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Add failure action for rolling updates

Browse source 
This changes the default behavior so that rolling updates will not
proceed once an updated task fails to start, or stops running during the
update. Users can use docker service inspect --pretty servicename to see
the update status, and if it pauses due to a failure, it will explain
that the update is paused, and show the task ID that caused it to pause.
It also shows the time since the update started.

A new --update-on-failure=(pause|continue) flag selects the
behavior. Pause means the update stops once a task fails, continue means
the old behavior of continuing the update anyway.

In the future this will be extended with additional behaviors like
automatic rollback, and flags controlling parameters like how many tasks
need to fail for the update to stop proceeding. This is a minimal
solution for 1.12.

Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
This commit is contained in:
Aaron Lehmann 2016-07-22 11:35:51 -07:00
parent 3585026c3a
commit 57ae29aa74
11 changed files with 171 additions and 108 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
api/client/service/inspect.go
View file

@ -4,6 +4,7 @@ import (
"fmt"
"io"
"strings"
"time"
"golang.org/x/net/context"
@ -101,6 +102,17 @@ func printService(out io.Writer, service swarm.Service) {
fmt.Fprintf(out, " Replicas:\t%d\n", *service.Spec.Mode.Replicated.Replicas)
}
}
if service.UpdateStatus.State != "" {
fmt.Fprintln(out, "Update status:")
fmt.Fprintf(out, " State:\t\t%s\n", service.UpdateStatus.State)
fmt.Fprintf(out, " Started:\t%s ago\n", strings.ToLower(units.HumanDuration(time.Since(service.UpdateStatus.StartedAt))))
if service.UpdateStatus.State == swarm.UpdateStateCompleted {
fmt.Fprintf(out, " Completed:\t%s ago\n", strings.ToLower(units.HumanDuration(time.Since(service.UpdateStatus.CompletedAt))))
}
fmt.Fprintf(out, " Message:\t%s\n", service.UpdateStatus.Message)
}
fmt.Fprintln(out, "Placement:")
if service.Spec.TaskTemplate.Placement != nil && len(service.Spec.TaskTemplate.Placement.Constraints) > 0 {
ioutils.FprintfIfNotEmpty(out, " Constraints\t: %s\n", strings.Join(service.Spec.TaskTemplate.Placement.Constraints, ", "))
@ -110,6 +122,7 @@ func printService(out io.Writer, service swarm.Service) {
if service.Spec.UpdateConfig.Delay.Nanoseconds() > 0 {
fmt.Fprintf(out, " Delay:\t\t%s\n", service.Spec.UpdateConfig.Delay)
}
fmt.Fprintf(out, " On failure:\t%s\n", service.Spec.UpdateConfig.FailureAction)
fmt.Fprintf(out, "ContainerSpec:\n")
printContainerSpec(out, service.Spec.TaskTemplate.ContainerSpec)

82
api/client/service/opts.go
View file

@ -274,6 +274,7 @@ func (m *MountOpt) Value() []swarm.Mount {
type updateOptions struct {
parallelism uint64
delay time.Duration
onFailure string
}
type resourceOptions struct {
@ -455,8 +456,9 @@ func (opts *serviceOptions) ToService() (swarm.ServiceSpec, error) {
},
Mode: swarm.ServiceMode{},
UpdateConfig: &swarm.UpdateConfig{
Parallelism: opts.update.parallelism,
Delay: opts.update.delay,
Parallelism: opts.update.parallelism,
Delay: opts.update.delay,
FailureAction: opts.update.onFailure,
},
Networks: convertNetworks(opts.networks),
EndpointSpec: opts.endpoint.ToEndpointSpec(),
@ -503,6 +505,7 @@ func addServiceFlags(cmd *cobra.Command, opts *serviceOptions) {
flags.Uint64Var(&opts.update.parallelism, flagUpdateParallelism, 1, "Maximum number of tasks updated simultaneously (0 to update all at once)")
flags.DurationVar(&opts.update.delay, flagUpdateDelay, time.Duration(0), "Delay between updates")
flags.StringVar(&opts.update.onFailure, flagUpdateFailureAction, "pause", "Action on update failure (pause|continue)")
flags.StringVar(&opts.endpoint.mode, flagEndpointMode, "", "Endpoint mode (vip or dnsrr)")
@ -513,41 +516,42 @@ func addServiceFlags(cmd *cobra.Command, opts *serviceOptions) {
}
const (
flagConstraint = "constraint"
flagConstraintRemove = "constraint-rm"
flagConstraintAdd = "constraint-add"
flagEndpointMode = "endpoint-mode"
flagEnv = "env"
flagEnvRemove = "env-rm"
flagEnvAdd = "env-add"
flagLabel = "label"
flagLabelRemove = "label-rm"
flagLabelAdd = "label-add"
flagLimitCPU = "limit-cpu"
flagLimitMemory = "limit-memory"
flagMode = "mode"
flagMount = "mount"
flagMountRemove = "mount-rm"
flagMountAdd = "mount-add"
flagName = "name"
flagNetwork = "network"
flagNetworkRemove = "network-rm"
flagNetworkAdd = "network-add"
flagPublish = "publish"
flagPublishRemove = "publish-rm"
flagPublishAdd = "publish-add"
flagReplicas = "replicas"
flagReserveCPU = "reserve-cpu"
flagReserveMemory = "reserve-memory"
flagRestartCondition = "restart-condition"
flagRestartDelay = "restart-delay"
flagRestartMaxAttempts = "restart-max-attempts"
flagRestartWindow = "restart-window"
flagStopGracePeriod = "stop-grace-period"
flagUpdateDelay = "update-delay"
flagUpdateParallelism = "update-parallelism"
flagUser = "user"
flagRegistryAuth = "with-registry-auth"
flagLogDriver = "log-driver"
flagLogOpt = "log-opt"
flagConstraint = "constraint"
flagConstraintRemove = "constraint-rm"
flagConstraintAdd = "constraint-add"
flagEndpointMode = "endpoint-mode"
flagEnv = "env"
flagEnvRemove = "env-rm"
flagEnvAdd = "env-add"
flagLabel = "label"
flagLabelRemove = "label-rm"
flagLabelAdd = "label-add"
flagLimitCPU = "limit-cpu"
flagLimitMemory = "limit-memory"
flagMode = "mode"
flagMount = "mount"
flagMountRemove = "mount-rm"
flagMountAdd = "mount-add"
flagName = "name"
flagNetwork = "network"
flagNetworkRemove = "network-rm"
flagNetworkAdd = "network-add"
flagPublish = "publish"
flagPublishRemove = "publish-rm"
flagPublishAdd = "publish-add"
flagReplicas = "replicas"
flagReserveCPU = "reserve-cpu"
flagReserveMemory = "reserve-memory"
flagRestartCondition = "restart-condition"
flagRestartDelay = "restart-delay"
flagRestartMaxAttempts = "restart-max-attempts"
flagRestartWindow = "restart-window"
flagStopGracePeriod = "stop-grace-period"
flagUpdateDelay = "update-delay"
flagUpdateFailureAction = "update-failure-action"
flagUpdateParallelism = "update-parallelism"
flagUser = "user"
flagRegistryAuth = "with-registry-auth"
flagLogDriver = "log-driver"
flagLogOpt = "log-opt"
)

3
api/client/service/update.go
View file

@ -191,12 +191,13 @@ func updateService(flags *pflag.FlagSet, spec *swarm.ServiceSpec) error {
return err
}
if anyChanged(flags, flagUpdateParallelism, flagUpdateDelay) {
if anyChanged(flags, flagUpdateParallelism, flagUpdateDelay, flagUpdateFailureAction) {
if spec.UpdateConfig == nil {
spec.UpdateConfig = &swarm.UpdateConfig{}
}
updateUint64(flagUpdateParallelism, &spec.UpdateConfig.Parallelism)
updateDuration(flagUpdateDelay, &spec.UpdateConfig.Delay)
updateString(flagUpdateFailureAction, &spec.UpdateConfig.FailureAction)
}
updateNetworks(flags, &spec.Networks)

1
contrib/completion/bash/docker
View file

@ -1726,6 +1726,7 @@ _docker_service_update() {
--restart-window
--stop-grace-period
--update-delay
--update-failure-action
--update-parallelism
--user -u
--workdir -w

1
contrib/completion/zsh/_docker
View file

@ -1094,6 +1094,7 @@ __docker_service_subcommand() {
"($help)--restart-window=[Window used to evaluate the restart policy]:window: "
"($help)--stop-grace-period=[Time to wait before force killing a container]:grace period: "
"($help)--update-delay=[Delay between updates]:delay: "
"($help)--update-failure-action=[Action on update failure]:mode:(pause continue)"
"($help)--update-parallelism=[Maximum number of tasks updated simultaneously]:number: "
"($help -u --user)"{-u=,--user=}"[Username or UID]:user:_users"
"($help)--with-registry-auth[Send registry authentication details to swarm agents]"

40
daemon/cluster/convert/service.go
View file

@ -53,9 +53,16 @@ func ServiceFromGRPC(s swarmapi.Service) types.Service {
}
service.Spec.UpdateConfig.Delay, _ = ptypes.Duration(&s.Spec.Update.Delay)
switch s.Spec.Update.FailureAction {
case swarmapi.UpdateConfig_PAUSE:
service.Spec.UpdateConfig.FailureAction = types.UpdateFailureActionPause
case swarmapi.UpdateConfig_CONTINUE:
service.Spec.UpdateConfig.FailureAction = types.UpdateFailureActionContinue
}
}
//Mode
// Mode
switch t := s.Spec.GetMode().(type) {
case *swarmapi.ServiceSpec_Global:
service.Spec.Mode.Global = &types.GlobalService{}
@ -65,6 +72,23 @@ func ServiceFromGRPC(s swarmapi.Service) types.Service {
}
}
// UpdateStatus
service.UpdateStatus = types.UpdateStatus{}
if s.UpdateStatus != nil {
switch s.UpdateStatus.State {
case swarmapi.UpdateStatus_UPDATING:
service.UpdateStatus.State = types.UpdateStateUpdating
case swarmapi.UpdateStatus_PAUSED:
service.UpdateStatus.State = types.UpdateStatePaused
case swarmapi.UpdateStatus_COMPLETED:
service.UpdateStatus.State = types.UpdateStateCompleted
}
service.UpdateStatus.StartedAt, _ = ptypes.Timestamp(s.UpdateStatus.StartedAt)
service.UpdateStatus.CompletedAt, _ = ptypes.Timestamp(s.UpdateStatus.CompletedAt)
service.UpdateStatus.Message = s.UpdateStatus.Message
}
return service
}
@ -111,9 +135,19 @@ func ServiceSpecToGRPC(s types.ServiceSpec) (swarmapi.ServiceSpec, error) {
}
if s.UpdateConfig != nil {
var failureAction swarmapi.UpdateConfig_FailureAction
switch s.UpdateConfig.FailureAction {
case types.UpdateFailureActionPause, "":
failureAction = swarmapi.UpdateConfig_PAUSE
case types.UpdateFailureActionContinue:
failureAction = swarmapi.UpdateConfig_CONTINUE
default:
return swarmapi.ServiceSpec{}, fmt.Errorf("unrecongized update failure action %s", s.UpdateConfig.FailureAction)
}
spec.Update = &swarmapi.UpdateConfig{
Parallelism: s.UpdateConfig.Parallelism,
Delay: *ptypes.DurationProto(s.UpdateConfig.Delay),
Parallelism: s.UpdateConfig.Parallelism,
Delay: *ptypes.DurationProto(s.UpdateConfig.Delay),
FailureAction: failureAction,
}
}

5
docs/reference/api/docker_remote_api_v1.24.md
View file

@ -3964,7 +3964,8 @@ Create a service
},
"UpdateConfig": {
"Delay": 30000000000.0,
"Parallelism": 2
"Parallelism": 2,
"FailureAction": "pause"
},
"EndpointSpec": {
"Ports": [
@ -4054,6 +4055,8 @@ JSON Parameters:
- **Parallelism** – Maximum number of tasks to be updated in one iteration (0 means unlimited
parallelism).
- **Delay** – Amount of time between updates.
- **FailureAction** - Action to take if an updated task fails to run, or stops running during the
update. Values are `continue` and `pause`.
- **Networks** – Array of network names or IDs to attach the service to.
- **Endpoint** – Properties that can be configured to access and load balance a service.
- **Spec** –

5
docs/reference/api/docker_remote_api_v1.25.md
View file

@ -3965,7 +3965,8 @@ Create a service
},
"UpdateConfig": {
"Delay": 30000000000.0,
"Parallelism": 2
"Parallelism": 2,
"FailureAction": "pause"
},
"EndpointSpec": {
"Ports": [
@ -4055,6 +4056,8 @@ JSON Parameters:
- **Parallelism** – Maximum number of tasks to be updated in one iteration (0 means unlimited
parallelism).
- **Delay** – Amount of time between updates.
- **FailureAction** - Action to take if an updated task fails to run, or stops running during the
update. Values are `continue` and `pause`.
- **Networks** – Array of network names or IDs to attach the service to.
- **Endpoint** – Properties that can be configured to access and load balance a service.
- **Spec** –

55
docs/reference/commandline/service_create.md
View file

@ -17,33 +17,34 @@ Usage: docker service create [OPTIONS] IMAGE [COMMAND] [ARG...]
Create a new service
Options:
--constraint value Placement constraints (default [])
--endpoint-mode string Endpoint mode (vip or dnsrr)
-e, --env value Set environment variables (default [])
--help Print usage
-l, --label value Service labels (default [])
--limit-cpu value Limit CPUs (default 0.000)
--limit-memory value Limit Memory (default 0 B)
--log-driver string Logging driver for service
--log-opt value Logging driver options (default [])
--mode string Service mode (replicated or global) (default "replicated")
--mount value Attach a mount to the service
--name string Service name
--network value Network attachments (default [])
-p, --publish value Publish a port as a node port (default [])
--replicas value Number of tasks (default none)
--reserve-cpu value Reserve CPUs (default 0.000)
--reserve-memory value Reserve Memory (default 0 B)
--restart-condition string Restart when condition is met (none, on-failure, or any)
--restart-delay value Delay between restart attempts (default none)
--restart-max-attempts value Maximum number of restarts before giving up (default none)
--restart-window value Window used to evaluate the restart policy (default none)
--stop-grace-period value Time to wait before force killing a container (default none)
--update-delay duration Delay between updates
--update-parallelism uint Maximum number of tasks updated simultaneously (0 to update all at once) (default 1)
-u, --user string Username or UID
--with-registry-auth Send registry authentication details to Swarm agents
-w, --workdir string Working directory inside the container
--constraint value Placement constraints (default [])
--endpoint-mode string Endpoint mode (vip or dnsrr)
-e, --env value Set environment variables (default [])
--help Print usage
-l, --label value Service labels (default [])
--limit-cpu value Limit CPUs (default 0.000)
--limit-memory value Limit Memory (default 0 B)
--log-driver string Logging driver for service
--log-opt value Logging driver options (default [])
--mode string Service mode (replicated or global) (default "replicated")
--mount value Attach a mount to the service
--name string Service name
--network value Network attachments (default [])
-p, --publish value Publish a port as a node port (default [])
--replicas value Number of tasks (default none)
--reserve-cpu value Reserve CPUs (default 0.000)
--reserve-memory value Reserve Memory (default 0 B)
--restart-condition string Restart when condition is met (none, on-failure, or any)
--restart-delay value Delay between restart attempts (default none)
--restart-max-attempts value Maximum number of restarts before giving up (default none)
--restart-window value Window used to evaluate the restart policy (default none)
--stop-grace-period value Time to wait before force killing a container (default none)
--update-delay duration Delay between updates
--update-failure-action string Action on update failure (pause|continue) (default "pause")
--update-parallelism uint Maximum number of tasks updated simultaneously (0 to update all at once) (default 1)
-u, --user string Username or UID
--with-registry-auth Send registry authentication details to Swarm agents
-w, --workdir string Working directory inside the container
```
Creates a service as described by the specified parameters. This command has to

69
docs/reference/commandline/service_update.md
View file

@ -17,40 +17,41 @@ Usage: docker service update [OPTIONS] SERVICE
Update a service
Options:
--args string Service command args
--constraint-add value Add or update placement constraints (default [])
--constraint-rm value Remove a constraint (default [])
--endpoint-mode string Endpoint mode (vip or dnsrr)
--env-add value Add or update environment variables (default [])
--env-rm value Remove an environment variable (default [])
--help Print usage
--image string Service image tag
--label-add value Add or update service labels (default [])
--label-rm value Remove a label by its key (default [])
--limit-cpu value Limit CPUs (default 0.000)
--limit-memory value Limit Memory (default 0 B)
--log-driver string Logging driver for service
--log-opt value Logging driver options (default [])
--mount-add value Add or update a mount on a service
--mount-rm value Remove a mount by its target path (default [])
--name string Service name
--network-add value Add or update network attachments (default [])
--network-rm value Remove a network by name (default [])
--publish-add value Add or update a published port (default [])
--publish-rm value Remove a published port by its target port (default [])
--replicas value Number of tasks (default none)
--reserve-cpu value Reserve CPUs (default 0.000)
--reserve-memory value Reserve Memory (default 0 B)
--restart-condition string Restart when condition is met (none, on-failure, or any)
--restart-delay value Delay between restart attempts (default none)
--restart-max-attempts value Maximum number of restarts before giving up (default none)
--restart-window value Window used to evaluate the restart policy (default none)
--stop-grace-period value Time to wait before force killing a container (default none)
--update-delay duration Delay between updates
--update-parallelism uint Maximum number of tasks updated simultaneously (0 to update all at once) (default 1)
-u, --user string Username or UID
--with-registry-auth Send registry authentication details to Swarm agents
-w, --workdir string Working directory inside the container
--args string Service command args
--constraint-add value Add or update placement constraints (default [])
--constraint-rm value Remove a constraint (default [])
--endpoint-mode string Endpoint mode (vip or dnsrr)
--env-add value Add or update environment variables (default [])
--env-rm value Remove an environment variable (default [])
--help Print usage
--image string Service image tag
--label-add value Add or update service labels (default [])
--label-rm value Remove a label by its key (default [])
--limit-cpu value Limit CPUs (default 0.000)
--limit-memory value Limit Memory (default 0 B)
--log-driver string Logging driver for service
--log-opt value Logging driver options (default [])
--mount-add value Add or update a mount on a service
--mount-rm value Remove a mount by its target path (default [])
--name string Service name
--network-add value Add or update network attachments (default [])
--network-rm value Remove a network by name (default [])
--publish-add value Add or update a published port (default [])
--publish-rm value Remove a published port by its target port (default [])
--replicas value Number of tasks (default none)
--reserve-cpu value Reserve CPUs (default 0.000)
--reserve-memory value Reserve Memory (default 0 B)
--restart-condition string Restart when condition is met (none, on-failure, or any)
--restart-delay value Delay between restart attempts (default none)
--restart-max-attempts value Maximum number of restarts before giving up (default none)
--restart-window value Window used to evaluate the restart policy (default none)
--stop-grace-period value Time to wait before force killing a container (default none)
--update-delay duration Delay between updates
--update-failure-action string Action on update failure (pause|continue) (default "pause")
--update-parallelism uint Maximum number of tasks updated simultaneously (0 to update all at once) (default 1)
-u, --user string Username or UID
--with-registry-auth Send registry authentication details to Swarm agents
-w, --workdir string Working directory inside the container
```
Updates a service as described by the specified parameters. This command has to be run targeting a manager node.

5
integration-cli/docker_api_swarm_test.go
View file

@ -791,8 +791,9 @@ func serviceForUpdate(s *swarm.Service) {
},
},
UpdateConfig: &swarm.UpdateConfig{
Parallelism: 2,
Delay: 8 * time.Second,
Parallelism: 2,
Delay: 8 * time.Second,
FailureAction: swarm.UpdateFailureActionContinue,
},
}
s.Spec.Name = "updatetest"