Docker涔媠warm閮ㄧ讲闆嗙兢
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鏍囩锛?a href='http://www.mamicode.com/so/1/%e5%8a%a0%e5%85%a5%e9%9b%86%e7%be%a4' title='鍔犲叆闆嗙兢'>鍔犲叆闆嗙兢
鏂规硶 浠诲姟 service 绯荤粺 dockerd 涓嬭浇 emc 蹇呴』 涓€銆佸熀鏈蹇?/h1>锛堜竴锛夈€乨ocker-swarm鏄В鍐冲涓绘満澶氫釜瀹瑰櫒璋冨害閮ㄧ讲寰楅棶棰樸€?/strong> 锛堜簩锛夈€丏ocker swarm涓湁涓夌瑙掕壊锛?/strong> 锛堜笁锛夈€丼warm鍛戒护琛岃鏄? 1锛夊垵濮嬪寲swarm闆嗙兢 2锛夈€侀厤缃畁ode02銆乶ode03鍔犲叆swarm缇ら泦 浠ヤ笂鍛戒护鍙互灏嗘煇涓€涓妭鐐瑰姞鍏ャ€佸垹闄ょ兢闆嗐€?/p>
涓嶈繃鍔犲叆鏃舵槸浣跨敤worker韬唤鐨勶紝濡傛灉鎯宠璁╄妭鐐规槸浠anager韬唤鍔犲叆缇ら泦锛岄渶瑕佷娇鐢ㄤ互涓嬪懡浠わ細 铏界劧鍔犲叆缇ら泦鏃讹紝鍙互鎸囧畾浣跨敤manager銆亀orker韬唤锛屼絾鏄篃鍙互閫氳繃浠ヤ笅鍛戒护锛岃繘琛岄檷绾с€佸崌绾э紝鎿嶄綔濡備笅锛?/p>
閫氳繃娴忚鍣ㄨ闂獙璇侊細 node01鍙戝竷涓€涓换鍔★紝锛堝繀椤诲湪manager瑙掕壊鐨勪富鏈轰笂锛夎繍琛屽叚涓鍣紝鍛戒护濡備笅锛?/strong> 閫氳繃娴忚鍣ㄨ闂獙璇侊細 濡傛灉鐜板湪node02銆乶ode03鍙戠敓瀹曟満鏃讹紝service骞朵笉浼氬洜涓鸿妭鐐圭殑瀹曟満鑰屾鎺夛紝鑰屾槸鑷姩璺戝埌姝e父鐨勮妭鐐逛笂銆?/p>
妯℃嫙node02瀹曟満锛寃eb椤甸潰濡備笅锛?/strong> 鎵╁锛氬氨鏄坊鍔犲嚑鍙皊ervice锛?br/>鏀剁缉锛氬氨鏄噺灏戝嚑鍙皊ervice锛?/p>
閽堝涓婅堪鐜瀹炵幇鏀剁缉銆佹墿瀹癸紱 锛?锛塻ervice鎵╁ 娴忚鍣ㄩ獙璇侊細 閫氳繃鎼缓registry绉佹湁浠撳簱锛屽彲浠ヤ究浜庤鍏朵粬node涓嬭浇闀滃儚銆?/strong> 锛?锛夊噯澶囩幆澧?/strong> 娴忚鍣ㄨ闂祴璇曪細 娉細涓変釜service鍓湰鏄疆璇㈢殑鏂瑰紡鏉ユ湇鍔$殑 浠庢洿鏂扮殑杩囩▼涓彲浠ョ湅鍑烘晥鏋滐紒 娴忚鍣ㄧ‘璁ょ増鏈洿鏂版垚鍔燂細
Swarm鏄疍ocker 寮曟搸鍐呯疆锛堝師鐢燂級鐨勯泦缇ょ鐞嗗拰缂栨帓宸ュ叿銆侱ocker Swarm鏄?Docker 瀹樻柟涓夊墤瀹㈤」鐩箣涓€锛宻warm鏄熀浜巇ocker骞冲彴瀹炵幇鐨勯泦缇ゆ妧鏈紝浠栧彲浠ラ€氳繃鍑犳潯绠€鍗曠殑鎸囦护蹇€熺殑鍒涘缓涓€涓猟ocker闆嗙兢锛屾帴鐫€鍦ㄩ泦缇ょ殑鍏变韩缃戠粶涓婇儴缃插簲鐢紝鏈€缁堝疄鐜板垎甯冨紡鐨勬湇鍔°€?/p>
娉細
Swarm: 浣滅敤杩愯docker engin(寮曟搸)鐨勫涓富鏈虹粍鎴愮殑闆嗙兢銆?node: 姣忎竴涓猟ocker engin閮芥槸涓€涓猲ode锛堣妭鐐癸級锛屽垎涓?manager 鍜寃orker銆?/code>
docker swarm锛氶泦缇ょ鐞?init #鍒濆鍖栭泦缇?join #灏嗚妭鐐瑰姞鍏ラ泦缇?join-token #绠$悊鍔犲叆浠ょ墝
leave #浠庨泦缇や腑鍒犻櫎鏌愪釜鑺傜偣锛屽己鍒跺垹闄ゅ姞鍙傛暟--force
update #鏇存柊闆嗙兢
unlock #瑙i攣闆嗙兢
docker node锛氳妭鐐圭鐞嗭紝
demote #灏嗛泦缇や腑涓€涓垨澶氫釜鑺傜偣闄嶇骇
inspect #鏄剧ず涓€涓垨澶氫釜鑺傜偣鐨勮缁嗕俊鎭?ls #鍒楀嚭闆嗙兢涓殑鑺傜偣
promote #灏嗕竴涓垨澶氫釜鑺傜偣鎻愬崌涓虹鐞嗚妭鐐?rm #浠庨泦缇や腑鍒犻櫎鍋滄鐨勮妭鐐癸紝--force寮哄埗鍒犻櫎鍙傛暟
ps #鍒楀嚭涓€涓垨澶氫釜鑺傜偣涓婅繍琛岀殑浠诲姟
update #鏇存柊鑺傜偣
docker service锛氭湇鍔$鐞嗭紝
create #鍒涘缓涓€涓柊鐨勬湇鍔?inspect #鍒楀嚭涓€涓垨澶氫釜鏈嶅姟鐨勮缁嗕俊鎭?ps #鍒楀嚭涓€涓垨澶氫釜鏈嶅姟涓殑浠诲姟淇℃伅
ls #鍒楀嚭鏈嶅姟
rm #鍒犻櫎涓€涓垨澶氫釜鏈嶅姟
scale #鎵╁睍涓€涓垨澶氫釜鏈嶅姟
update #鏇存柊鏈嶅姟
浜屻€佸疄楠岀幆澧?/h1>
绯荤粺鐗堟湰
涓绘満鍚?/th>
IP鍦板潃
centos7.3
node01
192.168.45.129
--------
node02
192.168.45.141
--------
node03
192.168.45.142
娉ㄦ剰浜嬮」锛?* 瀹為獙鐜鍏抽棴闃茬伀澧欍€佺鐢╯elinux銆?* 涓夊彴dockerhost鍖哄埆涓绘満鍚嶃€?* 鏃堕棿瑕佷笌鏈満鍚屾
[root@node01 ~]# docker swarm init --advertise-addr 192.168.45.129
娉細浠ヤ笂鍥剧墖涓懡浠ら噴涔夛細鈶犵殑鍛戒护锛氫互worker韬唤鍔犲叆swarm缇ら泦涓殑鍛戒护锛?鈶$殑鍛戒护锛氫互manager韬唤鍔犲叆swarm缇ら泦涓殑鏂规硶锛?鍑虹幇涓婂浘琛ㄧず鍒濆鍖栨垚鍔燂紒娉ㄦ剰锛?-token琛ㄧず鏈熼檺涓?4灏忔椂锛?/code>
node02鐨勬搷浣滃涓嬶細
[root@node01 ~]# docker swarm join --token SWMTKN-1-3atrf55hv8fzomtrtn6ieou06tvr33tr244ir6lqcn9u78vk9y-68k6gnvppi5y6bwodbwvoh5ih 192.168.45.129:2377
node03鐨勬搷浣滃涓嬶細
[root@node02 ~]# docker swarm join --token SWMTKN-1-3atrf55hv8fzomtrtn6ieou06tvr33tr244ir6lqcn9u78vk9y-68k6gnvppi5y6bwodbwvoh5ih 192.168.45.129:2377
//浠ヤ笂node02銆乶ode03榛樿鏄互worker韬唤鍔犲叆鐨?/code>
[root@node01 ~]# docker node ls
//杩斿洖node1鍙互鐪嬭鍔犲叆闆嗙兢鐨勪富鏈?//鏌ョ湅鑺傜偣璇︾粏淇℃伅锛堝彧鑳芥槸manager韬唤鎵嶅彲鏌ョ湅锛?//鍙互鐪嬪嚭node01銆乶ode02銆乶ode03鐨勭姸鎬佷负Ready
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION
vifca51rieq0zk5caclo8gdmq * node01 Ready Active Leader 18.09.0
3mep2scnlan0we54dve38iy7f node02 Ready Active 18.09.0
1qe5e2z41tnz7f8uoinhilh1r node03 Ready Active 18.09.0
[root@node02 ~]# docker swarm leave
// docker swarm leave 锛氳〃绀虹寮€闆嗙兢浣嗘槸闇€瑕乵anager node鐨勫悓鎰?[root@node03 ~]# docker swarm leave
[root@node01 ~]# docker node ls
//杩欐椂鎴戜滑鍥炲埌node01涓婃煡鐪嬪姞鍏ョ殑涓ゅ彴涓绘満宸茬粡Down鎺変簡锛屼絾鏄敞鎰忎袱鍙颁富鏈鸿櫧鐒禗own鎺変簡浣嗘槸浠荤劧娌℃湁閫€鍑洪泦缇?ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION
vifca51rieq0zk5caclo8gdmq * node01 Ready Active Leader 18.09.0
3mep2scnlan0we54dve38iy7f node02 Down Active 18.09.0
1qe5e2z41tnz7f8uoinhilh1r node03 Down Active 18.09.0
[root@node01 ~]# docker node rm node02
[root@node01 ~]# docker node rm node03
//node01灏唍ode02銆乶ode03绉婚櫎缇ら泦
[root@node01 ~]# docker node ls
//鍙互鐪嬭鍙墿node01浜?ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION
vifca51rieq0zk5caclo8gdmq * node01 Ready Active Leader 18.09.0
[root@node01 ~]# docker swarm leave -f
//manager鑺傜偣閫€鍑簊wamr缇ら泦鐜锛岃繖灏辫〃绀簊warm缇ら泦瑙f暎
[root@node01 ~]# docker swarm join-token manager
//鏌ヨ浠anager韬唤鍔犲叆缇ら泦鐨勫懡浠?[root@node01 ~]# docker swarm join-token worker
//鏌ヨ浠orker韬唤鍔犲叆缇ら泦鐨勫懡浠?/code>
[root@node02 ~]# docker swarm join --token SWMTKN-1-2x99iyt6bc4tsxplphzr681td3r6qikf4xsng5vd3pqxfuu7e4-aax0h9ptqd277uktll4buw6dw 192.168.45.129:2377
[root@node03 ~]# docker swarm join --token SWMTKN-1-2x99iyt6bc4tsxplphzr681td3r6qikf4xsng5vd3pqxfuu7e4-aax0h9ptqd277uktll4buw6dw 192.168.45.129:2377
//浠anager韬唤鍔犲叆闆嗙兢
[root@node01 ~]# docker node ls
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION
l9mvaohxaoeltwade2kv43yhk * node01 Ready Active Leader 18.09.0
9mo0z9ffef4qy7hsz6gmfw5iv node02 Ready Active Reachable 18.09.0
x0ugwmo9rs2kee3986g1dbnbs node03 Ready Active Reachable 18.09.0
//浠嶮ANAGER STATUS杩欏垪灏卞彲鐪嬪嚭锛屾敞鎰忔垜鍙互灏唍ode02鍜宯ode03鍗囦负manager涔熷彲浠ュ啀灏嗗畠浠檷鍥瀢orker
[root@node01 ~]# docker node demote node02
[root@node01 ~]# docker node demote node03
//灏唍ode02銆乶ode03闄嶇骇涓簑orker
[root@node01 ~]# docker node promote node02
[root@node01 ~]# docker node promote node03
//灏唍ode02銆乶ode03鍗囩骇涓簃anager
//鑷楠岃瘉
涓夈€侀儴缃蹭竴涓浘褰㈠寲webUI 鐣岄潰
[root@node01 ~]# docker run -d -p 8080:8080 -e HOST=172.16.0.10 -e PORT=8080 -v /var/run/docker.sock:/var/run/docker.sock --name visualizer dockersamples/visualizer
//濡傛灉璁块棶涓嶅埌缃戦〉锛岄渶寮€鍚矾鐢辫浆鍙?[root@node01 ~]#echo net.ipv4.ip_forward = 1 >> /etc/sysctl.conf
[root@node01 ~]# sysctl -p
鍥涖€乨ocker swarm缇ら泦鐨剆ervice鏈嶅姟閰嶇疆
[root@node01 ~]# docker service create --replicas 6 --name web -p 80:80 nginx
//--replicas: 鎸囧畾鍓湰鏁伴噺鍓湰鎸囩殑涔熷氨鏄鍣ㄣ€?/code>
[root@node01 ~]# docker service ls //鏌ョ湅鍒涘缓鐨剆ervice
ID NAME MODE REPLICAS IMAGE PORTS
wjvpsyhy2igt web replicated 6/6 nginx:latest *:80->80/tcp
[root@node01 ~]# docker service ps web //鏌ョ湅鍒涘缓鐨剆ervice閮借繍琛屽湪閭d簺瀹瑰櫒涓?ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
twhwstaveapg web.1 nginx:latest node03 Running Running 4 minutes ago
xj2ffr7ziyza web.2 nginx:latest node01 Running Running 4 minutes ago
7rjj209wt3bk web.3 nginx:latest node02 Running Running 5 minutes ago
syvhdvk4ci9i web.4 nginx:latest node03 Running Running 4 minutes ago
fmkp3i6276ub web.5 nginx:latest node01 Running Running 4 minutes ago
pn0s1e8qqvmw web.6 nginx:latest node02 Running Running 5 minutes ago
娉細杩欓噷闇€瑕佹敞鎰忎簡濡傛灉鎴戜滑鈥滄墿瀹规垨鏀剁缉鈥濆氨鍙互鍙戠幇鍘熸潵閲嶆柊鍚姩node02浼氫粠鏂板垎閰嶅埌瀹瑰櫒锛岃繖鏄洜涓烘牴鎹甦ocker swarm鑷韩鐨勭畻娉曡繘琛屽垎閰嶇殑锛屽畠浼氭绱綘鐨勫摢涓妭鐐瑰浜庡仴搴风姸鎬佸鏋滄槸鍋ュ悍鐨勫氨浼氶噸鏂扮殑鍒嗛厤浠诲姟锛屽鏋滄槸澶勪簬瀹曟満灏卞涓婂浘鎵€璇淬€?/p>
浜斻€佸疄鐜皊ervice鐨勬墿瀹广€佹敹缂?/h1>
[root@node01 ~]# docker service scale web=8
web scaled to 8
//浠庡師鏈殑鍏彴瀹瑰櫒澧炲姞鍒板叓鍙?/code>
锛?锛塻ervice鏀剁缉
[root@node01 ~]# docker service scale web=4
//浠庡師鏈殑鍏彴鍑忓皯鍒板洓鍙?br/>
锛?strong>3锛夎缃煇涓猲ode涓嶈繍琛宻ervice
鍙互閫氳繃璁剧疆锛屼娇鏌愬彴鑺傜偣涓嶈繍琛宻ervice锛屽涓嬶細
[root@node01 ~]# docker node update --availability drain node01
//璁剧疆noder01浠ュ悗涓嶈繍琛屽鍣紝浣嗗凡缁忚繍琛岀殑瀹瑰櫒骞朵笉浼氬仠姝?// --availability锛氶€夐」鍚庨潰鍏辨湁涓変釜閫夐」鍙厤缃紝濡備笅锛?active锛氬伐浣滐紱pause锛氭殏鏃朵笉宸ヤ綔锛沝rain锛氭案涔呮€х殑涓嶅伐浣?/code>
[root@node01 ~]# docker node update --availability drain node02
//node02涔熶笉鍙傚姞宸ヤ綔锛屼絾宸茬粡杩愯鐨勫鍣ㄥ苟涓嶄細鍋滄
娉細鐢辨鍙互寰楀嚭锛氫笉鏄彧鏈塵anager鎵嶆湁涓嶅伐浣滅殑鏉冨姏锛?/strong>鍏€佹惌寤簉egistry绉佹湁浠撳簱
鎼缓绉佹湁浠撳簱璇峰弬鑰?a href="https://blog.51cto.com/14306186/2514802">Docker鎼缓绉佹湁浠撳簱涔媟egistry[root@node01 ~]# docker run -itd --name registry -p 5000:5000 -v /registry:/var/lib/registry --restart=always registry:2
[root@node01 ~]# vim /usr/lib/systemd/system/docker.service
//鏇存敼鍐呭涓?ExecStart=/usr/bin/dockerd --insecure-registry 192.168.45.129:5000
[root@node01 ~]# systemctl daemon-reload
[root@node01 ~]# systemctl restart docker
[root@node01 ~]# docker ps -a -q | xargs docker start
//鐢变簬鍒氭墠鍒涘缓鐨勫鍣ㄥ苟娌℃湁璁剧疆鑷姩鍚姩锛屾墍浠ュ湪閲嶅惎docker鏈嶅姟鐨勬椂鍊欙紝闇€瑕佹墜鍔ㄥ惎鍔?/code>
[root@node02 ~]# vim /usr/lib/systemd/system/docker.service
//鏇存敼鍐呭涓?ExecStart=/usr/bin/dockerd --insecure-registry 192.168.45.129:5000
[root@node02 ~]# systemctl daemon-reload
[root@node02 ~]# systemctl restart docker.service
[root@node03 ~]# vim /usr/lib/systemd/system/docker.service
//鏇存敼鍐呭涓?ExecStart=/usr/bin/dockerd --insecure-registry 192.168.45.129:5000
[root@node03 ~]# systemctl daemon-reload
[root@node03 ~]# systemctl restart docker.service
//閲嶆柊鍚姩node02銆乶ode03鑺傜偣鐨刣ocker鏈嶅姟
[root@node01 ~]# docker pull httpd
[root@node01 ~]# docker tag httpd:latest 192.168.1.1:5000/httpd:latest
[root@node01 ~]# docker push 192.168.1.1:5000/httpd:latest
//灏唄ttpd闀滃儚涓婁紶鍒扮鏈変粨搴撲腑
[root@node02 ~]# curl 192.168.45.129:5000/v2/_catalog //鏌ョ湅绉佹湁浠撳簱涓殑闀滃儚
{"repositories":["httpd"]}
[root@node02 ~]#docker pull 192.168.45.129:5000/httpd
//涓嬭浇绉佹湁搴撲腑鐨刪ttpd闀滃儚
涓冦€乻ervice鏈嶅姟鐗堟湰鐨勫崌绾т笌鍥炴粴
[root@node01 ~]# mkdir version{1,2,3,}
[root@node01 ~]# cd version1
[root@node01 version1]# echo "version1" >> index.html
[root@node01 version1]# echo -e "FROM httpd:latest
ADD index.html /usr/local/apache2/htdocs/index.html" > Dockerfile
[root@node01 version1]# docker build -t 192.168.45.129:5000/httpd:v1 .
//version1鐩綍涓嬫ā鎷熺敓鎴愮増鏈瑅1
[root@node01 version1]# cp Dockerfile ../version2
[root@node01 version1]# cd !$
cd ../version2
[root@node01 version2]# echo "version2" >> index.html
[root@node01 version2]# docker build -t 192.168.45.129:5000/httpd:v2 .
//vesion2鐩綍涓嬫ā鎷熺敓鎴愮増鏈瑅2
[root@node01 version2]# cp Dockerfile ../version3
[root@node01 version2]# cd !$
cd ../version3
[root@node01 version3]# echo "version3" >> index.html
[root@node01 version3]# docker build -t 192.168.45.129:5000/httpd:v3 .
//vesion3鐩綍涓嬫ā鎷熺敓鎴愮増鏈瑅3
//娉ㄦ剰鍦ㄤ富椤甸潰鍋氫竴浜涘尯鍒?[root@node01 ~]# docker push 192.168.45.129:5000/httpd:v1
[root@node01 ~]# docker push 192.168.45.129:5000/httpd:v2
[root@node01 ~]# docker push 192.168.45.129:5000/httpd:v3
//灏嗙敓鎴愮殑闀滃儚涓婁紶鍒扮鏈変粨搴?[root@node01 ~]# docker service create --replicas 3 --name httpd 192.168.45.129:5000/httpd:v1
//鍩轰簬192.168.45.129:5000/httpd:v1鍒涘缓涓変釜service鍓湰
锛?锛夌増鏈崌绾?/strong>
榛樿鎯呭喌涓嬶紝swarm涓€娆″彧鏇存柊涓€涓壇鏈紝骞朵笖涓や釜鍓湰涔嬮棿骞舵病鏈夌瓑寰呮椂闂达紝鍙互閫氳繃浠ヤ笂鏂规硶杩涜璁剧疆銆?/p>
[root@node01 ~]# docker service update --replicas 6 --image 192.168.45.129:5000/httpd:v3 --update-parallelism 2 --update-delay 1m httpd
//--update-parallelism锛氳缃洿鏂扮殑鍓湰鏁伴噺锛?//--update-delay锛氭洿鏂扮殑闂撮殧鏃堕棿
// --replicas 6锛氬苟鍦ㄥ崌绾х殑杩囩▼涓彟澶栧啀鍒涘缓3涓壇鏈?/code>
锛?锛夌増鏈洖婊?/strong>[root@node01 ~]# docker service rollback httpd
//鍥炴粴涓轰笂涓€涓増鏈?/code>
娉ㄦ剰锛氬綋鎴戜滑鎵ц鍥炴粴鎿嶄綔鐨勬椂鍊欙紝榛樿鏄洖婊氬埌涓婁竴娆℃搷浣滅殑鐗堟湰锛屽苟涓斾笉鍙互杩炵画鍥炴粴銆?/strong>
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