Bug 1808004 - On Baremetal platform CRI-O often binds its streaming port on unsuitable addresses
Summary: On Baremetal platform CRI-O often binds its streaming port on unsuitable add...
Alias: None
Product: OpenShift Container Platform
Classification: Red Hat
Component: Machine Config Operator
Version: 4.3.0
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
: 4.3.z
Assignee: Antoni Segura Puimedon
QA Contact: Marius Cornea
Depends On: 1807998
TreeView+ depends on / blocked
Reported: 2020-02-27 16:07 UTC by Antoni Segura Puimedon
Modified: 2020-03-10 23:54 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of: 1807998
Last Closed: 2020-03-10 23:54:20 UTC
Target Upstream Version:

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Github openshift machine-config-operator pull 1510 0 None closed Bug 1808004: [release-4.3] CRI-O to set stream address in ctrl plane 2020-03-10 10:39:55 UTC
Red Hat Product Errata RHBA-2020:0676 0 None None None 2020-03-10 23:54:30 UTC

Description Antoni Segura Puimedon 2020-02-27 16:07:16 UTC
+++ This bug was initially created as a clone of Bug #1807998 +++

Description of problem:
On Baremetal, and specially on IPv6 deploymnets, CRI-O's default setting of stream-address="" makes it bind to whichever address. That means that it can easily end up on the provisioning network.

How reproducible: Often

Steps to Reproduce:
1. Trigger a baremetal deployment
2. ssh to the different nodes
3. sudo ss -lptn | grep crio

Actual results:
Binds to provisioning network or some address not in the control plane.

Expected results:
Should be bound to a non VIP address on the control plane network (non-deprecated, non-link-local IPv6 address when IPv6 deployment).

Additional info:
You can check if crio got a stream address specified with a short command like in this example:

[core@master-0 ~]$ cat "/proc/$(pgrep crio)/cmdline" | xargs -0 echo
/usr/bin/crio --stream-address=fd2e:6f44:5dd8:c956::14 --enable-metrics=true --metrics-port=9537

Comment 3 Marius Cornea 2020-02-29 02:57:18 UTC
[root@master-0 core]# ip a s dev enp5s0
3: enp5s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 52:54:00:9a:be:33 brd ff:ff:ff:ff:ff:ff
    inet6 fd2e:6f44:5dd8:c956::5/128 scope global nodad deprecated noprefixroute 
       valid_lft forever preferred_lft 0sec
    inet6 fd2e:6f44:5dd8:c956::122/128 scope global dynamic noprefixroute 
       valid_lft 2944sec preferred_lft 2944sec
    inet6 fe80::5054:ff:fe9a:be33/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever

[root@master-0 core]# ps axu | grep /usr/bin/crio
root        3060  4.2  0.6 3151408 218676 ?      Ssl  00:29   6:18 /usr/bin/crio --stream-address=fd2e:6f44:5dd8:c956::122 --enable-metrics=true --metrics-port=9537

Comment 5 errata-xmlrpc 2020-03-10 23:54:20 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.


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