Introduction Linux swap is a space on a Linux system's hard drive that is used as virtual memory. It is an area of the hard drive that is set aside to temporarily store data that cannot be held in RAM (Random Access Memory), either because the RAM is full or because the data is not […]

On the agent Make the Zabbix library directory: Make the Zabbix agent directory under the Zabbix: mkdir /usr/local/lib/zabbix/agent/ Move to the created agent directory: cd /usr/local/lib/zabbix/agent/ Download compiled module for your specific Linux distro (I am using CentOS 7): wget https://github.com/monitoringartist/zabbix-docker-monitoring/raw/gh-pages/centos7/3.4/zabbix_module_docker.so Ensure you download the correct (.so) file for your Linux distro and agent version. […]

Enter config terminal: config t Select the interface you need. Normally Fast Ethernet Ports: interface FastEthernet1 Enable Portfast: spanning-tree portfast exit exit Save the new config: copy run start To perform the operation in bulk you can select the full range of Fast Ethernet ports and thenapply portfast to them all. Enter config terminal: conf […]

RFC4821 proposes a mechanism to detect ICMP black holes and tries to adjust the path MTU in a smart way rather than performing DF set pings etc. On Linux implementation of this mechanism is pretty straightforward and on recent distributions it comes built into the OS by default. Enable TCP MTU Probing First check to […]