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Add server tracker for server failover

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This commit is contained in:
Ycarus (Yannick Chabanois) 2020-05-20 10:03:51 +02:00
parent 34e3f74a97
commit f1cd264485
4 changed files with 212 additions and 30 deletions
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125
omr-tracker/files/bin/omr-tracker-server Executable file
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#!/bin/sh
# vim: set noexpandtab tabstop=4 shiftwidth=4 softtabstop=4 :
name=$0
basename="$(basename $0)"
_log() {
logger -p daemon.info -t "${basename}" "$@"
}
_ping_server() {
local host=$1
ret=$(ping \
-w "$OMR_TRACKER_TIMEOUT" \
-c 1 \
-q \
"${host}"
) && echo "$ret" | grep -sq " 0% packet loss" && {
server_ping=true
}
}
_check_server() {
local host=$1
local port=$2
local k=0
while [ "$server_ping" = false ] && [ "$k" -le "$retry" ]; do
ret=$(curl -4 \
--max-time "$OMR_TRACKER_TIMEOUT" \
-s \
-k \
"https://${host}:${port}/"
)
[ -n "$ret" ] && server_ping=true
k=$((k+1))
sleep "${intervaltries}"
done
}
_check_master() {
local name=$1
config_get master $1 master
config_get ip $1 ip
config_get port $1 port "65500"
[ "$master" = "1" ] && [ -n "$ip" ] && {
#_ping_server $ip
_check_server $ip $port
[ "$server_ping" = true ] && [ "$(uci -q get shadowsocks-libev.sss0.server | tr -d '\n')" != "$ip" ] && {
logger -t "OMR-Tracker-Server" "Master server up, set it back"
logger -t "OMR-Tracker-Server" "$(uci -q get shadowsocks-libev.sss0.server | tr -d '\n') - $ip"
uci -q batch <<-EOF >/dev/null
set shadowsocks-libev.sss0.server=$ip
commit shadowsocks-libev
set glorytun.vpn.host=$ip
commit glorytun
set dsvpn.vpn.host=$ip
commit dsvpn
set mlvpn.general.host=$ip
commit mlvpn
del openvpn.omr.remote
add_list openvpn.omr.remote=$ip
commit openvpn
EOF
/etc/init.d/shadowsocks-libev restart >/dev/null 2>/dev/null
/etc/init.d/glorytun restart >/dev/null 2>/dev/null
/etc/init.d/glorytun-udp restart >/dev/null 2>/dev/null
/etc/init.d/mlvpn restart >/dev/null 2>/dev/null
/etc/init.d/openvpn restart >/dev/null 2>/dev/null
/etc/init.d/dsvpn restart >/dev/null 2>/dev/null
}
break
}
}
_check_backup() {
local name=$1
config_get backup $1 backup
config_get ip $1 ip
config_get port $1 port
[ "$backup" = "1" ] && [ -n "$ip" ] && {
#_ping_server $ip
_check_server $ip $port
}
[ "$server_ping" = true ] && [ "$(uci -q get shadowsocks-libev.sss0.server | tr -d '\n')" = "$ip" ] && break
[ "$server_ping" = true ] && [ "$(uci -q get shadowsocks-libev.sss0.server | tr -d '\n')" != "$ip" ] && {
logger -t "OMR-Tracker-Server" "User backup server $1 ($ip)"
uci -q batch <<-EOF >/dev/null
set shadowsocks-libev.sss0.server=$ip
commit shadowsocks-libev
set glorytun.vpn.host=$ip
commit glorytun
set dsvpn.vpn.host=$ip
commit dsvpn
set mlvpn.general.host=$ip
commit mlvpn
del openvpn.omr.remote
add_list openvpn.omr.remote=$ip
commit openvpn
EOF
/etc/init.d/shadowsocks-libev restart >/dev/null 2>/dev/null
/etc/init.d/glorytun restart >/dev/null 2>/dev/null
/etc/init.d/glorytun-udp restart >/dev/null 2>/dev/null
/etc/init.d/mlvpn restart >/dev/null 2>/dev/null
/etc/init.d/openvpn restart >/dev/null 2>/dev/null
/etc/init.d/dsvpn restart >/dev/null 2>/dev/null
break
}
}
. /lib/functions.sh
timeout=${OMR_TRACKER_TIMEOUT:-5}
interval=${OMR_TRACKER_INTERVAL:-10}
intervaltries=${OMR_TRACKER_INTERVAL_TRIES:-2}
retry=${OMR_TRACKER_TRIES:-4}
while true; do
server_ping=false
config_load openmptcprouter
config_foreach _check_master server
[ "$server_ping" = false ] && {
config_foreach _check_backup server
}
sleep "${interval}"
done