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coreos-overlay: cease ForwardToConsole in journald

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This was introduced to assist users in troubleshooting on cloud
providers without an interactive console but with read-only access to
console output.

However, due to how journald implements the forwarding (synchronously)
it can have a dramatic impact on the overall logging performance.

Fixes https://github.com/coreos/bugs/issues/1162
This commit is contained in:
Vito Caputo 2016-03-08 07:46:10 -08:00
parent db40dd1ccc
commit 32bd5ca029
3 changed files with 2 additions and 3 deletions
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2
sdk_container/src/third_party/coreos-overlay/coreos-base/oem-azure/files/grub.cfg vendored
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@ -3,7 +3,7 @@
set oem_id="azure" set oem_id="azure"
# Azure only has a serial console. # Azure only has a serial console.
set linux_console="console=ttyS0,115200n8 earlyprintk=ttyS0,115200 systemd.journald.forward_to_console=yes" set linux_console="console=ttyS0,115200n8 earlyprintk=ttyS0,115200"
serial com0 --speed=115200 --word=8 --parity=no serial com0 --speed=115200 --word=8 --parity=no
terminal_input serial_com0 terminal_input serial_com0
terminal_output serial_com0 terminal_output serial_com0

2
sdk_container/src/third_party/coreos-overlay/coreos-base/oem-ec2-compat/files/grub-ec2.cfg vendored
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@ -4,4 +4,4 @@ set oem_id="ec2"
# Blacklist the Xen framebuffer module so it doesn't get loaded at boot # Blacklist the Xen framebuffer module so it doesn't get loaded at boot
# Disable `ens3` style names, so eth0 is used for both ixgbevf or xen. # Disable `ens3` style names, so eth0 is used for both ixgbevf or xen.
set linux_append="modprobe.blacklist=xen_fbfront net.ifnames=0 systemd.journald.forward_to_console=yes" set linux_append="modprobe.blacklist=xen_fbfront net.ifnames=0"

1
sdk_container/src/third_party/coreos-overlay/coreos-base/oem-gce/files/grub.cfg vendored
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@ -3,7 +3,6 @@
set oem_id="gce" set oem_id="gce"
# GCE only has a serial console. # GCE only has a serial console.
set linux_append="systemd.journald.forward_to_console=yes"
set linux_console="console=ttyS0,115200n8" set linux_console="console=ttyS0,115200n8"
serial com0 --speed=115200 --word=8 --parity=no serial com0 --speed=115200 --word=8 --parity=no
terminal_input serial_com0 terminal_input serial_com0