openstack/devstack
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doc: prefix journalctl examples with sudo

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In a devstack environment you likely need to use sudo
to run the journalctl command, so this adds that to
the examples.

Change-Id: Ibe6b71285a3014e80e06a50130f18bfbdb4ff3ab
This commit is contained in:
Matt Riedemann 2017-09-22 20:51:38 -04:00
parent 672ac22ab3
commit 66a14df49e
1 changed files with 5 additions and 5 deletions
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10
doc/source/systemd.rst
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@ -94,25 +94,25 @@ query facilities. We'll start with some common options.
Follow logs for a specific service:: Follow logs for a specific service::
journalctl -f --unit devstack@n-cpu.service sudo journalctl -f --unit devstack@n-cpu.service
Following logs for multiple services simultaneously:: Following logs for multiple services simultaneously::
journalctl -f --unit devstack@n-cpu.service --unit devstack@n-cond.service sudo journalctl -f --unit devstack@n-cpu.service --unit devstack@n-cond.service
or you can even do wild cards to follow all the nova services:: or you can even do wild cards to follow all the nova services::
journalctl -f --unit devstack@n-* sudo journalctl -f --unit devstack@n-*
Use higher precision time stamps:: Use higher precision time stamps::
journalctl -f -o short-precise --unit devstack@n-cpu.service sudo journalctl -f -o short-precise --unit devstack@n-cpu.service
By default, journalctl strips out "unprintable" characters, including By default, journalctl strips out "unprintable" characters, including
ASCII color codes. To keep the color codes (which can be interpreted by ASCII color codes. To keep the color codes (which can be interpreted by
an appropriate terminal/pager - e.g. ``less``, the default):: an appropriate terminal/pager - e.g. ``less``, the default)::
journalctl -a --unit devstack@n-cpu.service sudo journalctl -a --unit devstack@n-cpu.service
When outputting to the terminal using the default pager, long lines When outputting to the terminal using the default pager, long lines
appear to be truncated, but horizontal scrolling is supported via the appear to be truncated, but horizontal scrolling is supported via the