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fix migration script #143

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merged 2 commits into from
May 17, 2019
Merged

fix migration script #143

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127f0fa
fix migration script
May 17, 2019
37d5987
make script work on OSX
schallert May 17, 2019
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28 changes: 24 additions & 4 deletions scripts/migrate_etcd_0.1_0.2.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -2,9 +2,17 @@

set -exo pipefail

TMP=$(mktemp)

function cleanup() {
rm -f "$TMP"
}

trap cleanup EXIT

if [[ "$1" == "-h" || -z "$ETCD_NS" || -z "$ETCD_POD" || -z "$M3DB_NS" || -z "$M3DB_CLUSTER" ]]; then
echo "Script for migrating etcd data from m3db-operator 0.2 -> 0.3"
echo "Usage: ETCD_NS=<namespace> ETCD_POD=<pod> M3DB_NS=<namespace> M3DB_CLUSTER=<cluster_name> ./migrate_etcd_0.2_0.3.sh"
echo "Script for migrating etcd data from m3db-operator 0.1 -> 0.2"
echo "Usage: ETCD_NS=<namespace> ETCD_POD=<pod> M3DB_NS=<namespace> M3DB_CLUSTER=<cluster_name> ./migrate_etcd_0.1_0.2.sh"
exit 0
fi

Expand All @@ -19,5 +27,17 @@ fi
ENV="$NS/$CLUSTER"
echo "Copying namespace and placement data from env=default_env to env=$ENV"

kubectl exec -n "$ETCD_NS" "$ETCD_POD" -- env ETCDCTL_API=3 etcdctl get _sd.placement/default_env/m3db | kubectl exec -n "$ETCD_NS" "$ETCD_POD" -- env ETCDCTL_API=3 etcdctl put "_sd.placement/$ENV/m3db"
kubectl exec -n "$ETCD_NS" "$ETCD_POD" -- env ETCDCTL_API=3 etcdctl get _kv/default_env/m3db.node.namespaces | kubectl exec -n "$ETCD_NS" "$ETCD_POD" -- env ETCDCTL_API=3 etcdctl put "_kv/$ENV/m3db.node.namespaces"

# Put placement bytes (includes trailing newline) into TMP
kubectl exec -n "$ETCD_NS" "$ETCD_POD" -- env ETCDCTL_API=3 etcdctl get --print-value-only _sd.placement/default_env/m3db > "$TMP"

# Trim newline in a cross-platform (OSX + Linux) manner and put in new key
N=$(<"$TMP" wc -c)
N=$((N-1))
head -c "$N" "$TMP" | kubectl exec -i -n "$ETCD_NS" "$ETCD_POD" -- env ETCDCTL_API=3 etcdctl put "_sd.placement/$ENV/m3db"

# Repeat for namespaces
kubectl exec -n "$ETCD_NS" "$ETCD_POD" -- env ETCDCTL_API=3 etcdctl get --print-value-only _kv/default_env/m3db.node.namespaces > "$TMP"
N=$(<"$TMP" wc -c)
N=$((N-1))
head -c "$N" "$TMP" | kubectl exec -i -n "$ETCD_NS" "$ETCD_POD" -- env ETCDCTL_API=3 etcdctl put "_kv/$ENV/m3db.node.namespaces"