[DEV] open new 1.5 development branch
This new branch is based on 1.4.6, which 1.5-dev0 is 100% equivalent to. The roadmap has been updated.
This commit is contained in:
Willy Tarreau
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ChangeLog :
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===========
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2010/05/23 : 1.5-dev0
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- exact copy of 1.4.6
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2010/05/16 : 1.4.6
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- [BUILD] ebtree: update to v6.0.1 to remove references to dprintf()
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- [CLEANUP] acl: make use of eb_is_empty() instead of open coding the tree's emptiness test
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155
ROADMAP
155
ROADMAP
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'+' = done, '-' = todo, '*' = done except doc
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Medium-long term roadmap - 2010/04/10
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1.2.12 :
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+ weighted RR/SH
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Legend: '+' = done, '-' = todo, '*' = done except doc
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1.2.13 :
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+ maxconn
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+ queueing
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1.5 (ETA 2010/12/31) :
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- server-side HTTP keepalive
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1.2.14 :
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+ HTML status page
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- return-html code xxx [ file "xxx" | text "xxx" ] if <acl>
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stats enable
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stats uri /?stats
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stats realm w.ods.org\ statistics
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stats auth user1:pass1
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stats auth user2:pass2
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stats auth user3:pass3
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stats scope <px_id> | '.'
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- return-raw [ file "xxx" | text "xxx" ] if <acl>
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+ allow server-less proxies (for stats)
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- add support for client-side and server-side unix sockets
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- separate timeout controls
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- try to remove srv==NULL internally and assign a dummy server to each backend
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for dispatch, http_proxy and transparent modes.
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+ option 'abortonclose' : if the session is queued or being connecting
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to the server, and the client sends a shutdown(), then decide to abort
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the session early because in most situations, this will be caused by
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a client hitting the 'Stop' button, so there's no reason to overload
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the servers with unservable requests. However, this is not HTTP compliant
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and might cause little trouble to some very specific clients used to
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close immediately after sending the request (no support for KA, which ones?)
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- rename L4 acls as L6 ACLs when some content is involved
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+ minconn : makes the server's maxconn dynamic, which will be computed as a
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ratio of the proxy's sessions :
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srv->effective_maxconn =
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max(srv->maxconn * px->nbsess / px->maxconn, srv->minconn)
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- add new L4 ACL checks immediately after accept, before even allocating the
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buffers ("connection {accept|reject|delay|freeze} {if|unless}").
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1.2.15 :
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+ monitor-uri : specify an URI for which we will always return 'HTTP/1.0 200'
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and never forward nor log it.
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- implement support for "connection freeze" after accept. A list of frozen
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connections should be maintained so that it is possible to recycle them
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when new file descriptors are required.
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+ option ssl-hello-chk : send SSLv3 client hello messages to check the servers
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- support for time-ordered priority queues with ability to add an offset
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based on request matching. Each session will have one ebtree node to be
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attached to whatever queue the session is waiting in.
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1.3 :
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- remove unused STATTIME
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- assign a nice priority based on ACLs.
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- reference all the include files that must be created, possibly under subdirs :
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- pattern extraction is needed for ACLs and stickiness. It would work like
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this :
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- acl.h => more general ACL work
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- appcook.h => appsession-related cookies
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- backend.h => back-end part of the PR_O_* + backend definitions
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- buffers.h => buffer management relying on memory.h
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- capture.h => header and cookie capture
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- cfgparse.h => configuration parser
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- checks.h => health checks
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- clireq.h => the client side "request" part of the current sessions.
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- compat.h => compatibility with other OSes (TCP_NODELAY, ...)
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- config.h => config parameters, renamed CONFIG_HAP_*, includes defaults.h
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- controls.h => SN_CACHEABLE, ...
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- cookies.h => definitions related to cookie management + SN_SCK_*
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- defaults.h => many default values, might disappear soon after cleanup
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- frontend.h => front-end part of the PR_O_* + client definitions + listeners
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- global.h => shared global variables
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- http.h => HTTP state definitions and transitions
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- httperr.{hc} => HTTP return codes
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- libtask.h => task scheduler
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- libtime.h => time-related definitions
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- loadbal.h => load balancing algorithms
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- log.h => log definitions
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- memory.h => pools
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- polling.h => definitions of select(), poll(), INTBITS, ...
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- queue.h => queue management
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- regex.h => filtering
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- servers.h => servers definitions (SRV_*, states, ...)
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- fd.h => FD_ST* (add FD_DGRAM), RES_*, socket states, etc...
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- srvreq.h => the server side "request" part of the current sessions.
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- standard.h => general purpose macros and defines (eg: MIN/MAX, ...)
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- startup.h => MODE_*
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- tuning.h => platform-specific tuning parameters
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acl <name> <pattern> [-i] <values>...
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All ACL fetch method currently available would be transformed into pattern
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extraction methods. That way we could stick on hdr(x-forwarded-for) or use
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source 0.0.0.0 usesrc <pattern> (such as "hdr_ip(headername)"). Note that
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ACLs sometimes need iterative matching/extraction.
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- add support for complex pattern extraction rules :
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pattern = <pattern_term>
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| '{' pattern_expr '}'
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pattern_expr = <pattern_term> [ <transform> ... ]
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- support loading data sets from files
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+ present/not present (eg: netmasks)
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- pattern conversion per prefixes. Eg: convert src IP to country.
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- make new patterns available based on stickiness matching :
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- number of entries in table for the matched pattern
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- same after having increased the match counter
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- add support for concurrency match in tables
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- just like stickiness, but counted per session (or request), increased
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on first match and decreased at end of request or connection. This
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requires that the session has a list of matched terms that must be
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released at the end.
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1.6 (will probably change anyway) :
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- wait on resource (mem, socket, server's conn, server's rate, ...)
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- bandwidth limits
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- create internal services and make stats, CLI, etc... part of that.
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- use_server ... if ...
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- buddy servers to build defined lists of failovers. Detect loops during
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the config check.
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server XXX buddy YYY
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server YYY # may replace XXX when XXX fails
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- spare servers : servers which are used in LB only when a minimum farm
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weight threshold is not satisfied anymore. Useful for inter-site LB with
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local pref by default.
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Old, maybe obsolete points
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- clarify licence by adding a 'MODULE_LICENCE("GPL")' or something equivalent.
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- handle half-closed connections better (cli/srv would not distinguish
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DATA/SHUTR/SHUTW, it would be a session flag which would tell shutr/shutw).
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Check how it got changed in httpterm.
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- 3 memory models : failsafe (prealloc), normal (current), optimal (alloc on
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demand)
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- wait queues replaced for priority-based trees
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- ability to assign a task priority based on L7 matching
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- ability to assign a prio based on L7 matching
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- prio-based O(1) scheduler
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- maxconn reserve for VIP/admins
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- implement support for event-triggerred epoll()
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- verify if it would be worth implementing an epoll_ctl_batch() for Linux
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- balance LC/WLC (patch available)
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- option minservers XXX : activates some backup servers when active servers
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- option minservers XXX : activates some spare servers when active servers
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are insufficient
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- monitor minservers XXX : monitor-net and monitor-uri could report a failure
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when the number of active servers is below this threshold.
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- option smtp-chk : use SMTP health checks (avoid logs if possible)
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- new keyword 'check' : check http xxx, check smtp xxx, check ssl-hello
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@ -2,9 +2,9 @@
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HAProxy
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Configuration Manual
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----------------------
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version 1.4.6
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version 1.5
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willy tarreau
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2010/05/16
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2010/05/23
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This document covers the configuration language as implemented in the version
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@ -1,6 +1,6 @@
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Summary: HA-Proxy is a TCP/HTTP reverse proxy for high availability environments
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Name: haproxy
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Version: 1.4.6
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Version: 1.5-dev0
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Release: 1
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License: GPL
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Group: System Environment/Daemons
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@ -76,6 +76,9 @@ fi
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%attr(0755,root,root) %config %{_sysconfdir}/rc.d/init.d/%{name}
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%changelog
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* Sun May 23 2010 Willy Tarreau <w@1wt.eu>
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- updated to 1.5-dev0
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* Sun May 16 2010 Willy Tarreau <w@1wt.eu>
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- updated to 1.4.6
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