Multi-thread cyrus delayed forking of imapd processes after connecting to master listener
Michael Hieb
michael.hieb at celoso.net
Wed May 24 22:39:25 EDT 2017
I set the cyrus.service script to print our ulimit -a. This is what it
shows. Is there anything here that should limit cyrus?
May 25 02:36:51 MAILSERVER systemd[1]: Starting LSB: The cyrus-imapd
mail system...
May 25 02:36:51 MAILSERVER cyrus[6762]: Starting IMAP/POP3 service
(cyrus-imapd)core file size (blocks, -c) 102400
May 25 02:36:51 MAILSERVER cyrus[6762]: data seg size (kbytes, -d) unlimited
May 25 02:36:51 MAILSERVER cyrus[6762]: scheduling priority
(-e) 0
May 25 02:36:51 MAILSERVER cyrus[6762]: file size (blocks, -f) unlimited
May 25 02:36:51 MAILSERVER cyrus[6762]: pending signals
(-i) 63615
May 25 02:36:51 MAILSERVER cyrus[6762]: max locked memory (kbytes, -l) 64
May 25 02:36:51 MAILSERVER cyrus[6762]: max memory size (kbytes, -m)
unlimited
May 25 02:36:51 MAILSERVER cyrus[6762]: open files
(-n) 209702
May 25 02:36:51 MAILSERVER cyrus[6762]: pipe size (512 bytes,
-p) 8
May 25 02:36:51 MAILSERVER cyrus[6762]: POSIX message queues (bytes, -q)
819200
May 25 02:36:51 MAILSERVER cyrus[6762]: real-time priority
(-r) 50000
May 25 02:36:51 MAILSERVER cyrus[6762]: stack size (kbytes, -s) 8192
May 25 02:36:51 MAILSERVER cyrus[6762]: cpu time (seconds, -t) unlimited
May 25 02:36:51 MAILSERVER cyrus[6762]: max user processes
(-u) 4096
May 25 02:36:51 MAILSERVER cyrus[6762]: virtual memory (kbytes, -v)
unlimited
May 25 02:36:51 MAILSERVER cyrus[6762]: file locks
(-x) unlimited
May 25 02:36:52 MAILSERVER master[6773]: setrlimit: Unable to set file
descriptors limit to -1: Operation not permitted
May 25 02:36:52 MAILSERVER master[6773]: retrying with 209702 (current max)
May 25 02:36:52 MAILSERVER master[6773]: process started
May 25 02:36:52 MAILSERVER cyrus[6762]: ..done
May 25 02:36:52 MAILSERVER systemd[1]: Started LSB: The cyrus-imapd mail
system.
May 25 02:36:52 MAILSERVER master[6776]: about to exec
/usr/lib/cyrus/bin/ctl_cyrusdb
May 25 02:36:52 MAILSERVER ctl_cyrusdb[6776]: recovering cyrus databases
May 25 02:36:52 MAILSERVER ctl_cyrusdb[6776]: skiplist: checkpointed
/var/lib/imap/mailboxes.db (1446 records, 186620 bytes) in 0 seconds
May 25 02:36:52 MAILSERVER ctl_cyrusdb[6776]: skiplist: checkpointed
/var/lib/imap/annotations.db (0 records, 144 bytes) in 0 seconds
May 25 02:36:52 MAILSERVER ctl_cyrusdb[6776]: done recovering cyrus
databases
May 25 02:36:52 MAILSERVER master[6778]: about to exec
/usr/lib/cyrus/bin/idled
May 25 02:36:52 MAILSERVER master[6773]: ready for work
On 05/24/2017 10:59 PM, Michael Hieb wrote:
> I did try to change the service names. I posted that result to the
> group. It did not make a difference.
>
> I am not a low-level programmer so maybe have the wrong idea here, but
> it seems locked on reading the imapd executable. Doesn't that suggest
> a system limit of either open files or open processes? I have tried to
> open up those limits as it was my first angle of investigation. What
> confuses me is that the problem goes away when I switch to a
> single-threaded Cyrus service listening on all ports simultaneously.
>
> Any thoughts, suggestions welcome.
>
> Michael
>
> On May 24, 2017 10:42:30 PM GMT+08:00, Michael Ulitskiy
> <mulitskiy at acedsl.com> wrote:
>
> well, it tells us that it has to do with locking during connection accept.
> have you tried to use different service name per server as was suggested by
> others?
>
> Michael
>
> On Wednesday, May 24, 2017 12:00:58 PM Michael Hieb wrote:
>
> I have had good success connecting to the right process and
> can replicate the result. Here is what I found; MAILSERVER:~ #
> ps auwwx|grep imapd cyrus 1738 0.0 0.0 119572 10140 ? S 03:32
> 0:00 imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf -s cyrus 1745 0.0 0.0 119580
> 9812 ? S 03:32 0:00 imapd -C /etc/imapd.domain2.com
> <http://imapd.domain2.com>.conf -s cyrus 1749 0.0 0.0 119596
> 9856 ? S 03:32 0:00 imapd -C /etc/imapd.domain3.com
> <http://imapd.domain3.com>.conf cyrus 1750 0.0 0.0 129424
> 11500 ? S 03:32 0:00 imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf cyrus 1751 0.0 0.0 119696 9988
> ? S 03:32 0:00 imapd -C /etc/imapd.domain5.com
> <http://imapd.domain5.com>.conf cyrus 1752 0.0 0.0 119596 9816
> ? S 03:32 0:00 imapd -C /etc/imapd.domain4.com
> <http://imapd.domain4.com>.conf cyrus 1753 0.0 0.0 119604 9964
> ? S 03:32 0:00 imapd -C /etc/imapd.domain3.com
> <http://imapd.domain3.com>.conf cyrus 1754 0.0 0.0 119596 9652
> ? S 03:32 0:00 imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf cyrus 1755 0.0 0.0 119596 9800
> ? S 03:32 0:00 imapd -C /etc/imapd.domain5.com
> <http://imapd.domain5.com>.conf cyrus 1756 0.0 0.0 119604
> 10056 ? S 03:32 0:00 imapd -C /etc/imapd.domain4.com
> <http://imapd.domain4.com>.conf cyrus 1757 0.0 0.0 129564
> 11724 ? S 03:32 0:00 imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf cyrus 1758 0.0 0.0 119512 9896
> ? S 03:33 0:00 imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf -s cyrus 1766 0.0 0.0 119588
> 9904 ? S 03:33 0:00 imapd -C /etc/imapd.domain3.com
> <http://imapd.domain3.com>.conf -s cyrus 1767 0.0 0.0 119576
> 9804 ? S 03:33 0:00 imapd -C /etc/imapd.domain3.com
> <http://imapd.domain3.com>.conf -s cyrus 1778 0.0 0.0 119480
> 9936 ? S 03:33 0:00 imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf -s cyrus 1786 0.0 0.0 119768
> 10144 ? S 03:33 0:00 imapd -C /etc/imapd.domain5.com
> <http://imapd.domain5.com>.conf cyrus 1881 0.0 0.0 119808
> 10080 ? S 03:34 0:00 imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf cyrus 1912 0.0 0.0 119688 9868
> ? S 03:36 0:00 imapd -C /etc/imapd.domain2.com
> <http://imapd.domain2.com>.conf cyrus 1937 0.0 0.0 119784
> 10216 ? S 03:38 0:00 imapd -C /etc/imapd.domain3.com
> <http://imapd.domain3.com>.conf cyrus 1947 0.0 0.0 125872
> 10660 ? S 03:39 0:00 imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf cyrus 1993 0.0 0.0 119604 9808
> ? S 03:42 0:00 imapd -C /etc/imapd.domain4.com
> <http://imapd.domain4.com>.conf cyrus 2078 0.0 0.0 117044 7628
> ? S 03:48 0:00 imapd -C /etc/imapd.domain4.com
> <http://imapd.domain4.com>.conf root 2080 0.0 0.0 10548 1656
> pts/2 S+ 03:48 0:00 grep --color=auto imapd Then try to
> connect: user at somesystem:~> telnet imap.domain2.com
> <http://imap.domain2.com> 143 Trying 192.168.110.175
> <http://192.168.110.175>... Connected to imap.domain2.com
> <http://imap.domain2.com>. Escape character is '^]'. Then
> mailserver is the same except one new process at the end:
> MAILSERVER:~ # ps auwwx|grep imapd cyrus 1738 0.0 0.0 119572
> 10140 ? S 03:32 0:00 imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf -s cyrus 1745 0.0 0.0 119580
> 9812 ? S 03:32 0:00 imapd -C /etc/imapd.domain2.com
> <http://imapd.domain2.com>.conf -s cyrus 1749 0.0 0.0 119596
> 9856 ? S 03:32 0:00 imapd -C /etc/imapd.domain3.com
> <http://imapd.domain3.com>.conf cyrus 1750 0.0 0.0 129424
> 11500 ? S 03:32 0:00 imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf cyrus 1751 0.0 0.0 119696 9988
> ? S 03:32 0:00 imapd -C /etc/imapd.domain5.com
> <http://imapd.domain5.com>.conf cyrus 1752 0.0 0.0 119596 9816
> ? S 03:32 0:00 imapd -C /etc/imapd.domain4.com
> <http://imapd.domain4.com>.conf cyrus 1753 0.0 0.0 119604 9964
> ? S 03:32 0:00 imapd -C /etc/imapd.domain3.com
> <http://imapd.domain3.com>.conf cyrus 1754 0.0 0.0 119596 9652
> ? S 03:32 0:00 imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf cyrus 1755 0.0 0.0 119596 9800
> ? S 03:32 0:00 imapd -C /etc/imapd.domain5.com
> <http://imapd.domain5.com>.conf cyrus 1756 0.0 0.0 119604
> 10056 ? S 03:32 0:00 imapd -C /etc/imapd.domain4.com
> <http://imapd.domain4.com>.conf cyrus 1757 0.0 0.0 129564
> 11724 ? S 03:32 0:00 imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf cyrus 1758 0.0 0.0 119512 9896
> ? S 03:33 0:00 imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf -s cyrus 1766 0.0 0.0 119588
> 9904 ? S 03:33 0:00 imapd -C /etc/imapd.domain3.com
> <http://imapd.domain3.com>.conf -s cyrus 1767 0.0 0.0 119576
> 9804 ? S 03:33 0:00 imapd -C /etc/imapd.domain3.com
> <http://imapd.domain3.com>.conf -s cyrus 1778 0.0 0.0 119480
> 9936 ? S 03:33 0:00 imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf -s cyrus 1786 0.0 0.0 119768
> 10144 ? S 03:33 0:00 imapd -C /etc/imapd.domain5.com
> <http://imapd.domain5.com>.conf cyrus 1881 0.0 0.0 119808
> 10080 ? S 03:34 0:00 imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf cyrus 1912 0.0 0.0 119688 9868
> ? S 03:36 0:00 imapd -C /etc/imapd.domain2.com
> <http://imapd.domain2.com>.conf cyrus 1937 0.0 0.0 119784
> 10216 ? S 03:38 0:00 imapd -C /etc/imapd.domain3.com
> <http://imapd.domain3.com>.conf cyrus 1947 0.0 0.0 125872
> 10660 ? S 03:39 0:00 imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf cyrus 1993 0.0 0.0 119604 9808
> ? S 03:42 0:00 imapd -C /etc/imapd.domain4.com
> <http://imapd.domain4.com>.conf cyrus 2078 0.0 0.0 117044 7628
> ? S 03:48 0:00 imapd -C /etc/imapd.domain4.com
> <http://imapd.domain4.com>.conf cyrus 2120 0.0 0.0 117044 7628
> ? S 03:48 0:00 imapd -C /etc/imapd.domain2.com
> <http://imapd.domain2.com>.conf root 2122 0.0 0.0 10548 1656
> pts/2 S+ 03:48 0:00 grep --color=auto imapd MAILSERVER:~ #
> strace -p 2120 Process 2120 attached fcntl(13, F_SETLKW,
> {type=F_WRLCK, whence=SEEK_SET, start=0, len=0} Process hangs,
> nothing happening... then about 45 seconds later (in this case
> - time to wait varies each time I try this) it frees itself
> and strace shows this: MAILSERVER:~ # strace -p 2120 Process
> 2120 attached fcntl(13, F_SETLKW, {type=F_WRLCK,
> whence=SEEK_SET, start=0, len=0}) = 0
> stat("/usr/lib/cyrus/bin/imapd", {st_mode=S_IFREG|0755,
> st_size=1758976, ...}) = 0 accept(4, 0, NULL) = 14 fcntl(13,
> F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
> alarm(0) = 0 getpeername(14, {sa_family=AF_INET,
> sin_port=htons(43778), sin_addr=inet_addr("192.168.110.27
> <http://192.168.110.27>")}, [16]) = 0 getpeername(14,
> {sa_family=AF_INET, sin_port=htons(43778),
> sin_addr=inet_addr("192.168.110.27 <http://192.168.110.27>")},
> [16]) = 0 getsockname(14, {sa_family=AF_INET,
> sin_port=htons(143), sin_addr=inet_addr("192.168.110.174
> <http://192.168.110.174>")}, [16]) = 0
> open("/etc/hosts.allow", O_RDONLY|O_CLOEXEC) = 15 fstat(15,
> {st_mode=S_IFREG|0644, st_size=2639, ...}) = 0 mmap(NULL,
> 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
> = 0x7ff634095000 read(15, "# /etc/hosts.allow\n# See 'man
> tc"..., 4096) = 2639 read(15, "", 4096) = 0 close(15) = 0
> munmap(0x7ff634095000, 4096) = 0 open("/etc/hosts.deny",
> O_RDONLY|O_CLOEXEC) = 15 fstat(15, {st_mode=S_IFREG|0644,
> st_size=149, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff634095000 read(15, "#
> /etc/hosts.deny\n# See 'man tcp"..., 4096) = 149 read(15, "",
> 4096) = 0 close(15) = 0 munmap(0x7ff634095000, 4096) = 0
> write(3, "\2\0\0\0H\10\0\0", 8) = 8 sendto(6, "<31>May 24
> 03:56:21 imap[2120]: "..., 51, MSG_NOSIGNAL, NULL, 0) = 51
> dup2(14, 0) = 0 dup2(14, 1) = 1 dup2(14, 2) = 2 close(14) = 0
> write(3, "\3\0\0\0H\10\0\0", 8) = 8 getpeername(0,
> {sa_family=AF_INET, sin_port=htons(43778),
> sin_addr=inet_addr("192.168.110.27 <http://192.168.110.27>")},
> [16]) = 0 socket(PF_LOCAL,
> SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 14 connect(14,
> {sa_family=AF_LOCAL, sun_path="/var/run/nscd/socket"}, 110) =
> 0 sendto(14, "\2\0\0\0\r\0\0\0\6\0\0\0hosts\0", 18,
> MSG_NOSIGNAL, NULL, 0) = 18 poll([{fd=14,
> events=POLLIN|POLLERR|POLLHUP}], 1, 5000) = 1 ([{fd=14,
> revents=POLLIN|POLLHUP}]) recvmsg(14, {msg_name(0)=NULL,
> msg_iov(2)=[{"hosts\0", 6}, {"\310O\3\0\0\0\0\0", 8}],
> msg_controllen=20, [{cmsg_len=20, cmsg_level=SOL_SOCKET,
> cmsg_type=SCM_RIGHTS, [15]}], msg_flags=MSG_CMSG_CLOEXEC},
> MSG_CMSG_CLOEXEC) = 14 mmap(NULL, 217032, PROT_READ,
> MAP_SHARED, 15, 0) = 0x7ff634021000 close(15) = 0 close(14) =
> 0 getsockname(0, {sa_family=AF_INET, sin_port=htons(143),
> sin_addr=inet_addr("192.168.110.174
> <http://192.168.110.174>")}, [16]) = 0
> open("/var/lib/imap/proc/2120", O_RDWR|O_CREAT|O_TRUNC, 0666)
> = 14 fstat(14, {st_mode=S_IFREG|0600, st_size=0, ...}) = 0
> mmap(NULL, 4096, PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff634095000 lseek(14,
> 0, SEEK_SET) = 0 write(14, "somehost.domain1.com
> <http://somehost.domain1.com> [192.168.110.2
> <http://192.168.110.2>"..., 35) = 35 lseek(14, 0, SEEK_CUR) =
> 35 ftruncate(14, 35) = 0 open("/var/lib/imap/msg/motd",
> O_RDONLY) = -1 ENOENT (No such file or directory) write(1, "*
> OK [CAPABILITY IMAP4rev1 LITER"..., 199) = 199 select(1, [0],
> NULL, NULL, {1800, 0} and telnet session shows this:
> user at somesystem:~> telnet imap.domain2.com
> <http://imap.domain2.com> 143 Trying 192.168.110.175
> <http://192.168.110.175>... Connected to imap.domain2.com
> <http://imap.domain2.com>. Escape character is '^]'. * OK
> [CAPABILITY IMAP4rev1 LITERAL+ ID ENABLE STARTTLS
> AUTH=GSS-SPNEGO AUTH=GSSAPI AUTH=DIGEST-MD5 AUTH=CRAM-MD5
> AUTH=LOGIN AUTH=PLAIN SASL-IR] imap.domain2.com
> <http://imap.domain2.com> Cyrus IMAP v2.4.18 server ready
> Thereafter telnet to imap.domain2.com
> <http://imap.domain2.com> has immediate response and other
> domains hang.. I can replicate this at will. What does it
> mean? Michael On 05/23/2017 10:38 PM, Michael Ulitskiy wrote:
>
> you can use 'strace -p <pid>', specifying the pid of
> process you want to trace. you will have to "catch" the
> process that blocks. it may not be easy, but I have no
> other suggestions. On Tuesday, May 23, 2017 06:19:17 PM
> Michael Hieb wrote:
>
> The SASL is cyrus-sasl 2.1.26-9.5. I believe it does
> use /dev/urandom. I am not sure how to run strace on
> the process that the Master listener forks. Here is
> the strace run on the imapd process at a command
> prompt (which is not quite the same as the master
> listener forking it to a port where another process is
> waiting to connect to it). MAILSERVER:~ # strace
> /usr/lib/cyrus/bin/imapd -C /etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf
> execve("/usr/lib/cyrus/bin/imapd",
> ["/usr/lib/cyrus/bin/imapd", "-C",
> "/etc/imapd.domain1.com
> <http://imapd.domain1.com>.conf"], [/* 56 vars */]) =
> 0 brk(0) = 0x5573deaf5000 mmap(NULL, 4096,
> PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = 0x7fdeb770c000 access("/etc/ld.so
> <http://ld.so>.preload", R_OK) = -1 ENOENT (No such
> file or directory) open("/etc/ld.so
> <http://ld.so>.cache", O_RDONLY|O_CLOEXEC) = 3
> fstat(3, {st_mode=S_IFREG|0644, st_size=80522, ...}) =
> 0 mmap(NULL, 80522, PROT_READ, MAP_PRIVATE, 3, 0) =
> 0x7fdeb76f8000 close(3) = 0
> open("/usr/lib64/libsasl2.so <http://libsasl2.so>.3",
> O_RDONLY|O_CLOEXEC) = 3 read(3,
> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300N\0\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0755,
> st_size=118552, ...}) = 0 mmap(NULL, 2213800,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb72d0000 mprotect(0x7fdeb72ec000, 2093056,
> PROT_NONE) = 0 mmap(0x7fdeb74eb000, 8192,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1b000) =
> 0x7fdeb74eb000 close(3) = 0
> open("/usr/lib64/libkrb5.so <http://libkrb5.so>.3",
> O_RDONLY|O_CLOEXEC) = 3 read(3,
> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200Y\2\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0755,
> st_size=855280, ...}) = 0 mmap(NULL, 2951008,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb6fff000 mprotect(0x7fdeb70c1000, 2093056,
> PROT_NONE) = 0 mmap(0x7fdeb72c0000, 65536,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xc1000) =
> 0x7fdeb72c0000 close(3) = 0 mmap(NULL, 4096,
> PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = 0x7fdeb76f7000 open("/lib64/libcom_err.so
> <http://err.so>.2", O_RDONLY|O_CLOEXEC) = 3 read(3,
> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340\26\0\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0755,
> st_size=14760, ...}) = 0 mmap(NULL, 2109928,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb6dfb000 mprotect(0x7fdeb6dfe000, 2093056,
> PROT_NONE) = 0 mmap(0x7fdeb6ffd000, 8192,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) =
> 0x7fdeb6ffd000 close(3) = 0 open("/lib64/libssl.so
> <http://libssl.so>.1.0.0", O_RDONLY|O_CLOEXEC) = 3
> read(3,
> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0pr\1\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0555,
> st_size=440632, ...}) = 0 mmap(NULL, 2535888,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb6b8f000 mprotect(0x7fdeb6bf0000, 2097152,
> PROT_NONE) = 0 mmap(0x7fdeb6df0000, 45056,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x61000) =
> 0x7fdeb6df0000 close(3) = 0 open("/lib64/libcrypto.so
> <http://libcrypto.so>.1.0.0", O_RDONLY|O_CLOEXEC) = 3
> read(3,
> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0\313\6\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0555,
> st_size=2447744, ...}) = 0 mmap(NULL, 4559184,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb6735000 mprotect(0x7fdeb6962000, 2097152,
> PROT_NONE) = 0 mmap(0x7fdeb6b62000, 167936,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x22d000) =
> 0x7fdeb6b62000 mmap(0x7fdeb6b8b000, 12624,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) =
> 0x7fdeb6b8b000 close(3) = 0
> open("/usr/lib64/libdb-4.8.so <http://libdb-4.8.so>",
> O_RDONLY|O_CLOEXEC) = 3 read(3,
> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0 at X\2\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0755,
> st_size=1560248, ...}) = 0 mmap(NULL, 4096,
> PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = 0x7fdeb76f6000 mmap(NULL, 3655304,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb63b8000 mprotect(0x7fdeb6530000, 2097152,
> PROT_NONE) = 0 mmap(0x7fdeb6730000, 20480,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x178000) =
> 0x7fdeb6730000 close(3) = 0 open("/lib64/libz.so
> <http://libz.so>.1", O_RDONLY|O_CLOEXEC) = 3 read(3,
> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P#\0\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0755,
> st_size=88216, ...}) = 0 mmap(NULL, 2183304,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb61a2000 mprotect(0x7fdeb61b7000, 2093056,
> PROT_NONE) = 0 mmap(0x7fdeb63b6000, 8192,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x14000) =
> 0x7fdeb63b6000 close(3) = 0 open("/lib64/libwrap.so
> <http://libwrap.so>.0", O_RDONLY|O_CLOEXEC) = 3
> read(3,
> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0p8\0\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0755,
> st_size=40952, ...}) = 0 mmap(NULL, 2139520,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb5f97000 mprotect(0x7fdeb5fa0000, 2093056,
> PROT_NONE) = 0 mmap(0x7fdeb619f000, 8192,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8000) =
> 0x7fdeb619f000 mmap(0x7fdeb61a1000, 1408,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) =
> 0x7fdeb61a1000 close(3) = 0 open("/lib64/libc.so
> <http://libc.so>.6", O_RDONLY|O_CLOEXEC) = 3 read(3,
> "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0\10\2\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0755,
> st_size=1925280, ...}) = 0 mmap(NULL, 4096,
> PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = 0x7fdeb76f5000 mmap(NULL, 3811872,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb5bf4000 mprotect(0x7fdeb5d8e000, 2093056,
> PROT_NONE) = 0 mmap(0x7fdeb5f8d000, 24576,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x199000) =
> 0x7fdeb5f8d000 mmap(0x7fdeb5f93000, 14880,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) =
> 0x7fdeb5f93000 close(3) = 0 open("/lib64/libdl.so
> <http://libdl.so>.2", O_RDONLY|O_CLOEXEC) = 3 read(3,
> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\240\r\0\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0755,
> st_size=18712, ...}) = 0 mmap(NULL, 2109680,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb59f0000 mprotect(0x7fdeb59f2000, 2097152,
> PROT_NONE) = 0 mmap(0x7fdeb5bf2000, 8192,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) =
> 0x7fdeb5bf2000 close(3) = 0
> open("/usr/lib64/libk5crypto.so
> <http://libk5crypto.so>.3", O_RDONLY|O_CLOEXEC) = 3
> read(3,
> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340K\0\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0755,
> st_size=191424, ...}) = 0 mmap(NULL, 2290168,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb57c0000 mprotect(0x7fdeb57ed000, 2093056,
> PROT_NONE) = 0 mmap(0x7fdeb59ec000, 12288,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2c000) =
> 0x7fdeb59ec000 mmap(0x7fdeb59ef000, 504,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) =
> 0x7fdeb59ef000 close(3) = 0
> open("/usr/lib64/libkrb5support.so
> <http://libkrb5support.so>.0", O_RDONLY|O_CLOEXEC) = 3
> read(3,
> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\20:\0\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0755,
> st_size=52416, ...}) = 0 mmap(NULL, 4096,
> PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = 0x7fdeb76f4000 mmap(NULL, 2147816,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb55b3000 mprotect(0x7fdeb55bf000, 2093056,
> PROT_NONE) = 0 mmap(0x7fdeb57be000, 8192,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xb000) =
> 0x7fdeb57be000 close(3) = 0
> open("/lib64/libkeyutils.so
> <http://libkeyutils.so>.1", O_RDONLY|O_CLOEXEC) = 3
> read(3,
> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320\26\0\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0755,
> st_size=14688, ...}) = 0 mmap(NULL, 2109704,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb53af000 mprotect(0x7fdeb53b2000, 2093056,
> PROT_NONE) = 0 mmap(0x7fdeb55b1000, 8192,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) =
> 0x7fdeb55b1000 close(3) = 0 open("/lib64/libresolv.so
> <http://libresolv.so>.2", O_RDONLY|O_CLOEXEC) = 3
> read(3,
> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\2209\0\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0755,
> st_size=97152, ...}) = 0 mmap(NULL, 2189896,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb5198000 mprotect(0x7fdeb51ac000, 2093056,
> PROT_NONE) = 0 mmap(0x7fdeb53ab000, 8192,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13000) =
> 0x7fdeb53ab000 mmap(0x7fdeb53ad000, 6728,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) =
> 0x7fdeb53ad000 close(3) = 0 open("/lib64/libpthread.so
> <http://libpthread.so>.0", O_RDONLY|O_CLOEXEC) = 3
> read(3,
> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360r\0\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0755,
> st_size=135952, ...}) = 0 mmap(NULL, 4096,
> PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = 0x7fdeb76f3000 mmap(NULL, 2213008,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb4f7b000 mprotect(0x7fdeb4f93000, 2093056,
> PROT_NONE) = 0 mmap(0x7fdeb5192000, 8192,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x17000) =
> 0x7fdeb5192000 mmap(0x7fdeb5194000, 13456,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) =
> 0x7fdeb5194000 close(3) = 0 open("/lib64/libselinux.so
> <http://libselinux.so>.1", O_RDONLY|O_CLOEXEC) = 3
> read(3,
> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0ps\0\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0755,
> st_size=147208, ...}) = 0 mmap(NULL, 2251056,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb4d55000 mprotect(0x7fdeb4d78000, 2093056,
> PROT_NONE) = 0 mmap(0x7fdeb4f77000, 8192,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x22000) =
> 0x7fdeb4f77000 mmap(0x7fdeb4f79000, 6448,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) =
> 0x7fdeb4f79000 close(3) = 0
> open("/usr/lib64/libpcre.so <http://libpcre.so>.1",
> O_RDONLY|O_CLOEXEC) = 3 read(3,
> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0000\30\0\0\0\0\0\0"...,
> 832) = 832 fstat(3, {st_mode=S_IFREG|0755,
> st_size=452976, ...}) = 0 mmap(NULL, 4096,
> PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = 0x7fdeb76f2000 mmap(NULL, 2548232,
> PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0x7fdeb4ae6000 mprotect(0x7fdeb4b54000, 2093056,
> PROT_NONE) = 0 mmap(0x7fdeb4d53000, 8192,
> PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6d000) =
> 0x7fdeb4d53000 close(3) = 0 mmap(NULL, 4096,
> PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = 0x7fdeb76f1000 mmap(NULL, 4096,
> PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = 0x7fdeb76f0000 mmap(NULL, 8192,
> PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = 0x7fdeb76ee000 arch_prctl(ARCH_SET_FS,
> 0x7fdeb76ee840) = 0 mprotect(0x7fdeb5f8d000, 16384,
> PROT_READ) = 0 mprotect(0x7fdeb5192000, 4096,
> PROT_READ) = 0 mprotect(0x7fdeb4d53000, 4096,
> PROT_READ) = 0 mprotect(0x7fdeb5bf2000, 4096,
> PROT_READ) = 0 mprotect(0x7fdeb4f77000, 4096,
> PROT_READ) = 0 mprotect(0x7fdeb53ab000, 4096,
> PROT_READ) = 0 mprotect(0x7fdeb55b1000, 4096,
> PROT_READ) = 0 mprotect(0x7fdeb57be000, 4096,
> PROT_READ) = 0 mprotect(0x7fdeb59ec000, 8192,
> PROT_READ) = 0 mprotect(0x7fdeb619f000, 4096,
> PROT_READ) = 0 mprotect(0x7fdeb63b6000, 4096,
> PROT_READ) = 0 mprotect(0x7fdeb6730000, 8192,
> PROT_READ) = 0 mprotect(0x7fdeb6b62000, 110592,
> PROT_READ) = 0 mprotect(0x7fdeb6df0000, 16384,
> PROT_READ) = 0 mprotect(0x7fdeb6ffd000, 4096,
> PROT_READ) = 0 mprotect(0x7fdeb72c0000, 53248,
> PROT_READ) = 0 mprotect(0x7fdeb74eb000, 4096,
> PROT_READ) = 0 mprotect(0x5573dd954000, 8192,
> PROT_READ) = 0 mprotect(0x7fdeb770d000, 4096,
> PROT_READ) = 0 munmap(0x7fdeb76f8000, 80522) = 0
> set_tid_address(0x7fdeb76eeb10) = 18042
> set_robust_list(0x7fdeb76eeb20, 24) = 0
> rt_sigaction(SIGRTMIN, {0x7fdeb4f81d80, [],
> SA_RESTORER|SA_SIGINFO, 0x7fdeb4f8bb10}, NULL, 8) = 0
> rt_sigaction(SIGRT_1, {0x7fdeb4f81e10, [],
> SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x7fdeb4f8bb10},
> NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1],
> NULL, 8) = 0 getrlimit(RLIMIT_STACK,
> {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
> statfs("/sys/fs/selinux", 0x7ffe1b4e8b00) = -1 ENOENT
> (No such file or directory) statfs("/selinux",
> {f_type="EXT2_SUPER_MAGIC", f_bsize=4096,
> f_blocks=474903111, f_bfree=452714842,
> f_bavail=452228240, f_files=120627200,
> f_ffree=120300880, f_fsi\ d={352889743, -1913047647},
> f_namelen=255, f_frsize=4096}) = 0 brk(0) =
> 0x5573deaf5000 brk(0x5573deb16000) = 0x5573deb16000
> open("/proc/filesystems", O_RDONLY) = 3 fstat(3,
> {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 mmap(NULL,
> 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
> -1, 0) = 0x7fdeb770b000 read(3,
> "nodev\tsysfs\nnodev\trootfs\nnodev\tr"..., 1024) =
> 297 read(3, "", 1024) = 0 close(3) = 0
> munmap(0x7fdeb770b000, 4096) = 0
> access("/etc/selinux/config", F_OK) = -1 ENOENT (No
> such file or directory) stat("/dev/urandom",
> {st_mode=S_IFCHR|0666, st_rdev=makedev(1, 9), ...}) =
> 0 open("/dev/urandom", O_RDONLY|O_CLOEXEC) = 3 read(3,
> "\355\207\254Q\253\17d\266\22x\324\257
> \236\205H\327b\32\221nzmx\251\216D\257J\362\301\357"...,
> 60) = 60 close(3) = 0 open("/dev/urandom",
> O_RDONLY|O_NOCTTY|O_NONBLOCK|O_CLOEXEC) = 3 fstat(3,
> {st_mode=S_IFCHR|0666, st_rdev=makedev(1, 9), ...}) =
> 0 poll([{fd=3, events=POLLIN}], 1, 10) = 1 ([{fd=3,
> revents=POLLIN}]) read(3,
> "r\324\5\243C\224\n\222d\333\25\25\2738\7\ts\351\3759\265\207&\n\251}\316
> \20 5\224v\17\253"..., 1024) = 1024 close(3) = 0
> getuid() = 0 stat("/dev/urandom",
> {st_mode=S_IFCHR|0666, st_rdev=makedev(1, 9), ...}) =
> 0 open("/dev/urandom", O_RDONLY|O_CLOEXEC) = 3 read(3,
> "\3323i\236\226J\353\241\201\213\20\30\201b<\371\5\246\234\230",
> 20) = 20 close(3) = 0 stat("/dev/urandom",
> {st_mode=S_IFCHR|0666, st_rdev=makedev(1, 9), ...}) =
> 0 open("/dev/urandom", O_RDONLY|O_CLOEXEC) = 3 read(3,
> "u2V%3\367\276\251\202$\376_\1\365r`N^\5?\303H\330\3173i\335\247]A\222\37
> 6". .., 256) = 256 close(3) = 0 stat("/dev/urandom",
> {st_mode=S_IFCHR|0666, st_rdev=makedev(1, 9), ...}) =
> 0 open("/dev/urandom", O_RDONLY|O_CLOEXEC) = 3 read(3,
> "\333_\2\335]:\7\"\373s]\352\375\305\312t\244.@;\245\345\245^(\262d\350\2
> 73[ \327-"..., 216) = 216 close(3) = 0
> stat("/dev/urandom", {st_mode=S_IFCHR|0666,
> st_rdev=makedev(1, 9), ...}) = 0 open("/dev/urandom",
> O_RDONLY|O_CLOEXEC) = 3 read(3, "\207", 1) = 1
> close(3) = 0 stat("/dev/urandom",
> {st_mode=S_IFCHR|0666, st_rdev=makedev(1, 9), ...}) =
> 0 open("/dev/urandom", O_RDONLY|O_CLOEXEC) = 3 read(3,
> "\332", 1) = 1 close(3) = 0 stat("/dev/urandom",
> {st_mode=S_IFCHR|0666, st_rdev=makedev(1, 9), ...}) =
> 0 open("/dev/urandom", O_RDONLY|O_CLOEXEC) = 3 read(3,
> "\22\335\242$\210`\376\376d\200\215m\213-\0162\r\257\206\335\nY\343\3376/
> \22 4\352\360\312\336\360", 32) = 32 close(3) = 0
> stat("/dev/urandom", {st_mode=S_IFCHR|0666,
> st_rdev=makedev(1, 9), ...}) = 0 open("/dev/urandom",
> O_RDONLY|O_CLOEXEC) = 3 read(3,
> "U\2\251M\21fm\345\334\215Q1(\253\1M!\270\226\212s&A\263}\351\16\271",
> 28) = 28 close(3) = 0 futex(0x7fdeb5bf30a8,
> FUTEX_WAKE_PRIVATE, 2147483647) = 0
> open("/lib64/.libcrypto.so
> <http://libcrypto.so>.1.0.0.hmac", O_RDONLY) = -1
> ENOENT (No such file or directory)
> open("/proc/sys/crypto/fips_enabled", O_RDONLY) = -1
> ENOENT (No such file or directory)
> access("/lib64/.libcrypto.so
> <http://libcrypto.so>.1.0.0.hmac", F_OK) = -1 ENOENT
> (No such file or directory) open("/etc/localtime",
> O_RDONLY|O_CLOEXEC) = 3 fstat(3,
> {st_mode=S_IFREG|0644, st_size=127, ...}) = 0 fstat(3,
> {st_mode=S_IFREG|0644, st_size=127, ...}) = 0
> mmap(NULL, 4096, PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdeb770b000
> read(3,
> "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\0\0\0\1\0\0\0\0"...,
> 4096) = 127 lseek(3, -71, SEEK_CUR) = 56 read(3,
> "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\0\0\0\1\0\0\0\0"...,
> 4096) = 71 close(3) = 0 munmap(0x7fdeb770b000, 4096) =
> 0 socket(PF_LOCAL, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 3
> connect(3, {sa_family=AF_LOCAL, sun_path="/dev/log"},
> 110) = 0 sendto(3, "<11>May 23 10:11:18 imapd:
> could"..., 67, MSG_NOSIGNAL, NULL, 0) = 67
> exit_group(70) = ? +++ exited with 70 +++ Michael On
> 05/19/2017 05:55 PM, Michael Ulitskiy wrote: Msg #
> 57050 Previous in Sequence
> <http://asg.andrew.cmu.edu/archive/message.php?mailbox=archive.info-cyrus
> &ms g=57374> Date Fri, 19 May 2017 11:32:38 -0400 To
> info-cyrus at lists.andrew.cmu.edu From Michael Ulitskiy
> <mulitskiy at acedsl.com> Reply-To: Michael Ulitskiy
> <mulitskiy at acedsl.com> Subject Re: Multi-thread cyrus
> delayed forking of imapd processes after connecting to
> master listener My immediate guess is it blocks at
> reading /dev/random. strace should show you exactly
> where it blocks. What version of SASL are you using?
> Newer versions have switched to /dev/urandom AFAIK
> Michael On Friday, May 19, 2017 05:48:36 PM Michael
> Hieb wrote:
>
> Apologies for long post, most of it is
> configuration details. I have recently changed
> from a single threaded cyrus server in which
> multiple domains were overloaded on one listener
> as multiple virtual domains to a multiple threaded
> cyrus server in which multiple domains are
> listened for on separate ip addresses with
> separate configurations. The primary motivation
> was to have separate tls certificates for each
> domain. The problem is that I can connect to cyrus
> listener on all ip/ports for all domains, but
> while one of them will fork immediately and
> respond with a banner, the others will delay for a
> period of time from a few seconds to a minute or
> so before forking and responding with a banner.
> With the same setup, I change to a single threaded
> cyrus server to listen on all ip/ports then I get
> an immediate response on all, but of course I do
> not get the separate tls certificate or
> configuration. It is replicable that switching
> between the single threaded and multiple threaded
> configuration triggers the problem. I have
> searched the logs and the mail-lists and found
> nothing that seems related. Question: why does
> switching to multiple threaded cyrus server
> trigger delayed forking of imapd processes after
> connecting to master listener? On listener which
> responds immediately (as expected) I get this:
> user at somehost:~> telnet imap.domain1.com
> <http://imap.domain1.com> 143 Trying
> 192.168.110.171 <http://192.168.110.171>...
> Connected to imap.domain1.com
> <http://imap.domain1.com>. Escape character is
> '^]'. * OK [CAPABILITY IMAP4rev1 LITERAL+ ID
> ENABLE STARTTLS AUTH=GSS-SPNEGO AUTH=GSSAPI
> AUTH=DIGEST-MD5 AUTH=CRAM-MD5 AUTH=LOGIN
> AUTH=PLAIN SASL-IR] imap.domain1.com
> <http://imap.domain1.com> Cyrus IMAP v2.4.18
> server ready On listener with delay, I get this
> (and process hangs for many seconds or even a
> minute or two): user at somehost:~> telnet
> imap.domain2.com <http://imap.domain2.com> 143
> Trying 192.168.110.171 <http://192.168.110.171>...
> Connected to imap.domain2.com
> <http://imap.domain2.com>. Escape character is
> '^]'. The domain for which the listener responds
> and the one for which it delays seems to change
> and be random as far as I can tell. There is nothing
>
>
> --
> Sent from my Android device with K-9 Mail. Please excuse my brevity.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.andrew.cmu.edu/pipermail/info-cyrus/attachments/20170525/20788b7d/attachment-0001.html>
More information about the Info-cyrus
mailing list