c078dc37a9
This is just a cleanup work to hide some of the private state of ReplSetTest so it is easier to encapsulate and add new logic. Also enables strict mode.
119 lines
3.0 KiB
JavaScript
119 lines
3.0 KiB
JavaScript
/* test removing a node from a replica set
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*
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* Start set with two nodes
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* Initial sync
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* Remove secondary
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* Bring secondary back up
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* Add it back as secondary
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* Make sure both nodes are either primary or secondary
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*/
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load("jstests/replsets/rslib.js");
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var name = "removeNodes";
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var host = getHostName();
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print("Start set with two nodes");
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var replTest = new ReplSetTest( {name: name, nodes: 2} );
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var nodes = replTest.startSet();
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replTest.initiate();
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var master = replTest.getPrimary();
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var secondary = replTest.getSecondary();
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print("Initial sync");
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master.getDB("foo").bar.baz.insert({x:1});
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replTest.awaitReplication();
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print("Remove secondary");
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var config = replTest.getReplSetConfig();
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for (var i = 0; i < config.members.length; i++) {
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if (config.members[i].host == secondary.host) {
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config.members.splice(i, 1);
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break;
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}
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};
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config.version = 2;
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assert.eq(secondary.getDB("admin").runCommand({ping:1}).ok,
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1,
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"we should be connected to the secondary");
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try {
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master.getDB("admin").runCommand({replSetReconfig:config});
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}
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catch(e) {
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print(e);
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}
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// This tests that the secondary disconnects us when it picks up the new config.
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assert.soon(
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function() {
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try {
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secondary.getDB("admin").runCommand({ping:1});
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} catch (e) {
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return true;
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}
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return false;
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}
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);
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// Now we should successfully reconnect to the secondary.
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assert.eq(secondary.getDB("admin").runCommand({ping:1}).ok, 1,
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"we aren't connected to the secondary");
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reconnect(master);
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assert.soon(function() {
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var c = master.getDB("local").system.replset.findOne();
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return c.version == 2;
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});
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print("Add it back as a secondary");
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config.members.push({_id:2, host : secondary.host});
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config.version = 3;
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// Need to keep retrying reconfig here, as it will not work at first due to the primary's
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// perception that the secondary is still "down".
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assert.soon(function() { try {
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reconfig(replTest, config);
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return true;
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} catch (e) {
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return false;
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} });
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master = replTest.getPrimary();
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printjson(master.getDB("admin").runCommand({replSetGetStatus:1}));
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var newConfig = master.getDB("local").system.replset.findOne();
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print("newConfig: " + tojson(newConfig));
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assert.eq(newConfig.version, 3);
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print("reconfig with minority");
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replTest.stop(secondary);
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assert.soon(function() {
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try {
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return master.getDB("admin").runCommand({isMaster : 1}).secondary;
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}
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catch(e) {
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print("trying to get master: "+e);
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}
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},"waiting for primary to step down",(60*1000),1000);
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config.version = 4;
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config.members.pop();
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try {
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master.getDB("admin").runCommand({replSetReconfig : config, force : true});
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}
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catch(e) {
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print(e);
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}
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reconnect(master);
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assert.soon(function() {
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return master.getDB("admin").runCommand({isMaster : 1}).ismaster;
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},"waiting for old primary to accept reconfig and step up",(60*1000),1000);
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config = master.getDB("local").system.replset.findOne();
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printjson(config);
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assert.gt(config.version, 4);
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replTest.stopSet();
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