Table 20-1 yields handy information concerning network management tasks in a cluster.
Network Services | |||||
---|---|---|---|---|---|
Service | Configuration | Cluster Aware | CAA | Notes | |
DHCP | client | x | x | x | Not Allowed. Static Addresses only |
server | common | x | √ | Implemented as a single-instance, highly-available CAA application resource (dhcp). Clients should use the default cluster alias. | |
DNS/BIND | client | common | x | x | /etc/resolv.conf is a cluster-common file. |
server | common | x | √ | Implemented as a single-instance, highly-available CAA application resource (named). | |
NFS | client | common | x | x | By default, the NFS is configured and enabled on all members. |
server | common | √ | x | The NFS server implementation is cluster-aware. By default, the NFS is configured and enabled on all members. Clients must use the default cluster alias prior to V5.1A. As of V5.1A, alternate aliases can be defined in /etc/exports.aliases. | |
x | √ | Server versions of rpc.statd & rpc. lockd are implemented as a single-instance, highly-available CAA application resource(cluster_lockd). | |||
autofs | common | x | √ | Implemented as a single-instance, highly-available CAA application resource (autofs). | |
NIS | client | common | x | x | By default, the NFS is configured and enabled on all members. |
master server | common | x | √ | If configured on one member, it is configured the same on all members. ypxfrd is multi-instance, and is active on all the members. Although rpc . yppasswdd runs on every node, it is single-instance; only one daemon is actually active at a time. Clients should use the default cluster alias. | |
slave server | common | x | x | By default, the NFS is configured and enabled on all members. | |
NTP | member-specific | x | x | Time must be synchronized. Members are configured as peers. | |
Routing | member-specific | x | x | Must be enabled prior to V5.1A PK1. | |
gated | common | x | x | Member-specific routing information added and maintained by CLUA (aliasd). |