There is an issue on CloudLinux 6.8 and CentOS 6.8 servers with the nss package version numbered 3.21.0-8<\/strong>. In general, if you see either: In both cases, the fix that is being advised amounts to downgrading the nss packages to version 3.21.0-0.3<\/strong>. The older package is still in CloudLinux’s repositories, so this is easy.\u00a0Run the following command and check that you are going to 3.21.0-0.3 Then, check your work with the following command <\/p>\n CentOS is a bit more difficult, since everything just upgraded to CentOS 6.8 and the older package is not in the system repositories.<\/p>\n Create the file Then, run the following command and check that you are going to 3.21.0-0.3<\/strong> adding nss* to the end of the exclude=<\/strong> line like so<\/p>\n Check your work with the following command The Problem: There is an issue on CloudLinux 6.8 and CentOS 6.8 servers with the nss package version numbered 3.21.0-8. In general, if you see either: curl https:\/\/google.com > \/dev\/null Illegal instruction (core dumped) or rhn_check Illegal instruction (core dumped) In both cases, the fix that is being advised amounts to downgrading the nss packages… <\/p>\n
\ncurl https:\/\/google.com > \/dev\/null
\nIllegal instruction (core dumped)<\/code>
\nor
\nrhn_check
\nIllegal instruction (core dumped)<\/code><\/p>\n
\nThe instructions are different between CloudLinux and CentOS.
\n <\/p>\nCloudLinux<\/h3>\n
\nNSS_DISABLE_HW_GCM=1 yum downgrade nss nss-util nss-tools nss-sysinit<\/code>
\nThen edit the
\nvim \/etc\/yum.conf<\/code>
\nfile adding nss* to the end of the exclude= <\/strong>line like so<\/p>\nexclude=courier* dovecot* exim* filesystem httpd* mod_ssl* mydns* mysql* nsd* php* proftpd* pure-ftpd* spamassassin* squirrelmail* nss*
\n<\/code><\/p>\n
\ncurl https:\/\/google.com > \/dev\/null<\/code><\/p>\nCentOS<\/h3>\n
\ntouch \/etc\/yum.repos.d\/nss-fix.repo<\/code>
\nwith the following contents:
\n[nss-fix]
\nname=repository used solely to fix nss
\nbaseurl=http:\/\/vault.centos.org\/6.7\/updates\/x86_64\/
\nenabled=0
\nincludepkgs=nss*
\n#gpgcheck=1
\npriority=3<\/code><\/p>\n
\nyum --enablerepo=nss-fix downgrade nss nss-sysinit nss-util nss-tools<\/code>
\nNext, change <\/p>\nvim \/etc\/yum.conf <\/code><\/p>\nexclude=courier* dovecot* exim* filesystem httpd* mod_ssl* mydns* mysql* nsd* php* proftpd* pure-ftpd* spamassassin* squirrelmail* nss*
\n<\/code><\/p>\n
\ncurl https:\/\/google.com > \/dev\/null<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"