openstack/devstack
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doc: Describe running a command as a separate group

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Some commands must be run as a separate group to work. Users can use the
'sg' tool to do this.

This may be assumed knowledge for many users but it's helpful to note in
this, the definitive resource for DevStack's systemd integration.

Change-Id: I271c1d21b44fa972c152780c1caa01c21c265159
Signed-off-by: Stephen Finucane <sfinucan@redhat.com>
This commit is contained in:
Stephen Finucane 2018-05-31 14:49:59 +01:00
parent 36b69c0b02
commit 43f25c0fc3
1 changed files with 13 additions and 0 deletions
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13
doc/source/systemd.rst
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@ -152,6 +152,19 @@ Invoke the command manually::
/usr/local/bin/nova-scheduler --config-file /etc/nova/nova.conf /usr/local/bin/nova-scheduler --config-file /etc/nova/nova.conf
Some executables, such as :program:`nova-compute`, will need to be executed
with a particular group. This will be shown in the systemd unit file::
sudo systemctl cat devstack@n-cpu.service | grep Group
::
Group = libvirt
Use the :program:`sg` tool to execute the command as this group::
sg libvirt -c '/usr/local/bin/nova-compute --config-file /etc/nova/nova-cpu.conf'
Using remote-pdb Using remote-pdb
---------------- ----------------