Why does pcsd fail to start on a RHEL 6 or 7 system managing a High Availability cluster if ipv6 is disabled?
Issue
- pcsd service fails to start if ipv6 is disabled.
- After starting pcsd, the command
service pcsd status
returns the messagepcsd dead but pid file exists
Environment
- Red Hat Enterprise Linux (RHEL) 6 or 7 with the High Availabililty Add On
- RHEL 6:
pcs
releases prior to0.9.123-9.el6_6.2
- RHEL 7:
pcs
releases prior to0.9.137-13.el7
- IPv6 is disabled on the host, either via
ipv6.disable=1
on the kernel cmdline, or by blacklisting theipv6
module, or through some other means.
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