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zfs cheat sheet Solaris 11

zfs cheat sheet Solaris 11 The ZFS file system is a file system that fundamentally changes the way file systems are administered, with features and benefits not found in other file systems available today. ZFS is robust, scalable, and easy to administer.ZFS uses the concept of storage pools to manage physical storage, ZFS eliminates volume […]

RHEL / CentOS 7 Network Teaming

Below is an example on how to configure network teaming on RHEL/CentOS 7. It is assumed that you have at least two interface cards.

Show Current Network Interfaces [root@rhce-server ~]$ ip link 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 2: eno16777736: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state […]

Configuring Postfix as a Null Client

Configuring Postfix as a Null Client

This howto assumes that the relay server’s IP address is 192.168.1.22 and is running RHEL/CentOS 7. Only mail from the 192.168.1.0/24 network should be accepted and relayed.

Install Postfix [root@rhce-server ~]# yum install postfix

Configure Systemd [root@rhce-server ~]# systemctl enable postfix [root@rhce-server ~]# ^enable^start

Configure the Firewall [root@rhce-server ~]# […]

unbound RHCE

This howto shows the steps needed to configure unbound for DNS caching and forwarding from the 192.168.1.0/24 network. It assumes the server’s IP address is 192.168.1.22 and is running RHEL/CentOS 7.

Installation [root@rhce-server ~]# yum install unbound

Configure Systemd [root@rhce-server ~]# systemctl enable unbound ln -s ‘/usr/lib/systemd/system/unbound.service’ ‘/etc/systemd/system/multi-user.target.wants/unbound.service’ [root@rhce-server ~]# ^enable^start systemctl start unbound

Configure […]