forked from Nordix/xcluster
-
Notifications
You must be signed in to change notification settings - Fork 0
/
xcluster.sh
executable file
·1121 lines (1028 loc) · 29.7 KB
/
xcluster.sh
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
#! /bin/sh
##
## xcluster.sh --
##
## Xcluster is a fast and highly configurable environment for
## cluster and network testing.
##
## Main functions;
##
## * Create a Linux netns for testing
## * Build a disk image
## * Start/stop a VM test-cluster with brigded networks
##
## Xcluster consists of a number of (kvm) VMs with identical
## disks. The disk image is shared by all VMs and the qemu
## "backing_file" is used to allow individual updates by the VMs.
##
## The VMs will have a host name like "vm-201" and the number is
## used to give the VMs a "role". Used roles are;
##
## 001-200 Cluster Nodes
## 201-220 Routers
## 221-240 Testers
## 250- Reserved
##
## To install SW an very simple "overlay" function is provided. A
## number of tar-files are stored on a cd-image and are unpacked on
## system root ("/") at start-up. This works as a primitive "package
## manager".
##
## The xcluster should execute inside a Linux network
## namespace. Functions for creating a netns are provided but
## requires "sudo" access.
##
## Commands;
##
prg=$(basename $0)
dir=$(dirname $0); dir=$(readlink -f $dir)
me=$dir/$prg
tmp=/tmp/${prg}_$$
die() {
echo "ERROR: $*" >&2
rm -rf $tmp
exit 1
}
help() {
grep '^##' $0 | cut -c3-
test -n "$XCLUSTER_HOOK" -a -r "$XCLUSTER_HOOK" && \
grep '^##' $XCLUSTER_HOOK | cut -c3-
rm -rf $tmp
exit 0
}
test -n "$1" || help
echo "$1" | grep -qi "^help\|-h" && help
log() {
echo "$prg: $*" >&2
}
findf() {
f=$ARCHIVE/$1
test -r $f && return
# (order is important, test Downloads last)
f=$HOME/Downloads/$1
test -r $f
}
test -n "$xcluster_PREFIX" || xcluster_PREFIX=fd00:
# This function is only here to be replaced in a $XCLUSTER_HOOK.
# It should contain custom preparations for different commands.
prepare() {
# Check the $cmd variable and make appropriate preparations
test $cmd = "env" && true
}
## env
## Show settings.
##
cmd_env() {
test "$envread" = "yes" && return
envread=yes
prepare
test -n "$XCLUSTER_WORKSPACE" || XCLUSTER_WORKSPACE=/tmp/$USER/xcluster/workspace
test -n "$XCLUSTER" || export XCLUSTER=$me
test -n "$XCLUSTER_HOME" || XCLUSTER_HOME=$XCLUSTER_WORKSPACE/xcluster
if test -z "$XCLUSTER_TMP"; then
local mynetns=$(ip netns id)
if test -n "$mynetns"; then
XCLUSTER_TMP="/tmp/$USER/xcluster/$mynetns/tmp"
else
XCLUSTER_TMP="/tmp/$USER/xcluster/tmp"
fi
fi
test -n "$XCLUSTER_MONITOR_BASE" || XCLUSTER_MONITOR_BASE=4000
test -n "$XCLUSTER_OVLPATH" || XCLUSTER_OVLPATH=$dir/ovl
test -n "$ARCHIVE" || ARCHIVE=$HOME/Downloads
test -n "$KERNELDIR" || KERNELDIR=$HOME/tmp/linux
export ARCHIVE
test -n "$__kver" || __kver=linux-6.9.3
test -n "$__kobj" || __kobj=$XCLUSTER_HOME/obj-$__kver
if test -z "$__kbin"; then
__kbin=$XCLUSTER_HOME/bzImage-$__kver
test -r $__kbin || __kbin=$XCLUSTER_HOME/bzImage
fi
test -n "$__kcfg" || __kcfg=$dir/config/$__kver
test -n "$__bbver" || __bbver=busybox-1.36.1
test -n "$__kvm" || __kvm=kvm
test -n "$__image" || __image=$XCLUSTER_HOME/hd.img
test -n "$__cdrom" || __cdrom=$XCLUSTER_TMP/cdrom.iso
test -n "$__machine" || __machine="pc"
test -n "$__mem" || __mem=128
test -n "$__smp" || __smp=2
test -n "$__ipv4_base" || __ipv4_base=172.30.0.0/24
test -n "$__ipv6_prefix" || __ipv6_prefix=fd00:1723::
test -n "$__loader" || __loader=/lib64/ld-linux-x86-64.so.2
test -n "$__cached" || __cached=$XCLUSTER_HOME/cache
test -n "$__nets_vm" || __nets_vm=0,1
test -n "$__nets_router" || __nets_router=0,1,2
test -n "$__base_libs" || __base_libs=$XCLUSTER_HOME/base-libs.txt
__ipver=6.3.0
__dropbearver=2024.85
__diskimver=1.0.0
test -n "$DISKIM" || DISKIM=$XCLUSTER_WORKSPACE/diskim-$__diskimver/diskim.sh
if test "$cmd" = "env"; then
set | grep -E '^(__.+=|XCLUSTER|ARCHIVE=|DISKIM=|KERNELDIR=)' | sort
exit 0
fi
echo $XCLUSTER_WORKSPACE | grep -q '^/tmp/' && \
echo 'WARNING: $XCLUSTER_WORKSPACE is on /tmp'
mkdir -p $XCLUSTER_HOME || die "Failed mkdir [$XCLUSTER_HOME]"
mkdir -p $XCLUSTER_TMP || die "Failed mkdir [$XCLUSTER_TMP]"
}
cmd_completion() {
grep -oE "^cmd_[a-zA-Z_0-9]+" $me | grep "cmd_$1" | sed -e 's,cmd_,,'
}
## Network name-space commands;
## nsadd_docker <index>
## nsadd [--ipv4-base=172.30.0.0] [--ipv6-prefix=fd00:1723::] <index>
## nsdel <index>
## nsenter <index>
##
cmd_nsadd() {
test -n "$1" || die 'No index'
XCLUSTER_WORKSPACE=$tmp
local netns=${USER}_xcluster$1
ip netns | grep -qe "^$netns " && die "Netns already exist [$netns]"
sudo ip netns add $netns
ip link add dev xcluster$1 type veth peer name host$1
ip link set xcluster$1 up
set_netns_ipv4_addresses $1
ip addr add $ipv4_host/32 dev xcluster$1
ip ro add $ipv4_ns/32 dev xcluster$1
ip -6 addr add $__ipv6_prefix$ipv4_host/128 dev xcluster$1
ip -6 ro add $__ipv6_prefix$ipv4_ns/128 dev xcluster$1
ip link set host$1 netns $netns
sudo ip netns exec $netns env xcluster_PREFIX=$xcluster_PREFIX \
$me nssetup --ipv4-base=$__ipv4_base --ipv6-prefix=$__ipv6_prefix $1
sudo $me masq --ipv4-base=$__ipv4_base
mkrmtap
}
cmd_nsadd_docker() {
test -n "$1" || die 'No index'
XCLUSTER_WORKSPACE=$tmp
local netns=${USER}_xcluster$1
ip netns | grep -qe "^$netns " && die "Netns already exist [$netns]"
sudo ip netns add $netns
ip link add dev xcluster$1 type veth peer name host$1
ip link set xcluster$1 up
ip link set dev xcluster$1 master docker0
cmd_docker_net $1
ip link set host$1 netns $netns
sudo ip netns exec $netns env xcluster_PREFIX=$xcluster_PREFIX \
$me nssetup --docker --adr4=$adr4 --gw4=$gw4 --adr6=$adr6 --gw6=$gw6 $1
mkrmtap
}
cmd_docker_net() {
test -n "$1" || die 'No index'
local i=$1
ip link show docker0 > /dev/null || die "Can't find docker0"
mkdir -p $tmp
local conf=$tmp/docker-bridge
docker network inspect bridge > $conf || die "Failed; inspect bridge"
local n
for n in $(jq -r .[].IPAM.Config[].Subnet < $conf); do
if echo $n | grep -q :; then
cidr6=$n
else
cidr4=$n
fi
done
for n in $(jq -r .[].IPAM.Config[].Gateway < $conf); do
if echo $n | grep -q :; then
gw6=$n
else
gw4=$n
fi
done
#log "Docker subnets; $cidr4 $cidr6, GWs; $gw4 $gw6"
n=$(echo $cidr4 | cut -d/ -f2)
test $n -gt 26 && die "Too narrow range; $cidr4"
# Now we steal a docker address and *hope* it will not collide
# with any address assigned to containers.
local b0=$(echo $cidr4 | cut -d/ -f1 | cut -d. -f4)
b0=$((b0 + 50 + i))
adr4="$(echo $cidr4 | cut -d/ -f1 | cut -d. -f-3).$b0/$n"
test -n "$cidr6" && adr6=$(echo $cidr6 | sed "s,:/,:$b0/,")
log "Xcluster netns; $adr4 $adr6"
}
mkrmtap() {
# Create /tmp/rmtap that will be called by qemu on VM-termination
if ! test -x /tmp/rmtap; then
cat > /tmp/rmtap <<"EOF"
#! /bin/sh
ip link del dev $1
EOF
chmod a+x /tmp/rmtap
fi
}
cmd_nsdel() {
test -n "$1" || die 'No index'
local netns=${USER}_xcluster$1
ip netns | grep -qe "^$netns" || die "Netns does not exist [$netns]"
sudo ip netns del $netns
ip link del dev xcluster$1
}
cmd_nsenter() {
test -n "$1" || die 'No index'
local netns=${USER}_xcluster$1
unset KUBECONFIG XCLUSTER
exec ip netns exec $netns /bin/bash
}
cmd_nssetup() {
test -n "$1" || die 'No index'
ip link set lo up
ip link set host$1 up
if test "$__docker" = "yes"; then
ip addr add $__adr4 dev host$1
ip ro add default via $__gw4
if test -n "$__adr6"; then
ip -6 addr add $__adr6 dev host$1
ip -6 ro add default via $__gw6
fi
else
set_netns_ipv4_addresses $1
ip addr add $ipv4_ns/32 dev host$1
ip ro add $ipv4_host/32 dev host$1
ip ro add default via $ipv4_host
ip -6 addr add $__ipv6_prefix$ipv4_ns/128 dev host$1
ip -6 ro add $__ipv6_prefix$ipv4_host/128 dev host$1
ip -6 ro add default via $__ipv6_prefix$ipv4_host
fi
iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -o host$1 -j MASQUERADE
ip6tables -t nat -A POSTROUTING -s $xcluster_PREFIX:192.168.0.0/120 -o host$1 -j MASQUERADE
echo 1 > /proc/sys/net/ipv4/conf/all/forwarding
echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
cmd_br_setup 0
cmd_br_setup 1
cmd_br_setup 2
}
cmd_masq() {
set_netns_ipv4_addresses 0
iptables -t nat -L -nv | grep -q "$ipv4_masq" && return 0
echo 1 > /proc/sys/net/ipv4/conf/all/forwarding
echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
iptables -t nat -A POSTROUTING -s $ipv4_masq -j MASQUERADE
iptables -A FORWARD -s $ipv4_masq -j ACCEPT
iptables -A FORWARD -d $ipv4_masq -j ACCEPT
}
# set_netns_ipv4_addresses <index>
# Set the global variables; ipv4_host ipv4_ns ipv4_masq
set_netns_ipv4_addresses() {
test -n "$1" || die "No index"
test -n "$ipv4_host" && return 0
local i=$1
# The __ipv4_base can be specified in 2 ways;
# Old-way; 172.30
# New-way: 127.30.0.0/28
if echo $__ipv4_base | grep -qE '^[0-9]+\.[0-9]+$'; then
# Old way (backward compatible)
ipv4_host=$__ipv4_base.1.$1
ipv4_ns=$__ipv4_base.0.$1
ipv4_masq=$__ipv4_base.0.0/22
return
fi
echo $__ipv4_base | grep -qE '^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/[0-9]+$' \
|| die "Syntax err --ipv4-base=$__ipv4_base"
ipv4_masq=$__ipv4_base
local ipv4=$(echo $__ipv4_base | cut -d/ -f1)
local b0=$(echo $ipv4 | cut -d. -f4)
local pre=$(echo $ipv4 | cut -d. -f-3)
ipv4_host=$pre.$((b0+1+i*2))
ipv4_ns=$pre.$((b0+i*2))
}
cmd_br_setup() {
test -n "$1" || die 'No index'
local i=$1
shift
local dev=xcbr$i
if ip link show dev $dev > /dev/null 2>&1; then
log "Bridge already exists [$dev]"
return 0
fi
test -n "$__mtu" || __mtu=1500
# https://interestingtraffic.nl/2017/11/21/an-oddly-specific-post-about-group_fwd_mask/
ip link add name $dev mtu $__mtu type bridge group_fwd_mask 0x4000 $@ || \
die "Failed to create bridge [$dev]"
ip link set $dev up
ip addr add 192.168.$i.250/24 dev $dev
ip -6 addr add $xcluster_PREFIX:192.168.$i.250/120 dev $dev
}
## Build functions;
## kernel_build [--kver=linux-x.x.x] [--kobj=dir] [--kbin=file] \
## [--kcfg=file] [--kpatch=file] [--menuconfig]
## busybox_build [--menuconfig]
## dropbear_build
## iproute2_build
##
cmd_kernel_build() {
test "$__kbin" = "$XCLUSTER_HOME/bzImage" && __kbin="$__kbin-$__kver"
# diskim doesn't search for the kernel archive in $HOME/Downloads
if findf $__kver.tar.xz; then
echo $f | grep -q "$ARCHIVE" || mv $f $ARCHIVE
else
$DISKIM kernel_download --kver=$__kver
fi
if test -f "$__kpatch"; then
test -r "$__kpatch" || die "Kpatch not readable [$__kpatch]"
rm -rf $KERNELDIR/$__kver
$DISKIM kernel_unpack --kver=$__kver --kdir=$KERNELDIR/$__kver
patch -d $KERNELDIR/$__kver -p1 < $__kpatch || die "Kpatch failed"
fi
mkdir -p $KERNELDIR $__kobj
cmd_cpio_list $dir/image/initfs > $__kobj/cpio_list
$DISKIM kernel_build --kdir=$KERNELDIR/$__kver --kernel=$__kbin \
--kver=$__kver --kobj=$__kobj --kcfg=$__kcfg \
--menuconfig=$__menuconfig \
|| die "Kernel build failed [$__kver]"
if grep -q cpio_list $__kcfg; then
cmd_emit_cpio_list > $__kobj/cpio_list
$DISKIM kernel_build --kdir=$KERNELDIR/$__kver --kernel=$__kbin \
--kver=$__kver --kobj=$__kobj --kcfg=$__kcfg \
|| die "Kernel build failed [$__kver]"
fi
}
cmd_emit_cpio_list() {
test -n "$__tmp" || __tmp=$tmp
mkdir -p $__tmp
if grep -q "^CONFIG_MODULES=y" $__kcfg; then
INSTALL_MOD_PATH=$__tmp make -C $__kobj modules_install 1>&2 > /dev/null \
|| die "Failed to install modules from [$__kobj]"
fi
cmd_cpio_list $__tmp
cmd_cpio_list $dir/image/initfs
cat <<EOF
dir /dev 755 0 0
nod /dev/console 644 0 0 c 5 1
dir /bin 755 0 0
file /bin/busybox /bin/busybox 755 0 0
EOF
}
cmd_cpio_list() {
test -n "$1" || return 0
local n f p
for n in $(find "$1" -mindepth 1); do
f=$(echo $n | sed -e "s,$1,,")
if test -d $n; then
echo "dir $f 0755 0 0"
elif test -f $n; then
p=0544
test -x $n && p=0755
echo "file $f $n $p 0 0"
else
die "Unknown file [$n]"
fi
done
}
cmd_busybox_build() {
local ar=$__bbver.tar.bz2
if ! findf $ar; then
local url=http://busybox.net/downloads/$__bbver.tar.bz2
curl -L $url > $ar || die "Could not download [$url]"
fi
local d=$XCLUSTER_WORKSPACE/$__bbver
test "$__clean" = "yes" && rm -rf $d
if ! test -d $d; then
tar -C $XCLUSTER_WORKSPACE -xf $f || die "Failed to unpack [$f]"
patch -d $d -p1 < $dir/config/busybox.patch
fi
local bbcfg=$dir/config/$__bbver
if test -r $bbcfg; then
cp $bbcfg $d/.config
else
make -C $d allnoconfig
__menuconfig=yes
fi
if test "$__menuconfig" = "yes"; then
make -C $d menuconfig
cp $d/.config $bbcfg
else
make -C $d oldconfig
fi
make -C $d -j$(nproc)
}
cmd_iproute2_build() {
d=$XCLUSTER_WORKSPACE/iproute2-$__ipver
test "$__clean" = "yes" && rm -rf $d
if ! test -d $d; then
local ar=iproute2-$__ipver.tar.xz
if ! findf $ar; then
local url=https://www.kernel.org/pub/linux/utils/net/iproute2
curl -L $url/$ar > $f || die "download [$ar]"
fi
tar -C $XCLUSTER_WORKSPACE -xf $f || die "Failed to unpack [$ar]"
fi
local kdir=$KERNELDIR/$__kver
test -d "$kdir" || die "Not a directory [$kdir]"
cd $kdir/tools/lib/bpf || die cd
make -j$(nproc) || die "Make libbpf"
make DESTDIR=$XCLUSTER_WORKSPACE/sys prefix=/usr install \
|| die "Make libbpf install sys"
if ! test -x $d/ip/ip; then
cd $d
./configure --libbpf_dir=$XCLUSTER_WORKSPACE/sys
KERNEL_INCLUDE=$__kobj/include \
make -j $(nproc) || die "Make iproute2 failed"
fi
}
cmd_dropbear_build() {
local ar=dropbear-$__dropbearver.tar.bz2
if ! findf $ar; then
local url=https://matt.ucc.asn.au/dropbear/releases/$ar
curl -L $url > $f || die "Download failed [$ar]"
fi
local d=$XCLUSTER_WORKSPACE/dropbear-$__dropbearver
test "$__clean" = "yes" && rm -rf $d
test -x $d/dropbear && die "Already built at [$d]"
tar -C $XCLUSTER_WORKSPACE -xf $f
cd $d
echo '#define DEFAULT_PATH "/usr/bin:/bin:/sbin:/usr/sbin"' > localoptions.h
./configure || die configure
export PROGRAMS='dropbear scp dbclient dropbearkey dropbearconvert'
make -j $(nproc) || die make
make strip
}
## Image functions;
## mkimage [--image=file] [--bootable] [--format=qcow2] [--size=2G]
## cache [--clear] [--list] [ovl|tar...]
## ximage [--image=file] [--script=file] [ovl|tar...]
## mkcdrom [--label=label] [--script=file] [--cidata=dir] [ovl|tar...]
## install_prog [--base-libs=file] --dest=dir [prog...]
## cplib [--base-libs=file] --dest=dir
## libs [--base-libs=file]
## cploader --dest=dir
cmd_mkimage() {
test -r $__kbin || die "Kernel not built [$__kbin]"
test -x $XCLUSTER_WORKSPACE/$__bbver/busybox || cmd_busybox_build
test -x $XCLUSTER_WORKSPACE/iproute2-$__ipver/ip/ip || cmd_iproute2_build
test -x $XCLUSTER_WORKSPACE/dropbear-$__dropbearver/dropbear || cmd_dropbear_build
test -n "$__version" || __version=$(date +%Y.%m.%d)
__version=$__version $DISKIM mkimage --image=$__image --bootable=$__bootable \
--format=$__format --size=$__size $dir/image
# Update base-libs
rm -f $__base_libs
if ! test -r $__base_libs; then
for l in $($dir/image/tar - | tar t | grep -E '.*/lib.*\.so\.'); do
echo "/$l" >> $__base_libs
done
fi
# Ubuntu 19 work-around; libpcre.so.3 doesn't exist;
sed -i -e '/libpcre.so.3/d' $__base_libs
}
cmd_cache() {
if test "$__list" = "yes"; then
echo "Cache dir [$__cached];"
find "$__cached" -type f | sed -e "s,$__cached/,,"
return 0
fi
test "$__clear" = "yes" && rm -rf "$__cached"
local d n dest
dest="$__cached/default"
if test -n "$SETUP"; then
echo "$SETUP" | grep -q , && die "SETUP has many items [$SETUP]"
dest="$__cached/$SETUP"
fi
mkdir -p $dest
for n in $@; do
d=$(cmd_ovld $n) || die "Can't find ovl [$n]"
test -x $d/tar || die "Not executable [$d/tar]"
$d/tar "$dest/$n.tar"
rm -f "$dest/$n.tar.xz"
xz -T0 "$dest/$n.tar"
done
}
cmd_cached_tar() {
test -n "$1" || return 1
local n
for n in $(echo "$SETUP" | tr ',' ' ') default; do
if test -r $__cached/$n/$1.tar.xz; then
echo $__cached/$n/$1.tar.xz
return 0
fi
done
return 1
}
cmd_ximage() {
local c d ovls
# Find ovls
for d in $@; do
if c=$(cmd_cached_tar $d); then
echo "Use Cached [$c]"
d=$c
elif ! test -r $d; then
d=$(cmd_ovld $d) || return
test -x $d/tar || die "Not executable [$d/tar]"
fi
ovls="$ovls $d"
done
rm -f "$__cdrom"
cmd_stop
$DISKIM ximage --image=$__image --script=$__script $ovls || die "diskim failed"
}
cmd_install_prog() {
test -n "$__root" && __dest=$__root # backward compatibility
test -n "$__dest" || die 'No --dest'
mkdir -p $__dest/bin || die "Mkdir failed [$__dest/bin]"
local n f files
for n in $@; do
if test -x $n; then
f=$(readlink -f $n)
else
f=$(which $n)
if ! test -n "$f" -a -x "$f"; then
log "WARNING: Program not found [$n]"
continue
fi
fi
cp $f $__dest/bin
files="$files $f"
done
cmd_cplib $files
}
cmd_cplib() {
test -n "$__dest" || die 'No --dest'
test -d "$__dest" || die "Not a directory [$__dest]"
cmd_libs $@ | cpio -p --make-directories --dereference --quiet -u $__dest
}
cmd_libs() {
local f libs=$tmp/libs
mkdir -p $tmp
touch $libs
for f in $@; do
test -x $f || continue
ldd $f | grep '=> /' | sed -re 's,.*=> (/[^ ]+) .*,\1,' | \
grep -v "$XCLUSTER_WORKSPACE" >> $libs
done
if test -r $__base_libs; then
for f in $(sort $libs | uniq); do
grep -q $f $__base_libs || echo $f
done
else
sort $libs | uniq
fi
}
cmd_cploader() {
test -n "$__dest" || die 'No --dest'
test -d "$__dest" || die "Not a directory [$__dest]"
# TODO: Fix this!!
mkdir -p $__dest/lib64
cp -L /lib64/ld-linux-x86-64.so.2 $__dest/lib64
}
cmd_mkcdrom() {
if test -z "$1"; then
rm -f $__cdrom
return 0
fi
__dest=$tmp/cdrom
mkdir -p $__dest
cmd_collect_tar $@
if test -n "$__cidata"; then
test -n "$__label" || __label=cidata
test -d "Cidata is not a directory [$__cidata]"
cp -R $__cidata/* $__dest
fi
if test -n "$__script"; then
test -s "$__script" || die "Not a file (or empty) [$__script]"
cp "$__script" $__dest/script
fi
ls $__dest
test -n "$__label" || __label=xcluster
genisoimage -quiet -volid $__label -o $__cdrom -r -J $__dest
rm -rf $__dest
unset __dest
}
cmd_cat_tar() {
test -n "$1" || return 0
test -r "$1" || die "Not readable [$1]"
local t="$(file $1)"
if echo $t | grep -q 'POSIX tar'; then
cat "$1"
elif echo $t | grep -q 'bzip2 compressed'; then
bzcat "$1"
elif echo $t | grep -q 'XZ compressed'; then
xz -cd "$1"
elif echo $t | grep -q 'gzip compressed'; then
pigz -cd "$1"
fi
}
cmd_collect_tar() {
test -n "$__dest" || die "No dest"
test -d "$__dest" || die "Not a directory [$__dest]"
local c d b i=0 collected=:
for d in $@ $XOVLS; do
echo $collected | grep -Fq ":$d:" && continue
collected="$collected$d:"
# Check the cache
if c=$(cmd_cached_tar $d); then
echo "Use Cached [$c]"
d=$c
fi
if test -f $d; then
b=$(basename $d | cut -d. -f1)
cmd_cat_tar $d > "$__dest/$(printf "%02d$b.tar" $i)"
elif test -x $d/tar; then
b=$(basename $d)
$d/tar "$__dest/$(printf "%02d$b.tar" $i)" || die "$d/tar failed"
else
b=$d
d=$(cmd_ovld $d) || return
test -x $d/tar || die "Not executable [$d/tar]"
$d/tar "$__dest/$(printf "%02d$b.tar" $i)" || die "$d/tar failed"
fi
i=$((i+1))
done
}
## inject [--sudo=sudo] [--key=file] --addr=root@... [ovl...]
## Install ovl's on a running target. The target does not have to be a
## xcluster VM. Example inject on an AWS instance;
##
## xc inject --sudo=sudo --key=$HOME/.ssh/aws-key.pem \
## [email protected] etcd
##
cmd_inject() {
local ovl ovld
local sshopt="-o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no"
if test -n "$__key"; then
test -r "$__key" || die "Not readable [$__key]"
sshopt="$sshopt -i $__key"
fi
for ovl in $@; do
ovld=$(cmd_ovld $ovl)
$ovld/tar - | ssh $sshopt $__addr $__sudo tar -C / -x
done
}
## Utilities;
## ovld ovl
## rsh [--bg] <vm> command...
## rcp <vm> <remote-file> <local-file>
## tcpdump --start|get <vm> <interface> [opts...]
## tcpdump --get <vm> <interface...>
## stop_vm <vm>
## Stop VM emulation
## reset_vm <vm>
## Reset VM and continue emulation
##
cmd_ovld() {
test -n "$1" || die "No ovl"
local d
for d in $(echo $XCLUSTER_OVLPATH | tr : ' '); do
if test -d $d/$1; then
echo "$d/$1"
return 0
fi
done
die "Ovl not found [$1]"
}
sshopt="-o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no"
cmd_rsh() {
test -n "$1" || die "No VM"
local vm=$1
shift
local adr
if ip link show xcbr1 > /dev/null 2>&1; then
adr="[email protected].$vm"
else
adr="-p $((12300+vm)) [email protected]"
fi
if test "$__bg" = "yes"; then
ssh -q $sshopt $adr sh -c "'$@ > /dev/null 2>&1 &'"
else
ssh -q $sshopt $adr $@
fi
}
cmd_rcp() {
test -n "$2" || die "Too few parameters"
local vm=$1
shift
if ip link show xcbr1 > /dev/null 2>&1; then
scp -q $sshopt [email protected].$vm:$1 $2
else
scp -q $sshopt -P $((12300+vm)) [email protected]:$1 $2
fi
}
cmd_tcpdump() {
test -n "$2" || die "Too few parameters"
local vm=$1; shift
local iface file
if test "$__start" = "yes"; then
__bg=yes
iface=$1; shift
file=$(printf "/tmp/vm-%03u-$iface.pcap" $vm)
cmd_rsh $vm tcpdump -Z root -ni $iface -w $file $@
elif test "$__get" = "yes"; then
cmd_rsh $vm killall tcpdump
sleep 0.5
for iface in $@; do
file=$(printf "/tmp/vm-%03u-$iface.pcap" $vm)
cmd_rcp $vm $file $file && echo "wireshark $file &"
done
else
die "Either --start or --get must be specified"
fi
}
cmd_stop_vm() {
test -n "$1" || die "No VM"
local vm=$1
cmd_rsh $vm sync
local port=$((XCLUSTER_MONITOR_BASE + vm))
echo stop | nc -N localhost $port > /dev/null 2>&1
}
cmd_reset_vm() {
test -n "$1" || die "No VM"
local vm=$1
local port=$((XCLUSTER_MONITOR_BASE + vm))
# Sync (ext3) fs if the VM is running
echo "info status" | nc -N localhost $port | grep -q "status: running" \
&& cmd_rsh $vm sync
echo "system_reset\rcont" | nc -N localhost $port > /dev/null 2>&1
}
## Cluster commands;
## start [--nvm=4] [--nrouters=2] [--ntesters=0]
## starts [--nvm=4] [--nrouters=2] [--ntesters=0]
## stop
## status
## scaleout nodes...
## scalein nodes...
##
cmd_boot_vm() {
test -n "$1" || die 'No nodeid'
local nodeid=$1
shift
local mport=$((XCLUSTER_MONITOR_BASE+nodeid))
local opt="-monitor telnet::$mport,server,nowait"
test "$__graphic" = "yes" || opt="$opt -nographic"
# Create an overlay-disk
local hd=$XCLUSTER_TMP/hd-$nodeid.img
qemu-img create -f qcow2 -o backing_file="$__image" -F qcow2 $hd
local tvar
eval tvar=\$__mem$nodeid
test -n "$tvar" && __mem=$tvar
eval tvar=\$__smp$nodeid
test -n "$tvar" && __smp=$tvar
echo "Memory: $__mem, smp: $__smp"
rm -rf $tmp
local kvmboot="-drive file=$hd,if=virtio -smp $__smp -k sv -M $__machine"
test -r $__cdrom && kvmboot="$kvmboot -drive file=$__cdrom,if=virtio,media=cdrom"
test -n "$__mtu" || __mtu=1500
local n dev tap append tnets
eval tnets=\$__nets$nodeid
test -n "$tnets" && __nets=$tnets
echo "nets=[$__nets]"
for n in $(echo $__nets | tr , ' '); do
# Customized network setup, e.g. for ovs
if test -n "$__net_setup" -a -x "$__net_setup"; then
echo "CUSTOM NET; $__net_setup"
export __mtu
export __kvm
test "$__mtu" -ne 1500 && append="$append mtu$n=$__mtu"
opt="$opt $($__net_setup $nodeid $n)" || return
continue
fi
dev=xcbr$n
ip link show dev $dev > /dev/null 2>&1 || \
die "Bridge does not exists [$dev]"
tap=${dev}_t$nodeid
b1=$(printf "%02x" $n)
test "$__mtu" -ne 1500 && append="$append mtu$n=$__mtu"
if ip link show dev $tap > /dev/null 2>&1; then
echo "Tap device already exist [$tap]"
else
ip tuntap add $tap mode tap user $USER
ip link set mtu $__mtu dev $tap
ip link set dev $tap master $dev
ip link set up $tap
fi
local b0=$(printf '%02x' $nodeid)
opt="$opt -netdev tap,id=net$n,script=no,downscript=/tmp/rmtap,ifname=$tap"
opt="$opt -device virtio-net-pci,netdev=net$n,mac=00:00:00:01:$b1:$b0"
done
# Allow ^C in the terminals without killing the entire VM
stty intr '^]'
if test "$__bootable" = "yes"; then
exec $__kvm $kvmboot -m $__mem $opt $__kvm_opt
else
eval "__append=\"$__append \${__append$nodeid}\""
exec $__kvm -kernel $__kbin $kvmboot -m $__mem $opt $__kvm_opt \
-append "noapic root=/dev/vda rw init=/init $append $@ $__append"
fi
}
cmd_svm() {
test -n "$1" || die 'No nodeid'
local nodeid=$1
test $nodeid -gt 0 || die "Invalid nodeid [$nodeid]"
echo help | telnet 127.0.0.1 $((XCLUSTER_MONITOR_BASE+nodeid)) 2>&1 | \
grep -q 'Connection refused' || die "Node already active [$nodeid]"
local sfile=$XCLUSTER_TMP/screen/session
test -r $sfile || die "Not readable [$sfile]"
local hname=$(printf "vm-%03d" $nodeid)
screen -S $(cat $sfile) -X screen -t $hname -L $nodeid \
$me boot_vm --nets=$__nets --mem=$__mem --smp=$__smp $nodeid
}
cmd_xvm() {
test -n "$1" || die 'No nodeid'
local nodeid=$1
test $nodeid -gt 0 || die "Invalid nodeid [$nodeid]"
echo help | telnet 127.0.0.1 $((XCLUSTER_MONITOR_BASE+nodeid)) 2>&1 | \
grep -q 'Connection refused' || die "Node already active [$nodeid]"
local x y base=$nodeid
test $nodeid -gt 200 && base=$((base+4))
test $nodeid -gt 220 && base=$((base+6))
x=$(((base-1) / 4 % 2 + 1))
y=$(((base-1) % 4 + 1))
local geometry="$(cmd_geometry $x $y)"
test -n "$__bg" || __bg='#040'
nohup xterm -T "vm-$nodeid" -fg wheat -bg "$__bg" $xtermopt $geometry \
-e $me boot_vm --nets=$__nets --mem=$__mem --smp=$__smp $nodeid \
> /dev/null < /dev/null 2>&1 &
}
cmd_geometry() {
eval ${XCLUSTER_LAYOUT:-"dx=550;dy=220;sz=80x12"}
eval ${XCLUSTER_OFFSET:-"xo=20;yo=50"}
test -n "$1" || die "No X position"
test -n "$2" || die "No Y position"
local x=$1
local y=$2
local X=$(((x-1)*dx+xo))
local Y=$(((y-1)*dy+yo))
echo "-geometry $sz+$X+$Y $xopt"
}
cmd_status() {
local nvm=8 nrouters=4 ntesters=2
test -n "$__nvm" && test "$__nvm" -gt $nvm && nvm=$__nvm
test -n "$__nrouters" && test $__nrouters -gt $nrouters && nrouters=$__nrouters
test -n "$__ntesters" && test $__ntesters -gt $ntesters && ntesters=$__ntesters
local n s alive=0 hvm=0
for n in $(seq 1 $nvm) $(seq 201 $((200+nrouters))) \
$(seq 221 $((220+ntesters))); do
s=alive
if echo help | telnet 127.0.0.1 $((XCLUSTER_MONITOR_BASE+n)) 2>&1 | \
grep -q 'Connection refused'; then
s="dead "
else
alive=$((alive+1))
test $n -le 90 && hvm=$n
fi
test "$__quiet" != "yes" && echo "$s $n"
done
test "$__quiet" != "yes" && echo "Active VMs; $alive, Highest pl; $hvm"
return $alive
}
cmd_start() {
local n dev
if test -z "$__net_setup"; then
for n in 0 1 2; do
dev=xcbr$n
ip link show dev $dev > /dev/null 2>&1 || \
log "WARNING: Bridge not setup [$dev]"
done
fi
test -n "$__nvm" || __nvm=4
__quiet=yes
if ! cmd_status; then
cmd_stop
sleep 1
fi
rm -rf $XCLUSTER_TMP/screen $XCLUSTER_TMP/*.img
__nets=$__nets_vm
for n in $(seq $__nvm); do
cmd_xvm $n
done
test "$__nrouters" || __nrouters=2
if test $__nrouters -gt 0; then
__nets=$__nets_router
__bg='#400'
for n in $(seq 201 $((200+__nrouters))); do
cmd_xvm $n
done
fi
test "$__ntesters" || __ntesters=0
if test $__ntesters -gt 0; then
__nets=0,2
__bg='#004'
for n in $(seq 221 $((220+__ntesters))); do
cmd_xvm $n
done
fi
}
cmd_starts() {
local n dev
if test -z "$__net_setup"; then
for n in 0 1 2; do
dev=xcbr$n
ip link show dev $dev > /dev/null 2>&1 || \
log "WARNING: Bridge not setup [$dev]"
done
fi
test -n "$__nvm" || __nvm=4
__quiet=yes
if ! cmd_status; then
cmd_stop
sleep 1
fi
rm -rf $XCLUSTER_TMP/screen $XCLUSTER_TMP/*.img