Prepare hosts

To manage a cluster and its nodes via ADCM, it is necessary to prepare hosts for a cluster and link these hosts to ADCM. This is the function of ADCM hostproviders — special plugins for ADCM, which encapsulate the complex mechanism of interaction between ADCM and the hosts controlled by it.

ADCM supports several types of hostproviders. For more information on how to configure hostproviders and use them to create hosts, refer to the following documentation:

For offline installation, the SSH hostprovider is recommended.

Make sure that routing tables on each host contain the default route — 0.0.0.0/0.

Use the route command to check this:

$ route

The output should be similar to:

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         gateway         0.0.0.0         UG    100    0        0 eth0
10.92.40.0      0.0.0.0         255.255.252.0   U     100    0        0 eth0

If the 0.0.0.0/0 default route is missing in the output, add it using the following command:

$ sudo route add default gw 0.0.0.0 eth0

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