root_VG-OPT--IBM
                      5.0G  1.1G  3.6G  24% /opt/ibm
/dev/mapper/root_VG-DBS--UDB
                       25G  173M   24G   1% /dbs/udb
/dev/mapper/DATA-UDB--DATA
                       60G  7.7G   49G  14% /udb/data
/dev/mapper/DATA2-UDB--DATA2
                       60G  7.7G   49G  14% /udb/data2
/dev/mapper/LOG-UDB--LOG
                       20G  4.4G   15G  24% /udb/log
/dev/mapper/DB2-VG-UDB--SYSTEMP
                       40G   21G   18G  55% /udb/systemp
/dev/mapper/DB2-VG-UDB--DIAG
                      9.9G  151M  9.2G   2% /udb/diag
/dev/mapper/DB2-VG-UDB--SYSCAT
                      9.9G  497M  8.9G   6% /udb/syscat
/dev/mapper/DB2-VG-UDB--XINSD
                      2.0G  1.5G  391M  80% /udb/home/udbxinsd
re2aixut1:/software   375G  327G   49G  87% /mnt
/dev/mapper/DB2-VG-UDB--USERTEMP
                       40G   31G  7.2G  81% /udb/usertemp
aignas225:/vol/aignas225v12dump/dbdump1
                      4.0T  3.7T  346G  92% /auto/dbdump1
[root@aiglxapp22 ~]# umount /mnt
[root@aiglxapp22 ~]# df -h /auto/dbdump1
Filesystem            Size  Used Avail Use% Mounted on
aignas225:/vol/aignas225v12dump/dbdump1
                      4.0T  3.7T  346G  92% /auto/dbdump1
[root@aiglxapp22 ~]# df -hP /auto/dbdump1
Filesystem            Size  Used Avail Use% Mounted on
aignas225:/vol/aignas225v12dump/dbdump1  4.0T  3.7T  346G  92% /auto/dbdump1
[root@aiglxapp22 ~]# man df
[root@aiglxapp22 ~]# fdisk -l

Adding multiple route on Linux

Adding default route manually.
# route add default gw 192.168.20.20

# route add -host 192.168.20.20 gw 192.168.10.20
# route add default gw 192.168.10.20 eth0 # specify the interface if you have multiple.
# ip route add 192.168.20.0/24 dev eth0
# route add -net 192.168.20.0 netmask 255.255.255.0 gw 192.168.20.20 dev eth0

# service network restart

lxbl55% nexec lxapp23 cat etc/sysconfig/network-scripts/route-eth0
#default via 192.168.20.25 -- the original entry.
# Sample
GATEWAY0=Your gateway/router
NETMASK0=Your subnet Mask
ADDRESS0=Your network
#
# 172.16.0.0
GATEWAY0=192.168.20.25
NETMASK0=255.240.0.0
ADDRESS0=172.16.0.0
#
# 10.0.0.0
GATEWAY1=192.168.20.25
NETMASK1=255.0.0.0
ADDRESS1=10.0.0.0
#
# 192.168.0.0
GATEWAY2=192.168.20.25
NETMASK2=255.255.0.0
ADDRESS2=192.168.0.0
#
#192.168.20.0
GATEWAY3=0.0.0.0
NETMASK3=255.255.255.0
ADDRESS3=192.168.20.0
#
#192.168.16.0
GATEWAY4=192.168.20.20
NETMASK4=255.255.255.0
ADDRESS4=192.168.16.0
#
#0.0.0.0
GATEWAY5=192.168.20.20
NETMASK5=0.0.0.0
ADDRESS5=0.0.0.0
lxbl55%

lxbl55% nexec lxapp23 netstat -rn
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
192.168.16.0    192.168.20.20    255.255.255.0   UG        0 0          0 eth2
192.168.20.0     0.0.0.0         255.255.255.0   U         0 0          0 eth2
169.254.0.0     0.0.0.0         255.255.0.0     U         0 0          0 eth2
192.168.0.0     192.168.20.25    255.255.0.0     UG        0 0          0 eth2
172.16.0.0      192.168.20.25    255.240.0.0     UG        0 0          0 eth2
10.0.0.0        192.168.20.25    255.0.0.0       UG        0 0          0 eth2
0.0.0.0         192.168.20.20    0.0.0.0         UG        0 0          0 eth2

lxbl55% nexec lxapp23 cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
USERCTL=no
BOOTPROTO=static
NETMASK=255.255.255.0
IPADDR=192.168.20.30
PEERDNS=no
check_link_down() {
 return 1;
}

lxbl55% nexec lxapp23 cat /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=lxapp23
lxbl55%

Reboot the confirm the change and run netstat -rn

How to upgrade the server from 6.3 to 6.5

How to upgrade the server from 6.3 to 6.5

if your environment is not able to communicate with your satellite server, then copy the image and install it locally to upgrade your system.

1. Upload and mount the iso image or copy the content of the file to the directory of your choice.
# mount image.iso /opt/RH6.5

2. Run the update.
# yum -y localinstall *.rpm --nogpgcheck

3. Verify OS is at 6.5
# cat /etc/*release

4. Reboot server
# reboot

5. Verify the new kernel. kernel level should be 2.6.32-431.11.2.el6.x86_64
# uname -a