On 07/12/2017 07:41 μμ, Willy Tarreau wrote: > Hi Pavlos! > > On Thu, Dec 07, 2017 at 07:16:54PM +0100, Pavlos Parissis wrote: >> Hi, >> >> OK, I haven't read the ML for ~2 weeks and a quick scan didn't reveal >> anything. >> So, here I am asking something that may have been addressed already. >> >> Today, I decided to switch my dev env to haproxy-1.8 using current master >> and I >> started haproxy in the same way as I have been doing with older releases: >> >> sudo ./haproxy -f /etc/haproxy/haproxy-ams4-dc.cfg >> [WARNING] 340/173007 (3104) : parsing [/etc/haproxy/haproxy-ams4-dc.cfg:103] >> : a >> 'http-request' rule placed after a 'use_backend' rule will still be >> processed before. >> >> above it didn't return and wasn't printing, expect the warning. I curled >> against >> the IPs and got back connection error, see attached file for process output, >> lsof >> info, build verion and haproxy.cfg. >> >> I also started in the way it is mentioned in section 3 of management >> document: >> sudo ./haproxy -f /etc/haproxy/haproxy-ams4-dc.cfg -D -p >> /run/haproxy-ams4.pid >> -sf $(cat /run/haproxy-ams4.pid) >> cat: /run/haproxy-ams4.pid: No such file or directory >> [WARNING] 340/173007 (3104) : parsing [/etc/haproxy/haproxy-ams4-dc.cfg:103] >> : a >> 'http-request' rule placed after a 'use_backend' rule will still be >> processed before. >> >> but same result, haproxy didn't return and I had to CTRL-C it. >> >> I am pretty sure I am doing something stupid but I can't find it. >> >> Any ideas? > > It looks like it doesn't finish to startup in fact. Are you seeing it spin > on the CPU maybe ?
Yes, it does. I am sorry but I didn't notice it > Otherwise probably that starting it by hand in gdb and > stopping it to see what it's doing will help. > pparissis at poseidonas in ~/repo/haproxy-1.8 on (master u=) sudo gdb ./haproxy GNU gdb (Debian 7.12-6) 7.12.0.20161007-git Copyright (C) 2016 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from ./haproxy...done. (gdb) run -f /etc/haproxy/haproxy-ams4-dc.cfg Starting program: /home/pparissis/repo/haproxy-1.8/haproxy -f /etc/haproxy/haproxy-ams4-dc.cfg [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [WARNING] 340/221611 (13628) : parsing [/etc/haproxy/haproxy-ams4-dc.cfg:103] : a 'http-request' rule placed after a 'use_backend' rule will still be processed before. ^C Program received signal SIGINT, Interrupt. 0x000055555562e302 in register_name (name=0x5555558ee294 "selected_dc_backup", len=18, scope=scope@entry=0x7fffffffd83c, alloc=alloc@entry=1, err=0x7fffffffdb28) at src/vars.c:215 215 HA_RWLOCK_WRLOCK(VARS_LOCK, &var_names_rwlock); (gdb) bt full #0 0x000055555562e302 in register_name (name=0x5555558ee294 "selected_dc_backup", len=18, scope=scope@entry=0x7fffffffd83c, alloc=alloc@entry=1, err=0x7fffffffdb28) at src/vars.c:215 i = <optimized out> var_names2 = <optimized out> tmp = <optimized out> res = 0x0 #1 0x000055555562f489 in vars_check_arg (arg=0x5555558ee600, err=<optimized out>) at src/vars.c:502 name = <optimized out> scope = SCOPE_REQ err = <optimized out> arg = 0x5555558ee600 #2 0x0000555555609b94 in sample_parse_expr (str=str@entry=0x5555558ee598, idx=idx@entry=0x7fffffffd964, file=file@entry=0x5555558df420 "/etc/haproxy/haproxy-ams4-dc.cfg", line=line@entry=106, err_msg=err_msg@entry=0x7fffffffdb28, al=al@entry=0x5555558e85d8) at src/sample.c:901 begw = <optimized out> endw = 0x5555558df4c2 "req.selected_dc_backup)" endt = 0x5555558df4d8 ")" expr = 0x5555558ee5c0 fetch = 0x5555558ade30 <sample_fetch_keywords+16> conv = <optimized out> prev_type = 6 fkw = 0x5555558ee2f0 "var" ckw = 0x0 err_arg = 1 #3 0x0000555555630144 in parse_acl_expr (args=args@entry=0x5555558ee598, err=err@entry=0x7fffffffdb28, al=al@entry=0x5555558e85d8, file=file@entry=0x5555558df420 "/etc/haproxy/haproxy-ams4-dc.cfg", line=106) at src/acl.c:351 expr = <optimized out> aclkw = 0x0 refflags = <optimized out> patflags = <optimized out> arg = <optimized out> smp = 0x0 idx = 0 ckw = 0x0 begw = <optimized out> endw = <optimized out> endt = <optimized out> cur_type = <optimized out> nbargs = <optimized out> operator = 2 op = <optimized out> contain_colon = <optimized out> have_dot = <optimized out> dot = <optimized out> value = 3 minor = 40 buffer = "\000\000\000\000\000\000\000\000\003\000\000\000\060", '\000' <repeats 19 times>, "[\000\000\000n\000\000\000\000" is_loaded = <optimized out> unique_id = <optimized out> error = 0x50 <error: Cannot access memory at address 0x50> ref = <optimized out> pattern_expr = <optimized out> load_as_map = 0 acl_conv_found = 0 #4 0x0000555555630e50 in parse_acl (args=args@entry=0x5555558ee590, known_acl=known_acl@entry=0x5555558e6de8, err=err@entry=0x7fffffffdb28, al=al@entry=0x5555558e85d8, file=file@entry=0x5555558df420 "/etc/haproxy/haproxy-ams4-dc.cfg", line=line@entry=106) at src/acl.c:725 cur_acl = <optimized out> acl_expr = <optimized out> name = <optimized out> pos = <optimized out> #5 0x0000555555631293 in parse_acl_cond (args=0x7fffffffdc68, known_acl=0x5555558e6de8, pol=<optimized out>, err=err@entry=0x7fffffffdb28, al=al@entry=0x5555558e85d8, file=file@entry=0x5555558df420 "/etc/haproxy/haproxy-ams4-dc.cfg", line=106) at src/acl.c:976 arg_end = 6 args_new = 0x5555558ee590 arg = <optimized out> neg = 0 word = <optimized out> cur_acl = <optimized out> cur_term = <optimized out> cur_suite = 0x5555558ee450 cond = 0x5555558ee400 suite_val = 524287 #6 0x0000555555631611 in build_acl_cond (file=file@entry=0x5555558df420 "/etc/haproxy/haproxy-ams4-dc.cfg", line=line@entry=106, known_acl=<optimized out>, px=0x5555558e6db0, args=<optimized out>, args@entry=0x7fffffffdc60, err=err@entry=0x7fffffffdb28) at src/acl.c:1079 pol = <optimized out> cond = 0x0 #7 0x00005555555a5351 in cfg_parse_listen (file=0x5555558df420 "/etc/haproxy/haproxy-ams4-dc.cfg", linenum=106, args=0x7fffffffdc50, kwm=<optimized out>) at src/cfgparse.c:3969 rule = <optimized out> curproxy = 0x5555558e6db0 err = <optimized out> error = 0x5555558dfc60 "\210$\255\373\377\177" rc = 0 val = 0 err_code = 0 cond = 0x0 tmplogsrv = <optimized out> errmsg = 0x0 #8 0x00005555555ad153 in readcfgfile (file=0x5555558df420 "/etc/haproxy/haproxy-ams4-dc.cfg") at src/cfgparse.c:7431 kwm = <optimized out> end = <optimized out> line = <optimized out> dquote = <optimized out> arg = <optimized out> args = {0x5555558df454 "use_backend", 0x5555558df460 "www.booking.com_http_lhr4", 0x5555558df47a "if", 0x5555558df47d "www.booking.com_http_ams4_down", 0x5555558df49c "!www.booking.com_http_lhr4_down", 0x5555558df4bc "{", 0x5555558df4be "var(req.selected_dc_backup)", 0x5555558df4da "eq", 0x5555558df4dd "0", 0x5555558df4df "}", 0x5555558df4e0 "" <repeats 55 times>} squote = <optimized out> thisline = 0x5555558df450 " use_backend" linesize = 2048 f = 0x5555558dfc60 linenum = <optimized out> err_code = 1 cs = 0x5555558d2540 pcs = 0x5555558d2540 ics = <optimized out> readbytes = <optimized out> #9 0x00005555555f056d in init (argc=<optimized out>, argv=<optimized out>) at src/haproxy.c:1503 ret = <optimized out> arg_mode = <optimized out> tmp = <optimized out> cfg_pidfile = <optimized out> err_code = 0 err_msg = 0x0 wl = 0x5555558df400 progname = 0x7fffffffe4e1 "haproxy" change_dir = <optimized out> px = <optimized out> pcf = <optimized out> #10 0x000055555556ddab in main (argc=<optimized out>, argv=0x7fffffffe278) at src/haproxy.c:2448 ---Type <return> to continue, or q <return> to quit--- err = <optimized out> retry = <optimized out> limit = {rlim_cur = 140737488347800, rlim_max = 140737488347768} errmsg = "\002\000\000\000\000\000\000\000\003\000\000\000\062\000\000\000 \000\000\000\000\000\000\000P", '\000' <repeats 15 times>, "\003\000\000\000\060", '\000' <repeats 19 times>, "[\000\000\000n", '\000' <repeats 19 times>, "w\000\000\000|\000\000\000p/\000" pidfd = -1 (gdb) (gdb) I hope it uses useful, Pavlos
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