Posts from category "2016"

Cisco UCS performance manager stops responding!

Occasionally Cisco UCS performance manager (based on Zenoss 5) may stop responding with main serviced daemon inactive - which leads to unresponsive web access and all features...version on which I founded this was 2.0 (but 2.0.1 and 2.0.2 are also the same) of UCS performance manager. Because of that I created small script to check status of service and do an restart - until something better and official came out:



if (( $(ps aux | grep -v grep| grep -v "$0" | grep serviced| wc -l) > 0 ))


echo "$service is running!!!"


service $service restart


Give it executable rights - chmod +x [name of script] - and schedule it through standard cron job.

Until something better this should do it...

Zimbra mail server check for spammer account

Useful cmd for quick checking compromised account in case of internal spam:

cat /var/log/zimbra.log | sed -n 's/.*sasl_username=//p' | sort | uniq -c | sort -n

Accont with much difference in sent mails is the one to inspect...

Zimbra open source collaboration mail server installation requirements

These are install requirements that I personally use when I'm playing with lab/production Zimbra open source mail servers:

- CentOS OS (minimal ISO) - base OS for Zimbra installation from

- 8GB+ RAM, 10GB+ HDD, 2+ vCPU

Zimbra installation:

DISABLE POSTFIX FROM BASE CENTOS INSTALL WHICH COMES BY DEFAULT - systemctl stop postfix / systemctl remove postfix

disable iptables firewall - assumes you have some other firewall at public side for your mail server

set selinux adequately at /etc/sysconfig/selinux

setup local DNS adequately at /etc/hosts - you must resolve domain names which you are going to use in mail server so that system successfully works - even installer checks for resolvable hostname via DNS

tar xzvf [zcsfilename.tgz] - unpack previosly downloaded file from

cd [zcsfilename]

./ - begin installation process and follow required steps

type X to see complete main menu and additionaly configure items with asterisks (****) - ie admin password!

Admin URL - https://[]:7071

setup adequate DNS checks in Global settins --> MTA tab!

setup volumes for storing mails in Configure-->Servers-->Volumes - you don't want to use default /opt/zimbra folder!

Useful settings:

- zmcontrol status - all zimbra services display (su - zimbra - so that you execute this cmd as zimbra user)

- zmprov mcf zimbraMtaSmtpdRejectUnlistedRecipient yes

- zmprov mcf zimbraMtaSmtpdRejectUnlistedSender yes

- zmprov ms [] zimbraMtaLmtpHostLookup native - check for attribute inside zimbra ldap

- zmprov mcf zimbraMtaLmtpHostLookup native - in case of single server change in global config also required

- zmmtactl restart

- zmconfigdctl restart

- install webmin, htop tools for quick system support...

Create user accounts and publish A/MX records of your new mail system - it's gonna work...


Vicibox contact center installation requirements

These are recommended installation requirements if you need to play with Vicibox open source scalable contact center solution:


- Archive server - 2GB+ RAM, 1TB HDD

- Web server - 4GB+ RAM, 160GB HDD

- Telephony server - 4GB+ RAM, 160GB HDD

OS installation notes (assumes you already downloaded ISO from

root / vicidial - default login

os-install - Suse OS installation

yast lan - setup properly network and DNS properties

yast firewall - setup properly firewall inside OS

zypper up -y - install updates and reboot after that

yast timezone - setup properly timezone

Vicibox express installation:

vicibox-express - complete express setup

Vicibox cluster installation:

vicibox-install - install required component and reboot after that

Default username / password for accessing vicibox configuration - 6666 / 1234 - CHANGE AFTER INITIAL LOGIN!

Vicibox upgrade procedure:

vicibox-upgrade - start with DB following Web and Telephony server - ALWAY MAKE BACKUP FIRST!

Handy tools after complete setup for OS control:

install webmin -

install htop - zypper in htop


vDP 6.1 vcenter web client connection problem

If you have problem connecting newest vDP 6.1.2 appliance with vsphere web client in following circumstances:

- you are using vDS (Nexus 1kV also)

- you migrate everything to standard vswitch and it works like it shoud - THEN

please follow procedure from link below:

Unable to connect to vCenter appliance with winSCP - please change SFTP environment protocol options in advanced settings to "shell /usr/lib64/ssh/sftp-server" and enable SSH, Shell access in web Admin settings.

It should work like charm...