Node IDs are currently randomly generated during node startup. That means they change every time the node is restarted. While this doesn't matter for ES proper, it makes it hard for external services to track nodes. Another, more minor, side effect is that indexing the output of, say, the node stats API results in creating new fields due to node ID being used as keys.
The first approach I considered was to use the node's published address as the base for the id. We already [treat nodes with the same address as the same](https://github.com/elastic/elasticsearch/blob/master/core/src/main/java/org/elasticsearch/discovery/zen/NodeJoinController.java#L387) so this is a simple change (see [here](https://github.com/elastic/elasticsearch/compare/master...bleskes:node_persistent_id_based_on_address)). While this is simple and it works for probably most cases, it is not perfect. For example, if after a node restart, the node is not able to bind to the same port (because it's not yet freed by the OS), it will cause the node to still change identity. Also in environments where the host IP can change due to a host restart, identity will not be the same.
Due to those limitation, I opted to go with a different approach where the node id will be persisted in the node's data folder. This has the upside of connecting the id to the nodes data. It also means that the host can be adapted in any way (replace network cards, attach storage to a new VM). I
It does however also have downsides - we now run the risk of two nodes having the same id, if someone copies clones a data folder from one node to another. To mitigate this I changed the semantics of the protection against multiple nodes with the same address to be stricter - it will now reject the incoming join if a node exists with the same id but a different address. Note that if the existing node doesn't respond to pings (i.e., it's not alive) it will be removed and the new node will be accepted when it tries another join.
Last, and most importantly, this change requires that *all* nodes persist data to disk. This is a change from current behavior where only data & master nodes store local files. This is the main reason for marking this PR as breaking.
Other less important notes:
- DummyTransportAddress is removed as we need a unique network address per node. Use `LocalTransportAddress.buildUnique()` instead.
- I renamed `node.add_lid_to_custom_path` to `node.add_lock_id_to_custom_path` to avoid confusion with the node ID which is now part of the `NodeEnvironment` logic.
- I removed the `version` paramater from `MetaDataStateFormat#write` , it wasn't really used and was just in the way :)
- TribeNodes are special in the sense that they do start multiple sub-nodes (previously known as client nodes). Those sub-nodes do not store local files but derive their ID from the parent node id, so they are generated consistently.
Today throughout the codebase, catch throwable is used with reckless
abandon. This is dangerous because the throwable could be a fatal
virtual machine error resulting from an internal error in the JVM, or an
out of memory error or a stack overflow error that leaves the virtual
machine in an unstable and unpredictable state. This commit removes
catch throwable from the codebase and removes the temptation to use it
by modifying listener APIs to receive instances of Exception instead of
the top-level Throwable.
Relates #19231
As discussed at https://github.com/elastic/elasticsearch-cloud-azure/issues/91#issuecomment-229113595, we know that the current `discovery-azure` plugin only works with Azure Classic VMs / Services (which is somehow Legacy now).
The proposal here is to rename `discovery-azure` to `discovery-azure-classic` in case some users are using it.
And deprecate it for 5.0.
Closes#19144.
As some plugins are becoming big now, it is hard for the user to know, if the plugin
is being downloaded or just nothing happens.
This commit adds a progress bar during download, which can be disabled by using the `-q`
parameter.
In addition this updates to jimfs 1.1, which allows us to test the batch mode, as adding
security policies are now supported due to having jimfs:// protocol support in URL stream
handlers.
This commit adds randomization for the packaging upgrade test. In
particular, we extract a list of the released version of Elasticsearch
from Maven Central and randomize the selection of the version to upgrade
from. The randomization is repeatable, and supports the tests.seed
property. Specific versions can be tested by setting the property
tests.packaging.upgrade.from.versions.
Relates #19033
Registering a script engine or native scripts still uses Guice today
and is much more complicated than needed. This change moves to a pull
based model where script plugins have to implement a dedicated interface
`ScriptPlugin` and defines simple getter returning instances rather than
classes.
The database files have been doubled in size compared to the previous files being used.
For this reason the database files are now gzip compressed, which required using
`GZIPInputStream` when loading database files.
Previously Elasticsearch used $DATA_DIR/$CLUSTER_NAME/nodes for the path
where data is stored, this commit changes that to be $DATA_DIR/nodes.
On startup, if the old folder structure is detected it will be used.
This behavior will be removed in Elasticsearch 6.0
Resolves#17810
Folded grok processor into ingest-common module.
The rest tests have been moved to ingest-common module as well, because these tests don't run in the rest-api-spec module but in the distribution:integ-test-zip module
and adding a test plugin there felt just wrong to me. I think this is ok. I left a tiny ingest rest test behind in that tests with an empty pipeline.
Removed messy tests, these tests were already covered in the rest tests
Added ingest test plugin in test infra so that each module testing integration with ingest doesn't need write its own plugin
Moved reindex ingest tests to qa module
Closes#18490
We have 3 evil tests for jarhell. They have been failing in java 9
because of how evil they are. The first checks the leniency we add for
jarhell in the jdk itself. This is unecessary, since if the leniency
wasn't there, we would already be failing all jarhell checks. The second
is checking the compile version is compatible with the jdk. This is
simpler since we don't need to fake the java version: we know 1.7 should
be compatibile with both java 8 and 9, so we can use that as a constant.
Finally the last test checks if the java version system property is
broken. This is simply something we should not check, we have to trust
that java specifies it correctly, and again, if it was broken, all
jarhell checks would be broken.
Lucene SuppressForbidden is marked lucene.internal and should not be
used outside of Lucene. This commit removes the uses of this class
within Elasticsearch. Instead,
org.elasticsearch.common.SuppressForbidden should be used, which was
already the case in most places.
This commit fixes an issue with the plugins directory being a symbolic
link. Namely, the install plugins command attempts to always create the
plugins directory just in case it does not exist. The JDK method used
here guarantees that the directory is created, and an exception is not
thrown if the directory could not be created because it already
exists. The problem is that this JDK method does not respect symlinks so
its internal existence checks fails, it proceeds to attempt to create
the directory, but the directory creation fails because the symlink
exists. This is documented as being not an issue. We work around this by
checking if there is a symlink where we expect the plugins directory to
be, and only attempt to create if not. We add a unit test that plugin
installation to a symlinked plugins directory works as expected.
This commit removes the ability to specify a custom plugins
path. Instead, the plugins path will always be a subdirectory called
"plugins" off of the home directory.
- now you can specify a list of grok patterns to match your field with
and the first one to successfully match wins.
- only non-null captures will be inserted into your matched document.
Fixes#17903.
This removes the ScriptMode class entirely, which was an enum with two
options (ON and OFF) which essentially boiled down to true and false.
Now the boolean values are used instead.
Today when parsing settings during bootstrap, we add a system property
for every Elasticsearch setting. Additionally, settings can be set via
system properties. This commit simplifies this situation.
- settings are no longer propogated to system properties
- system properties can not be used to set settings
- the "es." prefix on settings is no longer required (nor permitted)
- test logging has a dedicated system property (tests.logger.level)
Relates #18198
The plugin script parses command-line options looking for Java system
properties and extracts these arguments to pass to the java command when
starting the JVM. Since elasticsearch-plugin allows arbitrary user
arguments to the JVM via ES_JAVA_OPTS, this parsing is unnecessary. This
commit removes this unnecessary
Relates #18207
This commit modifies the packaging tests to account for the fact that
rpm behaves differently with respect to preserving directories marked as
"CONFIG | NOREPLACE" on older versions versus newer versions. Older
versions will leave the directory as-is while newer versions will append
the suffix ".rpmsave" to the directory name.
Relates #18216
This change makes the vagrant tasks extend LoggedExec, so that the
entire vagrant output can be dumped on failure (and completely logged
when using --info). It should help for debugging issues like #18122.
Exit with proper exit code (1) and an error message if elasticsearch
executable binary does not exists or has insufficient permissions to
execute.
Squashed commit of the following:
commit 9768d316303418ba4f9c96d3f87c376048a1b1bc
Author: Puru <tuladharpuru@gmail.com>
Date: Fri Apr 22 23:26:47 2016 +0545
Fixed ES_HOME typo
commit 79a2b0394297f8b02b6f71b71ba35ff79f1a684e
Author: Puru <tuladharpuru@gmail.com>
Date: Sun Apr 10 11:00:24 2016 +0545
Improve elasticsearch startup script test
Added improvement as per conversation in https://github.com/elastic/elasticsearch/pull/17082#issuecomment-206459613
commit 7be38e1fefd4baa6ccdbdc14745c00f6dc052e0c
Author: Puru <tuladharpuru@gmail.com>
Date: Wed Mar 23 13:23:52 2016 +0545
Add elasticsearch startup script test
The test ensures that elasticsearch startup script exists and is executable.
commit d10eed5c08260fa9c158a4487bbb3103a8d867ed
Author: Puru <tuladharpuru@gmail.com>
Date: Wed Mar 23 12:30:25 2016 +0545
Fixed IF syntax and failure message
commit 6dc66f616545572485b4d43bee05a4cbbf1bed72
Author: Puru <tuladharpuru@gmail.com>
Date: Sat Mar 12 11:08:11 2016 +0545
Fix exit code
Exit with proper exit code (1) and an error message if elasticsearch executable binary does not exists or has insufficient permissions to execute.
This changes our packaging to be explicit about the permissions of files
and directories in the tar.gz, rpm, and deb packages. This is to protect
against a user having an incorrectly set umask when installing.
Additionally, plugins that are installed now have their permissions set
by the plugin installation so that plugins that may have been packaged
with incorrect permissions are secured.
Resolves#17634
* `rename` processor, renamed `to` to `target_field`
* `date` processor, renamed `match_field` to `field` and renamed `match_formats` to `formats`
* `geoip` processor, renamed `source_field` to `field` and renamed `fields` to `properties`
* `attachment` processor, renamed `source_field` to `field` and renamed `fields` to `properties`
Closes#17835
In Elasticsearch 5.0.0, by default unquoted field names in JSON will be
rejected. This can cause issues, however, for documents that were
already indexed with unquoted field names. To alleviate this, a system
property has been added that can be enabled so migration can occur.
This system property will be removed in Elasticsearch 6.0.0
Resolves#17674
This commit adds a new configuration file jvm.options to centralize and
simplify management of JVM options. This separates the configuration of
the JVM from the packaging scripts (bin/elasticsearch*, bin/service.bat,
and init.d/elasticsearch) simplifying end-user operational management of
custom JVM options.
This change makes specifying which boxes to run vagrant tests on a
little easier. Previously there were two tasks, checkPackages and
checkPackagesAllDistros. With this change, there is a single
packagingTest task. The boxes to run on are specified using the
gradle property vagrant.boxes, which can be easily specified on the
command line, or in a gradle properties file. There are also two
alias names, 'sample' for a yum and apt box, and 'all' for all boxes.
This commit ensures that the data, logs, and config directories have the
proper ownership after the packages are installed. Additionally, this
commit ensures that the configs in /etc/elasticsearch are preserved
after removal of the RPM package.
Debian asks during installation, if the configuration file should be updated.
This is asked via a prompt and thus hangs.
This adds an option to always update to the newer config file, so automated
installation keeps working.
Change version, required a minor fix in the RPM building.
In case of a alpha/beta version, the release will contain alpha/beta
as the RPM version cannot contains dashes/tildes.
This commit adds a bootstrap check on Linux and OS X for the max size of
virtual memory (address space) to the user running the Elasticsearch
process.
Closes#16935
This commit sets up the default filesystem used during install plugins
tests. A hack is neeeded to handle the temporary directory because the
system property "java.io.tmpdir" will have been initialized to a value
that is sensible for the default filesystem, but not necessarily to a
value that makes sense for the mock filesystem in use during the
tests. This property is restored after each test.
This commit refactors the unit tests for installing plugins to test
against mock filesystems (as well as the native filesystem) for better
test coverage. This commit also adds tests that cover the POSIX
attributes handling when installing plugins (e.g., ensuring that the
plugins directory has the right permissions, the bin directory has
execute permissions, and the config directory has the same owner and
group as its parent).
Today, certain bootstrap properties are set and read via system
properties. This action-at-distance way of managing these properties is
rather confusing, and completely unnecessary. But another problem exists
with setting these as system properties. Namely, these system properties
are interpreted as Elasticsearch settings, not all of which are
registered. This leads to Elasticsearch failing to startup if any of
these special properties are set. Instead, these properties should be
kept as local as possible, and passed around as method parameters where
needed. This eliminates the action-at-distance way of handling these
properties, and eliminates the need to register these non-setting
properties. This commit does exactly that.
Additionally, today we use the "-D" command line flag to set the
properties, but this is confusing because "-D" is a special flag to the
JVM for setting system properties. This creates confusion because some
"-D" properties should be passed via arguments to the JVM (so via
ES_JAVA_OPTS), and some should be passed as arguments to
Elasticsearch. This commit changes the "-D" flag for Elasticsearch
settings to "-E".
This change adds the infrastructure to run the rest tests on a multi-node
cluster that users 2 different minor versions of elasticsearch. It doesn't implement
any dedicated BWC tests but rather leverages the existing REST tests.
Since we don't have a real version to test against, the tests uses the current version
until the first minor / RC is released to ensure the infrastructure works.
Relates to #14406Closes#17072
When unzipping a plugin zip, the zip entries are resolved relative to
the directory being unzipped into. However, there are currently no
checks that the entry name was not absolute, or relatively points
outside of the plugin dir. This change adds a check for those two cases.
Indexing failures have caused the reindex http request to fail for a while
now. Both search and indexing failures cause it to abort. But search
failures didn't cause a non-200 response code from the http api. This
fixes that.
Also slips in a fix to some infrequently failing rest tests.
Closes#16037
Currently, the cluster service is tightly coupled to the transport service by both managing node connections and requiring the bound address in order to create the local disco node. This commit introduces a new NodeConnectionsService which is in charge of node connection management and makes it possible to remove all network related calls from the cluster service. The local DiscoNode is now created by DiscoveryNodeService and is set both the cluster service and the transport service during node start up.
Closes#16788Closes#16872
This commit simplifies and consolidates the two different
implementations of terminals used in tests. There is now a single
MockTerminal which captures output, and allows accessing as one large
string (with unix style \n as newlines), as well as configuring
input.
The big win here is catching tests that are incorrectly named and will
be skipped by gradle, providing a false sense of security.
The whole thing takes about 10 seconds on my Macbook Air, not counting
compiling the test classes, which seems worth it. Because this runs as
a gradle task with propery UP-TO-DATE handling it can be skipped if the
tests haven't been changed which should save some time.
I chose to keep this in test:framework rather than a new subproject of
buildSrc because ESIntegTestCase and doesn't inroduce any additional
dependencies.
DiscoveryService was a bridge into the discovery universe. This is unneeded and we can just access discovery directly or do things in a different way.
One of those different ways, is not having a dedicated discovery implementation for each our dicovery plugins but rather reuse ZenDiscovery.
UnicastHostProviders are now classified by discovery type, removing unneeded checks on plugins.
Closes#16821
Today we might start a node and some of the paths might not have the
required permissions. This commit goes through all data directories as
well as index, shard and state directories and ensures we have write access.
To make this work across all OS etc. we are trying to write a real file
and remove it again in each of those directories
All we do is check the cancelled flag and stop the request at a few key
points.
Adds the cancellation cause to the status so any request that is cancelled
but doesn't die can be seen in the task list.
One of our tests leaked a system property here since we failed after appling some
system properties in BootstrapCLIParser. This is not a huge deal in production since
we exit the JVM if we fail on that. Yet for correctnes we should only apply them if
we manage to parse them all.
This also caused a test failure lately on CI but on an unrelated test:
https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+master+periodic/314/console
This processor is useful when all elements of a json array need to be processed in the same way.
This avoids that a processor needs to be defined for each element in an array.
Also it is very likely that it is unknown how many elements are inside an json array.
Renamed `ingest-with-mustache` to `smoke-test-ingest-with-all-dependencies`
Also renamed `ingest-disabled` to `smoke-test-ingest-disabled` so that the name is more inline with other qa smoke test modules.
Identifying when a plugin id is maven coordinates is currently done by
checking if the plugin id contains 2 colons. However, a valid url could
have 2 colons, for example when a port is specified. This change adds
another check, ensuring the plugin id with maven coordinates does not
contain a slash, which only a url would have.
closes#16376
This commit enableds strict settings validation on node startup. All settings
passed to elasticsearch either through system properties, yaml files or any other
way to pass settings must be registered and valid. Settings that are unknown ie. due to
typos or due to deprecation or removal will cause the node to NOT start up. Plugins
have to declare all their settings on the `SettingsModule#registerSetting` and settings for
plugins that are not installed must be removed.
This commit also removes the ability to specify the nodes name via `-Des.name` or just `name` in the
configuration files. The node name must be prefixed with the node prexif like `node.name: Boom`. Left over
usage of `name` will also cause startup to fail.
Cli tools currently catch all exceptions, and only print the exception
message, except when a special system property is set. Even with this
flag set, certain exceptions, like IOException, are captured and their
stack trace is always lost.
This change adds a UserError class, which can be used a cli tools to
specify a message to the user, as well as an exit status. All other
exceptions are propagated out of main, so java will exit with non-zero
and print the stack trace.
The plugin cli currently is extremely lenient, allowing most errors to
simply be logged. This can lead to either corrupt installations (eg
partially installed plugins), or confused users.
This change rewrites the plugin cli to have almost no leniency.
Unfortunately it was not possible to remove all leniency, due in
particular to how config files are handled.
The following functionality was simplified:
* The format of the name argument to install a plugin is now an official
plugin name, maven coordinates, or a URL.
* Checksum files are required, and only checked, for official plugins
and maven plugins. Checksums are also only SHA1.
* Downloading no longer uses a separate thread, and no longer has a timeout.
* Installation, and removal, attempts to be atomic. This only truly works
when no config or bin files exist.
* config and bin directories are verified before copying is attempted.
* Permissions and user/group are no longer set on config and bin files.
We rely on the users umask.
* config and bin directories must only contain files, no subdirectories.
* The code is reorganized so each command is a separate class. These
classes already existed, but were embedded in the plugin cli class, as
an extra layer between the cli code and the code running for each command.
If we don't do this, and some path.conf is set when starting the tribe node, that path.conf will be ignored and the inner tribe clients will try to read elsewhere, where they most likely don't have permissions to read from.
Closes#16253Closes#16258
This commit converts the script mode settings to the new settings
infrastructure. This is a major refactoring of the handling of script
mode settings. This refactoring is necessary because these settings are
determined at runtime based on the registered script engines and the
registered script contexts.
The rest test framework, because it used to be tightly integrated with
ESIntegTestCase, currently expects the addresses for the test cluster to
be passed using the transport protocol port. However, it only uses this
to then find the http address.
This change makes ESRestTestCase extend from ESTestCase instead of
ESIntegTestCase, and changes the sysprop used to tests.rest.cluster,
which now takes the http address.
closes#15459
Site plugins used to be used for things like kibana and marvel, but
there is no longer a need since kibana (and marvel as a kibana plugin)
uses node.js. This change removes site plugins, as well as the flag for
jvm plugins. Now all plugins are jvm plugins.
This creates an reindex plugin with a very basic implementation that is
very like delete-by-query. New we'll integrate it with the task managament
work but for now this works.
Rather than failing the request, when a node with node.ingest set to false receives an index or bulk request with a pipeline id, it should try to redirect the request to another node with node.ingest set to true. If there are no node with ingest set to true based on the current cluster state, an exception will be returned and the request will fail. Note that in case there are no ingest nodes and bulk has a pipeline id specified only for a subset of index requests, the whole bulk will fail.
Now that the ingest infra is part of es core we can remove some code that was required by the plugin and have a better integration with es core. We allow to specify the pipeline id in bulk and index as a request parameter, we have a REST filter that parses it and adds it to the relevant action request. That is not required anymore, as we can add this logic to RestIndexAction and RestBulkAction directly, no need for a filter. Also, we can allow to specify a pipeline id for each index requests in a bulk request. The small downside of this is that the ingest filter has to go over each item of a bulk request, all the time, to figure out whether they have a pipeline id.
CRUD and simulate apis work now fine, every node has the pipelines in memory, but node.ingest disables ingestion, meaning that any index or bulk request with a pipeline id is going to fail
We will keep this abstractions as it's convenient, otherwise IngestDocument would depend on ScriptService directly, and would explicitly rely on mustache which is not even part of core. better to have the interface in core, and the impl as part of the ingest plugin, which relies on mustache, shipped with core by default.
Boaz Leskes
Jason Tedor
Nik Everett
David Pilato
Alexander Reelsen
Britta Weber
Martijn van Groningen
Jim Ferenczi
Simon Willnauer
Tal Levy
Ryan Ernst
Lee Hinman
Tanguy Leroux
GUILLAUME GROSSETIE
Simon Willnauer
Robert Muir
Robert Muir
Clinton Gormley
Gabriel Moskovicz
Adrien Grand
Jack Conradson
javanna
Yannick Welsch
Daniel Mitterdorfer