Hi,
Did you try to run ldd the mi_opcua_pull binary?
I got the same issue on a Red Hat 6.x, looks like mi_opcua_pull is linked to a newer glibc than I have at least. Maybe try it on Red Hat 7.x?
[splunk@splunk Splunk_TA_opcua]$ ldd ./linux_x86_64/bin/mi_opcua_pull
./linux_x86_64/bin/mi_opcua_pull: /lib64/libc.so.6: version GLIBC_2.17' not found (required by ./linux_x86_64/bin/mi_opcua_pull)
./linux_x86_64/bin/mi_opcua_pull: /lib64/libc.so.6: version GLIBC_2.14' not found (required by ./linux_x86_64/bin/mi_opcua_pull)
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