tripleo-common/healthcheck/common.sh

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#!/bin/bash
: ${HEALTHCHECK_CURL_MAX_TIME:=10}
: ${HEALTHCHECK_CURL_USER_AGENT:=curl-healthcheck}
: ${HEALTHCHECK_CURL_WRITE_OUT:='\n%{http_code} %{remote_ip}:%{remote_port} %{time_total} seconds\n'}
: ${HEALTHCHECK_CURL_OUTPUT:='/dev/null'}
healthcheck_curl () {
export NSS_SDB_USE_CACHE=no
curl -g -k -q -s -S --fail -o "${HEALTHCHECK_CURL_OUTPUT}" \
--max-time "${HEALTHCHECK_CURL_MAX_TIME}" \
--user-agent "${HEALTHCHECK_CURL_USER_AGENT}" \
--write-out "${HEALTHCHECK_CURL_WRITE_OUT}" \
"$@" || return 1
}
healthcheck_port () {
process=$1
shift 1
args=$@
ports=${args// /|}
pids=$(pgrep -d '|' -f $process)
ss -ntp | grep -qE ":($ports).*,pid=($pids),"
}
healthcheck_listen () {
process=$1
shift 1
args=$@
ports=${args// /|}
pids=$(pgrep -d '|' -f $process)
ss -lnp | grep -qE ":($ports).*,pid=($pids),"
}
healthcheck_socket () {
process=$1
socket=$2
# lsof truncate command name to 15 characters and this behaviour
# cannot be disabled
if [ ${#process} -gt 15 ] ; then
process=${process:0:15}
fi
lsof -Fc -Ua $socket | grep -q "c$process"
}
healthcheck_file_modification () {
file_path=$1
limit_seconds=$2
# if the file doesn't exist, return 1
if [ ! -f $file_path ]; then
echo "${file_path} does not exist for file modification check"
return 1
fi
curr_time=$(date +%s)
last_mod=$(stat -c '%Y' $file_path)
limit_epoch=$(( curr_time-limit_seconds ))
if [ ${limit_epoch} -gt ${last_mod} ]; then
return 1
fi
}
get_config_val () {
crudini --get "$1" "$2" "$3" 2> /dev/null || echo "$4"
}
# apachectl -S is slightly harder to parse and doesn't say if the vhost is serving SSL
get_url_from_vhost () {
vhost_file=$1
server_name=$(awk '/ServerName/ {print $2}' $vhost_file)
ssl_enabled=$(awk '/SSLEngine/ {print $2}' $vhost_file)
bind_port=$(grep -h "<VirtualHost .*>" $vhost_file | sed 's/<VirtualHost .*:\(.*\)>/\1/')
wsgi_alias=$(awk '/WSGIScriptAlias/ {print $2}' $vhost_file)
proto=http
if [[ $ssl_enabled == "on" ]]; then
proto=https
fi
if [[ $wsgi_alias != "/" ]]; then
wsgi_alias="${wsgi_alias}/"
fi
echo ${proto}://${server_name}:${bind_port}${wsgi_alias}
}