🥇Brevis overview et setup de Kata Containers

Hic articulus disseret quomodo operatur Kata Containerset erit etiam practica pars cum nexu Docker.

De quaestionibus communibus cum Docker eorumque solutionibus iam scriptum erathodie exsecutionem ex Kata Continentibus breviter describemus. Kata Vasa secura est continens runtime nixum in machinis virtualibus leve. Operatio cum illis eadem est ac cum aliis vasis, sed praeterea locupletior est solitudo usus technologiae ferrariae virtualizationis. Proiectum anno 2017 incepit, cum communitas eiusdem nominis merger optimarum notionum ex Intel continentibus Serenis et Hyper.sh RunV perfecit, post quod opus in subsidiis variis architecturis, inclusis AMD64, ARM, IBM p— et z. -series. Accedit opus intra hypervisores QEMU, Firecracker, et etiam integratio cum continenti sustentatur. In codice is available at GitHub sub licentia MIT.

Res maiora

Laborans cum nucleo separato, ita reticulum, memoriam et I/O solitudinem praebens, usum hardware solitarii in virtualis extensionibus cogere potest.
Support industriae signa inter OCI (continens forma), Kubernetes CRI
Constans observantia continentium regularium Linux, solitudo absque activitate capitis VMs regularis
Eliminare necessitatem currendi continentia intus plenae armaturae virtualis machinis plenae, interfaces genericas integrationem et deductionem simpliciorem reddere

occasum

Sunt multis optiones institutionis, ex repositoriis institutiones considerabo, in Cento 7 operante rationi fundata.
maximus: Kata Vasorum opus ferramentis tantum sustinetur, virtualisatio procuret non semper operari, etiam opus sse4.1 firmamentum processus a.

Installing Kata Vasis satis simplex est;

Install utilitates ad operandum cum repositoriis:

# yum -y install yum-utils

Inactivare Selinux (rectius est configurare, sed pro simplici hoc disable);

# setenforce 0
# sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config

Coniungimus repositio et institutionem praestare

# source /etc/os-release
# ARCH=$(arch)
# BRANCH="${BRANCH:-stable-1.10}"
# yum-config-manager --add-repo "http://download.opensuse.org/repositories/home:/katacontainers:/releases:/${ARCH}:/${BRANCH}/CentOS_${VERSION_ID}/home:katacontainers:releases:${ARCH}:${BRANCH}.repo"
# yum -y install kata-runtime kata-proxy kata-shim

tionibus

Ut opus cum donario instituam, eius institutio typica est, non dicam fusius:

# rpm -qa | grep docker
docker-ce-cli-19.03.6-3.el7.x86_64
docker-ce-19.03.6-3.el7.x86_64
# docker -v
Docker version 19.03.6, build 369ce74a3c

Mutationes facimus daemon.json:

# cat <<EOF > /etc/docker/daemon.json
{
  "default-runtime": "kata-runtime",
  "runtimes": {
    "kata-runtime": {
      "path": "/usr/bin/kata-runtime"
    }
  }
}
EOF

Sileo docker:

# service docker restart

eget reprehendo

Si continens incipias antequam donarium sileo, videre potes unamem versionem nuclei currens in principali systemate dabit;

# docker run busybox uname -a
Linux 19efd7188d06 3.10.0-1062.12.1.el7.x86_64 #1 SMP Tue Feb 4 23:02:59 UTC 2020 x86_64 GNU/Linux

Post sileo, versio nucleus huius modi similis est:

# docker run busybox uname -a
Linux 9dd1f30fe9d4 4.19.86-5.container #1 SMP Sat Feb 22 01:53:14 UTC 2020 x86_64 GNU/Linux

Plures iunctos!

# time docker run busybox mount
kataShared on / type 9p (rw,dirsync,nodev,relatime,mmap,access=client,trans=virtio)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev type tmpfs (rw,nosuid,size=65536k,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666)
sysfs on /sys type sysfs (ro,nosuid,nodev,noexec,relatime)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,relatime,mode=755)
cgroup on /sys/fs/cgroup/systemd type cgroup (ro,nosuid,nodev,noexec,relatime,xattr,name=systemd)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (ro,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/blkio type cgroup (ro,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/memory type cgroup (ro,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/devices type cgroup (ro,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/perf_event type cgroup (ro,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (ro,nosuid,nodev,noexec,relatime,net_cls,net_prio)
cgroup on /sys/fs/cgroup/freezer type cgroup (ro,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/pids type cgroup (ro,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/cpuset type cgroup (ro,nosuid,nodev,noexec,relatime,cpuset)
mqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)
shm on /dev/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,size=65536k)
kataShared on /etc/resolv.conf type 9p (rw,dirsync,nodev,relatime,mmap,access=client,trans=virtio)
kataShared on /etc/hostname type 9p (rw,dirsync,nodev,relatime,mmap,access=client,trans=virtio)
kataShared on /etc/hosts type 9p (rw,dirsync,nodev,relatime,mmap,access=client,trans=virtio)
proc on /proc/bus type proc (ro,relatime)
proc on /proc/fs type proc (ro,relatime)
proc on /proc/irq type proc (ro,relatime)
proc on /proc/sys type proc (ro,relatime)
tmpfs on /proc/acpi type tmpfs (ro,relatime)
tmpfs on /proc/timer_list type tmpfs (rw,nosuid,size=65536k,mode=755)
tmpfs on /sys/firmware type tmpfs (ro,relatime)

real    0m2.381s
user    0m0.066s
sys 0m0.039s

# time docker run busybox free -m
              total        used        free      shared  buff/cache   available
Mem:           1993          30        1962           0           1        1946
Swap:             0           0           0

real    0m3.297s
user    0m0.086s
sys 0m0.050s

Fast onus temptationis

Ad damna virtualizationis aestimanda - Curro sysbench, ut exempla principalia hanc optionem.

Running sysbench using Docker+containerd

Processus test

sysbench 1.0:  multi-threaded system evaluation benchmark

Running the test with following options:
Number of threads: 1
Initializing random number generator from current time

Prime numbers limit: 20000

Initializing worker threads...

Threads started!

General statistics:
    total time:                          36.7335s
    total number of events:              10000
    total time taken by event execution: 36.7173s
    response time:
         min:                                  3.43ms
         avg:                                  3.67ms
         max:                                  8.34ms
         approx.  95 percentile:               3.79ms

Threads fairness:
    events (avg/stddev):           10000.0000/0.00
    execution time (avg/stddev):   36.7173/0.00

RAM test

sysbench 1.0:  multi-threaded system evaluation benchmark

Running the test with following options:
Number of threads: 1
Initializing random number generator from current time

Initializing worker threads...

Threads started!

Operations performed: 104857600 (2172673.64 ops/sec)

102400.00 MiB transferred (2121.75 MiB/sec)

General statistics:
    total time:                          48.2620s
    total number of events:              104857600
    total time taken by event execution: 17.4161s
    response time:
         min:                                  0.00ms
         avg:                                  0.00ms
         max:                                  0.17ms
         approx.  95 percentile:               0.00ms

Threads fairness:
    events (avg/stddev):           104857600.0000/0.00
    execution time (avg/stddev):   17.4161/0.00

Running sysbench using Docker+Kata Containers

Processus test

sysbench 1.0:  multi-threaded system evaluation benchmark

Running the test with following options:
Number of threads: 1
Initializing random number generator from current time

Prime numbers limit: 20000

Initializing worker threads...

Threads started!

General statistics:
    total time:                          36.5747s
    total number of events:              10000
    total time taken by event execution: 36.5594s
    response time:
         min:                                  3.43ms
         avg:                                  3.66ms
         max:                                  4.93ms
         approx.  95 percentile:               3.77ms

Threads fairness:
    events (avg/stddev):           10000.0000/0.00
    execution time (avg/stddev):   36.5594/0.00

RAM test

sysbench 1.0:  multi-threaded system evaluation benchmark

Running the test with following options:
Number of threads: 1
Initializing random number generator from current time

Initializing worker threads...

Threads started!

Operations performed: 104857600 (2450366.94 ops/sec)

102400.00 MiB transferred (2392.94 MiB/sec)

General statistics:
    total time:                          42.7926s
    total number of events:              104857600
    total time taken by event execution: 16.1512s
    response time:
         min:                                  0.00ms
         avg:                                  0.00ms
         max:                                  0.43ms
         approx.  95 percentile:               0.00ms

Threads fairness:
    events (avg/stddev):           104857600.0000/0.00
    execution time (avg/stddev):   16.1512/0.00

In principio, res iam clara est, sed melius est ut pluries expertus sit currere, removere manes et fere eventus, ideo non magis probat adhuc.

Inventiones

Quamquam huiusmodi continentia circiter quinque ad decem tempora longiora surgunt (tempus typice currunt cum mandatis similibus cum utendo continenti minus quam tertiae partis secundae), tamen satis cito laborant si tempus absolutum sumamus (ibi. sunt exempla supra, mandata in mediocris trium secundarum faciendarum). Bene, eventus celeris experimenti CPU et RAM eosdem fere eventus ostendunt, qui non possunt non gaudere, praesertim lumine facto quod solitudo praebetur utendo tam bene currendi mechanismo sicut kvm.

nuntius

Articulus est review, sed dat occasionem ut runtime sentiendi. Multis locis applicationis non operta sunt, exempli gratia, situs describit facultatem Kubernetes super Kata Continentes currere. Accedit, etiam series testium currere potes ad difficultates securitatis inveniendas, restrictiones et alia iucunda.

Quaero omnes, qui hic legerunt et revolvunt, ut percontationi intersint, unde futurae publicationes de hoc argumento pendent.

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