This option makes haproxy preserve any persistence cookie emitted by
the server, which allows the server to change it or to unset it, for
instance, after a logout request.
(cherry picked from commit 52e6d75374c7900c1fe691c5633b4ae029cae8d5)
This match returns true when the request calling it is the first one of
a connection.
(cherry picked from commit 922ca979c50653c415852531f36fe409190ad76b)
The MySQL check has been revamped to be able to send real MySQL data,
and to avoid Aborted connects on MySQL side.
It is however backward compatible with older version, but it is highly
recommended to use the new mode, by adding "user <username>" on the
"mysql-check" line.
The new check consists in sending two MySQL packet, one Client
Authentication packet, with "haproxy" username (by default), and one
QUIT packet, to correctly close MySQL session. We then parse the Mysql
Handshake Initialisation packet and/or Error packet. It is a basic but
useful test which does not produce error nor aborted connect on the
server.
(cherry picked from commit a1e4dcfe5718311b7653d7dabfad65c005d0439b)
- fix some erroneous keywords for http-request
- stats http-request was not documented
--
Cyril Bonté
(cherry picked from commit 17e07dad5074571c38cbeb92d54a20f83658449d)
HTTP content-based health checks will be involved in searching text in pages.
Some pages may not fit in the default buffer (16kB) and sometimes it might be
desired to have larger buffers in order to find patterns. Running checks on
smaller URIs is always preferred of course.
(cherry picked from commit 043f44aeb835f3d0b57626c4276581a73600b6b1)
This patch adds the "http-check expect [r]{string,status}" statements
which enable health checks based on whether the response status or body
to an HTTP request contains a string or matches a regex.
This probably is one of the oldest patches that remained unmerged. Over
the time, several people have contributed to it, among which FinalBSD
(first and second implementations), Nick Chalk (port to 1.4), Anze
Skerlavaj (tests and fixes), Cyril Bonté (general fixes), and of course
myself for the final fixes and doc during integration.
Some people already use an old version of this patch which has several
issues, among which the inability to search for a plain string that is
not at the beginning of the data, and the inability to look for response
contents that are provided in a second and subsequent recv() calls. But
since some configs are already deployed, it was quite important to ensure
a 100% compatible behaviour on the working cases.
Thus, that patch fixes the issues while maintaining config compatibility
with already deployed versions.
(cherry picked from commit b507c43a3ce9a8e8e4b770e52e4edc20cba4c37f)
This patch provides a new "option ldap-check" statement to enable
server health checks based on LDAPv3 bind requests.
(cherry picked from commit b76b44c6fed8a7ba6f0f565dd72a9cb77aaeca7c)
Some configs may involve httpclose in a frontend and http-pretend-keepalive
in a backend. httpclose used to take priority over keepalive, thus voiding
its effect. This change ensures that when both are combined, keepalive is
still announced to the server while close is announced to the client.
(cherry picked from commit 2be7ec90fa9caf66294f446423bbab2d00db9004)
The doc was wrong as the insert mode by default does not insert in
direct requests, and by default transmits the cookies to the server.
This was right in the old doc and it has not changed since the
beginning.
Released version 1.5-dev2 with the following main changes :
- [MINOR] startup: release unused structs after forking
- [MINOR] startup: don't wait for nothing when no old pid remains
- [CLEANUP] reference product branch 1.5
- [MEDIUM] signals: add support for registering functions and tasks
- [MEDIUM] signals: support redistribution of signal zero when stopping
- [BUG] http: don't set auto_close if more data are expected
Released version 1.5-dev1 with the following main changes :
- [BUG] stats: session rate limit gets garbaged in the stats
- [DOC] mention 'option http-server-close' effect in Tq section
- [DOC] summarize and highlight persistent connections behaviour
- [DOC] add configuration samples
- [BUG] http: dispatch and http_proxy modes were broken for a long time
- [BUG] http: the transaction must be initialized even in TCP mode
- [BUG] tcp: dropped connections must be counted as "denied" not "failed"
- [BUG] consistent hash: balance on all servers, not only 2 !
- [CONTRIB] halog: report per-server status codes, errors and response times
- [BUG] http: the transaction must be initialized even in TCP mode (part 2)
- [BUG] client: always ensure to zero rep->analysers
- [BUG] session: clear BF_READ_ATTACHED before next I/O
- [BUG] http: automatically close response if req is aborted
- [BUG] proxy: connection rate limiting was eating lots of CPU
- [BUG] http: report correct flags in case of client aborts during body
- [TESTS] refine non-regression tests and add 4 new tests
- [BUG] debug: wrong pointer was used to report a status line
- [BUG] debug: correctly report truncated messages
- [DOC] document the "dispatch" keyword
- [BUG] stick_table: fix possible memory leak in case of connection error
- [CLEANUP] acl: use 'L6' instead of 'L4' in ACL flags relying on contents
- [MINOR] accept: count the incoming connection earlier
- [CLEANUP] tcp: move some non tcp-specific layer6 processing out of proto_tcp
- [CLEANUP] client: move some ACLs away to their respective locations
- [CLEANUP] rename client -> frontend
- [MEDIUM] separate protocol-level accept() from the frontend's
- [MINOR] proxy: add a list to hold future layer 4 rules
- [MEDIUM] config: parse tcp layer4 rules (tcp-request accept/reject)
- [MEDIUM] tcp: check for pure layer4 rules immediately after accept()
- [OPTIM] frontend: tell the compiler that errors are unlikely to occur
- [MEDIUM] frontend: check for LI_O_TCP_RULES in the listener
- [MINOR] frontend: only check for monitor-net rules if LI_O_CHK_MONNET is set
- [CLEANUP] buffer->cto is not used anymore
- [MEDIUM] session: finish session establishment sequence in with I/O handlers
- [MEDIUM] session: initialize server-side timeouts after connect()
- [MEDIUM] backend: initialize the server stream_interface upon connect()
- [MAJOR] frontend: don't initialize the server-side stream_int anymore
- [MEDIUM] session: move the conn_retries attribute to the stream interface
- [MEDIUM] session: don't assign conn_retries upon accept() anymore
- [MINOR] frontend: rely on the frontend and not the backend for INDEPSTR
- [MAJOR] frontend: reorder the session initialization upon accept
- [MINOR] proxy: add an accept() callback for the application layer
- [MAJOR] frontend: split accept() into frontend_accept() and session_accept()
- [MEDIUM] stats: rely on the standard session_accept() function
- [MINOR] buffer: refine the flags that may wake an analyser up.
- [MINOR] stream_sock: don't dereference a non-existing frontend
- [MINOR] session: differenciate between accepted connections and received connections
- [MEDIUM] frontend: count the incoming connection earlier
- [MINOR] frontend: count denied TCP requests separately
- [CLEANUP] stick_table: add/clarify some comments
- [BUILD] memory: add a few missing parenthesis to the pool management macros
- [MINOR] stick_table: add support for variable-sized data
- [CLEANUP] stick_table: rename some stksess struct members to avoid confusion
- [CLEANUP] stick_table: move pattern to key functions to stick_table.c
- [MEDIUM] stick_table: add room for extra data types
- [MINOR] stick_table: add support for "conn_cum" data type.
- [MEDIUM] stick_table: don't overwrite data when storing an entry
- [MINOR] config: initialize stick tables after all the parsing
- [MINOR] stick_table: provide functions to return stksess data from a type
- [MEDIUM] stick_table: move the server ID to a generic data type
- [MINOR] stick_table: enable it for frontends too
- [MINOR] stick_table: export the stick_table_key
- [MINOR] tcp: add per-source connection rate limiting
- [MEDIUM] stick_table: separate storage and update of session entries
- [MEDIUM] stick-tables: add a reference counter to each entry
- [MINOR] session: add a pointer to the tracked counters for the source
- [CLEANUP] proto_tcp: make the config parser a little bit more flexible
- [BUG] config: report the correct proxy type in tcp-request errors
- [MINOR] config: provide a function to quote args in a more friendly way
- [BUG] stick_table: the fix for the memory leak caused a regression
- [MEDIUM] backend: support servers on 0.0.0.0
- [BUG] stick-table: correctly refresh expiration timers
- [MEDIUM] stream-interface: add a ->release callback
- [MINOR] proxy: add a "parent" member to the structure
- [MEDIUM] session: make it possible to call an I/O handler on both SI
- [MINOR] tools: add a fast div64_32 function
- [MINOR] freq_ctr: add new types and functions for periods different from 1s
- [MINOR] errors: provide new status codes for config parsing functions
- [BUG] http: denied requests must not be counted as denied resps in listeners
- [MINOR] tools: add a get_std_op() function to parse operators
- [MEDIUM] acl: make use of get_std_op() to parse intger ranges
- [MAJOR] stream_sock: better wakeup conditions on read()
- [BUG] session: analysers must be checked when SI state changes
- [MINOR] http: reset analysers to listener's, not frontend's
- [MEDIUM] session: support "tcp-request content" rules in backends
- [BUILD] always match official tags when doing git-tar
- [MAJOR] stream_interface: fix the wakeup conditions for embedded iohandlers
- [MEDIUM] buffer: make buffer_feed* support writing non-contiguous chunks
- [MINOR] tcp: src_count acl does not have a permanent result
- [MAJOR] session: add track-counters to track counters related to the session
- [MINOR] stick-table: provide a table lookup function
- [MINOR] stick-table: use suffix "_cnt" for cumulated counts
- [MEDIUM] session: move counter ACL fetches from proto_tcp
- [MEDIUM] session: add concurrent connections counter
- [MEDIUM] session: add data in and out volume counters
- [MINOR] session: add the trk_conn_cnt ACL keyword to track connection counts
- [MEDIUM] session-counters: automatically update tracked connection count
- [MINOR] session: add the trk_conn_cur ACL keyword to track concurrent connection
- [MINOR] session: add trk_kbytes_* ACL keywords to track data size
- [MEDIUM] session: add a counter on the cumulated number of sessions
- [MINOR] config: support a comma-separated list of store data types in stick-table
- [MEDIUM] stick-tables: add support for arguments to data_types
- [MEDIUM] stick-tables: add stored data argument type checking
- [MEDIUM] session counters: add conn_rate and sess_rate counters
- [MEDIUM] session counters: add bytes_in_rate and bytes_out_rate counters
- [MINOR] stktable: add a stktable_update_key() function
- [MINOR] session-counters: add a general purpose counter (gpc0)
- [MEDIUM] session-counters: add HTTP req/err tracking
- [MEDIUM] stats: add "show table [<name>]" to dump a stick-table
- [MEDIUM] stats: add "clear table <name> key <value>" to clear table entries
- [CLEANUP] stick-table: declare stktable_data_types as extern
- [MEDIUM] stick-table: make use of generic types for stored data
- [MINOR] stats: correctly report errors on "show table" and "clear table"
- [MEDIUM] stats: add the ability to dump table entries matching criteria
- [DOC] configuration: document all the new tracked counters
- [DOC] stats: document "show table" and "clear table"
- [MAJOR] session-counters: split FE and BE track counters
- [MEDIUM] tcp: accept the "track-counters" in "tcp-request content" rules
- [MEDIUM] session counters: automatically remove expired entries.
- [MEDIUM] config: replace 'tcp-request <action>' with "tcp-request connection"
- [MEDIUM] session-counters: make it possible to count connections from frontend
- [MINOR] session-counters: use "track-sc{1,2}" instead of "track-{fe,be}-counters"
- [MEDIUM] session-counters: correctly unbind the counters tracked by the backend
- [CLEANUP] stats: use stksess_kill() to remove table entries
- [DOC] update the references to session counters and to tcp-request connection
- [DOC] cleanup: split a few long lines
- [MEDIUM] http: forward client's close when abortonclose is set
- [BUG] queue: don't dequeue proxy-global requests on disabled servers
- [BUG] stats: global stats timeout may be specified before stats socket.
- [BUG] conf: add tcp-request content rules to the correct list
It began to be problematic to have "tcp-request" followed by an
immediate action, as sometimes it was a keyword indicating a hook
or setting ("content" or "inspect-delay") and sometimes it was an
action.
Now the prefix for connection-level tcp-requests is "tcp-request connection"
and the ones processing contents remain "tcp-request contents".
This has allowed a nice simplification of the config parser and to
clean up the doc a bit. Also now it's a bit more clear why tcp-request
connection are not allowed in backends.
The following statements and ACLs have been added to the doc :
- tcp-request track-counters <key> [table <table>] [{if | unless} <condition>]
- src_*
- trk_*
The "_cnt" suffix is already used by ACLs to count various data,
so it makes sense to use the same one in "conn_cnt" instead of
"conn_cum" to count cumulated connections.
This is not a problem because no version was emitted with those
keywords.
Thus we'll try to stick to the following rules :
xxxx_cnt : cumulated event count for criterion xxxx
xxxx_cur : current number of concurrent entries for criterion xxxx
xxxx_rate: event rate for criterion xxxx
Sometimes it's necessary to be able to perform some "layer 6" analysis
in the backend. TCP request rules were not available till now, although
documented in the diagram. Enable them in backend now.
Till now when a server was configured with address 0.0.0.0, the
connection was forwarded to this address which generally is intercepted
by the system as a local address, so this was completely useless.
One sometimes useful feature for outgoing transparent proxies is to
be able to forward the connection to the same address the client
requested. This patch fixes the meaning of 0.0.0.0 precisely to
ensure that the connection will be forwarded to the initial client's
destination address.
configuration.txt is thorough and accurate but lacked sample configurations
clarifying both the syntax and the relations between global, defaults,
frontend, backend and listen sections. Besides, almost all examples to be found
in haproxy-en.txt or online tutorials make use of the 'listen' syntax while
'frontend/backend' is really the one to know about.
(cherry picked from commit 01ac10ad189b11c563eeb835733fba58e6c5271d)
This change makes use of the stick-tables to keep track of any source
address activity. Two ACLs make it possible to check the count of an
entry or update it and act accordingly. The typical usage will be to
reject a TCP request upon match of an excess value.
This one can be parsed on the "stick-table" after with the "store"
keyword. It will hold the number of connections matching the entry,
for use with ACLs or anything else.
The stick_tables will now be able to store extra data for a same key.
A limited set of extra data types will be defined and for each of them
an offset in the sticky session will be assigned at startup time. All
of this information will be stored in the stick table.
The extra data types will have to be specified after the new "store"
keyword of the "stick-table" directive, which will reserve some space
for them.
It's very disturbing to see the "denied req" counter increase without
any other session counter moving. In fact, we can't count a rejected
TCP connection as "denied req" as we have not yet instanciated any
session at all. Let's use a new counter for that.
Released version 1.4.6 with the following main changes :
- [BUILD] ebtree: update to v6.0.1 to remove references to dprintf()
- [CLEANUP] acl: make use of eb_is_empty() instead of open coding the tree's emptiness test
- [MINOR] acl: add srv_is_up() to check that a specific server is up or not
- [DOC] add a few precisions about the use of RDP cookies
RDP cookies are not necessarily easy to implement because they require
some configuration on the servers. Add a few hints so that people know
what to check on their servers.
This ACL was missing in complex setups where the status of a remote site
has to be considered in switching decisions. Until there, using a server's
status in an ACL required to have a dedicated backend, which is a bit heavy
when multiple servers have to be monitored.
Released version 1.4.5 with the following main changes :
- [DOC] report minimum kernel version for tproxy in the Makefile
- [MINOR] add the "ignore-persist" option to conditionally ignore persistence
- [DOC] add the "ignore-persist" option to conditionally ignore persistence
- [DOC] fix ignore-persist/force-persist documentation
- [BUG] cttproxy: socket fd leakage in check_cttproxy_version
- [DOC] doc/configuration.txt: fix typos
- [MINOR] option http-pretend-keepalive is both for FEs and BEs
- [MINOR] fix possible crash in debug mode with invalid responses
- [MINOR] halog: add support for statisticts on status codes
- [OPTIM] halog: use a faster zero test in fgets()
- [OPTIM] halog: minor speedup by using unlikely()
- [OPTIM] halog: speed up fgets2-64 by about 10%
- [DOC] refresh the README file and merge the CONTRIB file into it
- [MINOR] acl: support loading values from files
- [MEDIUM] ebtree: upgrade to version 6.0
- [MINOR] acl trees: add flags and union members to store values in trees
- [MEDIUM] acl: add ability to insert patterns in trees
- [MEDIUM] acl: add tree-based lookups of exact strings
- [MEDIUM] acl: add tree-based lookups of networks
- [MINOR] acl: ignore empty lines and comments in pattern files
- [MINOR] stick-tables: add support for "stick on hdr"
It is now possible to stick on an IP address found in a HTTP header. Right
now only the last occurrence of the header can be used, which is generally
enough for most uses. Also, the header extraction rule only knows how to
convert the header to IP. Later it will be usable as a plain string with
an implicit conversion, and the syntax will not change.
Most often, pattern files used by ACLs will be produced by tools
which emit some comments (eg: geolocation lists). It's very annoying
to have to clean the files before using them, and it does not make
much sense to be able to support patterns we already can't input in
the config file. So this patch makes the pattern file loader skip
lines beginning with a sharp and the empty ones, and strips leading
spaces and tabs.
