After converting from CentOS 8.4 to RHEL 8.4, the java command soft link is missing

[wuchuxiong]

Yesterday I converted the CentOS 8.4 to RHEL 8.4 successfully with convert2rhel command. But the java command soft link is missing after the convertion. My command is "convert2rhel --disable-submgr --enablerepo rhes84-baseos --enablerepo rhes84-appstream -y --no-rpm-va --debug". The convert log message doesn't complain about the openjdk. Actually the openjdk package is still there.

# rpm -qa|grep jdk
copy-jdk-configs-3.7-4.el8.noarch
java-1.8.0-openjdk-1.8.0.282.b08-4.el8.x86_64
java-1.8.0-openjdk-headless-1.8.0.282.b08-4.el8.x86_64

The java command exists as well.

# ls -l /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.282.b08-4.el8.x86_64/jre/bin/java
-rwxr-xr-x. 1 root root 11520 Feb 24  2021 /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.282.b08-4.el8.x86_64/jre/bin/java

But the java soft link is missing.

# which java
/usr/bin/which: no java in (/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/cdfwendy/bin:/cdfwendy/bin:/root/bin)

# alternatives --list
libnssckbi.so.x86_64    auto    /usr/lib64/pkcs11/p11-kit-trust.so
python                  auto    /usr/libexec/no-python
ifup                    auto    /usr/libexec/nm-ifup
ld                      auto    /usr/bin/ld.bfd
mkisofs                 auto    /usr/bin/genisoimage
print                   auto    /usr/bin/lpr.cups
xinputrc                auto    /etc/X11/xinit/xinput.d/ibus.conf
nmap                    auto    /usr/bin/ncat
python3                 auto    /usr/bin/python3.6
cifs-idmap-plugin       auto    /usr/lib64/cifs-utils/cifs_idmap_sss.so
libwbclient.so.0.15-64  auto    /usr/lib64/samba/wbclient/libwbclient.so.0.15

Before the convert, the java is showed in alternatives list as below.

# alternatives --list
libnssckbi.so.x86_64    auto    /usr/lib64/pkcs11/p11-kit-trust.so
python                  auto    /usr/libexec/no-python
ifup                    auto    /usr/libexec/nm-ifup
ld                      auto    /usr/bin/ld.bfd
mkisofs                 auto    /usr/bin/genisoimage
print                   auto    /usr/bin/lpr.cups
xinputrc                auto    /etc/X11/xinit/xinput.d/ibus.conf
nmap                    auto    /usr/bin/ncat
python3                 auto    /usr/bin/python3.6
cifs-idmap-plugin       auto    /usr/lib64/cifs-utils/cifs_idmap_sss.so
libwbclient.so.0.15-64  auto    /usr/lib64/samba/wbclient/libwbclient.so.0.15
java                    auto    /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.282.b08-4.el8.x86_64/jre/bin/java
jre_openjdk             auto    /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.282.b08-4.el8.x86_64/jre
jre_1.8.0               auto    /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.282.b08-4.el8.x86_64/jre
jre_1.8.0_openjdk       auto    /usr/lib/jvm/jre-1.8.0-openjdk-1.8.0.282.b08-4.el8.x86_64

Any suggestions are appreciated.

[bocekm]

Hi @wuchuxiong, thanks for the report. I believe it's this bug: https://bugzilla.redhat.com/show_bug.cgi?id=2032526. We may need to revisit the decision to close the bug.

As a workaround, running the following command suggested in https://bugzilla.redhat.com/show_bug.cgi?id=1976053#c1 should help:

# rpm -qa --scripts java-{1.8.0,11}-openjdk-{headless,devel} | sed -n '/postinstall/, /exit/{ /postinstall/! { /exit/ ! p} }' | sh

[wuchuxiong]

Thank you bocekm for the workaround. It looks good. I didn't apply it because I had applied a heavy workaround: uninstall the openjdk package and install it again.