(List
  (Com {[LIT_CHARS set]} {[LIT_CHARS -o]} {[LIT_CHARS errexit]}  )
  (Com {[LIT_CHARS set]} {[LIT_CHARS -o]} {[LIT_CHARS nounset]}  )
  (Com {[LIT_CHARS set]} {[LIT_CHARS -o]} {[LIT_CHARS pipefail]}  )
  (If
    (DBracket {B2 BINARY_STRING_NOT_EQUAL {[DQ [VarSub KUBERNETES_PROVIDER test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS gce]}]]} {[DQ [LIT_CHARS gce]]}})
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "!!! "][VarSub 1][LIT_CHARS " only works on GCE"]]}
        <
        (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND ">&"> 1),
        >
      )
      (Com {[LIT_CHARS exit]} {[LIT_CHARS 1]}      )
    )
  )
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('KUBE_ROOT', {[ComSub (Com {[LIT_CHARS dirname]} {[DQ [VarSub BASH_SOURCE]]})] [LIT_CHARS /../..]})])
  (Com {[LIT_CHARS source]} {[DQ [VarSub KUBE_ROOT][LIT_CHARS /cluster/kube-util.sh]]}  )
  (FunctionDef usage []
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "!!! EXPERIMENTAL !!!"]]}      )
      (Com {[LIT_CHARS echo]} {[DQ ]}      )
      (Com {[LIT_CHARS echo]} {[DQ [VarSub 0][LIT_CHARS " [-M|-N|-P] -l -o | <version number or publication>"]]}      )
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "  Upgrades master and nodes by default"]]}      )
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "  -M:  Upgrade master only"]]}      )
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "  -N:  Upgrade nodes only"]]}      )
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "  -P:  Node upgrade prerequisites only (create a new instance template)"]]}      )
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "  -o:  Use os distro sepcified in KUBE_NODE_OS_DISTRIBUTION for new nodes. Options include 'debian' or 'gci'"]]}      )
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "  -l:  Use local(dev) binaries"]]}      )
      (Com {[LIT_CHARS echo]} {[DQ ]}      )
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "  Version number or publication is either a proper version number">]}      )
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "  (e.g. \"v1.0.6\", \"v1.2.0-alpha.1.881+376438b69c7612\") or a version">]}      )
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "  publication of the form <bucket>/<version> (e.g. \"release/stable\",">]}      )
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "  \"ci/latest-1\").  Some common ones are:">]}      )
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "    - \"release/stable\"">]}      )
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "    - \"release/latest\"">]}      )
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "    - \"ci/latest\"">]}      )
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "  See the docs on getting builds for more information about version publication.">]}      )
      (Com {[LIT_CHARS echo]} {[DQ ]}      )
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "(... Fetching current release versions ...)"]]}      )
      (Com {[LIT_CHARS echo]} {[DQ ]}      )
      (= scope=<EAssignScope.LOCAL 0> flags=0 words=[{[LIT_CHARS release_stable]}] bindings=[])
      (= scope=<EAssignScope.LOCAL 0> flags=0 words=[{[LIT_CHARS release_latest]}] bindings=[])
      (= scope=<EAssignScope.LOCAL 0> flags=0 words=[{[LIT_CHARS ci_latest]}] bindings=[])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('release_stable', {[ComSub (Com {[LIT_CHARS gsutil]} {[LIT_CHARS cat]} {[LIT_CHARS gs] [LIT_OTHER ":"] [LIT_CHARS //kubernetes-release/release/stable.txt]})]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('release_latest', {[ComSub (Com {[LIT_CHARS gsutil]} {[LIT_CHARS cat]} {[LIT_CHARS gs] [LIT_OTHER ":"] [LIT_CHARS //kubernetes-release/release/latest.txt]})]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('ci_latest', {[ComSub (Com {[LIT_CHARS gsutil]} {[LIT_CHARS cat]} {[LIT_CHARS gs] [LIT_OTHER ":"] [LIT_CHARS //kubernetes-release-dev/ci/latest.txt]})]})])
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "Right now, versions are as follows:"]]}      )
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "  release/stable: "][VarSub 0][LIT_CHARS " "][VarSub release_stable]]}      )
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "  release/latest: "][VarSub 0][LIT_CHARS " "][VarSub release_latest]]}      )
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "  ci/latest:      "][VarSub 0][LIT_CHARS " "][VarSub ci_latest]]}      )
    )
  )
  (FunctionDef upgrade-master []
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "== Upgrading master to '"][VarSub SERVER_BINARY_TAR_URL][LIT_CHARS "'. Do not interrupt, deleting master instance. =="]]}      )
      (Com {[LIT_CHARS get-kubeconfig-basicauth]}      )
      (Com {[LIT_CHARS get-kubeconfig-bearertoken]}      )
      (Com {[LIT_CHARS detect-master]}      )
      (Com {[LIT_CHARS parse-master-env]}      )
      (Com {[LIT_CHARS gcloud]} {[LIT_CHARS compute]} {[LIT_CHARS instances]} {[LIT_CHARS delete]} {[LIT_CHARS --project]} {[DQ [VarSub PROJECT]]} {[LIT_CHARS --quiet]} {[LIT_CHARS --zone]} {[DQ [VarSub ZONE]]} {[DQ [VarSub MASTER_NAME]]}      )
      (Com {[LIT_CHARS create-master-instance]} {[DQ [VarSub MASTER_NAME][LIT_CHARS -ip]]}      )
      (Com {[LIT_CHARS wait-for-master]}      )
    )
  )
  (FunctionDef wait-for-master []
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "== Waiting for new master to respond to API requests =="]]}      )
      (= scope=<EAssignScope.LOCAL 0> flags=0 words=[{[LIT_CHARS curl_auth_arg]}] bindings=[])
      (If
        (DBracket {B1 UNARY_STRING_n {[VarSub KUBE_BEARER_TOKEN test_op=VS_TEST_COLON_HYPHEN {}]}})
        (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('curl_auth_arg', {[Array {[LIT_CHARS -H]} {[DQ [LIT_CHARS "Authorization: Bearer "][VarSub KUBE_BEARER_TOKEN]]}]})])
        (DBracket {B1 UNARY_STRING_n {[VarSub KUBE_PASSWORD test_op=VS_TEST_COLON_HYPHEN {}]}})
        (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('curl_auth_arg', {[Array {[LIT_CHARS --user]} {[DQ [VarSub KUBE_USER][LIT_CHARS ":"][VarSub KUBE_PASSWORD]]}]})])
        (ElseTrue)
        (List
          (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "can't get auth credentials for the current master"]]}          )
          (Com {[LIT_CHARS exit]} {[LIT_CHARS 1]}          )
        )
      )
      (While
        (Com {[LIT_CHARS curl]} {[LIT_CHARS --insecure]} {[DQ [VarSub curl_auth_arg bracket_op=(Index {A Atom NODE_ARITH_WORD {AS_OP_AT "@"}})]]} {[LIT_CHARS --max-time]} {[LIT_CHARS 5]} {[LIT_CHARS --fail]} {[LIT_CHARS --output]} {[LIT_CHARS /dev/null]} {[LIT_CHARS --silent]} {[DQ [LIT_CHARS "https://"][VarSub KUBE_MASTER_IP][LIT_CHARS /healthz]]}        )
        (List
          (Com {[LIT_CHARS printf]} {[DQ [LIT_CHARS .]]}          )
          (Com {[LIT_CHARS sleep]} {[LIT_CHARS 2]}          )
        )
      )
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "== Done =="]]}      )
    )
  )
  (FunctionDef prepare-upgrade []
    (List
      (Com {[LIT_CHARS ensure-temp-dir]}      )
      (Com {[LIT_CHARS detect-project]}      )
      (Com {[LIT_CHARS detect-node-names]}      )
      (Com {[LIT_CHARS write-cluster-name]}      )
      (Com {[LIT_CHARS tars_from_version]}      )
    )
  )
  (FunctionDef get-node-env []
    (Com {[LIT_CHARS gcloud]} {[LIT_CHARS compute]} {[LIT_CHARS --project]} {[VarSub PROJECT]} {[LIT_CHARS ssh]} {[LIT_CHARS --zone]} {[VarSub ZONE]} {[VarSub NODE_NAMES bracket_op=(Index {A Atom NODE_ARITH_WORD {[AS_NUM_LITERAL 0]}})]} {[LIT_CHARS --command]} {[DQ [LIT_CHARS "curl --fail --silent -H 'Metadata-Flavor: Google' "][LIT_CHARS "      'http://metadata/computeMetadata/v1/instance/attributes/kube-env'"]]}
      <
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
      >
    )
  )
  (FunctionDef get-node-os []
    (Com {[LIT_CHARS gcloud]} {[LIT_CHARS compute]} {[LIT_CHARS ssh]} {[DQ [VarSub 1]]} {[LIT_CHARS --project]} {[DQ [VarSub PROJECT]]} {[LIT_CHARS --zone]} {[DQ [VarSub ZONE]]} {[LIT_CHARS --command]} {[DQ [LIT_CHARS "cat /etc/os-release | grep "][\ LIT_ESCAPED_CHAR "\\\""][LIT_CHARS "^ID=.*"][\ LIT_ESCAPED_CHAR "\\\""][LIT_CHARS " | cut -c 4-"]]}    )
  )
  (FunctionDef upgrade-nodes []
    (List
      (Com {[LIT_CHARS prepare-node-upgrade]}      )
      (Com {[LIT_CHARS do-node-upgrade]}      )
    )
  )
  (FunctionDef setup-base-image []
    (If
      (DBracket {B2 BINARY_STRING_EQUAL {[DQ [VarSub env_os_distro]]} {[DQ [LIT_CHARS false]]}})
      (List
        (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "== Ensuring that new Node base OS image matched the existing Node base OS image"]]}        )
        (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('NODE_OS_DISTRIBUTION', {[ComSub (Com {[LIT_CHARS get-node-os]} {[DQ [VarSub NODE_NAMES bracket_op=(Index {A Atom NODE_ARITH_WORD {[AS_NUM_LITERAL 0]}})]]})]})])
        (Com {[LIT_CHARS source]} {[DQ [VarSub KUBE_ROOT][LIT_CHARS /cluster/gce/][VarSub NODE_OS_DISTRIBUTION][LIT_CHARS /node-helper.sh]]}        )
        (Com {[LIT_CHARS set-node-image]}        )
      )
    )
  )
  (FunctionDef prepare-node-upgrade []
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "== Preparing node upgrade (to "][VarSub KUBE_VERSION][LIT_CHARS "). =="]]}
        <
        (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND ">&"> 1),
        >
      )
      (Com {[LIT_CHARS setup-base-image]}      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('SANITIZED_VERSION', {[ComSub (Pipeline (Com {[LIT_CHARS echo]} {[VarSub KUBE_VERSION]}) (Com {[LIT_CHARS sed]} {[SQ <LIT_CHARS "s/[\\.\\+]/-/g">]}) )]})])
      (= scope=<EAssignScope.LOCAL 0> flags=0 words=[] bindings=[('scope_flags', {[SQ ]})])
      (If
        (Com {[LIT_DBRACKET_LIKE "["]} {[LIT_CHARS -n]} {[DQ [VarSub NODE_SCOPES]]} {[LIT_DBRACKET_LIKE "]"]}        )
        (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('scope_flags', {[DQ [LIT_CHARS "--scopes "][VarSub NODE_SCOPES]]})])
        (ElseTrue)
        (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('scope_flags', {[DQ [LIT_CHARS --no-scopes]]})])
      )
      (= scope=<EAssignScope.LOCAL 0> flags=0 words=[] bindings=[('node_env', {[ComSub (Com {[LIT_CHARS get-node-env]})]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('KUBELET_TOKEN', {[ComSub (Com {[LIT_CHARS get-env-val]} {[DQ [VarSub node_env]]} {[DQ [LIT_CHARS KUBELET_TOKEN]]})]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('KUBE_PROXY_TOKEN', {[ComSub (Com {[LIT_CHARS get-env-val]} {[DQ [VarSub node_env]]} {[DQ [LIT_CHARS KUBE_PROXY_TOKEN]]})]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('CA_CERT_BASE64', {[ComSub (Com {[LIT_CHARS get-env-val]} {[DQ [VarSub node_env]]} {[DQ [LIT_CHARS CA_CERT]]})]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('EXTRA_DOCKER_OPTS', {[ComSub (Com {[LIT_CHARS get-env-val]} {[DQ [VarSub node_env]]} {[DQ [LIT_CHARS EXTRA_DOCKER_OPTS]]})]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('KUBELET_CERT_BASE64', {[ComSub (Com {[LIT_CHARS get-env-val]} {[DQ [VarSub node_env]]} {[DQ [LIT_CHARS KUBELET_CERT]]})]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('KUBELET_KEY_BASE64', {[ComSub (Com {[LIT_CHARS get-env-val]} {[DQ [VarSub node_env]]} {[DQ [LIT_CHARS KUBELET_KEY]]})]})])
      (Com {[LIT_CHARS write-node-env]}      )
      (= scope=<EAssignScope.LOCAL 0> flags=0 words=[] bindings=[('template_name', {[ComSub (Com {[LIT_CHARS get-template-name-from-version]} {[VarSub SANITIZED_VERSION]})]})])
      (Com {[LIT_CHARS create-node-instance-template]} {[DQ [VarSub template_name]]}      )
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "Instance template name: "][VarSub template_name]]}      )
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "== Finished preparing node upgrade (to "][VarSub KUBE_VERSION][LIT_CHARS "). =="]]}
        <
        (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND ">&"> 1),
        >
      )
    )
  )
  (FunctionDef do-node-upgrade []
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "== Upgrading nodes to "][VarSub KUBE_VERSION][LIT_CHARS ". =="]]}
        <
        (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND ">&"> 1),
        >
      )
      (= scope=<EAssignScope.LOCAL 0> flags=0 words=[] bindings=[('template_name', {[ComSub (Com {[LIT_CHARS get-template-name-from-version]} {[VarSub SANITIZED_VERSION]})]})])
      (= scope=<EAssignScope.LOCAL 0> flags=0 words=[] bindings=[('old_templates', {[Array ]})])
      (= scope=<EAssignScope.LOCAL 0> flags=0 words=[] bindings=[('updates', {[Array ]})])
      (For group [{[VarSub INSTANCE_GROUPS bracket_op=(Index {A Atom NODE_ARITH_WORD {AS_OP_AT "@"}})]}])
        (List
          (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('old_templates+', {[Array {[ComSub (AndOr OP_OR_IF (Com {[LIT_CHARS gcloud]} {[LIT_CHARS compute]} {[LIT_CHARS instance-groups]} {[LIT_CHARS managed]} {[LIT_CHARS list]} {[LIT_CHARS --project] [LIT_DBRACKET_LIKE "="] [DQ [VarSub PROJECT]]} {[LIT_CHARS --zones] [LIT_DBRACKET_LIKE "="] [DQ [VarSub ZONE]]} {[LIT_CHARS --regexp] [LIT_DBRACKET_LIKE "="] [DQ [VarSub group]]} {[LIT_CHARS --format] [LIT_DBRACKET_LIKE "="] [SQ <LIT_CHARS "value(instanceTemplate)">]}) (Com {[LIT_CHARS true]}) )]}]})])
          (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "== Calling rolling-update for "][VarSub group][LIT_CHARS ". =="]]}
            <
            (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND ">&"> 1),
            >
          )
          (AndOr OP_AND_IF
            (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('update', {[ComSub (Com redirects=[(DescriptorRedirectNode target={[LIT_CHARS 1]} <REDIR_GREATAND "2>&"> 2)]{[LIT_CHARS gcloud]} {[LIT_CHARS alpha]} {[LIT_CHARS compute]} {[LIT_CHARS rolling-updates]} {[LIT_CHARS --project] [LIT_DBRACKET_LIKE "="] [DQ [VarSub PROJECT]]} {[LIT_CHARS --zone] [LIT_DBRACKET_LIKE "="] [DQ [VarSub ZONE]]} {[LIT_CHARS start]} {[LIT_CHARS --group] [LIT_DBRACKET_LIKE "="] [DQ [VarSub group]]} {[LIT_CHARS --template] [LIT_DBRACKET_LIKE "="] [DQ [VarSub template_name]]} {[LIT_CHARS --instance-startup-timeout] [LIT_DBRACKET_LIKE "="] [LIT_CHARS 300s]} {[LIT_CHARS --max-num-concurrent-instances] [LIT_DBRACKET_LIKE "="] [LIT_CHARS 1]} {[LIT_CHARS --max-num-failed-instances] [LIT_DBRACKET_LIKE "="] [LIT_CHARS 0]} {[LIT_CHARS --min-instance-update-time] [LIT_DBRACKET_LIKE "="] [LIT_CHARS 0s]})]})])
            (AndOr OP_OR_IF
              (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('update_rc', {[VarSub ?]})])
              (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('update_rc', {[VarSub ?]})])
            )
          )
          (If
            (DBracket {B2 BINARY_STRING_NOT_EQUAL {[DQ [VarSub update_rc]]} {[LIT_CHARS 0]}})
            (List
              (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "== FAILED to start rolling-update: =="]]}              )
              (Com {[LIT_CHARS echo]} {[DQ [VarSub update]]}              )
              (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "  This may be due to a preexisting rolling-update;"]]}              )
              (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "  see https://github.com/kubernetes/kubernetes/issues/33113 for details."]]}              )
              (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "  All rolling-updates in project "][VarSub PROJECT][LIT_CHARS " zone "][VarSub ZONE][LIT_CHARS ":"]]}              )
              (AndOr OP_OR_IF
                (Com {[LIT_CHARS gcloud]} {[LIT_CHARS alpha]} {[LIT_CHARS compute]} {[LIT_CHARS rolling-updates]} {[LIT_CHARS --project] [LIT_DBRACKET_LIKE "="] [DQ [VarSub PROJECT]]} {[LIT_CHARS --zone] [LIT_DBRACKET_LIKE "="] [DQ [VarSub ZONE]]} {[LIT_CHARS list]}                )
                (Com {[LIT_CHARS true]}                )
              )
              (Com {[LIT_CHARS return]} {[VarSub update_rc]}              )
            )
          )
          (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('id', {[ComSub (Pipeline (Com {[LIT_CHARS echo]} {[DQ [VarSub update]]}) (Com {[LIT_CHARS grep]} {[DQ [LIT_CHARS Started]]}) (Com {[LIT_CHARS cut]} {[LIT_CHARS -d]} {[SQ <LIT_CHARS />]} {[LIT_CHARS -f]} {[LIT_CHARS 11]}) (Com {[LIT_CHARS cut]} {[LIT_CHARS -d]} {[SQ <LIT_CHARS "]">]} {[LIT_CHARS -f]} {[LIT_CHARS 1]}) )]})])
          (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('updates+', {[Array {[DQ [VarSub id]]}]})])
        )
      )
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "== Waiting for Upgrading nodes to be finished. =="]]}
        <
        (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND ">&"> 1),
        >
      )
      (For update [{[VarSub updates bracket_op=(Index {A Atom NODE_ARITH_WORD {AS_OP_AT "@"}})]}])
        (While
          (Com {[LIT_CHARS true]}          )
          (List
            (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('result', {[ComSub (AndOr OP_OR_IF (Com {[LIT_CHARS gcloud]} {[LIT_CHARS alpha]} {[LIT_CHARS compute]} {[LIT_CHARS rolling-updates]} {[LIT_CHARS --project] [LIT_DBRACKET_LIKE "="] [DQ [VarSub PROJECT]]} {[LIT_CHARS --zone] [LIT_DBRACKET_LIKE "="] [DQ [VarSub ZONE]]} {[LIT_CHARS describe]} {[VarSub update]} {[LIT_CHARS --format] [LIT_DBRACKET_LIKE "="] [SQ <LIT_CHARS "value(status)">]}) (Com {[LIT_CHARS true]}) )]})])
            (If
              (Com {[LIT_DBRACKET_LIKE "["]} {[VarSub result]} {[LIT_DBRACKET_LIKE "="]} {[DQ [LIT_CHARS ROLLED_OUT]]} {[LIT_DBRACKET_LIKE "]"]}              )
              (List
                (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "Rolling update "][VarSub update][LIT_CHARS " is "][VarSub result][LIT_CHARS " state and finished."]]}                )
                (Com {[LIT_CHARS break]}                )
              )
            )
            (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "Rolling update "][VarSub update][LIT_CHARS " is still in "][VarSub result][LIT_CHARS " state."]]}            )
            (Com {[LIT_CHARS sleep]} {[LIT_CHARS 10]}            )
          )
        )
      )
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "== Deleting old templates in "][VarSub PROJECT][LIT_CHARS ". =="]]}
        <
        (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND ">&"> 1),
        >
      )
      (For tmpl [{[VarSub old_templates bracket_op=(Index {A Atom NODE_ARITH_WORD {AS_OP_AT "@"}})]}])
        (AndOr OP_OR_IF
          (Com {[LIT_CHARS gcloud]} {[LIT_CHARS compute]} {[LIT_CHARS instance-templates]} {[LIT_CHARS delete]} {[LIT_CHARS --quiet]} {[LIT_CHARS --project] [LIT_DBRACKET_LIKE "="] [DQ [VarSub PROJECT]]} {[DQ [VarSub tmpl]]}          )
          (Com {[LIT_CHARS true]}          )
        )
      )
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "== Finished upgrading nodes to "][VarSub KUBE_VERSION][LIT_CHARS ". =="]]}
        <
        (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND ">&"> 1),
        >
      )
    )
  )
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('master_upgrade', {[LIT_CHARS true]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('node_upgrade', {[LIT_CHARS true]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('node_prereqs', {[LIT_CHARS false]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('local_binaries', {[LIT_CHARS false]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('env_os_distro', {[LIT_CHARS false]})])
  (While
    (Com {[LIT_CHARS getopts]} {[DQ [LIT_CHARS ":MNPlho"]]} {[LIT_CHARS opt]}    )
    (Case to_match={[VarSub opt]}, pat_word_list=[[{[LIT_CHARS M]}], [{[LIT_CHARS N]}], [{[LIT_CHARS P]}], [{[LIT_CHARS l]}], [{[LIT_CHARS o]}], [{[LIT_CHARS h]}], [{[\ LIT_ESCAPED_CHAR "\\?"]}]]
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('node_upgrade', {[LIT_CHARS false]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('master_upgrade', {[LIT_CHARS false]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('node_prereqs', {[LIT_CHARS true]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('local_binaries', {[LIT_CHARS true]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('env_os_distro', {[LIT_CHARS true]})])
      (List
        (Com {[LIT_CHARS usage]}        )
        (Com {[LIT_CHARS exit]} {[LIT_CHARS 0]}        )
      )
      (List
        (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "Invalid option: -"][VarSub OPTARG]]}
          <
          (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND ">&"> 1),
          >
        )
        (Com {[LIT_CHARS usage]}        )
        (Com {[LIT_CHARS exit]} {[LIT_CHARS 1]}        )
      )
    )
  )
  (Com {[LIT_CHARS shift]} {[ArithSub {A2 AS_OP_MINUS {A Atom NODE_ARITH_WORD {[VarSub OPTIND]}} {A Atom NODE_ARITH_WORD {[AS_NUM_LITERAL 1]}}}]}  )
  (If
    (AndOr OP_AND_IF
      (DBracket {B2 BINARY_INT_LT {[VarSub #]} {[LIT_CHARS 1]}})
      (DBracket {B2 BINARY_STRING_EQUAL {[DQ [VarSub local_binaries]]} {[DQ [LIT_CHARS false]]}})
    )
    (List
      (Com {[LIT_CHARS usage]}      )
      (Com {[LIT_CHARS exit]} {[LIT_CHARS 1]}      )
    )
  )
  (If
    (AndOr OP_AND_IF
      (DBracket {B2 BINARY_STRING_EQUAL {[DQ [VarSub master_upgrade]]} {[DQ [LIT_CHARS false]]}})
      (DBracket {B2 BINARY_STRING_EQUAL {[DQ [VarSub node_upgrade]]} {[DQ [LIT_CHARS false]]}})
    )
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "Can't specify both -M and -N"]]}
        <
        (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND ">&"> 1),
        >
      )
      (Com {[LIT_CHARS exit]} {[LIT_CHARS 1]}      )
    )
  )
  (If
    (DBracket {B2 BINARY_STRING_EQUAL {[DQ [VarSub local_binaries]]} {[DQ [LIT_CHARS false]]}})
    (Com {[LIT_CHARS set_binary_version]} {[VarSub 1]}    )
  )
  (Com {[LIT_CHARS prepare-upgrade]}  )
  (If
    (DBracket {B2 BINARY_STRING_EQUAL {[DQ [VarSub node_prereqs]]} {[DQ [LIT_CHARS true]]}})
    (List
      (Com {[LIT_CHARS prepare-node-upgrade]}      )
      (Com {[LIT_CHARS exit]} {[LIT_CHARS 0]}      )
    )
  )
  (If
    (DBracket {B2 BINARY_STRING_EQUAL {[DQ [VarSub master_upgrade]]} {[DQ [LIT_CHARS true]]}})
    (Com {[LIT_CHARS upgrade-master]}    )
  )
  (If
    (DBracket {B2 BINARY_STRING_EQUAL {[DQ [VarSub node_upgrade]]} {[DQ [LIT_CHARS true]]}})
    (If
      (DBracket {B2 BINARY_STRING_EQUAL {[DQ [VarSub local_binaries]]} {[DQ [LIT_CHARS true]]}})
      (List
        (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "Upgrading nodes to local binaries is not yet supported."]]}
          <
          (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND ">&"> 1),
          >
        )
        (Com {[LIT_CHARS exit]} {[LIT_CHARS 1]}        )
      )
      (ElseTrue)
      (Com {[LIT_CHARS upgrade-nodes]}      )
    )
  )
  (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "== Validating cluster post-upgrade =="]]}  )
  (Com {[DQ [VarSub KUBE_ROOT][LIT_CHARS /cluster/validate-cluster.sh]]}  )
)