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| − | This [[:Category:HOWTO|HOWTO]] shows how OpenVZ [[hardware node]] | + | This [[:Category:HOWTO|HOWTO]] shows how OpenVZ [[hardware node]] administrator can see a processes belonging to the host system only, or to a particular [[VE]]. |
| − | administrator can see a processes belonging to the host system only, or to a | ||
| − | particular [[ | ||
== Problem == | == Problem == | ||
| − | From [[ | + | From [[VE0]] one can see all the processes running on the system; that includes all the processes of all [[VE]]s and the processes of the [[host system]] itself. Sometimes you just want to see the processes from the host system only. Sometimes you just want to see the processes from a particular VE. |
| − | includes all the processes of all [[ | ||
| − | [[host system]] itself. Sometimes you just want to see the processes from the host system only. Sometimes you just want to see the processes from a | ||
| − | particular | ||
There are many ways to achieve it. | There are many ways to achieve it. | ||
== Solutions == | == Solutions == | ||
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=== "Poor man's vzps in bash" === | === "Poor man's vzps in bash" === | ||
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# Usage: ./ovzps CTID [ps flags ...] | # Usage: ./ovzps CTID [ps flags ...] | ||
| − | function | + | function find_ve_pids(){ |
local pid | local pid | ||
| − | local | + | local myveid=$1 |
| − | local | + | local vepids= |
for pid in $ALLPIDS; do | for pid in $ALLPIDS; do | ||
[ -f /proc/$pid/status ] || continue | [ -f /proc/$pid/status ] || continue | ||
| − | + | veid=`grep envID /proc/$pid/status | awk -F: '{print $2}'` | |
| − | if [ ${ | + | if [ ${veid} = ${myveid} ]; then |
| − | + | vepids="$vepids $pid" | |
fi | fi | ||
done | done | ||
| − | echo "$ | + | echo "$vepids" |
} | } | ||
ALLPIDS=`ps -A -o pid --no-headers` | ALLPIDS=`ps -A -o pid --no-headers` | ||
| − | + | VEPIDS=`find_ve_pids $1` | |
shift | shift | ||
| − | if [ -n "${ | + | if [ -n "${VEPIDS}" ]; then |
| − | ps $* -p $ | + | ps $* -p $VEPIDS |
else | else | ||
exit 0 | exit 0 | ||
fi | fi | ||
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</pre> | </pre> | ||
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Take <code>vzprocps</code> tools from http://download.openvz.org/contrib/utils/. | Take <code>vzprocps</code> tools from http://download.openvz.org/contrib/utils/. | ||
These are usual <code>ps</code> and <code>top</code> utilities (named <code>vztop</code> and <code>vzps</code> to not conflict with the standard ones) with an <code>-E</code> option added. You can use <code>-E <i>CTID</i></code> option to limit the output to the selected CTID (use 0 for the host system), or just <code>-E</code> without an argument to just add CTID column to output. | These are usual <code>ps</code> and <code>top</code> utilities (named <code>vztop</code> and <code>vzps</code> to not conflict with the standard ones) with an <code>-E</code> option added. You can use <code>-E <i>CTID</i></code> option to limit the output to the selected CTID (use 0 for the host system), or just <code>-E</code> without an argument to just add CTID column to output. | ||
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== See also == | == See also == | ||
