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Set Up Worker Node

Before setting up open-iscsi for the worker nodes, ensure all requirements in Prerequisites are met.

  1. On the node console, run the following command to install open-iscsi.
sudo yum install iscsi-initiator-utils -y
sudo apt-get install open-iscsi -y

  1. Edit the file /etc/iscsi/iscsid.conf. Set the value of the field node.startup to manual.

    sudo sed -i 's/^node.startup = automatic$/node.startup = manual/' /etc/iscsi/iscsid.conf

    Note: The value of MaxRecvDataSegmentLength in /etc/iscsi/iscsi.conf is set at 32,768 by default, and the maximum number of PVs is limited to 80,000 in IOMesh. To create PVs more than 80,000 in IOMesh, it is recommended to set the value of MaxRecvDataSegmentLength to 163,840 or above.

  2. Disable SELinux.

    sudo setenforce 0
sudo sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config

  3. Load iscsi_tcp kernel module.

    sudo modprobe iscsi_tcp
sudo bash -c 'echo iscsi_tcp > /etc/modprobe.d/iscsi-tcp.conf'

  4. Start iscsid service.

    sudo systemctl enable --now iscsid
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