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roles/dhcpcd: Disable device management module

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Today I realized that `dhcpcd` has been logging several hundred thousand
of these messages every second:

    libudev: received NULL device

This was causing both `dhcpcd` and `systemd-journald` to consume 100%
CPU.

I am not entirely sure what a "device management" module is in the
context of `dhcpcd`, but it does not seem to be required. Setting the
`nodev` option in `dhcpcd.conf` suppresses the messages, and seems to
have no effect on the operation of the daemon.
This commit is contained in:
Dustin
2018-07-18 20:27:05 -05:00
parent c88ee8bd99
commit da2d73b676
2 changed files with 6 additions and 0 deletions
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1
roles/dhcpcd/defaults/main.yml
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@@ -11,3 +11,4 @@ dhcpcd_noipv4ll: false
dhcpcd_noipv4: false dhcpcd_noipv4: false
dhcpcd_noipv6rs: false dhcpcd_noipv6rs: false
dhcpcd_interfaces: [] dhcpcd_interfaces: []
dhcpcd_nodev: false

5
roles/dhcpcd/templates/dhcpcd.conf.j2
View File

@@ -1,5 +1,10 @@
# A sample configuration for dhcpcd. # A sample configuration for dhcpcd.
# See dhcpcd.conf(5) for details. # See dhcpcd.conf(5) for details.
{% if dhcpcd_nodev %}
# Disable device management to avoid "libudev: received NULL device" log spam
nodev
{% endif %}
# Allow users of this group to interact with dhcpcd via the control socket. # Allow users of this group to interact with dhcpcd via the control socket.
{% if dhcpcd_controlgroup is defined %} {% if dhcpcd_controlgroup is defined %}