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ff_olsrd_watchdog: delete existing tunnels

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When OLSRd crashes, the old tunnels still exist.  This can lead to unexpected behaviour.
The tunnels to be removed start with "tnl_"

See freifunk-berlin/firmware#522

Signed-off-by: pmelange <isprotejesvalkata@gmail.com>
This commit is contained in:
pmelange 2018-04-23 22:24:39 +02:00 committed by pmelange
parent 82abf9add9
commit 5d0b720f8b
1 changed files with 9 additions and 0 deletions
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9
contrib/package/freifunk-common/files/usr/sbin/ff_olsr_watchdog
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@ -23,6 +23,15 @@ if fs.access("/var/run/olsrd.pid") or fs.access("/var/run/olsrd4.pid") then
if not wdgtime or ( systime - wdgtime ) > ( intv * 2 ) then if not wdgtime or ( systime - wdgtime ) > ( intv * 2 ) then
os.execute("logger -t 'OLSR watchdog' 'Process died - restarting!'") os.execute("logger -t 'OLSR watchdog' 'Process died - restarting!'")
local tnls = io.popen("ip tunnel show | cut -d : -f 1")
while true do
tnl = tnls:read("*line")
if tnl == nil then break end
if string.find(tnl, "tnl_") == 1 then
os.execute(string.format("logger -t 'OLSR watchdog' 'Deleting stale tunnel %s'", tnl))
os.execute(string.format("ip link del %s", tnl))
end
end
os.execute("/etc/init.d/olsrd restart") os.execute("/etc/init.d/olsrd restart")
end end
end end