å€ãã®äººã¯ãã¢ããªã±ãŒã·ã§ã³ã (Helm ã䜿çšãããæåã§) Kubernetes ã«ç§»è¡ããã°ååã§ãããæºè¶³ã§ãããšä¿¡ããŠããŸãã ããããããã¯ããã»ã©åçŽã§ã¯ãããŸããã
ããŒã
ã¹ããã XNUMX: ãããã®ãªã¯ãšã¹ããšå¶éãèšå®ãã
ããããå®è¡ãããã¯ãªãŒã³ãªç°å¢ãã»ããã¢ããããããšããå§ããŸãããã Kubernetes ã¯ããããã®ã¹ã±ãžã¥ãŒã«èšå®ãšé害ç¶æ ã®åŠçã«ãããŠåªããä»äºãããŸãã ããããã¹ã±ãžã¥ãŒã©ãæ£åžžã«åäœããããã«å¿ èŠãªãªãœãŒã¹ã®æ°ãèŠç©ããã®ãé£ããå Žåãã¹ã±ãžã¥ãŒã©ã¯ããããé 眮ã§ããªãå Žåãããããšãå€æããŸããã ããã§ããªãœãŒã¹ãšå¶éã®ãªã¯ãšã¹ããçºçããŸãã ãªã¯ãšã¹ããšå¶éãèšå®ããããã®æè¯ã®ã¢ãããŒãã«ã€ããŠã¯å€ãã®è°è«ããããŸãã æã ãããã¯ç§åŠãšãããããèžè¡ã§ãããšæ¬åœã«æããããšããããŸãã ãããç§ãã¡ã®ã¢ãããŒãã§ãã
ããããªã¯ãšã¹ã - ããã¯ãããããæé©ã«é 眮ããããã«ã¹ã±ãžã¥ãŒã©ã«ãã£ãŠäœ¿çšãããäž»ãªå€ã§ãã
ã®
Kubernetes ããã¥ã¡ã³ã : ãã£ã«ã¿ãªã³ã° ã¹ãããã«ãããããããã¹ã±ãžã¥ãŒã«ã§ããããŒãã®ã»ããã決å®ãããŸãã ããšãã°ãPodFitsResources ãã£ã«ã¿ãŒã¯ããããã®ç¹å®ã®ãªãœãŒã¹èŠæ±ãæºããã®ã«ååãªãªãœãŒã¹ãããŒãã«ãããã©ããããã§ãã¯ããŸãã
ãªãœãŒã¹ã®æ°ãèŠç©ããããã«ã¢ããªã±ãŒã·ã§ã³ ãªã¯ãšã¹ãã䜿çšããŸãã å®ã¯ ã¢ããªã±ãŒã·ã§ã³ãé©åã«åäœããã«ã¯ããããå¿ èŠã§ãã ãã®ããã«ããŠãã¹ã±ãžã¥ãŒã©ã¯ããŒããçŸå®çã«é 眮ã§ããŸãã åœåãåãããã«ååãªæ°ã®ãªãœãŒã¹ã確ä¿ãããããã«ãäœè£ãæã£ãŠãªã¯ãšã¹ããèšå®ããããšèããŠããŸããããã¹ã±ãžã¥ãŒãªã³ã°æéãå€§å¹ ã«å¢å ããäžéšã®ãããã¯ãªãœãŒã¹ ãªã¯ãšã¹ããåä¿¡ããŠââããªããã®ããã«å®å šã«ã¹ã±ãžã¥ãŒã«ãããŠããªãããšã«æ°ä»ããŸããã
ãã®å Žåãã¹ã±ãžã¥ãŒã©ã¯ããããããã·ã¥ã¢ãŠãããŠåã¹ã±ãžã¥ãŒã«ã§ããªãããšããããããŸãããããã¯ãã³ã³ãããŒã« ãã¬ãŒã³ããã¢ããªã±ãŒã·ã§ã³ãå¿ èŠãšãããªãœãŒã¹ã®æ° (ã¹ã±ãžã¥ãŒãªã³ã° ã¢ã«ãŽãªãºã ã®éèŠãªã³ã³ããŒãã³ã) ãåãããªãããã§ãã
ãããã®å¶é - ããã¯ãããã®ããæ確ãªå¶éã§ãã ããã¯ãã¯ã©ã¹ã¿ãŒãã³ã³ãããŒã«å²ãåœãŠããªãœãŒã¹ã®æ倧éãè¡šããŸãã
ãŸãããŠãããã
å ¬åŒããã¥ã¡ã³ã 泚: ã³ã³ãããŒã« 4 GiB ã®ã¡ã¢ãªãŒå¶éãèšå®ãããŠããå Žåãkubelet (ããã³ã³ã³ãã㌠ã©ã³ã¿ã€ã ) ã¯ããã匷å¶ããŸãã ã©ã³ã¿ã€ã ã§ã¯ãã³ã³ãããŒãæå®ããããªãœãŒã¹å¶éãè¶ ããŠäœ¿çšããããšã¯èš±å¯ãããŸããã ããšãã°ãã³ã³ããå ã®ããã»ã¹ã蚱容éãè¶ ããã¡ã¢ãªã䜿çšããããšãããšãã·ã¹ãã ã«ãŒãã«ã¯ãã¡ã¢ãªäžè¶³ã(OOM) ãšã©ãŒã§ããã»ã¹ãçµäºããŸãã
ã³ã³ãããŒã¯åžžã«ããªãœãŒã¹èŠæ±ã§æå®ããããªãœãŒã¹ãè¶ ãããªãœãŒã¹ã䜿çšã§ããŸãããå¶éã§æå®ããããªãœãŒã¹ãè¶ ããããšã¯ã§ããŸããã ãã®å€ãæ£ããèšå®ããã®ã¯å°é£ã§ãããéåžžã«éèŠã§ãã
çæ³çã«ã¯ãã·ã¹ãã å ã®ä»ã®ããã»ã¹ã«å¹²æžããããšãªããããã»ã¹ã®ã©ã€ããµã€ã¯ã«å šäœã«ããã£ãŠãããã®ãªãœãŒã¹èŠä»¶ãå€åããããšãæãŸããŸãããããå¶éãèšå®ããç®çã§ãã
æ®å¿µãªãããã©ã®ãããªå€ãèšå®ãããã«ã€ããŠå ·äœçãªæ瀺ãäžããããšã¯ã§ããŸããããç§ãã¡èªèº«ã¯æ¬¡ã®ã«ãŒã«ãéµå®ããŠããŸãã
- è² è·ãã¹ã ããŒã«ã䜿çšããŠãããŒã¹ã©ã€ã³ ã¬ãã«ã®ãã©ãã£ãã¯ãã·ãã¥ã¬ãŒãããããã ãªãœãŒã¹ (ã¡ã¢ãªãšããã»ããµ) ã®äœ¿çšç¶æ³ãç£èŠããŸãã
- ããã ãªã¯ãšã¹ããä»»æã®äœãå€ (ãªã¯ãšã¹ãã®å€ã®çŽ 5 åã®ãªãœãŒã¹å¶é) ã«èšå®ããŠèŠ³å¯ããŸãã ãªã¯ãšã¹ããå°ãªããããšããã»ã¹ãéå§ã§ãããè¬ã® Go ã©ã³ã¿ã€ã ãšã©ãŒãçºçããããšããããããŸãã
ãããã«ã¯ååãªãªãœãŒã¹ãå©çšå¯èœãªã¿ãŒã²ãã ããŒããå¿ èŠã§ããããããªãœãŒã¹å¶éãé«ããªããšã¹ã±ãžã¥ãŒãªã³ã°ãããå°é£ã«ãªãããšã«æ³šæããŠãã ããã
éåžžã«é«ããªãœãŒã¹å¶é (ããšãã° 4 GB ã®ã¡ã¢ãª) ãæã€è»œéã® Web ãµãŒããŒãããç¶æ³ãæ³åããŠãã ããã ãã®ããã»ã¹ã¯ããããæ°Žå¹³æ¹åã«æ¡åŒµããå¿ èŠããããåæ°ããã¢ãžã¥ãŒã«ã¯å°ãªããšã 4 GB ã®å©çšå¯èœãªã¡ã¢ãªãåããããŒãäžã§ã¹ã±ãžã¥ãŒã«ããå¿ èŠããããŸãã ãã®ãããªããŒããååšããªãå Žåãã¯ã©ã¹ã¿ãŒã¯ãã®ããããåŠçããããã«æ°ããããŒããå°å ¥ããå¿ èŠããããããã«ã¯æéããããå ŽåããããŸãã é«éãã€ã¹ã ãŒãºãªã¹ã±ãŒãªã³ã°ãå®çŸããã«ã¯ããªãœãŒã¹ã®ãªã¯ãšã¹ããšå¶éã®å·®ãæå°éã«æããããšãéèŠã§ãã
ã¹ããã XNUMX: Liveness ãã¹ããš Readiness ãã¹ããèšå®ãã
ããã¯ãKubernetes ã³ãã¥ããã£ã§ããè°è«ããããã XNUMX ã€ã®åŸ®åŠãªãããã¯ã§ãã Liveness ãã¹ããš Readiness ãã¹ãã¯ãœãããŠã§ã¢ãã¹ã ãŒãºã«å®è¡ããããŠã³ã¿ã€ã ãæå°éã«æããããã®ã¡ã«ããºã ãæäŸããããããããã®ãã¹ãã«ã€ããŠããç解ããããšãéèŠã§ãã ãã ããæ£ããæ§æãããŠããªãå Žåãã¢ããªã±ãŒã·ã§ã³ã®ããã©ãŒãã³ã¹ã«é倧ãªåœ±é¿ãäžããå¯èœæ§ããããŸãã 以äžã«ãäž¡æ¹ã®ãµã³ãã«ã®æŠèŠã瀺ããŸãã
æŽ»æ° ã³ã³ãããå®è¡ãããŠãããã©ããã瀺ããŸãã 倱æããå Žåãkubelet ã¯ã³ã³ãããŒã匷å¶çµäºããåèµ·åããªã·ãŒãæå¹ã«ãªããŸãã ã³ã³ãããŒã« Liveness ãããŒããè£
åãããŠããªãå Žåãããã©ã«ãã®ç¶æ
ã¯æåã«ãªããŸããããã¯ã次ã®ãšããã§ãã
Liveness ãããŒãã¯å®äŸ¡ã§ããå¿ èŠããããŸããã€ãŸããé »ç¹ã«å®è¡ãããã¢ããªã±ãŒã·ã§ã³ãå®è¡äžã§ããããšã Kubernetes ã«éç¥ããå¿ èŠãããããã倧éã®ãªãœãŒã¹ãæ¶è²»ãã¹ãã§ã¯ãããŸããã
ãªãã·ã§ã³ãæ¯ç§å®è¡ããããã«èšå®ãããšã1 ç§ããã XNUMX ã€ã®ãªã¯ãšã¹ããè¿œå ãããããããã®ãã©ãã£ãã¯ãåŠçããã«ã¯è¿œå ã®ãªãœãŒã¹ãå¿ èŠã«ãªãããšã«æ³šæããŠãã ããã
åœç€Ÿã§ã¯ãããŒã¿ (ãªã¢ãŒã ããŒã¿ããŒã¹ããã£ãã·ã¥ãªã©) ã«å®å šã«ã¢ã¯ã»ã¹ã§ããªãå Žåã§ããLiveness ãã¹ãã§ã¢ããªã±ãŒã·ã§ã³ã®ã³ã¢ ã³ã³ããŒãã³ãããã§ãã¯ããŸãã
åçŽã«å¿çã³ãŒã 200 ãè¿ãããã«ã¹ããšã³ããã€ã³ãã䜿çšããŠã¢ããªãæ§æããŸãããããã¯ãããã»ã¹ãå®è¡äžã§ããããªã¯ãšã¹ã (ãã ããã©ãã£ãã¯ã¯ãŸã ) ãåŠçã§ããããšã瀺ããŸãã
ãµã³ãã« æºå ã³ã³ããããªã¯ãšã¹ããåŠçããæºåãã§ããŠãããã©ããã瀺ããŸãã readiness ãããŒãã倱æããå Žåããšã³ããã€ã³ã ã³ã³ãããŒã©ãŒã¯ããããã«å¯Ÿå¿ãããã¹ãŠã®ãµãŒãã¹ã®ãšã³ããã€ã³ããããããã® IP ã¢ãã¬ã¹ãåé€ããŸãã ãã㯠Kubernetes ã®ããã¥ã¡ã³ãã«ãèšèŒãããŠããŸãã
Readiness ãããŒãã¯ãã¢ããªã±ãŒã·ã§ã³ãèŠæ±ãåãå ¥ããæºåãã§ããŠããããšã瀺ãæ¹æ³ã§ããã¯ãšã³ãã«éä¿¡ããå¿ èŠããããããããå€ãã®ãªãœãŒã¹ãæ¶è²»ããŸãã
ã³ãã¥ããã£ã§ã¯ãããŒã¿ããŒã¹ã«çŽæ¥ã¢ã¯ã»ã¹ãããã©ããã«ã€ããŠå€ãã®è°è«ãè¡ãããŠããŸãã ãªãŒããŒããã (ãã§ãã¯ã¯é »ç¹ã«å®è¡ãããŸããã調æŽã¯å¯èœã§ã) ãèæ ®ããŠãäžéšã®ã¢ããªã±ãŒã·ã§ã³ã§ã¯ãããŒã¿ããŒã¹ããã¬ã³ãŒããè¿ãããããšã確èªããåŸã«ã®ã¿ããã©ãã£ãã¯ãåŠçããæºåãã§ããŠãããã©ãããã«ãŠã³ãããããšå€æããŸããã é©åã«èšèšãããæºåãã©ã€ã¢ã«ã«ãããããé«ãã¬ãã«ã®å¯çšæ§ãä¿èšŒãããå±éäžã®ããŠã³ã¿ã€ã ãæé€ãããŸããã
ã¢ããªã±ãŒã·ã§ã³ã®æºåç¶æ³ããã¹ãããããã«ããŒã¿ããŒã¹ã«ã¯ãšãªãå®è¡ããå Žåã¯ãã§ããã ãå®äŸ¡ã§ããããšã確èªããŠãã ããã ãã®ãªã¯ãšã¹ããåãå ¥ããŠã¿ãŸããã:
SELECT small_item FROM table LIMIT 1
Kubernetes ã§ããã XNUMX ã€ã®å€ãæ§æããæ¹æ³ã®äŸã次ã«ç€ºããŸãã
livenessProbe:
httpGet:
path: /api/liveness
port: http
readinessProbe:
httpGet:
path: /api/readiness
port: http periodSeconds: 2
ããã€ãã®è¿œå ã®æ§æãªãã·ã§ã³ãè¿œå ã§ããŸãã
initialDelaySeconds
â ã³ã³ããã®èµ·åãããµã³ãã«ã®éå§ãŸã§ã«ãããç§æ°ãperiodSeconds
â ãµã³ãã«å®è¡éã®åŸ æ©ééãtimeoutSeconds
â ãŠããããç·æ¥ç¶æ ã§ãããšã¿ãªããããŸã§ã®ç§æ°ã éåžžã®ã¿ã€ã ã¢ãŠããfailureThreshold
â åèµ·åä¿¡å·ããããã«éä¿¡ããããŸã§ã®ãã¹ã倱æã®æ°ãsuccessThreshold
â ããããæºåå®äºç¶æ ã«ãªããŸã§ã®æåãããããŒãã®æ° (倱æåŸããããã®éå§æãŸãã¯å埩æ)ã
ã¹ããã XNUMX: ãããã®ããã©ã«ãã®ãããã¯ãŒã¯ ããªã·ãŒãèšå®ãã
Kubernetes ã¯ããã©ããããããã¯ãŒã¯ ããã°ã©ãã£ãŒãåããŠãããããã©ã«ãã§ã¯ããã¹ãŠã®ããããçžäºã«çŽæ¥éä¿¡ããŸãã å Žåã«ãã£ãŠã¯ãããã¯æãŸãããªãããšããããŸãã
æœåšçãªã»ãã¥ãªãã£åé¡ã¯ãæ»æè ãåäžã®è匱ãªã¢ããªã±ãŒã·ã§ã³ã䜿çšããŠããããã¯ãŒã¯äžã®ãã¹ãŠã®ãããã«ãã©ãã£ãã¯ãéä¿¡ããå¯èœæ§ãããããšã§ãã å€ãã®ã»ãã¥ãªãã£åéãšåæ§ã«ãããã§ãæå°ç¹æš©ã®ååãé©çšãããŸãã çæ³çã«ã¯ããããã¯ãŒã¯ ããªã·ãŒã§ã¯ããããéã®ã©ã®æ¥ç¶ãèš±å¯ãããã©ã®æ¥ç¶ãèš±å¯ãããªãããæ瀺çã«æå®ããå¿ èŠããããŸãã
ããšãã°ã次ã®åçŽãªããªã·ãŒã¯ãç¹å®ã®åå空éãžã®ãã¹ãŠã®åä¿¡ãã©ãã£ãã¯ãæåŠããŸãã
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: default-deny-ingress
spec:
podSelector: {}
policyTypes:
- Ingress
ãã®æ§æã®èŠèŠå:
(https://miro.medium.com/max/875/1*-eiVw43azgzYzyN1th7cZg.gif)
詳现
ã¹ããã XNUMX: ããã¯ãš init ã³ã³ããã䜿çšããã«ã¹ã¿ã åäœ
ç§ãã¡ã®äž»ãªç®æšã® XNUMX ã€ã¯ãéçºè ã«ããŠã³ã¿ã€ã ãªã㧠Kubernetes ãžã®ãããã€ã¡ã³ããæäŸããããšã§ããã ã¢ããªã±ãŒã·ã§ã³ãã·ã£ããããŠã³ããŠãã¢ããªã±ãŒã·ã§ã³ã䜿çšããŠãããªãœãŒã¹ã解æŸããã«ã¯å€ãã®ãªãã·ã§ã³ããããããããã¯å°é£ã§ãã
ç¹ã«åé¡ãçããã®ã¯ã
ãªã³ã©ã€ã³ã§åºç¯ãªèª¿æ»ãè¡ã£ãçµæãKubernetes 㯠Nginx æ¥ç¶ãæ¯æžãããŸã§åŸ ããã«ããããçµäºããããšãããããŸããã åæ¢åããã¯ã䜿çšããŠã次ã®æ©èœãå®è£ ããããŠã³ã¿ã€ã ãå®å šã«æé€ããŸããã
lifecycle:
preStop:
exec:
command: ["/usr/local/bin/nginx-killer.sh"]
ããã nginx-killer.sh
:
#!/bin/bash
sleep 3
PID=$(cat /run/nginx.pid)
nginx -s quit
while [ -d /proc/$PID ]; do
echo "Waiting while shutting down nginx..."
sleep 10
done
ãã XNUMX ã€ã®éåžžã«äŸ¿å©ãªãã©ãã€ã ã¯ãinit ã³ã³ããã䜿çšããŠç¹å®ã®ã¢ããªã±ãŒã·ã§ã³ã®èµ·åãåŠçããããšã§ãã ããã¯ãã¢ããªã±ãŒã·ã§ã³ã®èµ·ååã«å®è¡ããå¿ èŠãããããªãœãŒã¹ã倧éã«æ¶è²»ããããŒã¿ããŒã¹ç§»è¡ããã»ã¹ãããå Žåã«ç¹ã«äŸ¿å©ã§ãã ã¡ã€ã³ ã¢ããªã±ãŒã·ã§ã³ã«ãã®ãããªå¶éãèšå®ããã«ããã®ããã»ã¹ã«å¯ŸããŠããé«ããªãœãŒã¹å¶éãæå®ããããšãã§ããŸãã
ãã XNUMX ã€ã®äžè¬çãªã¹ããŒã ã¯ãã¡ã€ã³ ã¢ãžã¥ãŒã«ã«è³æ Œæ å ±ãæäŸãã init ã³ã³ããå ã®ã·ãŒã¯ã¬ããã«ã¢ã¯ã»ã¹ããããšã§ããããã«ãããã¡ã€ã³ ã¢ããªã±ãŒã·ã§ã³ ã¢ãžã¥ãŒã«èªäœããã·ãŒã¯ã¬ãããžã®äžæ£ã¢ã¯ã»ã¹ãé²æ¢ãããŸãã
ãã€ãã®ããã«ããã¥ã¡ã³ãããåŒçšããŸã: Init ã³ã³ãããŒã¯ãã¢ããªã±ãŒã·ã§ã³ ã³ã³ãã㌠ã€ã¡ãŒãžã®ã»ãã¥ãªãã£ãäœäžãããã«ã¹ã¿ã ã³ãŒãããŠãŒãã£ãªãã£ãå®å šã«å®è¡ããŸãã äžèŠãªããŒã«ãåé¢ããŠããããšã§ãã¢ããªã±ãŒã·ã§ã³ ã³ã³ãã ã€ã¡ãŒãžã®æ»æ察象é åãå¶éã§ããŸãã
ã¹ããã XNUMX: ã«ãŒãã«ã®æ§æ
æåŸã«ãããé«åºŠãªãã¯ããã¯ã«ã€ããŠè©±ããŸãããã
Kubernetes ã¯éåžžã«æè»ãªãã©ãããã©ãŒã ã§ãããå¿ èŠã«å¿ããŠã¯ãŒã¯ããŒããå®è¡ã§ããŸãã åœç€Ÿã«ã¯ãéåžžã«ãªãœãŒã¹ã倧éã«æ¶è²»ããé«æ§èœã¢ããªã±ãŒã·ã§ã³ãå€æ°ãããŸãã 倧èŠæš¡ãªè² è·ãã¹ããå®æœããçµæãKubernetes ã®ããã©ã«ãèšå®ãæå¹ãªå ŽåãXNUMX ã€ã®ã¢ããªã±ãŒã·ã§ã³ãäºæ³ããããã©ãã£ãã¯è² è·ã®åŠçã«èŠåŽããŠããããšãããããŸããã
ãã ããKubernetes ã§ã¯ãç¹å®ã®ãããã®ã«ãŒãã« ãã©ã¡ãŒã¿ãŒã®ã¿ãå€æŽããç¹æš©ã³ã³ãããŒãå®è¡ã§ããŸãã éããŠããæ¥ç¶ã®æ倧æ°ãå€æŽããããã«äœ¿çšãããã®ã¯æ¬¡ã®ãšããã§ãã
initContainers:
- name: sysctl
image: alpine:3.10
securityContext:
privileged: true
command: ['sh', '-c', "sysctl -w net.core.somaxconn=32768"]
ããã¯ããé«åºŠãªãã¯ããã¯ã§ãããå€ãã®å Žåå¿
èŠãããŸããã ãã ããã¢ããªã±ãŒã·ã§ã³ãé«è² è·ã«å¯ŸåŠããã®ã«èŠåŽããŠããå Žåã¯ããããã®èšå®ã®äžéšã調æŽããŠã¿ãããšãã§ããŸãã ãã®ããã»ã¹ãšããŸããŸãªå€ã®èšå®ã®è©³çŽ° - ãã€ãã®ããã«
çµè«
Kubernetes ã¯ããã«äœ¿ããæ¢è£œã®ãœãªã¥ãŒã·ã§ã³ã®ããã«èŠãããããããŸããããã¢ããªã±ãŒã·ã§ã³ãã¹ã ãŒãºã«å®è¡ãç¶ããããã«å®è¡ããå¿ èŠãããéèŠãªæé ãããã€ããããŸãã
Kubernetes ã®ç§»è¡å šäœãéããŠããè² è·ãã¹ã ãµã€ã¯ã«ãã«åŸãããšãéèŠã§ããã€ãŸããã¢ããªã±ãŒã·ã§ã³ãèµ·åããè² è·ãã¹ããè¡ããã¡ããªã¯ã¹ãšã¹ã±ãŒãªã³ã°åäœã芳å¯ãããã®ããŒã¿ã«åºã¥ããŠæ§æã調æŽãããã®ãµã€ã¯ã«ãå床繰ãè¿ããŸãã
äºæ³ããããã©ãã£ãã¯ã«ã€ããŠçŸå®çã«ãªãããããè¶ ããŠããã·ã¥ããŠãã©ã®ã³ã³ããŒãã³ããæåã«å£ãããã確èªããŠãã ããã ãã®å埩çãªã¢ãããŒãã§ã¯ããªã¹ããããæšå¥šäºé ã®ããã€ãã ãã§æåãéæã§ããå¯èœæ§ããããŸãã ãããã¯ãããæ·±ãã«ã¹ã¿ãã€ãºãå¿ èŠã«ãªãå ŽåããããŸãã
åžžã«æ¬¡ã®è³ªåãèªåèªèº«ã«åããããŠãã ããã
- ã¢ããªã±ãŒã·ã§ã³ã¯ã©ããããã®ãªãœãŒã¹ãæ¶è²»ããŸãã?ãã®éã¯ã©ã®ããã«å€åããŸãã?
- å®éã®ã¹ã±ãŒãªã³ã°èŠä»¶ã¯äœã§ãã? ã¢ããªã¯å¹³åããŠã©ã®ãããã®ãã©ãã£ãã¯ãåŠçããŸãã? ããŒã¯æã®ãã©ãã£ãã¯ã¯ã©ããªãã§ãããã?
- ãµãŒãã¹ãæ°Žå¹³æ¹åã«æ¡åŒµããå¿ èŠãããé »åºŠã¯ã©ããããã§ãã? ãã©ãã£ãã¯ãåä¿¡ããã«ã¯ãæ°ããããããã©ããããæ©ããªã³ã©ã€ã³ã«ããå¿ èŠããããŸãã?
- ãããã¯ã©ã®çšåºŠæ£ç¢ºã«ã·ã£ããããŠã³ãããŸãã? ããããããã¯å¿ èŠãªã®ã§ããããïŒ ããŠã³ã¿ã€ã ãªãã§å°å ¥ãéæããããšã¯å¯èœã§ãã?
- ã»ãã¥ãªã㣠ãªã¹ã¯ãæå°éã«æãã䟵害ããããããã«ãã被害ãå¶éããã«ã¯ã©ãããã°ããã§ãããã? å¿ èŠã®ãªãæš©éãã¢ã¯ã»ã¹æš©ãæã£ãŠãããµãŒãã¹ã¯ãããŸãã?
Kubernetes ã¯ãã¯ã©ã¹ã¿ãŒå ã«äœåãã®ãµãŒãã¹ããããã€ããããã®ãã¹ã ãã©ã¯ãã£ã¹ã掻çšã§ããçŽ æŽããããã©ãããã©ãŒã ãæäŸããŸãã ãã ããã¢ããªã±ãŒã·ã§ã³ããšã«ç°ãªããŸãã å®è£ ã«ã¯ããå°ãäœæ¥ãå¿ èŠã«ãªãå ŽåããããŸãã
幞ããªããšã«ãKubernetes ã¯ããã¹ãŠã®æè¡çç®æšãéæããããã«å¿ èŠãªæ§æãæäŸããŸãã ãªãœãŒã¹ã®ãªã¯ãšã¹ããšå¶éãLiveness ããã³ Readiness ãããŒããinit ã³ã³ãããŒããããã¯ãŒã¯ ããªã·ãŒãã«ã¹ã¿ã ã«ãŒãã« ãã¥ãŒãã³ã°ãçµã¿åãããŠäœ¿çšââããããšã§ããã©ãŒã«ã ãã¬ã©ã³ã¹ãšè¿ éãªã¹ã±ãŒã©ããªãã£ãšãšãã«é«ãããã©ãŒãã³ã¹ãå®çŸã§ããŸãã
ä»ã«èªãã¹ãããšïŒ
å®çšŒåç°å¢ã§ã³ã³ãããŒãš Kubernetes ãå®è¡ããããã®ãã¹ã ãã©ã¯ãã£ã¹ãšãã¹ã ãã©ã¯ãã£ã¹ .Kubernetes çšã® 90 以äžã®äŸ¿å©ãªããŒã«: ãããã€ã¡ã³ãã管çãã¢ãã¿ãªã³ã°ãã»ãã¥ãªãã£ãªã© .Telegram ã® Kubernetes ã«é¢ããç§ãã¡ã®ãã£ã³ãã« .
åºæïŒ habr.com