在安装 db2 purescale 环境时，遇到过如下报错：
Validating “rdma” …
Found package “rdma” on host “node02”.
DBT3566E The db2prereqcheck utility detected that the service named “rdma” is not enabled on host “node02”.
ERROR : Requirement not matched.
首先确认本机安装有rdma相关组件：
[root@node02 server]# yum search rdma
Loaded plugins: product-id, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
======================================================================== N/S Matched: rdma ========================================================================
librdmacm.i686 : Userspace RDMA Connection Manager
librdmacm.x86_64 : Userspace RDMA Connection Manager
librdmacm-devel.i686 : Development files for the librdmacm library
librdmacm-devel.x86_64 : Development files for the librdmacm library
librdmacm-utils.x86_64 : Examples for the librdmacm library
libibverbs.i686 : A library for direct userspace use of RDMA (InfiniBand/iWARP) hardware
libibverbs.x86_64 : A library for direct userspace use of RDMA (InfiniBand/iWARP) hardware
mvapich.i686 : MPI implementation over Infiniband RDMA-enabled interconnect
mvapich.x86_64 : MPI implementation over Infiniband RDMA-enabled interconnect
qperf.x86_64 : Measure socket and RDMA performance
rdma.noarch : Infiniband/iWARP Kernel Module Initializer
Name and summary matches only, use “search all” for everything.
[root@node02 server]# yum install -y rdma
Loaded plugins: product-id, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Setting up Install Process
Package rdma-3.6-1.el6.noarch already installed and latest version
Nothing to do
[root@node02 server]# rpm -qa | grep rdma
rdma-3.6-1.el6.noarch
librdmacm-1.0.17-0.git4b5c1aa.el6.x86_64
librdmacm-devel-1.0.17-0.git4b5c1aa.el6.x86_64
librdmacm-1.0.17-0.git4b5c1aa.el6.i686
librdmacm-devel-1.0.17-0.git4b5c1aa.el6.i686
[root@node02 server]# chkconfig –list | grep rdma
rdma 0:off 1:off 2:off 3:off 4:off 5:off 6:off
[root@node02 server]# chkconfig –level 2345 rdma on
[root@node02 server]# chkconfig –list | grep rdma
rdma 0:off 1:off 2:on 3:on 4:on 5:on 6:off
[root@node02 server]# ./db2prereqcheck
Validating “rdma” …
Found package “rdma” on host “node02”.
The service named “rdma” is enabled on host “node02”.
Requirement matched.
最后确认rdma的安装前提条件符合要求.
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