March 2012 - syslog-ng - lists.balabit.hu

Output to file in /proc
by Valentijn Sessink 13 Dec '13

13 Dec '13

Hello list, As most of the functionality of "sshguard", "fail2ban" and others is in syslog-ng, I'm trying to use syslog-ng to add entries to my Linux kernel based firewall (iptables). I'm almost ready to implement one, but I have a question about undeliverable log lines: what happens if a certain file() destination blocks? Will syslog-ng retry to deliver the same message, or will it lose the message? What I'm doing is using the "ipt_recent" module; with this module, one can check if a certain IP address was seen before. For example, the following rule will block you if you were seen 5 or more times ("hitcount 5") in the "violators" list last minute ("seconds 60): iptables -A INPUT -m recent \ --rcheck --hitcount 5 --seconds 60 --name violators -j DROP The fun part is, that you can add IP adresses by stuffing them into a file in /proc: echo '+127.0.0.1' > /proc/net/xt_recent/violators ... will add 127.0.0.1 to the "violators" with the current time. However: echo 'whatever' > /proc/net/xt_recent/violators ... gives an error: Invalid argument (22) As far as I can see, syslog-ng will not try again to deliver the same message; but is this by design? I.e. can I trust syslog-ng to not "block" because of a single malformed IP address? Because then, an implementation of sshguard could be simply swapped with a simple: destination df_ipt_recent { file ("/proc/net/xt_recent/blocker" template("+${usracct.device}\n") ); }; filter f_ipt_recent { tags("secevt") and match("REJECT" value("secevt.verdict")); }; log { source (s_all); parser(pattern_db); filter(f_addtofirewall);destination(df_addtofirewall);}; ... which would be cool! Best regards, Valentijn

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[Bug 169] New: Feature Request - reconnect network also resolve dns name
by bugzilla＠bugzilla.balabit.com 10 Oct '13

10 Oct '13

https://bugzilla.balabit.com/show_bug.cgi?id=169 Summary: Feature Request - reconnect network also resolve dns name Product: syslog-ng Version: 3.3.x Platform: Other OS/Version: Linux Status: NEW Severity: normal Priority: unspecified Component: syslog-ng AssignedTo: bazsi(a)balabit.hu ReportedBy: erempel(a)uvic.ca Type of the Report: --- Estimated Hours: 0.0 When a network connection is dropped the destination name should be resolved via DNS prior to the reconnect. Every couple of years to renew the hardware supporting our core syslog service we move the IP name to a new host. The desired process is; 1. Build a new host and ensure that syslog-ng is running correctly. 2. Change the DNS for our central syslog server to the address of the new server. 3. Restart the syslog-ng service on the old syslog server. 4. All of the clients will loose the connection to the old syslog server. 5. All of the clients will reconnect to the *IP Name* in their configuration files. 6. Monitor the old syslog server to determine any hosts that have not made the transition. What really happened in step 5 was that all of the client reconnected to the old syslog server :-( To accomplish the switch over I had to visit 450 servers and manually restart the syslog service on the client. -- Configure bugmail: https://bugzilla.balabit.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching all bug changes.

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[Bug 155] New: Compilation failure in 3.3.3: the Darwin linker does not accept "--whole-archive"
by bugzilla＠bugzilla.balabit.com 26 Aug '13

26 Aug '13

https://bugzilla.balabit.com/show_bug.cgi?id=155 Summary: Compilation failure in 3.3.3: the Darwin linker does not accept "--whole-archive" Product: syslog-ng Version: 3.3.x Platform: Macintosh OS/Version: Mac OS Status: NEW Severity: normal Priority: unspecified Component: syslog-ng AssignedTo: bazsi(a)balabit.hu ReportedBy: jacknagel(a)gmail.com Type of the Report: bug Estimated Hours: 0.0 Trying to compile 3.3.3 on Mac OS X 10.6.8/XCode 4.2, I get this: libtool: link: /usr/bin/llvm-gcc -std=gnu99 -dynamiclib -o .libs/libsyslog-ng-3.3.3.dylib [...] ld: unknown option: --whole-archive collect2: ld returned 1 exit status some cursory googling reveals that the Darwin linker does not accept "--whole-archive". I'd be happy to help test a patch. -- Configure bugmail: https://bugzilla.balabit.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching all bug changes.

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[Bug 121] New: After service syslog-ng reload, the first log don' t transfer to remote servicer via TLS
by bugzilla＠bugzilla.balabit.com 08 Feb '13

08 Feb '13

https://bugzilla.balabit.com/show_bug.cgi?id=121 Summary: After service syslog-ng reload, the first log don't transfer to remote servicer via TLS Product: syslog-ng Version: 3.0.x Platform: PC OS/Version: Linux Status: NEW Severity: critical Priority: unspecified Component: syslog-ng AssignedTo: bazsi(a)balabit.hu ReportedBy: yong.zheng(a)nsn.com Type of the Report: bug Estimated Hours: 0.0 The version:syslog-ng 3.0.5 options { flush_lines (0); time_reopen (10); log_fifo_size (1000); long_hostnames (off); use_dns (yes); use_fqdn (no); create_dirs (no); keep_hostname (yes); stats_freq (3600); }; I will upload the logs to remote syslog-ng server via TLS, I encounter a issue, On client: after reload the configure via below command: #service syslog-ng reload. I write a log: #logger -p local1.info "this is test" but I don't see the log to transfer to server immediately, I wait many minutes, still don't see. I must write the second log to triger that client send the 2 logs to server #logger -p local1.info "this is test 2" the 2 logs have transfered to server immediately successfully, I can see the 2 logs on server. It is 100% reproduced. Is this a known issue, or not ? Thanks. -- Configure bugmail: https://bugzilla.balabit.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching all bug changes.

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[Bug 42] New: capabilities, chown, chmod
by bugzilla＠bugzilla.balabit.com 20 Dec '12

20 Dec '12

https://bugzilla.balabit.com/show_bug.cgi?id=42 Summary: capabilities, chown, chmod Product: syslog-ng Version: 3.0.x Platform: PC OS/Version: Linux Status: NEW Severity: normal Priority: unspecified Component: syslog-ng AssignedTo: bazsi(a)balabit.hu ReportedBy: zbyniu(a)pld-linux.org Type of the Report: bug Estimated Hours: 0.0 Let's take a look at syslog-ng-3.0.1/src/affile.c lines 60-83 1. CAP_SYS_ADMIN is needed only for /proc/kmsg, it is added w/o check 2. CAP_DAC_READ_SEARCH should be added only if open fail with errno 13 2a. CAP_DAC_OVERRIDE should be added only if open fail with errno 13 and with CAP_DAC_READ_SEARCH set 3. fchown needs CAP_CHOWN unconditionaly 4. fchmod needs CAP_FOWNER if file owner != euid (root here) 5. all caps should be restored summary: - CAP_SYS_ADMIN and CAP_DAC_OVERRIDE are set always even if unnecessary, and permanently - owner, group and perm doesn't work -- Configure bugmail: https://bugzilla.balabit.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching all bug changes.

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[Bug 151] New: syslog-ng opens /dev/ log device on every HUP without closing it first
by bugzilla＠bugzilla.balabit.com 08 Oct '12

08 Oct '12

https://bugzilla.balabit.com/show_bug.cgi?id=151 Summary: syslog-ng opens /dev/log device on every HUP without closing it first Product: syslog-ng Version: 3.3.x Platform: Other OS/Version: Solaris Status: NEW Severity: major Priority: unspecified Component: syslog-ng AssignedTo: bazsi(a)balabit.hu ReportedBy: michael.hocke(a)nyu.edu Type of the Report: bug Estimated Hours: 0.0 On Solaris 10 the /dev/log device can be held open concurrently for up to only 16 instances. syslog-ng opens a new instance of /dev/log after HUPing the process, i.e. after the 16th HUP syslog-ng quits because the new configuration fails and so does the previous configuration. This has been working fine in 3.0. I cannot test if this started to happen in 3.1, 3.2, or if this is new for 3.3. -- Configure bugmail: https://bugzilla.balabit.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching all bug changes.

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[Bug 161] New: Syslog-ng stops processing after reload
by bugzilla＠bugzilla.balabit.com 10 Sep '12

10 Sep '12

https://bugzilla.balabit.com/show_bug.cgi?id=161 Summary: Syslog-ng stops processing after reload Product: syslog-ng Version: 3.3.x Platform: PC OS/Version: Linux Status: NEW Severity: normal Priority: unspecified Component: syslog-ng AssignedTo: bazsi(a)balabit.hu ReportedBy: bugzilla.syslogng(a)feystorm.net Type of the Report: --- Estimated Hours: 0.0 syslog-ng version: 3.3.4 OS: RHEL 6.2 Whenever I issue a reload to our syslog-ng instance syslog-ng stops processing messages and sits there doing nothing. The issue only seems to occur when the server is processing a high log volume. This server is part of a 2-node active/passive HA group. So we have 2 servers with the exact same configuration. Whenever I issue the reload on the server that is not currently active, it works fine. I can issue a failover and the server that was able to reload fine now hangs. The active server in this HA group processes around 35,000 messages per second. I havent posted the config because it is fairly large, however I can if desired. The most notable thing in it is that threading is enabled. Below is the backtrace of syslog-ng stuck in this state. I took a gcore, so I can gather any additional information that is needed. Also, if I try to do a full backtrace ('where full') in gdb on any thread other than thread 5, gdb segfaults. Not sure if that has any relevance or not. (gdb) info threads 5 Thread 0x7fb9c654ab00 (LWP 11040) 0x000000353cedd967 in writev () from /lib64/libc.so.6 4 Thread 0x7fb9c25fb700 (LWP 11049) 0x000000353cee5d03 in epoll_wait () from /lib64/libc.so.6 3 Thread 0x7fb9c2ffc700 (LWP 11048) 0x000000353cee5d03 in epoll_wait () from /lib64/libc.so.6 2 Thread 0x7fb9c39fd700 (LWP 11046) 0x000000353cee5d03 in epoll_wait () from /lib64/libc.so.6 * 1 Thread 0x7fb9c43fe700 (LWP 11045) 0x000000353cee5d03 in epoll_wait () from /lib64/libc.so.6 (gdb) where #0 0x000000353cee5d03 in epoll_wait () from /lib64/libc.so.6 #1 0x00007fb9c65cfa3e in iv_epoll_poll (numfds=1, active=0x7fb9c43fb9a0, msec=10000) at iv_method_epoll.c:73 #2 0x00007fb9c65cf1bb in iv_main () at iv_main.c:265 #3 0x00007fb9c65d3c36 in iv_work_thread (_thr=0x14fc610) at iv_work.c:196 #4 0x00007fb9c65d42a8 in iv_thread_handler (_thr=0x14fc6e0) at iv_thread.c:100 #5 0x000000353d2077f1 in start_thread () from /lib64/libpthread.so.0 #6 0x000000353cee570d in clone () from /lib64/libc.so.6 (gdb) thread 2 [Switching to thread 2 (Thread 0x7fb9c39fd700 (LWP 11046))]#0 0x000000353cee5d03 in epoll_wait () from /lib64/libc.so.6 (gdb) where #0 0x000000353cee5d03 in epoll_wait () from /lib64/libc.so.6 #1 0x00007fb9c65cfa3e in iv_epoll_poll (numfds=1, active=0x7fb9c39fa9a0, msec=10000) at iv_method_epoll.c:73 #2 0x00007fb9c65cf1bb in iv_main () at iv_main.c:265 #3 0x00007fb9c65d3c36 in iv_work_thread (_thr=0x14fc8e0) at iv_work.c:196 #4 0x00007fb9c65d42a8 in iv_thread_handler (_thr=0x14fc9b0) at iv_thread.c:100 #5 0x000000353d2077f1 in start_thread () from /lib64/libpthread.so.0 #6 0x000000353cee570d in clone () from /lib64/libc.so.6 (gdb) thread 3 [Switching to thread 3 (Thread 0x7fb9c2ffc700 (LWP 11048))]#0 0x000000353cee5d03 in epoll_wait () from /lib64/libc.so.6 (gdb) where #0 0x000000353cee5d03 in epoll_wait () from /lib64/libc.so.6 #1 0x00007fb9c65cfa3e in iv_epoll_poll (numfds=1, active=0x7fb9c2ff99a0, msec=10000) at iv_method_epoll.c:73 #2 0x00007fb9c65cf1bb in iv_main () at iv_main.c:265 #3 0x00007fb9c65d3c36 in iv_work_thread (_thr=0x15635c0) at iv_work.c:196 #4 0x00007fb9c65d42a8 in iv_thread_handler (_thr=0x14fc380) at iv_thread.c:100 #5 0x000000353d2077f1 in start_thread () from /lib64/libpthread.so.0 #6 0x000000353cee570d in clone () from /lib64/libc.so.6 (gdb) thread 4 [Switching to thread 4 (Thread 0x7fb9c25fb700 (LWP 11049))]#0 0x000000353cee5d03 in epoll_wait () from /lib64/libc.so.6 (gdb) where #0 0x000000353cee5d03 in epoll_wait () from /lib64/libc.so.6 #1 0x00007fb9c65cfa3e in iv_epoll_poll (numfds=1, active=0x7fb9c25f89a0, msec=10000) at iv_method_epoll.c:73 #2 0x00007fb9c65cf1bb in iv_main () at iv_main.c:265 #3 0x00007fb9c65d3c36 in iv_work_thread (_thr=0x1566d20) at iv_work.c:196 #4 0x00007fb9c65d42a8 in iv_thread_handler (_thr=0x1566a70) at iv_thread.c:100 #5 0x000000353d2077f1 in start_thread () from /lib64/libpthread.so.0 #6 0x000000353cee570d in clone () from /lib64/libc.so.6 (gdb) thread 5 [Switching to thread 5 (Thread 0x7fb9c654ab00 (LWP 11040))]#0 0x000000353cedd967 in writev () from /lib64/libc.so.6 (gdb) where #0 0x000000353cedd967 in writev () from /lib64/libc.so.6 #1 0x00007fb9c65820f8 in log_proto_file_writer_flush (s=0x171b5a0) at logproto.c:270 #2 0x00007fb9c658c403 in log_proto_flush (s=0x171b5a0) at logproto.h:86 #3 0x00007fb9c658ec3e in log_writer_flush (self=0x171adb0, flush_mode=LW_FLUSH_QUEUE) at logwriter.c:1032 #4 0x00007fb9c658f006 in log_writer_deinit (s=0x171adb0) at logwriter.c:1106 #5 0x00007fb9c63399d6 in log_pipe_deinit (s=0x171adb0) at ../../lib/logpipe.h:254 #6 0x00007fb9c633b3cd in affile_dw_deinit (s=0x171ac20) at affile.c:627 #7 0x00007fb9c63399d6 in log_pipe_deinit (s=0x171ac20) at ../../lib/logpipe.h:254 #8 0x00007fb9c633c211 in affile_dd_deinit_writer (key=0x171ad60, value=0x171ac20, user_data=0x0) at affile.c:974 #9 0x000000353e22a7a3 in g_hash_table_foreach () from /lib64/libglib-2.0.so.0 #10 0x00007fb9c633c349 in affile_dd_deinit (s=0x1539990) at affile.c:996 #11 0x00007fb9c6575d86 in log_pipe_deinit (s=0x1539990) at logpipe.h:254 #12 0x00007fb9c65761b4 in log_dest_group_deinit (s=0x1539ef0) at dgroup.c:76 #13 0x00007fb9c656f54c in log_pipe_deinit (s=0x1539ef0) at logpipe.h:254 #14 0x00007fb9c657078c in log_center_deinit (self=0x14f35c0) at center.c:576 #15 0x00007fb9c6571296 in cfg_deinit (cfg=0x14f1ca0) at cfg.c:261 #16 0x00007fb9c6590cac in main_loop_reload_config_apply () at mainloop.c:494 #17 0x00007fb9c6590aab in main_loop_io_worker_job_complete (self=0x156d160) at mainloop.c:417 #18 0x00007fb9c65d3ccc in iv_work_event (_pool=0x14f1bf0) at iv_work.c:221 #19 0x00007fb9c65d2862 in iv_event_run_pending_events (_dummy=0x0) at iv_event.c:67 #20 0x00007fb9c65d2cb5 in iv_event_raw_got_event (_this=0x7fb9c654aa18) at iv_event_raw.c:82 #21 0x00007fb9c65cefec in iv_run_active_list (active=0x7fff33ed17b0) at iv_main.c:219 #22 0x00007fb9c65cf1cc in iv_main () at iv_main.c:269 #23 0x00007fb9c65913e9 in main_loop_run () at mainloop.c:731 #24 0x00000000004016d0 in main () -- Configure bugmail: https://bugzilla.balabit.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching all bug changes.

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[Bug 144] New: incremental statistics and on reload and stop
by bugzilla＠bugzilla.balabit.com 07 Sep '12

07 Sep '12

https://bugzilla.balabit.com/show_bug.cgi?id=144 Summary: incremental statistics and on reload and stop Product: syslog-ng Version: unspecified Platform: All OS/Version: All Status: NEW Severity: minor Priority: unspecified Component: syslog-ng AssignedTo: bazsi(a)balabit.hu ReportedBy: mdione.ext(a)orange.com Type of the Report: --- Estimated Hours: 0.0 syslog-ng log statistics in /var/log/messages (or some other defined destination), but it does it accumulatively. this makes it harder to make graphs, because the data collector must detect reloads and stop/starts. this most probably should not be done if the statistics are asked via syslog-ng-ctl. also, it does not print statistics on reload or stop, so the last values before the reload or stop are lost. -- Configure bugmail: https://bugzilla.balabit.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching all bug changes.

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[Bug 168] New: Solaris 10 make failure after successful configure
by bugzilla＠bugzilla.balabit.com 02 Jul '12

02 Jul '12

https://bugzilla.balabit.com/show_bug.cgi?id=168 Summary: Solaris 10 make failure after successful configure Product: syslog-ng Version: 3.3.x Platform: Other OS/Version: Solaris Status: NEW Severity: blocker Priority: unspecified Component: syslog-ng AssignedTo: bazsi(a)balabit.hu ReportedBy: david.j.fenske(a)usps.gov Type of the Report: bug Estimated Hours: 0.0 1. Download, gunzip, and de-tar syslog-ng-3.3.4 2. PKG_CONFIG_PATH=/usr/local/lib/pkgconfig 3. LD_LIBRARY_PATH=/usr/local/lib 4. ./configure 5. make make all-recursive Making all in lib make: Fatal error in reader: Makefile, line 993: Unexpected end of line seen Current working directory /djftools/syslog/source/syslog-ng-3.3.4/lib *** Error code 1 The following command caused the error: fail= failcom='exit 1'; \ for f in x $MAKEFLAGS; do \ case $f in \ *=* | --[!k]*);; \ *k*) failcom='fail=yes';; \ esac; \ done; \ dot_seen=no; \ target=`echo all-recursive | sed s/-recursive//`; \ list='lib modules syslog-ng scripts tests doc contrib scl debian tgz2build build'; for subdir in $list; do \ echo "Making $target in $subdir"; \ if test "$subdir" = "."; then \ dot_seen=yes; \ local_target="$target-am"; \ else \ local_target="$target"; \ fi; \ (CDPATH="${ZSH_VERSION+.}:" && cd $subdir && make $local_target) \ || eval $failcom; \ done; \ if test "$dot_seen" = "no"; then \ make "$target-am" || exit 1; \ fi; test -z "$fail" make: Fatal error: Command failed for target `all-recursive' Current working directory /djftools/syslog/source/syslog-ng-3.3.4 *** Error code 1 make: Fatal error: Command failed for target `all' -- Configure bugmail: https://bugzilla.balabit.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching all bug changes.

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[Bug 159] New: on signal HUP program destinations are not closed
by bugzilla＠bugzilla.balabit.com 26 Jun '12

26 Jun '12

https://bugzilla.balabit.com/show_bug.cgi?id=159 Summary: on signal HUP program destinations are not closed Product: syslog-ng Version: 3.3.x Platform: PC OS/Version: Linux Status: NEW Severity: normal Priority: unspecified Component: syslog-ng AssignedTo: bazsi(a)balabit.hu ReportedBy: erempel(a)uvic.ca Type of the Report: --- Estimated Hours: 0.0 In previous versions of syslog-ng, when a HUP signal was sent to syslog-ng it would close all of its destinations and reopen them. In version 3.3.4 (perhaps earlier ones) the destination to programs is not closed, but a new one is opened. -- Configure bugmail: https://bugzilla.balabit.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching all bug changes.

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