DPX will install on this family of Linux 8.0, but doesn't run. To be specific, cmagent doesn't start because a shared library it expect is no long part of the minimal distribution of this version. This article provides a work-around that allows cmagent to run.
- There's no obvious symptom that the shared library is missing. The sscmagent log file doesn't give any indication that cmagent didn't start.
- Attempting to add or browse the node from Configure Enterprise results in a 10061 error, indicating a failure to connect to CMAGENT on the system.
- Running "ps -ef" and searching cmagent will at best only find the grep that's looking for cmagent:
# ps -ef | grep cmagent root 25414 25307 0 21:28 pts/0 00:00:00 grep --color=auto cmagent
ResolutionThe shared library libnsl.so.1 has been deprecated, but a new version is still available with 8.0, though as a legacy library or as part of a compatibility package. First, see if the newer library is already installed on the system:
# ls /lib64/libnsl.so.2.0.0 ls: cannot access '/lib64/libnsl.so.2.0.0': No such file or directory
or, if present:
If not present, use "yum whatprovides libnsl" to confirm the package name, which will likely be "libnsl":
Updating Subscription Management repositories. libnsl-2.28-42.el8_0.1.i686 : Legacy support library for NIS Repo : @System Matched from: Provide : libnsl = 2.28-42.el8_0.1 libnsl-2.28-42.el8.i686 : Legacy support library for NIS Repo : rhel-8-for-x86_64-baseos-rpms Matched from: Provide : libnsl = 2.28-42.el8
Several more entries are likely to be printed. Install it with:
# yum install libnsl
This will likely install libnsl.so.2.0.0 and a symbolic link called libnsl.so.2. DPX expects a library named libnsl.so.1. Create an additional symbolic link:
# cd /lib64 # ln -s libnsl.so.2.0.0 libnsl.so.1
Then return to the DPX bin directory and confirm cmagent resolves the library:
# cd /opt/DPX/bin # ldd cmagent linux-vdso.so.1 (0x00007fff335ec000) libnsl.so.1 => /lib64/libnsl.so.1 (0x00007f7987f79000) libdl.so.2 => /lib64/libdl.so.2 (0x00007f7987d75000) libc.so.6 => /lib64/libc.so.6 (0x00007f79879b1000) libtirpc.so.3 => /lib64/libtirpc.so.3 (0x00007f798777e000) /lib64/ld-linux-x86-64.so.2 (0x00007f7988193000) libgssapi_krb5.so.2 => /lib64/libgssapi_krb5.so.2 (0x00007f798752e000) libkrb5.so.3 => /lib64/libkrb5.so.3 (0x00007f798723e000) libk5crypto.so.3 => /lib64/libk5crypto.so.3 (0x00007f7987022000) libcom_err.so.2 => /lib64/libcom_err.so.2 (0x00007f7986e1e000) libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f7986bfe000) libkrb5support.so.0 => /lib64/libkrb5support.so.0 (0x00007f79869ee000) libcrypto.so.1.1 => /lib64/libcrypto.so.1.1 (0x00007f7986516000) libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x00007f7986312000) libresolv.so.2 => /lib64/libresolv.so.2 (0x00007f79860fb000) libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f7985ed1000) libz.so.1 => /lib64/libz.so.1 (0x00007f7985cba000) libpcre2-8.so.0 => /lib64/libpcre2-8.so.0 (0x00007f7985a36000)
Use sscmagent in misc to start DPX (from the bin directory):
# ../misc/sscmagent start