文件操作 - tcp_conn.conf
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文件: /usr/local/src/netdata/health/health.d/tcp_conn.conf
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# # ${tcp_max_connections} may be nan or -1 if the system # supports dynamic threshold for TCP connections. # In this case, the alarm will always be zero. # alarm: tcp_connections on: ipv4.tcpsock os: linux hosts: * calc: (${tcp_max_connections} > 0) ? ( ${connections} * 100 / ${tcp_max_connections} ) : 0 units: % every: 10s warn: $this > (($status >= $WARNING ) ? ( 60 ) : ( 80 )) crit: $this > (($status >= $CRITICAL) ? ( 80 ) : ( 90 )) delay: up 0 down 5m multiplier 1.5 max 1h info: the percentage of IPv4 TCP connections over the max allowed to: sysadmin
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