Add reload/leave http endpoints #2516
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kyhavlov
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| @@ -221,6 +235,19 @@ The return code is 200 on success. | |||
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| ### <a name="agent_force_leave"></a> /v1/agent/force-leave/\<node\> | |||
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Should be "v1/agent/leave" for this one (not "force").
| @@ -221,6 +235,19 @@ The return code is 200 on success. | |||
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| ### <a name="agent_force_leave"></a> /v1/agent/force-leave/\<node\> | |||
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| This endpoint is hit with a GET and is used to trigger a graceful leave and shutdown | |||
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Let's change this and the other leave docs to say PUT even though it takes any verb.
| t.Fatalf("member status is %v, should be left", err) | ||
| }) | ||
| } | ||
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| func TestHTTPAgentForceLeave(t *testing.T) { |
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Should have a reload test as well.
| @@ -36,6 +36,11 @@ func (s *HTTPServer) AgentSelf(resp http.ResponseWriter, req *http.Request) (int | |||
| }, nil | |||
| } | |||
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| func (s *HTTPServer) AgentReload(resp http.ResponseWriter, req *http.Request) (interface{}, error) { | |||
| _, err := s.agent.command.handleReload(s.agent.config) | |||
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Similar for these as the monitor - let's add the Raft check with a TODO so this needs the operator read privs in master. These are pretty serious otherwise.
| @@ -36,6 +36,11 @@ func (s *HTTPServer) AgentSelf(resp http.ResponseWriter, req *http.Request) (int | |||
| }, nil | |||
| } | |||
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| func (s *HTTPServer) AgentReload(resp http.ResponseWriter, req *http.Request) (interface{}, error) { | |||
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Let's make these new ones require a PUT otherwise give a 405. Might as well start these off in a better spot :-)
| @@ -472,6 +473,7 @@ func (c *Command) setupAgent(config *Config, logOutput io.Writer, logWriter *log | |||
| return err | |||
| } | |||
| c.agent = agent | |||
| agent.command = c | |||
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This feels a little dirty to expose the whole command. How about type reloadFn func() err and pass that into Create()?
| @@ -71,6 +71,9 @@ type Agent struct { | |||
| server *consul.Server | |||
| client *consul.Client | |||
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| // The command used to launch this agent | |||
| command *Command | |||
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You can drop this now, right?
| @@ -747,6 +749,9 @@ func (c *Command) Run(args []string) int { | |||
| c.logFilter = logFilter | |||
| c.logOutput = logOutput | |||
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| // Setup the channel for triggering config reloads | |||
| c.configReloadCh = make(chan chan error, 0) | |||
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You don't need the 0 on here for unbuffered.
| errCh := make(chan error, 0) | ||
| s.agent.reloadCh <- errCh | ||
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| return nil, <-errCh |
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This should wait on the shutdown channel too, and return some kind of error.
| @@ -196,6 +198,18 @@ It returns a JSON body like this: | |||
| } | |||
| ``` | |||
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| ### <a name="agent_reload"></a> /v1/agent/reload | |||
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| Added in Consul 0.7.2, this endpoint is hit with a PUT and is used to instruct | |||
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A community person went through and put all the HTTP verbs in backticks so we should keep that style here. Looks nicer.
| agent as "left" instead of "failed". Nodes that leave will not attempt to re-join | ||
| the cluster on restarting with a snapshot. | ||
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| For nodes in server mode, the node is removed from the Raft peer set in a graceful |
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This isn't true any more after Consul 0.7.0 so we should change this, and reference the leave_on_terminate config option. Did this get copied over from some place? We should fix the source as well.
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@kyhavlov @slackpad I realize this is merged, but this seemed the best place to comment about an issue before possibly opening a new bug/item. The TestAgent_Reload in the tests for this feature break on a machine with 2 private IP's. It took me a while to figure out how to get the output from the MockUi, (this drove me NUTS btw) but once I did it led me to the understanding that while nexConfig is called to get a config, it's never actually used to create the instance of the server used in the test. It builds a DefaultConfig on a Run(), but in that default, the bind is 0.0.0.0. If that's the bind, the agent fails to start because of the multi-private-ip issue. Not sure how/if this needs to be fixed. I've worked around it by simply adding a -bind to the args list for the Command. It seems odd I haven't hit this for any other tests, so I'm not sure what this test is doing that's different from the rest. I haven't dug into it deeply yet. |
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Hi @rhyas that sounds like it's worth tracking. Would you mind opening a new issue for that? Binding to the address in the config sounds like a reasonable fix for this. |
Add the reload/leave endpoints as part of #2502