Red Hat Bugzilla – Bug 1278084
kernel logs (/dev/console) are not routed to /dev/ttyS0
Last modified: 2016-10-03 12:18:48 EDT
Description of problem: The kernel logs and logs from other facilities are routed to /dev/console (like echo "Hello world" > /dev/console), including the cloud-init. OpenStack is buffering the outputs to /dev/ttyS0 and can display the log for purpose of debugging for example, but the appliance is not configured so that the /dev/console writes are writing to /dev/ttyS0, but only to /dev/tty0 (terminal). Please set the kernel commandline so that the logs will go to the /dev/ttyS0. Version-Release number of selected component (if applicable): ManageIQ-devel-201510300944-3f219bbd63 How reproducible: always Steps to Reproduce: 1. boot the instance. In case of OpenStack boot: nova boot --image ManageIQ-devel-201510300944-3f219bbd63 --flavor m1.medium --key-name jhenner test --user-data test_data --nic net-id=bbc9a15a-4cc3-4310-b37c-6d439d9ef995 2. ssh to the appliance, execute "date > /dev/console" 3. nova console-log test Actual results: no output Expected results: kernel boot process and other logs + actual date Additional info:
Fix is to add this to the kernel cmdline console=tty0 console=ttyS0,115200n8
The above is not actually a complete fix. The init process is not writing to /dev/console for some reason. I have no idea why. I am systemd noob.
The other actions I did in order to display more info was to remove some configs like /etc/cloud/cloud.cfg.d/05_logging.cfg /etc/cloud/cloud.cfg.d/10_miq_logging.cfg and remove the rhgb and quiet from the kernel cmdline.
This bug was originally reported here: https://bugzilla.redhat.com/show_bug.cgi?id=1104230 but was blocked by: https://bugzilla.redhat.com/show_bug.cgi?id=1139262 Now that the blocking BZ, 1139262, has been resolved this BZ can be resolved by adding the following the the base-rhos.ks: -bootloader --location=mbr --driveorder=vda --append="crashkernel=auto rhgb quiet" +bootloader --location=mbr --driveorder=vda --append="crashkernel=auto rhgb quiet console=tty0 console=ttyS0,115200n8"
https://github.com/ManageIQ/manageiq-appliance-build/pull/100
New commit detected on ManageIQ/manageiq-appliance-build/master: https://github.com/ManageIQ/manageiq-appliance-build/commit/60416340f27e3c8f34276ad8eb6ec106c3bd9cb8 commit 60416340f27e3c8f34276ad8eb6ec106c3bd9cb8 Author: Joe VLcek <jvlcek@redhat.com> AuthorDate: Mon Feb 29 16:37:16 2016 -0500 Commit: Joe VLcek <jvlcek@redhat.com> CommitDate: Mon Feb 29 16:37:16 2016 -0500 Direct /dev/console to /dev/ttyS0 for openstack https://bugzilla.redhat.com/show_bug.cgi?id=1278084 kickstarts/base.ks.erb | 3 +-- kickstarts/partials/main/bootloader.ks.erb | 1 + 2 files changed, 2 insertions(+), 2 deletions(-) create mode 100644 kickstarts/partials/main/bootloader.ks.erb
New commit detected on cfme_productization/master: https://code.engineering.redhat.com/gerrit/gitweb?p=cfme_productization.git;a=commit;h=cd35c43ddf2ccd6588f94c99b6e3116d2d771d3f commit cd35c43ddf2ccd6588f94c99b6e3116d2d771d3f Merge: 09504cb 2bc09e2 Author: Jason Frey <jfrey@redhat.com> AuthorDate: Tue Mar 1 17:34:18 2016 -0500 Commit: Jason Frey <jfrey@redhat.com> CommitDate: Tue Mar 1 17:34:18 2016 -0500 Merge branch 'bz_1278084' into 'master' Direct /dev/console to /dev/ttyS0 for openstack https://bugzilla.redhat.com/show_bug.cgi?id=1278084 https://github.com/ManageIQ/manageiq-appliance-build/pull/100 See merge request !193 manageiq-appliance-build/productization/kickstarts/base.ks.erb | 3 +-- .../productization/kickstarts/partials/main/bootloader.ks.erb | 1 + 2 files changed, 2 insertions(+), 2 deletions(-)
New commit detected on cfme_productization/master: https://code.engineering.redhat.com/gerrit/gitweb?p=cfme_productization.git;a=commit;h=2bc09e2a1791d214c1a7d6ab5f2dc2ba58d9407b commit 2bc09e2a1791d214c1a7d6ab5f2dc2ba58d9407b Author: Joe VLcek <jvlcek@redhat.com> AuthorDate: Tue Mar 1 17:04:04 2016 -0500 Commit: Joe VLcek <jvlcek@redhat.com> CommitDate: Tue Mar 1 17:12:30 2016 -0500 Direct /dev/console to /dev/ttyS0 for openstack https://bugzilla.redhat.com/show_bug.cgi?id=1278084 https://github.com/ManageIQ/manageiq-appliance-build/pull/100 manageiq-appliance-build/productization/kickstarts/base.ks.erb | 3 +-- .../productization/kickstarts/partials/main/bootloader.ks.erb | 1 + 2 files changed, 2 insertions(+), 2 deletions(-) create mode 100644 manageiq-appliance-build/productization/kickstarts/partials/main/bootloader.ks.erb
Verified with 5604 on 10.16.6.70
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. https://access.redhat.com/errata/RHBA-2016:1348