first commit

scripts/mon_conn

@@ -0,0 +1,51 @@
+#!/bin/bash
+
+export LANG=en_US.UTF-8
+ADDR_FILE="$(dirname $0)/conn.list"
+LOG_PATH="/var/log/monitor"
+LOG_NAME="conn"
+INTERVAL=60
+
+function Init {
+    local self_count=$(pgrep -cx "$(basename $0)")
+    [ 0 -eq $? ] || exit 1
+    [ 1 -eq $self_count ] || exit 1
+    mkdir -p $LOG_PATH || exit 1
+}
+
+function Log {
+    local msg="$1"
+    local log_time="$(date +'%F %T')"
+    local log_file="$LOG_PATH/$LOG_NAME-${log_time% *}.log"
+    echo "$log_time $msg" >> $log_file
+    cd $LOG_PATH && ls ${LOG_NAME}-* 2>/dev/null \
+        | head -n -7 | xargs rm -f
+}
+
+function CountAddrConn {
+    local addr=$1
+    local server="${addr%:*}"
+    local port="${addr#*:}"
+    local count=0
+    if [ 'localhost' = "$server" ]; then
+        count=$(ss -anpt | awk '{print $4}' \
+            | grep -c ":$port$")
+    else
+        count=$(ss -anpt | awk '{print $5}' \
+            | grep -c "$addr$")
+    fi
+    echo "$server $port $count"
+}
+
+function Main {
+    local addr=
+    sleep $INTERVAL
+    for addr in $(cat $ADDR_FILE); do
+        Log "$(CountAddrConn $addr)"
+    done
+}
+
+# start
+Init
+Main
+