mirror of
https://github.com/ceph/ceph-csi.git
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09fac4d9e2
While deploying Rook, there can be issues when the environment is not
completely settled yet. On occasion the 1st kubectl command fails with
The connection to the server ... was refused - did you specify the right host or port?
This would set the 'ret' variable to a non-zero value, before the next
retry of the kubectl command is done. In case the kubectl command
succeeds, the 'ret' variable still contains the old non-zero value, and
kubectl_retry returns the incorrect result.
By setting the 'ret' variable to 0 before calling kubectl again, this
problem is prevented.
Signed-off-by: Niels de Vos <ndevos@redhat.com>
254 lines
7.9 KiB
Bash
Executable File
254 lines
7.9 KiB
Bash
Executable File
#!/bin/bash -E
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ROOK_VERSION=${ROOK_VERSION:-"v1.2.7"}
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ROOK_DEPLOY_TIMEOUT=${ROOK_DEPLOY_TIMEOUT:-300}
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ROOK_URL="https://raw.githubusercontent.com/rook/rook/${ROOK_VERSION}/cluster/examples/kubernetes/ceph"
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ROOK_BLOCK_POOL_NAME=${ROOK_BLOCK_POOL_NAME:-"newrbdpool"}
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ROOK_CEPH_CLUSTER_VERSION="v14.2.10"
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KUBECTL_RETRY=5
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KUBECTL_RETRY_DELAY=10
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trap log_errors ERR
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# log_errors is called on exit (see 'trap' above) and tries to provide
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# sufficient information to debug deployment problems
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function log_errors() {
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# enable verbose execution
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set -x
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kubectl get nodes
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kubectl -n rook-ceph get events
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kubectl -n rook-ceph describe pods
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kubectl -n rook-ceph logs -l app=rook-ceph-operator
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kubectl -n rook-ceph get CephClusters -oyaml
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kubectl -n rook-ceph get CephFilesystems -oyaml
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kubectl -n rook-ceph get CephBlockPools -oyaml
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# this function should not return, a fatal error was caught!
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exit 1
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}
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rook_version() {
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echo "${ROOK_VERSION#v}" | cut -d'.' -f"${1}"
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}
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kubectl_retry() {
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local retries=0 action="${1}" ret=0 stdout stderr
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shift
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# temporary files for kubectl output
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stdout=$(mktemp rook-kubectl-stdout.XXXXXXXX)
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stderr=$(mktemp rook-kubectl-stderr.XXXXXXXX)
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while ! kubectl "${action}" "${@}" 2>"${stderr}" 1>"${stdout}"
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do
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# in case of a failure when running "create", ignore errors with "AlreadyExists"
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if [ "${action}" == 'create' ]
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then
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# count lines in stderr that do not have "AlreadyExists"
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ret=$(grep -cvw 'AlreadyExists' "${stderr}")
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if [ "${ret}" -eq 0 ]
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then
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# Success! stderr is empty after removing all "AlreadyExists" lines.
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break
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fi
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fi
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retries=$((retries+1))
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if [ ${retries} -eq ${KUBECTL_RETRY} ]
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then
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ret=1
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break
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fi
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# log stderr and empty the tmpfile
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cat "${stderr}" > /dev/stderr
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true > "${stderr}"
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echo "kubectl_retry ${*} failed, will retry in ${KUBECTL_RETRY_DELAY} seconds"
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sleep ${KUBECTL_RETRY_DELAY}
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# reset ret so that a next working kubectl does not cause a non-zero
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# return of the function
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ret=0
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done
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# write output so that calling functions can consume it
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cat "${stdout}" > /dev/stdout
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cat "${stderr}" > /dev/stderr
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rm -f "${stdout}" "${stderr}"
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return ${ret}
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}
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function deploy_rook() {
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kubectl_retry create -f "${ROOK_URL}/common.yaml"
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kubectl_retry create -f "${ROOK_URL}/operator.yaml"
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# find out the rook version to decide on the ceph cluster image to be used
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ROOK_MAJOR=$(rook_version 1)
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ROOK_MINOR=$(rook_version 2)
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if { [ "${ROOK_MAJOR}" -eq 1 ] && [ "${ROOK_MINOR}" -le 2 ]; }; then
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ROOK_CEPH_CLUSTER_VERSION_IMAGE_PATH="image: ceph/ceph:${ROOK_CEPH_CLUSTER_VERSION}"
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# upgrade ceph cluster version to 14.2.10 to support CephFS snapshot functionalities.
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TEMP_DIR="$(mktemp -d)"
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curl -o "${TEMP_DIR}"/cluster-test.yaml "${ROOK_URL}/cluster-test.yaml"
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sed -i "s|image.*|${ROOK_CEPH_CLUSTER_VERSION_IMAGE_PATH}|g" "${TEMP_DIR}"/cluster-test.yaml
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cat "${TEMP_DIR}"/cluster-test.yaml
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kubectl_retry create -f "${TEMP_DIR}/cluster-test.yaml"
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rm -rf "${TEMP_DIR}"
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else
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# add "mon_warn_on_pool_no_redundancy = false" to ceph.conf if missing
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# see https://github.com/rook/rook/pull/5925 for upstream status
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TEMP_DIR="$(mktemp -d)"
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curl -o "${TEMP_DIR}"/cluster-test.yaml "${ROOK_URL}/cluster-test.yaml"
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if ! grep -q mon_warn_on_pool_no_redundancy "${TEMP_DIR}"/cluster-test.yaml; then
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sed -i '/osd_pool_default_size =/a \ mon_warn_on_pool_no_redundancy = false' "${TEMP_DIR}"/cluster-test.yaml
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fi
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kubectl_retry create -f "${TEMP_DIR}/cluster-test.yaml"
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rm -rf "${TEMP_DIR}"
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fi
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kubectl_retry create -f "${ROOK_URL}/toolbox.yaml"
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kubectl_retry create -f "${ROOK_URL}/filesystem-test.yaml"
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kubectl_retry create -f "${ROOK_URL}/pool-test.yaml"
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# Check if CephCluster is empty
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if ! kubectl_retry -n rook-ceph get cephclusters -oyaml | grep 'items: \[\]' &>/dev/null; then
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check_ceph_cluster_health
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fi
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# Check if CephFileSystem is empty
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if ! kubectl_retry -n rook-ceph get cephfilesystems -oyaml | grep 'items: \[\]' &>/dev/null; then
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check_mds_stat
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fi
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# Check if CephBlockPool is empty
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if ! kubectl_retry -n rook-ceph get cephblockpools -oyaml | grep 'items: \[\]' &>/dev/null; then
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check_rbd_stat ""
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fi
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}
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function teardown_rook() {
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kubectl delete -f "${ROOK_URL}/pool-test.yaml"
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kubectl delete -f "${ROOK_URL}/filesystem-test.yaml"
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kubectl delete -f "${ROOK_URL}/toolbox.yaml"
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kubectl delete -f "${ROOK_URL}/cluster-test.yaml"
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kubectl delete -f "${ROOK_URL}/operator.yaml"
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kubectl delete -f "${ROOK_URL}/common.yaml"
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}
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function create_block_pool() {
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curl -o newpool.yaml "${ROOK_URL}/pool-test.yaml"
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sed -i "s/replicapool/$ROOK_BLOCK_POOL_NAME/g" newpool.yaml
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kubectl_retry create -f "./newpool.yaml"
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rm -f "./newpool.yaml"
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check_rbd_stat "$ROOK_BLOCK_POOL_NAME"
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}
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function delete_block_pool() {
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curl -o newpool.yaml "${ROOK_URL}/pool-test.yaml"
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sed -i "s/replicapool/$ROOK_BLOCK_POOL_NAME/g" newpool.yaml
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kubectl delete -f "./newpool.yaml"
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rm -f "./newpool.yaml"
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}
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function check_ceph_cluster_health() {
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for ((retry = 0; retry <= ROOK_DEPLOY_TIMEOUT; retry = retry + 5)); do
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echo "Wait for rook deploy... ${retry}s" && sleep 5
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CEPH_STATE=$(kubectl_retry -n rook-ceph get cephclusters -o jsonpath='{.items[0].status.state}')
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CEPH_HEALTH=$(kubectl_retry -n rook-ceph get cephclusters -o jsonpath='{.items[0].status.ceph.health}')
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echo "Checking CEPH cluster state: [$CEPH_STATE]"
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if [ "$CEPH_STATE" = "Created" ]; then
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if [ "$CEPH_HEALTH" = "HEALTH_OK" ]; then
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echo "Creating CEPH cluster is done. [$CEPH_HEALTH]"
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break
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fi
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fi
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done
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if [ "$retry" -gt "$ROOK_DEPLOY_TIMEOUT" ]; then
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echo "[Timeout] CEPH cluster not in a healthy state (timeout)"
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return 1
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fi
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echo ""
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}
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function check_mds_stat() {
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for ((retry = 0; retry <= ROOK_DEPLOY_TIMEOUT; retry = retry + 5)); do
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FS_NAME=$(kubectl_retry -n rook-ceph get cephfilesystems.ceph.rook.io -ojsonpath='{.items[0].metadata.name}')
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echo "Checking MDS ($FS_NAME) stats... ${retry}s" && sleep 5
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ACTIVE_COUNT=$(kubectl_retry -n rook-ceph get cephfilesystems myfs -ojsonpath='{.spec.metadataServer.activeCount}')
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ACTIVE_COUNT_NUM=$((ACTIVE_COUNT + 0))
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echo "MDS ($FS_NAME) active_count: [$ACTIVE_COUNT_NUM]"
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if ((ACTIVE_COUNT_NUM < 1)); then
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continue
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else
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if kubectl_retry -n rook-ceph get pod -l rook_file_system=myfs | grep Running &>/dev/null; then
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echo "Filesystem ($FS_NAME) is successfully created..."
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break
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fi
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fi
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done
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if [ "$retry" -gt "$ROOK_DEPLOY_TIMEOUT" ]; then
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echo "[Timeout] Failed to get ceph filesystem pods"
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return 1
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fi
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echo ""
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}
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function check_rbd_stat() {
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for ((retry = 0; retry <= ROOK_DEPLOY_TIMEOUT; retry = retry + 5)); do
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if [ -z "$1" ]; then
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RBD_POOL_NAME=$(kubectl_retry -n rook-ceph get cephblockpools -ojsonpath='{.items[0].metadata.name}')
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else
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RBD_POOL_NAME=$1
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fi
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echo "Checking RBD ($RBD_POOL_NAME) stats... ${retry}s" && sleep 5
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TOOLBOX_POD=$(kubectl_retry -n rook-ceph get pods -l app=rook-ceph-tools -o jsonpath='{.items[0].metadata.name}')
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TOOLBOX_POD_STATUS=$(kubectl_retry -n rook-ceph get pod "$TOOLBOX_POD" -ojsonpath='{.status.phase}')
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[[ "$TOOLBOX_POD_STATUS" != "Running" ]] && \
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{ echo "Toolbox POD ($TOOLBOX_POD) status: [$TOOLBOX_POD_STATUS]"; continue; }
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if kubectl_retry exec -n rook-ceph "$TOOLBOX_POD" -it -- rbd pool stats "$RBD_POOL_NAME" &>/dev/null; then
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echo "RBD ($RBD_POOL_NAME) is successfully created..."
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break
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fi
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done
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if [ "$retry" -gt "$ROOK_DEPLOY_TIMEOUT" ]; then
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echo "[Timeout] Failed to get RBD pool stats"
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return 1
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fi
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echo ""
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}
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case "${1:-}" in
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deploy)
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deploy_rook
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;;
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teardown)
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teardown_rook
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;;
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create-block-pool)
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create_block_pool
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;;
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delete-block-pool)
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delete_block_pool
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;;
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*)
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echo " $0 [command]
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Available Commands:
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deploy Deploy a rook
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teardown Teardown a rook
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create-block-pool Create a rook block pool
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delete-block-pool Delete a rook block pool
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" >&2
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;;
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esac
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