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https://github.com/Security-Onion-Solutions/securityonion.git
synced 2025-12-06 17:22:49 +01:00
69 lines
1.6 KiB
Bash
69 lines
1.6 KiB
Bash
#!/bin/bash
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source ./so-variables
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# Helper functions
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filter_unused_nics() {
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if [[ $MNIC ]]; then local grep_string="$MNIC\|bond0"; else local grep_string="bond0"; fi
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# If we call this function and NICs have already been assigned to the bond interface then add them to the grep search string
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if [[ $BNICS ]]; then
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grep_string="$grep_string"
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for BONDNIC in "${BNICS[@]}"; do
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grep_string="$grep_string\|$BONDNIC"
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done
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fi
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# Finally, set filtered_nics to any NICs we aren't using (and ignore interfaces that aren't of use)
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filtered_nics=$(ip link | grep -vwe "$grep_string" | awk -F: '$0 !~ "lo|vir|veth|br|docker|wl|^[^0-9]"{print $2}' | sed 's/ //')
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readarray -t filtered_nics <<< "$filtered_nics"
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nic_list=()
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for nic in "${filtered_nics[@]}"; do
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nic_list+=("$nic" "" "OFF")
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done
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export nic_list
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}
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calculate_useable_cores() {
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# Calculate reasonable core usage
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local cores_for_bro=$(( (num_cpu_cores/2) - 1 ))
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local lb_procs_round
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lb_procs_round=$(printf "%.0f\n" $cores_for_bro)
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if [ "$lb_procs_round" -lt 1 ]; then lb_procs=1; else lb_procs=$lb_procs_round; fi
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export lb_procs
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}
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set_defaul_log_size() {
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local percentage
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case $INSTALLTYPE in
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EVAL | HEAVYNODE)
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percentage=50
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;;
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*)
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percentage=80
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;;
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esac
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local disk_dir="/"
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if [ -d /nsm ]; then
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disk_dir="/nsm"
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fi
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local disk_size_1k
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disk_size_1k=$(df $disk_dir | grep -v "^Filesystem" | awk '{print $2}')
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local ratio="1048576"
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local disk_size_gb
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disk_size_gb=$( echo "$disk_size_1k" "$ratio" | awk '{print($1/$2)}' )
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log_size_limit=$( echo "$disk_size_gb" "$percentage" | awk '{printf("%.0f", $1 * ($2/100))}')
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export log_size_limit
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}
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