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fix backup IO stats: use /proc/$$/io instead of /proc/self/io

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/proc/self/io inside $(awk ...) resolves to the awk subprocess PID,
not the parent bash shell. Use $$ (bash PID) to read the correct
process IO counters.
This commit is contained in:
Viktor Barzin 2026-03-23 12:33:52 +02:00
parent 0a294a30a6
commit a95d434ff1
6 changed files with 28 additions and 28 deletions
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8
stacks/vault/main.tf
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@ -267,8 +267,8 @@ resource "kubernetes_cron_job_v1" "vault_backup" {
args = [join("", [
"set -eu; ",
"_t0=$(date +%s); ",
"_rb0=$(awk '/^read_bytes/{print $2}' /proc/self/io 2>/dev/null || echo 0); ",
"_wb0=$(awk '/^write_bytes/{print $2}' /proc/self/io 2>/dev/null || echo 0); ",
"_rb0=$(awk '/^read_bytes/{print $2}' /proc/$$/io 2>/dev/null || echo 0); ",
"_wb0=$(awk '/^write_bytes/{print $2}' /proc/$$/io 2>/dev/null || echo 0); ",
"export VAULT_ADDR=http://vault-active.vault.svc.cluster.local:8200 && ",
"export VAULT_TOKEN=$(cat /vault/token/vault-root-token) && ",
"TIMESTAMP=$(date +%Y%m%d-%H%M%S) && ",
@ -276,8 +276,8 @@ resource "kubernetes_cron_job_v1" "vault_backup" {
"find /backup -name '*.db' -mtime +30 -delete && ",
"echo \"Backup done: vault-raft-$TIMESTAMP.db\" && ls -lh /backup/ && ",
"_dur=$(( $(date +%s) - _t0 )); ",
"_rb1=$(awk '/^read_bytes/{print $2}' /proc/self/io 2>/dev/null || echo 0); ",
"_wb1=$(awk '/^write_bytes/{print $2}' /proc/self/io 2>/dev/null || echo 0); ",
"_rb1=$(awk '/^read_bytes/{print $2}' /proc/$$/io 2>/dev/null || echo 0); ",
"_wb1=$(awk '/^write_bytes/{print $2}' /proc/$$/io 2>/dev/null || echo 0); ",
"echo '=== Backup IO Stats ==='; ",
"echo \"duration: $${_dur}s\"; ",
"echo \"read: $(( (_rb1 - _rb0) / 1048576 )) MiB\"; ",