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75 lines
2.0 KiB
75 lines
2.0 KiB
#!/bin/sh
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envnik=$(basename "${SQLAPI_ENVIRONMENT}" .js)
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if test "$1" = "config"; then
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echo "graph_title fd usage (${envnik})"
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cat <<"EOM"
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graph_vlabel number of file descriptors
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graph_category sqlapi
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graph_scale no
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procs.label Number of worker processes
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pgsql.label PostgreSQL connections (max)
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redis.label Redis connections (max)
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http.label Incoming http requests (max)
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nfd.label Total file descriptors (max)
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EOM
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exit 0
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fi
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if test x"$1" != x; then
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SQLAPI_ENVIRONMENT=$(cd $(dirname $0); pwd)/../../config/environments/${1}.js
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fi
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if test -z "$SQLAPI_ENVIRONMENT"; then
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echo "Usage: $0 [<environment>]" >&2
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echo " or: [SQLAPI_ENVIRONMENT=<environment>] $0" >&2
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exit 1
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fi
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http_port=$(echo "console.log(require('${SQLAPI_ENVIRONMENT}').node_port)" | node) || exit 1
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pgsql_port=$(echo "console.log(require('${SQLAPI_ENVIRONMENT}').db_port)" | node) || exit 1
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redis_port=$(echo "console.log(require('${SQLAPI_ENVIRONMENT}').redis_port)" | node) || exit 1
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pids=$(lsof -i :${http_port} | grep LISTEN | awk '{print $2}')
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nworkers=$(echo "${pids}" | wc -l)
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pids=$(echo "${pids}" | paste -sd ' ')
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if test -z "${pids}"; then
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echo "No processes found listening on tcp port '${http_port}'" >&2
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exit 1
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fi
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tmpreport="/tmp/checkfd.$$.txt"
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lsof -Pp $(echo "${pids}" | tr ' ' ',') > "${tmpreport}"
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maxdb=0
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maxredis=0
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maxhttp=0
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maxtot=0
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for pid in ${pids}; do
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cnt=$(grep "${pid}" "${tmpreport}" | grep ":${pgsql_port} " | wc -l);
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if test $cnt -gt $maxdb; then maxdb=$cnt; fi
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cnt=$(grep "${pid}" "${tmpreport}" | grep ":${redis_port} " | wc -l);
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if test $cnt -gt $maxredis; then maxredis=$cnt; fi
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cnt=$(grep "${pid}" "${tmpreport}" | grep ":${http_port}-" | grep -v "LISTEN" | wc -l);
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if test $cnt -gt $maxhttp; then maxhttp=$cnt; fi
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cnt=$(grep "${pid}" "${tmpreport}" | wc -l);
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if test $cnt -gt $maxtot; then maxtot=$cnt; fi
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done
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echo "procs.value ${nworkers}"
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echo "pgsql.value ${maxdb}"
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echo "redis.value ${maxredis}"
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echo "http.value ${maxhttp}"
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echo "nfd.value ${maxtot}"
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rm -f "${tmpreport}"
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