Posts by Category

sysadmin

HP-UX LVM scripts (update)

2 minute read

Over the last couple of years I have made some small and not so small improvements to the LVM scripts for HP-UX. Most notably additional options/toggles were...

Tracing automounter

2 minute read

Levels Two levels of automounter tracing are available:

Running Zim in WSL

less than 1 minute read

Steps to run Zim on Windows Subsystem for Linux:

Serviceguard - problem with HA-NFS shares

3 minute read

Problem At cluster package stop, a file system is not unmounting correctly because the underlying NFS share is not being unshared first correcty:

How to fix permissions on a live mountpoint

less than 1 minute read

The usual way to update the ownerships and/or permissions of an actual mountpoint directory is to unmount the filesystem, then update its attributes and then...

ZFS appliance scripts

less than 1 minute read

Oracle ZFS appliances provide a javascript-like scripting language that can be used to query the appliance. Here are 2 scripts that have come in very handy ...

cpsh commands

2 minute read

About cpsh allows the real-time display of Glance metrics from any system where the perfd daemon is running. If no options (with exceptions mentioned below)...

LUN ID 0 issue

3 minute read

Background HP-UX requires at least one LUN device to be present with LUN or SCSI ID 0 in order to scan the corresponding SCSI bus. This LUN ID 0 device will...

OA (Operations Agent) troubleshooting

3 minute read

About For many years I have dealing with the HP OpenView OA (Operations Agent) either its in full incarnation of the software stack or just when using the O...

What is a LUNZ device?

3 minute read

About LUNZ is defined as : The logical unit number that an application client uses to communicate with, configure and determine information about an SCSI s...

HP-UX LVM scripts in Linux style

2 minute read

I wrote a couple of Perl scripts that make querying basic LVM information on HP-UX hosts a bit easier and show info alike the much loved Linux tools pvs/vgs/...

List IBM tapes (atdd)

less than 1 minute read

A quick-and-dirty script to list the details of IBM atdd tape devices:

How to send SNMP traps (OVPA)

less than 1 minute read

Since the HP OV Performance Agent is installed on most HP-UX systems, the trapsend command can be used to send SNMP test traps.

Set up BIND on HP-UX

3 minute read

About This is a short guide in getting a DNS server up and running on a HP-UX system. The obvious choice for DNS server software is BIND as pre-compiled bun...

Unable to open pty: no such file or directory

1 minute read

It appears that OpenVZ and CentOS can have some issues regarding udev. After installing the Development tools yum package I found myself unable to do anythin...

OpenVZ failing to assign IP address

1 minute read

I was presented with quite an unpleasant surprise today when I rebooted a few OpenVZ containers running CentOS 7 with the latest patches applied. Though ea...

Clean up failed LUN paths on HP-UX

1 minute read

About The handle_failed_lunpaths.sh is a small script to show and/or remove failed LUN paths on HP-UX using the scsimgr tool. Code Download the script fro...

SSH X11 forwarding not working

less than 1 minute read

Problem X11 forwarding via SSH is not working and gives following error in SYSLOG:

OpenVZ breaks networking

1 minute read

I planned a reboot of my server(s) over the weekend to fix a hanging ILO problem. Since the remote console was out of order, I had to go the datacenter offer...

Why I use ZIM Wiki

2 minute read

My main use for Zim Wiki is that of a documentation tool covering the tasks and projects I am doing as a freelancer system administrator/engineer. And at th...

Check VxVM dmp paths

less than 1 minute read

A quick snippet to count the multi-paths for each disk:

How to enable agile naming mode in VxVM

1 minute read

By default Veritas Volume Manager uses HP-UX legacy naming scheme instead of the agile view. Below is a procedure to change this behaviour.

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news

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storage

ZFS appliance scripts

less than 1 minute read

Oracle ZFS appliances provide a javascript-like scripting language that can be used to query the appliance. Here are 2 scripts that have come in very handy ...

LUN ID 0 issue

3 minute read

Background HP-UX requires at least one LUN device to be present with LUN or SCSI ID 0 in order to scan the corresponding SCSI bus. This LUN ID 0 device will...

What is a LUNZ device?

3 minute read

About LUNZ is defined as : The logical unit number that an application client uses to communicate with, configure and determine information about an SCSI s...

Clean up failed LUN paths on HP-UX

1 minute read

About The handle_failed_lunpaths.sh is a small script to show and/or remove failed LUN paths on HP-UX using the scsimgr tool. Code Download the script fro...

Check VxVM dmp paths

less than 1 minute read

A quick snippet to count the multi-paths for each disk:

How to enable agile naming mode in VxVM

1 minute read

By default Veritas Volume Manager uses HP-UX legacy naming scheme instead of the agile view. Below is a procedure to change this behaviour.

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scripts

HP-UX LVM scripts (update)

2 minute read

Over the last couple of years I have made some small and not so small improvements to the LVM scripts for HP-UX. Most notably additional options/toggles were...

ZFS appliance scripts

less than 1 minute read

Oracle ZFS appliances provide a javascript-like scripting language that can be used to query the appliance. Here are 2 scripts that have come in very handy ...

HP-UX LVM scripts in Linux style

2 minute read

I wrote a couple of Perl scripts that make querying basic LVM information on HP-UX hosts a bit easier and show info alike the much loved Linux tools pvs/vgs/...

List IBM tapes (atdd)

less than 1 minute read

A quick-and-dirty script to list the details of IBM atdd tape devices:

Clean up failed LUN paths on HP-UX

1 minute read

About The handle_failed_lunpaths.sh is a small script to show and/or remove failed LUN paths on HP-UX using the scsimgr tool. Code Download the script fro...

How to make ksh behave like Bash

less than 1 minute read

Following snippet is not by my hand but I am posting it anyway as I am unable to find the original reference to it.

HP Proliant HW monitor

4 minute read

About The hppro_hwmon Perl script will query the HP Linux hpasmcli and hpacucli command-line tools to check or show the health of your Proliant hardware. It...

Serviceguard ECMT Oracle mount helper

4 minute read

About The control_pkg_db.sh script provides a quick way to manually (de)-activate the disk resources (VxVM) of a cluster package created with the Servicegua...

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networking

Tracing automounter

2 minute read

Levels Two levels of automounter tracing are available:

OpenVZ failing to assign IP address

1 minute read

I was presented with quite an unpleasant surprise today when I rebooted a few OpenVZ containers running CentOS 7 with the latest patches applied. Though ea...

SSH X11 forwarding not working

less than 1 minute read

Problem X11 forwarding via SSH is not working and gives following error in SYSLOG:

OpenVZ breaks networking

1 minute read

I planned a reboot of my server(s) over the weekend to fix a hanging ILO problem. Since the remote console was out of order, I had to go the datacenter offer...

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monitoring

ZFS appliance scripts

less than 1 minute read

Oracle ZFS appliances provide a javascript-like scripting language that can be used to query the appliance. Here are 2 scripts that have come in very handy ...

cpsh commands

2 minute read

About cpsh allows the real-time display of Glance metrics from any system where the perfd daemon is running. If no options (with exceptions mentioned below)...

OA (Operations Agent) troubleshooting

3 minute read

About For many years I have dealing with the HP OpenView OA (Operations Agent) either its in full incarnation of the software stack or just when using the O...

How to send SNMP traps (OVPA)

less than 1 minute read

Since the HP OV Performance Agent is installed on most HP-UX systems, the trapsend command can be used to send SNMP test traps.

HP Proliant HW monitor

4 minute read

About The hppro_hwmon Perl script will query the HP Linux hpasmcli and hpacucli command-line tools to check or show the health of your Proliant hardware. It...

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backup

List IBM tapes (atdd)

less than 1 minute read

A quick-and-dirty script to list the details of IBM atdd tape devices:

Migrating from Bacula to Burp

12 minute read

I migrated from the Bacula backup/restore tool (v5) to the Burp software. In this short article I will talk a bit about the rationale behind that decision ...

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virtualization

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database

Serviceguard ECMT Oracle mount helper

4 minute read

About The control_pkg_db.sh script provides a quick way to manually (de)-activate the disk resources (VxVM) of a cluster package created with the Servicegua...

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hardware

List IBM tapes (atdd)

less than 1 minute read

A quick-and-dirty script to list the details of IBM atdd tape devices:

HP Proliant HW monitor

4 minute read

About The hppro_hwmon Perl script will query the HP Linux hpasmcli and hpacucli command-line tools to check or show the health of your Proliant hardware. It...

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upgrade

OpenVZ failing to assign IP address

1 minute read

I was presented with quite an unpleasant surprise today when I rebooted a few OpenVZ containers running CentOS 7 with the latest patches applied. Though ea...

OpenVZ breaks networking

1 minute read

I planned a reboot of my server(s) over the weekend to fix a hanging ILO problem. Since the remote console was out of order, I had to go the datacenter offer...

Back to Top ↑

security

How to fix permissions on a live mountpoint

less than 1 minute read

The usual way to update the ownerships and/or permissions of an actual mountpoint directory is to unmount the filesystem, then update its attributes and then...

Back to Top ↑

cluster

Serviceguard - problem with HA-NFS shares

3 minute read

Problem At cluster package stop, a file system is not unmounting correctly because the underlying NFS share is not being unshared first correcty:

Serviceguard ECMT Oracle mount helper

4 minute read

About The control_pkg_db.sh script provides a quick way to manually (de)-activate the disk resources (VxVM) of a cluster package created with the Servicegua...

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performance

cpsh commands

2 minute read

About cpsh allows the real-time display of Glance metrics from any system where the perfd daemon is running. If no options (with exceptions mentioned below)...

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documentation

Running Zim in WSL

less than 1 minute read

Steps to run Zim on Windows Subsystem for Linux:

Why I use ZIM Wiki

2 minute read

My main use for Zim Wiki is that of a documentation tool covering the tasks and projects I am doing as a freelancer system administrator/engineer. And at th...

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migration

Migrating from Bacula to Burp

12 minute read

I migrated from the Bacula backup/restore tool (v5) to the Burp software. In this short article I will talk a bit about the rationale behind that decision ...

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packaging

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fun

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