Expand Logical Volume in Red Hat VMware

After adding a separate disk run to verify if the space was added:

1. fdisk -l2.
2. create a new partition fdisk /dev/sdb
   1. p – to print current partition table
   2. n – to create a new partition
   3. p – for primary
   4. 1 – depending on the output of the partition table output
   5. press return two times to accept the defaults (first and last sector)
   6. t – to change the system’s partition ID
   7. 8e – to change to Linux LVM
   8. w – to write the changes
3. restart VM
4. fdisk -l – to verify that partition was successfully created
5. convert a partition to physical volume
   $ pvcreate /dev/sdb1
   Physical volume “/dev/sdb1” successfully created
6. Extend current volume group
   vgextend rhel /dev/sdb1
   Volume group “rhel” successfully extended
7. Run vgdisplay to verify if free space was added
   vgdisplay rhel | grep “Free”
   Free  PE / Size       4095 / 16.00 GiB
8. extend logical volume with free space
   lvextend -l +100%FREE /dev/rhel/root
   Extending logical volume root to 66.00 GiB
   Logical volume root successfully resized
9. Expand ext3 file system online inside of Logical Volume
   xfs_growfs /dev/rhel/root – Red Hat 7
   ext2online /dev/rhel/root
   resize2fs /dev/rhel/root

No Valid Subscription message from Proxmox server

You do not have a valid subscription for this server. Please visit www.proxmox.com to get a list of available options.

1. One way of removing the message is to purchase a subscription.
2. Modify subscrption configuration file
   1. SSH to proxmox server
   2. Create a backup of the existing subscription checkup file
      # cp /usr/share/pve-manager/ext4/pvemanagerlib.js /usr/shar e/pve-manager/ext4/pvemanagerlib.js.orig
   3. Edit pvemanagerlib.js file
      # vim /usr/share/pve-manager/ext4/pvemanagerlib.js
   4. In “checked_command” function search for if (data.status !== ‘Active’) { and change to if(false) {
   5. Save and exit the file
   6. Clear your browsing data and log back in to the proxmox server the message will not pop-up anymore.

SQL2547N while restoring database on DB2 10.5

While restoring database from DB2 9.7 to DB2 10.5 I encountered the following error:

PROBLEM

SQL2547N
The database was not restored because the backup image is from a previous release and requires rollforward recovery.

TAKEN ACTION:

I ran the DB2 check backup command db2ckbkp -h <backup_file_name>.001

And resulted with:
[1] Buffers processed: #################

Image Verification Complete – successful.

SOLUTION:

To resolve the problem a new OFFLINE backup is needed, power down your db instance and take a new backup.

Setup Proxy in SUSE/VCSA

To setup proxy manually in VCSA 5.5 login as root and look into the following file:

/etc/sysconfig/proxy

PROXY_ENABLED=”yes”

HTTP_PROXY=”http://<IP address or FQDN>:<port_number>”

HTTPS_PROXY=”http://<IP address or FQDN>:<port_number>”

FTP_PROXY=”http://<IP address or FQDN>:<port_number>”

NO_PROXY=”localhost, 127.0.0.1″

 

If you need to authenticate via proxy

Create a file in your home directory,

/root/.curlrc with permissions 644

and contain the following:

# Proxy credentials

proxy-user = “<username>:<password>”

source the file to apply the changes

source /root/.curlrc

 

how to install a package from a directory

If you have access to the packages directory but your machine is not registered you can use the command to install the package, remember to have dependencies resolved.

$ yum --nogpgcheck localinstall <package_name>.rpm

you can also use:
$ rpm -i <package_name>.rpm

VMware PowerShell unable to start

Even when launching VMware PowerShell CLI with administrator privileges you are still unable to start it.

Moreover, you are unable to change execution policy for the machine.

Try the following it only changes policy for current user.

Set-ExecutionPolicy Unrestricted -Scope CurrentUser

 

openssl verify error 20 at 0 depth lookup:unable to get local issuer certificate

When testing my certificate against intermediate and root certificate I received the following error: error 20 at 0 depth lookup:unable to get local issuer certificate. The issue is probably related to the chain of the certificate so we need to create reliable chain.

1. My certificate needs to be merged with intermediate certificate into one file:
   $ cat intermediate.pem cert.pem > combined.pem
2. Then we can test it using openssl verify command:
   $ openssl verify -CAfile rootcert.pem combined.pem

Constant RDP disconnects from Windows 2012 on VMware

Running Windows Server 2012 virtual machine on VMware ESXi hypervisor and receive constant disconnects through RDP.

Checked the logs and found out e1qexpress which indicates incompatibility of virtualNIC
Power down the machine, remove existing network interface and add a new one based on VMXNET3.
Bring the machine up and Windows should automatically apply the changes.

 

Constant restarting of opscode-erchef – bad gateway

I’ve freshly installed Chef Server 12.7.0 on Ubuntu 16.04 LTS and opscode-erchef kept getting restarted approx every 40 seconds and was getting Bad Gateway error.

Checked the logs unfortunately, couldn’t conclude anything out of it. Found this open issue with Chef https://github.com/chef/chef-server/issues/435

By cleaning and re-configuring the server everything worked.

$ chef-server-ctl cleanse
$ chef-server-ctl reconfigure

 

Track or monitor a process

Received a Linux application and was proceeding with the launch after setting required executable permission.

By calling out the script nothing showed in the terminal thus started investigating.
Checked the usual place /var/log/* and no luck ..

Command for today is: strace
Which allowed me to find the missing packages.