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onnode changes. "ok" is an alias for "healthy", "con" is an alias for

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"connected".  Allow "rm" or "recmaster" to be a nodespec for the
recovery master. Better error handling for interaction with ctdb
client.

Signed-off-by: Martin Schwenke <martin@meltin.net>

(This used to be ctdb commit 05bdafed82106a0d8bfa53cd730eb3e1db68a51f)
This commit is contained in:
Martin Schwenke 2008-09-12 16:55:18 +10:00
parent 0013ec94de
commit 62a65ebc38
1 changed files with 36 additions and 12 deletions
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48
ctdb/tools/onnode
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@ -34,7 +34,8 @@ Usage: onnode [OPTION] ... <NODES> <COMMAND> ...
-p Run command in parallel on specified nodes.
-q Do not print node addresses (overrides -v).
-v Print node address even for a single node.
<NODES> "all", "healthy", "connected";
<NODES> "all", "ok" (or "healthy"), "con" (or "connected"),
"rm" (or "recmaster");
or a node number (0 base); or
list (comma separated) of <NODES>; or
range (hyphen separated) of node numbers.
@ -99,6 +100,17 @@ get_nth ()
done
}
echo_nth ()
{
local node=$(get_nth "$@")
if [ -n "$node" ] ; then
echo $node
else
echo "${prog}: \"node ${n}\" does not exist" >&2
exit 1
fi
}
parse_nodespec ()
{
# Subshell avoids hacks to restore $IFS.
@ -107,7 +119,7 @@ parse_nodespec ()
for i in $1 ; do
case "$i" in
*-*) seq "${i%-*}" "${i#*-}" 2>/dev/null || invalid_nodespec ;;
all|healthy|connected) echo "$i" ;;
all|ok|healthy|con|connected|rm|recmaster) echo "$i" ;;
*)
[ $i -gt -1 ] 2>/dev/null || invalid_nodespec
echo $i
@ -125,10 +137,10 @@ get_nodes_with_status ()
local bits
case "$status" in
healthy)
ok|healthy)
bits="0:0:0:0"
;;
connected)
con|connected)
bits="0:[0-1]:[0-1]:[0-1]"
;;
*)
@ -136,7 +148,11 @@ get_nodes_with_status ()
esac
if [ -z "$ctdb_status_output" ] ; then
ctdb_status_output=$(ctdb -Y status)
ctdb_status_output=$(ctdb -Y status 2>/dev/null)
if [ $? -ne 0 ] ; then
echo "${prog}: unable to get status of CTDB nodes" >&2
exit 1
fi
ctdb_status_output="${ctdb_status_output#* }"
fi
@ -158,6 +174,7 @@ get_nodes_with_status ()
echo $nodes
}
ctdb_recmaster=""
get_nodes ()
{
[ -f "$CTDB_NODES_FILE" ] || CTDB_NODES_FILE=/etc/ctdb/nodes
@ -170,17 +187,24 @@ get_nodes ()
case "$n" in
all)
echo $all_nodes ;;
healthy|connected)
get_nodes_with_status "$all_nodes" "$n"
ok|healthy|con|connected)
get_nodes_with_status "$all_nodes" "$n" || exit 1
;;
*)
local node=$(get_nth $n $all_nodes)
if [ -n "$node" ] ; then
echo $node
rm|recmaster)
if [ -z "$ctdb_recmaster" ] ; then
ctdb_recmaster=$(ctdb recmaster 2>/dev/null)
[ $? -eq 0 ] || ctdb_recmaster=""
fi
if [ -n "$ctdb_recmaster" ] ; then
echo_nth "$ctdb_recmaster" $all_nodes
else
echo "${prog}: \"node ${n}\" does not exist" >&2
echo "${prog}: No recmaster available" >&2
exit 1
fi
;;
*)
echo_nth $n $all_nodes
esac
done