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Saturday, August 17, 2019
About to update to RedHat Enterprise Linux or CentOS 7.7? Beware!
There's a couple of caveats before upgrading to RHEL / CentOS 7.7.
1: Upgrading to latest RHEL 7 PCP package pcp-4.3.2-2.el7 gives several issues.
During installation/upgrade of pcp-selinux:
Updating / installing...
1:pcp-selinux-4.3.2-2.el7 ################################# [100%]
Failed to resolve allow statement at /etc/selinux/targeted/tmp/modules/400/pcpupstream/cil:83
semodule: Failed!
Followed by lots of selinux errors logged.
Workaround is to install 7.7's selinux-policy first
yum update selinux-policy
or, if you've already updated,
yum reinstall pcp-selinux
Documented in RedHat Bugzilla entry 1714101
2: bind is updated from version 9.9 to 9.11. This breaks configurations in which the same zone file is defined in several views.
The solution is to use bind 9.11's "in-view xxx" in subsequent definitions of the same zone in different views.
The fix is described in detail here.