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Configure logs to be sent to External Syslog Server (Synology) using ESXi Web Host Client

January 10, 2017 Leave a comment

Step 1 – Add the external log server

Go to Manage > System > Advanced Settings and locate Syslog.global.logHost and edit settings.

Add the following: udp://SERVER.domain.com:514

Step 2 – Configure Firewall rules to allow access to external syslog server.

Go to Host > Networking > Firewall Rules and locate syslog and edit settings:

Select Only allow connections from the following networks and enter the external syslog server.

-Eric

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Upgrading Zabbix from 1.8.x to 2.4.x

May 28, 2015 2 comments

Rough guide to get your monitoring server up to Zabbix 2.4.x on CentOS 6.x
The upgrade needs to be done in 3 stages.

Stage 1 – Upgrade from 1.8.x to 2.0.x: All steps, with 4a;5a;
Stage 2 – Upgrade from 2.0.x to 2.2.x: Only steps 1;2;3;4b;5b;7;8;
Stage 3 – Upgrade from 2.2.x to 2.4.x: Only steps 1;2;3;4c;5c;7;8;9;

  1. Stop Zabbix Services
    /etc/init.d/zabbix-server stop
    /etc/init.d/zabbix-agent stop
  2. Take a backup of zabbix configuration files (/etc/zabbix/*)
    mkdir ~/etc_zabbix.bak
    cp -r -p /etc/zabbix/* ~/etc_zabbix.bak
  3. Take a backup of Zabbix database (mysql)
    mysqldump -u zabbix -p zabbix > ~/zabbix_dump.sql
  4. Remove your existing Zabbix Installation
    a) yum erase zabbix*
    b) yum erase zabbix20* – remove zabbix 2.0 –
    c) yum erase zabbix22* – remove zabbix 2.2

    Note! For version 2.0 and 2.2 installed via epel use commands below

  5. Install Zabbix
    a) yum –enablerepo=epel install zabbix20-server-mysql zabbix20-agent zabbix20-web-mysql
    b) yum install zabbix22-server-mysql zabbix22-agent zabbix22-web-mysql
    c) Add 2.4 repo:  rpm -ivh http://repo.zabbix.com/zabbix/2.4/rhel/6/x86_64/zabbix-release-2.4-1.el6.noarch.rpm
    Install zabbix 2.4: yum install zabbix-server-mysql zabbix-web-mysql zabbix-agent
  6. Upgrade DB Schema from 1.8.x to 2.0.x consists of 2 steps. (Only required for 1.8 to 2.0)
    a) make upgrade script executable.
    chmod +x /usr/share/zabbix-mysql/upgrades/2.0/upgrade
    b) run the script
    cd /usr/share/zabbix-mysql/upgrades/2.0/
    ./upgrade -u zabbix -p zabbix

    Note! Bear in mind that upgrade will take a while and you will get multiple DB password prompts
    Note2! for Stage2 and Stage3, mysql upgrade will happen automatically after you start Zabbix

  7. Next compare and update your configuration files. Old config files are in the zabbix folder (/etc/zabbix/) with the following extension .rpmsave
    Use the following commands to compare:
    diff /etc/zabbix/zabbix_agentd.conf.rpmsave /etc/zabbix_agentd.conf
    diff /etc/zabbix/zabbix_server.conf.rpmsave /etc/zabbix_server.conf
    Or use a tool called winmerge
  8. Start Zabbix-services
    /etc/init.d/zabbix-server start
    /etc/init.d/zabbix-agent start
  9. Enable autostart for Zabbix services
    chkconfig zabbix-server on
    chkconfig zabbix-agent on

-Eric