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::
journalctl -f --unit devstack@n-cpu.service
sudo journalctl -f --unit devstack@n-cpu.service
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::
journalctl -f --unit devstack@n-*
sudo journalctl -f --unit devstack@n-*
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
ASCII color codes. To keep the color codes (which can be interpreted by
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
appear to be truncated, but horizontal scrolling is supported via the