Linux Platform Prerequisites
This section describes the Cluster Manager, eMake, and Electric Agent/EFS installation prerequisites on Linux platforms. It also describes a known Linux kernel performance issue.
For information about platform support such as operating systems, cloud-based and Kubernetes support, Make versions, eMake emulation, databases, bitnesses, and Visual Studio versions, see CloudBees Accelerator Supported Platforms.
Each host to run Accelerator software must be x86-64 compatible.
SELinux must be disabled. To disable SELinux, open
The following packages must be installed on each host that will run the Cluster Manager or agents.
The installer prompts you to install missing prerequisite libraries. If installation of these libraries fails, the installer displays the command that you must enter to install them afterward.
For your reference, following are the commands that you can use to install the required packages:
Affected systems might encounter reduced performance on both ext3 and ext4 file systems. Symptoms might include:
hung_task_timeout_secsmessages in system dmesg logs
widely variable agent availability (entering and exiting agent “penalty” status frequently)
contention over the
slower builds (with unexplained variances)
To help determine if your environment has this kernel issue, run
dmesg | grep hung_task_timeout
hung_task_timeout errors indicate a known Linux kernel issue. Contact your kernel provider to obtain a different version of the precompiled kernel.
For systems running RHEL 5.6, 5.7, 5.8, and 6.0, consider upgrading to 2.6.32-131 (RHEL 6.1) or downgrading to 2.6.18-194.32 (RHEL 5.5).
Upgrading the kernel might require you to reinstall various kernel modules such as video drivers, efs, and vm-tools. You can do so by running
apt-get dist-upgrade and then rebooting.