262 lines
14 KiB
Bash
262 lines
14 KiB
Bash
#!/bin/sh
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# Checks for deploy/uninstall.sh. Run it as: sh deploy/uninstall_test.sh
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#
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# The script is sourced with FELIS_UNINSTALL_SOURCED=1, every host path pointed into a
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# scratch directory, and the commands that would change the host (systemctl, k3s, nft,
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# firewall-cmd, runuser, docker, userdel) replaced by stubs that log their arguments.
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set -u
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US="${1:-$(dirname "$0")/uninstall.sh}"
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[ -f "$US" ] || { echo "no such script: $US"; exit 1; }
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fails=0
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expect() { # label needle haystack
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case "$3" in
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*"$2"*) echo "PASS $1" ;;
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*) echo "FAIL $1: expected <$2> in:"; echo "$3"; fails=$((fails + 1)) ;;
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esac
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}
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refute() { # label needle haystack
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case "$3" in
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*"$2"*) echo "FAIL $1: did not expect <$2> in:"; echo "$3"; fails=$((fails + 1)) ;;
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*) echo "PASS $1" ;;
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esac
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}
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root="$(mktemp -d)"
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trap 'rm -rf "$root"' EXIT
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# fresh_host lays out what an install leaves: units, state, /opt/felis, the host binary, a
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# k3s with its uninstaller and a volume, a tunnel config and its credentials.
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fresh_host() {
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rm -rf "$root/h"
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mkdir -p "$root/h/units" "$root/h/etc" "$root/h/data/db-backups" "$root/h/opt/velocity" \
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"$root/h/bin" "$root/h/storage/pvc-1_minecraft_world-a-0" "$root/h/cf"
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for u in felis-db-backup.timer felis-db-backup.service felis-velocity.service felis-postgres-firewall.service; do
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printf '[Unit]\n' > "$root/h/units/$u"
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done
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printf '[Service]\nExecStart=/usr/local/bin/cloudflared --config %s tunnel run\n' "$root/h/etc/cloudflared.yml" \
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> "$root/h/units/cloudflared-felis.service"
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printf 'tunnel: abc\ncredentials-file: %s\n' "$root/h/cf/abc.json" > "$root/h/etc/cloudflared.yml"
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printf '{}\n' > "$root/h/cf/abc.json"
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printf 'bind = "0.0.0.0:25577"\n' > "$root/h/opt/velocity/velocity.toml"
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for f in secrets.env felis.host.toml bootstrap.done system-server-images velocity.fingerprint; do
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printf 'x\n' > "$root/h/etc/$f"
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done
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printf 'world\n' > "$root/h/storage/pvc-1_minecraft_world-a-0/level.dat"
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for b in felis k3s k3s-killall.sh k3s-uninstall.sh; do
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printf '#!/bin/sh\necho "RUN %s $*" >> "%s"\n' "$b" "$root/calls" > "$root/h/bin/$b"
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chmod +x "$root/h/bin/$b"
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done
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cat > "$root/h/hba.conf" <<'EOF'
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# BEGIN FELIS MANAGED HBA
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# Felis rules must precede distro defaults such as 127.0.0.1 ident.
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host felis felis 127.0.0.1/32 scram-sha-256
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# END FELIS MANAGED HBA
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local all all peer
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host all all 127.0.0.1/32 ident
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EOF
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: > "$root/calls"
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}
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# run_uninstall <namespaces> <args...>: runs main with the stubs; <namespaces> is what
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# `kubectl get namespaces` answers, or "down" for a k3s that does not answer.
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run_uninstall() {
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ns="$1"; shift
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NS="$ns" ROOT="$root" STATE_DIR="$root/h/etc" DATA_DIR="$root/h/data" HOST_BIN="$root/h/bin/felis" \
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OPT_DIR="$root/h/opt" UNIT_DIR="$root/h/units" K3S_BIN_DIR="$root/h/bin" \
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K3S_STORAGE="$root/h/storage" K3S_REGISTRIES="$root/h/registries.yaml" \
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CLOUDFLARED_BIN="$root/h/no-cloudflared" FELIS_UNINSTALL_SOURCED=1 bash -c '
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set -Eeuo pipefail
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. "$0"
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calls="$ROOT/calls"
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id() { if [ "${1:-}" = -u ]; then echo 0; else echo "ID $*" >> "$calls"; fi; }
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systemctl() {
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echo "SYSTEMCTL $*" >> "$calls"
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case "$*" in "is-active --quiet firewalld") return 1 ;; esac
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return 0
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}
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kube() {
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echo "KUBE $*" >> "$calls"
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case "$*" in
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"get namespaces"*) [ "$NS" = down ] && return 1; printf "%s\n" $NS ;;
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"get pv"*) printf "pvc-1 minecraft\npvc-9 other\n" ;;
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esac
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}
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nft() { echo "NFT $*" >> "$calls"; return 1; }
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runuser() {
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shift 3
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case "$*" in
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*"SHOW hba_file"*) echo "$ROOT/h/hba.conf" ;;
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*)
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sql="$(cat)"
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case "$sql" in
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# What the felis role still holds: PG_HELD, one line each; PG_CHECK=fail for a
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# server that refuses the query.
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*pg_shdepend*)
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echo "PSQL-CHECK" >> "$calls"
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[ "${PG_CHECK:-}" = fail ] && { echo "psql: error: connection refused" >&2; return 2; }
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[ -z "${PG_HELD:-}" ] || printf "%s\n" "$PG_HELD" ;;
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*) echo "PSQL $* $sql" >> "$calls" ;;
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esac ;;
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esac
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}
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docker() { echo "DOCKER $*" >> "$calls"; }
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userdel() { echo "USERDEL $*" >> "$calls"; }
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uname() { echo testhost; }
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main "$@"' "$US" "$@" 2>&1
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}
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# --- keep-data, a cluster that runs only Felis -------------------------------------------
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fresh_host
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out="$(run_uninstall "default kube-system felis minecraft felis-build" --yes)"
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calls="$(cat "$root/calls")"
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expect "keep-data takes a final bundle first" "RUN felis db backup -config $root/h/etc/felis.host.toml -label manual" "$calls"
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expect "a Felis-only cluster is removed with k3s's uninstaller" "RUN k3s-uninstall.sh" "$calls"
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expect "the pods are stopped before the volumes move" "RUN k3s-killall.sh" "$calls"
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kept="$(ls "$root/h/data/retained" 2>/dev/null)"
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expect "the volumes are set aside before k3s deletes them" "k3s-storage-" "$kept"
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[ -f "$root/h/data/retained/$kept/pvc-1_minecraft_world-a-0/level.dat" ] \
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&& echo "PASS a world survives the uninstall" \
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|| { echo "FAIL the world did not survive: $(ls -R "$root/h/data")"; fails=$((fails + 1)); }
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[ -f "$root/h/etc/secrets.env" ] && [ -f "$root/h/etc/felis.host.toml" ] \
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&& echo "PASS the secrets and felis.toml stay" \
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|| { echo "FAIL keep-data removed the secrets"; fails=$((fails + 1)); }
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[ ! -e "$root/h/etc/bootstrap.done" ] && [ ! -e "$root/h/etc/velocity.fingerprint" ] \
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&& echo "PASS the markers of the removed install go, so a reinstall starts fresh" \
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|| { echo "FAIL bootstrap.done or the proxy fingerprint was left"; fails=$((fails + 1)); }
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refute "keep-data leaves the database alone" "DROP DATABASE" "$calls"
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[ ! -e "$root/h/opt" ] && [ ! -e "$root/h/bin/felis" ] \
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&& echo "PASS /opt/felis and the host binary are removed" \
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|| { echo "FAIL /opt/felis or the host binary is still there"; fails=$((fails + 1)); }
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[ -z "$(ls "$root/h/units")" ] && echo "PASS every Felis unit file is removed" \
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|| { echo "FAIL units left: $(ls "$root/h/units")"; fails=$((fails + 1)); }
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expect "the timers are disabled" "SYSTEMCTL disable --now felis-db-backup.timer" "$calls"
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expect "the velocity user is removed" "USERDEL felis-velocity" "$calls"
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expect "the run ends pointing at the reinstall steps" "Reinstall on top of kept data" "$out"
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# --- a failed final bundle stops everything ------------------------------------------------
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fresh_host
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printf '#!/bin/sh\necho "RUN felis $*" >> "%s"\nexit 1\n' "$root/calls" > "$root/h/bin/felis"
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out="$(run_uninstall "default felis minecraft" --yes)"
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expect "a failed bundle is fatal" "the final database bundle failed, so nothing was removed" "$out"
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[ -d "$root/h/opt" ] && [ -f "$root/h/units/felis-velocity.service" ] \
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&& echo "PASS nothing is removed when the bundle fails" \
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|| { echo "FAIL the uninstall went on after the bundle failed"; fails=$((fails + 1)); }
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run_uninstall "default felis minecraft" --yes --no-backup >/dev/null
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[ ! -d "$root/h/opt" ] && echo "PASS --no-backup goes on without one" \
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|| { echo "FAIL --no-backup did not remove anything"; fails=$((fails + 1)); }
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# --- a shared cluster --------------------------------------------------------------------
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fresh_host
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out="$(run_uninstall "default kube-system felis minecraft felis-build shop" --yes)"
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calls="$(cat "$root/calls")"
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refute "a cluster that runs something else keeps k3s" "RUN k3s-uninstall.sh" "$calls"
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expect "the reason names the other namespace" "shop" "$out"
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expect "Felis's volumes are retained before their claims go" 'KUBE patch pv pvc-1 -p {"spec":{"persistentVolumeReclaimPolicy":"Retain"}}' "$calls"
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refute "a volume of another namespace is not touched" "patch pv pvc-9" "$calls"
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expect "Felis's namespaces are deleted" "KUBE delete namespace felis minecraft felis-build" "$calls"
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expect "the CRD is deleted" "KUBE delete crd minecraftservers.felis.lolicon.best" "$calls"
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out="$(fresh_host; run_uninstall down --yes)"
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expect "a k3s that does not answer stops the run" "k3s does not answer" "$out"
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fresh_host
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run_uninstall down --yes --keep-k3s >/dev/null
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calls="$(cat "$root/calls")"
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refute "--keep-k3s never runs k3s's uninstaller" "RUN k3s-uninstall.sh" "$calls"
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# --- purge -------------------------------------------------------------------------------
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fresh_host
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out="$(run_uninstall "default felis minecraft" --purge --yes)"
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calls="$(cat "$root/calls")"
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refute "purge takes no bundle" "db backup" "$calls"
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expect "purge asks what the role holds first" "PSQL-CHECK" "$calls"
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expect "purge drops the database" "DROP DATABASE IF EXISTS felis;" "$calls"
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expect "purge drops the role" "DROP ROLE IF EXISTS felis;" "$calls"
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expect "purge puts listen_addresses back" "ALTER SYSTEM RESET listen_addresses;" "$calls"
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[ ! -e "$root/h/etc" ] && [ ! -e "$root/h/data" ] && echo "PASS purge removes /etc/felis and /var/lib/felis" \
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|| { echo "FAIL purge left state behind"; fails=$((fails + 1)); }
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[ ! -e "$root/h/cf/abc.json" ] && echo "PASS purge removes the tunnel's credentials file" \
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|| { echo "FAIL the tunnel credentials are still there"; fails=$((fails + 1)); }
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[ ! -e "$root/h/data/retained" ] && echo "PASS purge does not set the volumes aside" \
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|| { echo "FAIL purge kept the volumes"; fails=$((fails + 1)); }
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hba="$(cat "$root/h/hba.conf")"
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refute "the Felis block leaves pg_hba.conf" "FELIS MANAGED" "$hba"
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expect "the distro's own rules stay" "host all all 127.0.0.1/32 ident" "$hba"
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case "$hba" in
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"local all all peer"*) echo "PASS no blank line is left where the block was" ;;
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*) echo "FAIL pg_hba.conf starts with: $(printf '%s' "$hba" | head -n 1)"; fails=$((fails + 1)) ;;
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esac
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expect "purge cleans Docker's build cache" "DOCKER builder prune -af" "$calls"
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# --- a purge DROP ROLE would refuse -------------------------------------------------------
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# The VM drill: `felis db pgint` had left felis_pgint owned by felis, the purge removed the
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# units and k3s, then stopped at DROP ROLE with half the host gone.
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untouched() { # label
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[ -d "$root/h/opt" ] && [ -f "$root/h/units/felis-velocity.service" ] && [ -d "$root/h/etc" ] \
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&& ! grep -q "k3s-uninstall.sh\|DROP DATABASE\|SYSTEMCTL disable" "$root/calls" \
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&& echo "PASS $1" \
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|| { echo "FAIL $1: $(cat "$root/calls")"; fails=$((fails + 1)); }
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}
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fresh_host
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out="$(PG_HELD="database felis_pgint (owned)
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objects in database shop (privileges)" run_uninstall "default felis minecraft" --purge --yes)"
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expect "a purge the role cannot survive is refused" "the felis role still holds database felis_pgint (owned); objects in database shop (privileges)" "$out"
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expect "with the way to hand the database over" "ALTER DATABASE <name> OWNER TO postgres" "$out"
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untouched "nothing is removed when DROP ROLE would fail"
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fresh_host
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out="$(PG_HELD="database felis_pgint (owned)" CONFIRM_TTY="$root/no-tty/x" run_uninstall "default felis minecraft" --purge)"
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expect "the check comes before the plan and the prompt" "the felis role still holds database felis_pgint" "$out"
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refute "so nobody confirms a purge that cannot finish" "this will remove" "$out"
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fresh_host
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out="$(PG_CHECK=fail run_uninstall "default felis minecraft" --purge --yes)"
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expect "a server that cannot be asked stops the purge" "could not ask PostgreSQL what the felis role still holds, so nothing was removed: psql: error: connection refused" "$out"
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untouched "nothing is removed when the check cannot run"
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fresh_host
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PG_HELD="database felis_pgint (owned)" run_uninstall "default felis minecraft" --yes >/dev/null
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calls="$(cat "$root/calls")"
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refute "keep-data drops no role, so it asks nothing" "PSQL-CHECK" "$calls"
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expect "and goes on" "RUN k3s-uninstall.sh" "$calls"
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# --- the pieces read before they are removed ---------------------------------------------
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fresh_host
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lib() { STATE_DIR="$root/h/etc" OPT_DIR="$root/h/opt" UNIT_DIR="$root/h/units" FELIS_UNINSTALL_SOURCED=1 \
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bash -c '. "$0"; '"$1" "$US"; }
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expect "the game port comes from velocity.toml" "25577" "$(lib game_port)"
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expect "FELIS_GAME_PORT overrides it" "25599" "$(FELIS_GAME_PORT=25599 lib game_port)"
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rm "$root/h/opt/velocity/velocity.toml"
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expect "without velocity.toml the port is the default" "25565" "$(lib game_port)"
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printf '[Service]\nExecStart=/usr/local/bin/felis nano -listen 10.0.0.5:8082 -config x\n' > "$root/h/units/felis-nano.service"
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expect "the nano port comes from its unit" "8082" "$(lib nano_port)"
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expect "the tunnel config comes from the cloudflared unit" "$root/h/etc/cloudflared.yml" "$(lib tunnel_config)"
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rm "$root/h/units/cloudflared-felis.service"
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expect "without the unit the tunnel config is the default path" "$root/h/etc/cloudflared.yml" "$(lib tunnel_config)"
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out="$(FELIS_UNINSTALL_SOURCED=1 bash -c '. "$0"; parse_args --bogus' "$US" 2>&1)"
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expect "an unknown option is refused" "unknown option: --bogus" "$out"
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printf 'nope\n' > "$root/tty"
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out="$(CONFIRM_TTY="$root/tty" FELIS_UNINSTALL_SOURCED=1 bash -c '. "$0"; confirm; echo WENT ON' "$US" 2>&1)"
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expect "any answer but the word stops it" "not confirmed; nothing was changed" "$out"
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printf 'yes\n' > "$root/tty"
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out="$(CONFIRM_TTY="$root/tty" FELIS_UNINSTALL_SOURCED=1 bash -c '. "$0"; confirm; echo WENT ON' "$US" 2>&1)"
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expect "yes goes on" "WENT ON" "$out"
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out="$(CONFIRM_TTY="$root/tty" FELIS_UNINSTALL_SOURCED=1 bash -c '. "$0"; PURGE=1; confirm; echo WENT ON' "$US" 2>&1)"
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expect "a purge wants the word purge" "not confirmed" "$out"
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out="$(CONFIRM_TTY="$root/no-tty/x" FELIS_UNINSTALL_SOURCED=1 bash -c '. "$0"; confirm; echo WENT ON' "$US" 2>&1)"
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expect "with no terminal it asks for --yes" "no terminal to confirm on; re-run with --yes" "$out"
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# Every unit the installer writes is one the uninstaller removes: a timer left behind
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# keeps firing a felis binary that is gone.
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units="$(awk '/^FELIS_UNITS=\(/ { f = 1; next } f && /^\)/ { f = 0 } f' "$US")"
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for u in $(sed -n 's|^[A-Z_]*="/etc/systemd/system/\([^"]*\)"$|\1|p' "$(dirname "$US")/bootstrap.sh"); do
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expect "the uninstaller removes $u" " $u" " $(printf '%s' "$units" | tr '\n' ' ')"
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done
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if [ "$fails" -eq 0 ]; then
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echo "ALL PASS"
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else
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echo "$fails FAILED"
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fi
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exit "$fails"
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