N'isiokwu a anyị na-eji , , и Anyị ga-ahazi nhazi nke ngwa weebụ enweghị nkebi. bụ usoro na-enye gị ohere imelite ngwa ozugbo na-ajụghị otu arịrịọ. Ọ bụ otu n'ime atụmatụ ntinye oge efu na ọ dabara nke ọma maka ngwa nwere otu ihe atụ, mana ikike ibu ihe atụ nke abụọ, dị njikere ịgba ọsọ dị nso.
Ka anyị kwuo na ị nwere ngwa webụ nke ọtụtụ ndị ahịa na-arụsi ọrụ ike, ọ nweghịkwa ụzọ ọ ga-esi dina ala maka sekọnd ole na ole. Na ị ga-achọrịrị iwepụta mmelite ọbá akwụkwọ, ndozi ahụhụ, ma ọ bụ njiri mara mma ọhụrụ. N'ọnọdụ nkịtị, ị ga-achọ ịkwụsị ngwa ahụ, dochie ya ma malite ya ọzọ. N'ihe banyere docker, ị nwere ike ibu ụzọ dochie ya, wee malitegharịa ya, mana a ka ga-enwe oge na-agaghị ahazi arịrịọ maka ngwa ahụ, n'ihi na ngwa ahụ na-ewekarị oge iji buo ya. Gịnị ma ọ bụrụ na ọ na-amalite, ma tụgharịa na-adịghị arụ ọrụ? Nke a bụ nsogbu, ka anyị dozie ya n'ụzọ dị nta na nke mara mma dị ka o kwere mee.
NKWUKWU: A na-egosi ọtụtụ akụkọ a n'ụdị nnwale - n'ụdị ndekọ nke nnọkọ njikwa. Olileanya na nke a agaghị esi ike nghọta na koodu ahụ ga-edepụta onwe ya nke ọma. Maka ikuku, were ya na ndị a abụghị naanị snippets koodu, kama akwụkwọ sitere na teletype "ígwè".
A na-akọwa usoro na-adọrọ mmasị nke siri ike Google naanị site n'ịgụ koodu ahụ na mmalite nke ngalaba ọ bụla. Ọ bụrụ na ihe ọ bụla ọzọ edoghị anya, google ya wee lelee ya. (Ọ dabara nke ọma, ọ na-arụ ọrụ ọzọ, n'ihi mkpọchi nke telegram). Ọ bụrụ na ịnweghị ike Google ihe ọ bụla, jụọ na nkwupụta. M ga-enwe obi ụtọ ịgbakwunye na ngalaba kwekọrọ "Usoro na-akpali mmasị".
Ka anyi bido.
$ mkdir blue-green-deployment && cd $_ọrụ
Ka anyị rụọ ọrụ nnwale wee tinye ya n'ime akpa.
Usoro na-adọrọ mmasị
cat << EOF > file-name( + ) bụ ụzọ iji mepụta faịlụ ọtụtụ ahịrị na otu iwu. Ihe niile bash na-agụ site na/dev/stdinmgbe ahịrị a na tupu ahịrịEOFa ga-edekọ nafile-name.wget -qO- URL() - wepụta akwụkwọ enwetara site na HTTP gaa/dev/stdout(analoguecurl URL).
Bipụta
Ana m agbaji snippet ahụ kpọmkwem iji mee ka ọ pụta ìhè maka Python. N'ikpeazụ a ga-enwe mpempe ọzọ dị ka nke a. Chee echiche na n'ebe ndị a, a na-egbutu akwụkwọ ahụ ka e zigara ya na ngalaba na-eme ka ọ pụta ìhè (ebe a na-eji aka na-agba koodu ahụ na ihe ndị na-egbuke egbuke), mgbe ahụ, a na-ejikọta ibe ndị a azụ.
$ cat << EOF > uptimer.pyfrom http.server import BaseHTTPRequestHandler, HTTPServer
from time import monotonic
app_version = 1
app_name = f'Uptimer v{app_version}.0'
loading_seconds = 15 - app_version * 5
class Handler(BaseHTTPRequestHandler):
def do_GET(self):
if self.path == '/':
try:
t = monotonic() - server_start
if t < loading_seconds:
self.send_error(503)
else:
self.send_response(200)
self.send_header('Content-Type', 'text/html')
self.end_headers()
response = f'<h2>{app_name} is running for {t:3.1f} seconds.</h2>n'
self.wfile.write(response.encode('utf-8'))
except Exception:
self.send_error(500)
else:
self.send_error(404)
httpd = HTTPServer(('', 8080), Handler)
server_start = monotonic()
print(f'{app_name} (loads in {loading_seconds} sec.) started.')
httpd.serve_forever()EOF
$ cat << EOF > Dockerfile
FROM python:alpine
EXPOSE 8080
COPY uptimer.py app.py
CMD [ "python", "-u", "./app.py" ]
EOF
$ docker build --tag uptimer .
Sending build context to Docker daemon 39.42kB
Step 1/4 : FROM python:alpine
---> 8ecf5a48c789
Step 2/4 : EXPOSE 8080
---> Using cache
---> cf92d174c9d3
Step 3/4 : COPY uptimer.py app.py
---> a7fbb33d6b7e
Step 4/4 : CMD [ "python", "-u", "./app.py" ]
---> Running in 1906b4bd9fdf
Removing intermediate container 1906b4bd9fdf
---> c1655b996fe8
Successfully built c1655b996fe8
Successfully tagged uptimer:latest
$ docker run --rm --detach --name uptimer --publish 8080:8080 uptimer
8f88c944b8bf78974a5727070a94c76aa0b9bb2b3ecf6324b784e782614b2fbf
$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
8f88c944b8bf uptimer "python -u ./app.py" 3 seconds ago Up 5 seconds 0.0.0.0:8080->8080/tcp uptimer
$ docker logs uptimer
Uptimer v1.0 (loads in 10 sec.) started.
$ wget -qSO- http://localhost:8080
HTTP/1.0 503 Service Unavailable
Server: BaseHTTP/0.6 Python/3.8.3
Date: Sat, 22 Aug 2020 19:52:40 GMT
Connection: close
Content-Type: text/html;charset=utf-8
Content-Length: 484
$ wget -qSO- http://localhost:8080
HTTP/1.0 200 OK
Server: BaseHTTP/0.6 Python/3.8.3
Date: Sat, 22 Aug 2020 19:52:45 GMT
Content-Type: text/html
<h2>Uptimer v1.0 is running for 15.4 seconds.</h2>
$ docker rm --force uptimer
uptimertụgharịa proxy
Ka ngwa anyị wee nwee ike ịgbanwe n'amaghị ama, ọ dị mkpa na e nwere ihe ọzọ dị n'ihu ya nke ga-ezochi nnọchi ya. Ọ nwere ike ịbụ sava weebụ в . A na-ehiwe proxy reverse n'etiti onye ahịa na ngwa. Ọ na-anabata arịrịọ sitere n'aka ndị ahịa wee zipu ha na ngwa ma bufee nzaghachi ngwa ahụ nye ndị ahịa.
Enwere ike ijikọ ngwa na ntụgharị proxy n'ime docker iji . Ya mere, akpa ahụ nwere ngwa ahụ adịghịdị mkpa ibugharị ọdụ ụgbọ mmiri na sistemụ nnabata; nke a na-enye ohere ka ngwa ahụ kewapụ nke ọma na egwu mpụga.
Ọ bụrụ na proxy reverse bi na onye ọbịa ọzọ, ị ga-ahapụ netwọọdụ docker wee jikọọ ngwa ahụ na proxy azụ site na netwọkụ ndị ọbịa, na-ebugharị ọdụ ụgbọ mmiri. ngwa ọdịnala oke --publish, dị ka na mmalite mbụ yana dị ka ọ dị na ntụgharị proxy.
Anyị ga-agba ọsọ proxy na ọdụ ụgbọ mmiri 80, n'ihi na nke a bụ kpọmkwem ihe kwesịrị ige ntị na netwọk mpụga. Ọ bụrụ na ọdụ ụgbọ mmiri 80 na-arụ ọrụ n'aka na onye na-anwale ule gị, gbanwee oke --publish 80:80 on --publish ANY_FREE_PORT:80.
Usoro na-adọrọ mmasị
- "N'ime netwọọdụ Docker nke onye ọrụ mebere, ị nwere ike iji akpa akpakọrịta ọ bụghị naanị site na adreesị IP. A na-edozikwa aha akpa ahụ n'ime adreesị IP ya" (, isi 5 nke koodu docker).
Bipụta
$ docker network create web-gateway
5dba128fb3b255b02ac012ded1906b7b4970b728fb7db3dbbeccc9a77a5dd7bd
$ docker run --detach --rm --name uptimer --network web-gateway uptimer
a1105f1b583dead9415e99864718cc807cc1db1c763870f40ea38bc026e2d67f
$ docker run --rm --network web-gateway alpine wget -qO- http://uptimer:8080
<h2>Uptimer v1.0 is running for 11.5 seconds.</h2>
$ docker run --detach --publish 80:80 --network web-gateway --name reverse-proxy nginx:alpine
80695a822c19051260c66bf60605dcb4ea66802c754037704968bc42527bf120
$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
80695a822c19 nginx:alpine "/docker-entrypoint.…" 27 seconds ago Up 25 seconds 0.0.0.0:80->80/tcp reverse-proxy
a1105f1b583d uptimer "python -u ./app.py" About a minute ago Up About a minute 8080/tcp uptimer
$ cat << EOF > uptimer.conf
server {
listen 80;
location / {
proxy_pass http://uptimer:8080;
}
}
EOF
$ docker cp ./uptimer.conf reverse-proxy:/etc/nginx/conf.d/default.conf
$ docker exec reverse-proxy nginx -s reload
2020/06/23 20:51:03 [notice] 31#31: signal process started
$ wget -qSO- http://localhost
HTTP/1.1 200 OK
Server: nginx/1.19.0
Date: Sat, 22 Aug 2020 19:56:24 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
<h2>Uptimer v1.0 is running for 104.1 seconds.</h2>Nbunye enweghị nkebi
Ka anyị wepụta ụdị ngwa ọhụrụ (nke nwere nkwalite arụmọrụ okpukpu abụọ) wee nwaa ibunye ya n'enweghị nsogbu.
Usoro na-adọrọ mmasị
echo 'my text' | docker exec -i my-container sh -c 'cat > /my-file.txt'- Dee ederedemy textịgba akwụkwọ/my-file.txtn'ime akpamy-container.cat > /my-file.txt- Dee ọdịnaya nke ndenye ọkọlọtọ na faịlụ/dev/stdin.
Bipụta
$ sed -i "s/app_version = 1/app_version = 2/" uptimer.py
$ docker build --tag uptimer .
Sending build context to Docker daemon 39.94kB
Step 1/4 : FROM python:alpine
---> 8ecf5a48c789
Step 2/4 : EXPOSE 8080
---> Using cache
---> cf92d174c9d3
Step 3/4 : COPY uptimer.py app.py
---> 3eca6a51cb2d
Step 4/4 : CMD [ "python", "-u", "./app.py" ]
---> Running in 8f13c6d3d9e7
Removing intermediate container 8f13c6d3d9e7
---> 1d56897841ec
Successfully built 1d56897841ec
Successfully tagged uptimer:latest
$ docker run --detach --rm --name uptimer_BLUE --network web-gateway uptimer
96932d4ca97a25b1b42d1b5f0ede993b43f95fac3c064262c5c527e16c119e02
$ docker logs uptimer_BLUE
Uptimer v2.0 (loads in 5 sec.) started.
$ docker run --rm --network web-gateway alpine wget -qO- http://uptimer_BLUE:8080
<h2>Uptimer v2.0 is running for 23.9 seconds.</h2>
$ sed s/uptimer/uptimer_BLUE/ uptimer.conf | docker exec --interactive reverse-proxy sh -c 'cat > /etc/nginx/conf.d/default.conf'
$ docker exec reverse-proxy cat /etc/nginx/conf.d/default.conf
server {
listen 80;
location / {
proxy_pass http://uptimer_BLUE:8080;
}
}
$ docker exec reverse-proxy nginx -s reload
2020/06/25 21:22:23 [notice] 68#68: signal process started
$ wget -qO- http://localhost
<h2>Uptimer v2.0 is running for 63.4 seconds.</h2>
$ docker rm -f uptimer
uptimer
$ wget -qO- http://localhost
<h2>Uptimer v2.0 is running for 84.8 seconds.</h2>
$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
96932d4ca97a uptimer "python -u ./app.py" About a minute ago Up About a minute 8080/tcp uptimer_BLUE
80695a822c19 nginx:alpine "/docker-entrypoint.…" 8 minutes ago Up 8 minutes 0.0.0.0:80->80/tcp reverse-proxyN'oge a, a na-ewu ihe oyiyi ahụ ozugbo na ihe nkesa, nke na-achọ ka isi mmalite ngwa dị ebe ahụ, ma na-ebukwa ihe nkesa na ọrụ na-adịghị mkpa. Nzọụkwụ ọzọ bụ ikenye mgbakọ oyiyi ahụ na igwe dị iche iche (dịka ọmụmaatụ, na usoro CI) wee nyefee ya na ihe nkesa.
Na-ebufe onyonyo
N'ụzọ dị mwute, ọ bụghị ihe ezi uche dị na ịnyefe ihe oyiyi site na localhost gaa na localhost, yabụ enwere ike nyochaa ngalaba a ma ọ bụrụ na ị nwere ndị ọbịa abụọ nwere Docker n'aka. Opekempe ọ dị ka nke a:
$ ssh production-server docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
$ docker image save uptimer | ssh production-server 'docker image load'
Loaded image: uptimer:latest
$ ssh production-server docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
uptimer latest 1d56897841ec 5 minutes ago 78.9MBotu docker save na-echekwa data onyonyo n'ime ebe nchekwa .tar, nke pụtara na ọ tụrụ ihe dịka 1.5 ugboro karịa ka ọ ga-atụ n'ụdị agbakọ. Ya mere, ka anyị maa jijiji n'aha nke ịchekwa oge na okporo ụzọ:
$ docker image save uptimer | gzip | ssh production-server 'zcat | docker image load'
Loaded image: uptimer:latestỊ nwekwara ike nyochaa usoro nbudata ahụ (ọ bụ ezie na nke a chọrọ ọrụ ndị ọzọ):
$ docker image save uptimer | gzip | pv | ssh production-server 'zcat | docker image load'
25,7MiB 0:01:01 [ 425KiB/s] [ <=> ]
Loaded image: uptimer:latestNdụmọdụ: Ọ bụrụ na ịchọrọ ụyọkọ paramita iji jikọọ na sava site na SSH, ị nwere ike ọ gaghị eji faịlụ ahụ
~/.ssh/config.
Na-ebufe onyonyo site na docker image save/load - Nke a bụ usoro kachasị dị ntakịrị, mana ọ bụghị naanị otu. E nwere ndị ọzọ:
- Ndebanye aha akpa (ọkọlọtọ ụlọ ọrụ).
- Jikọọ na ihe nkesa docker daemon site na onye ọbịa ọzọ:
- mgbanwe gburugburu ebe obibi
DOCKER_HOST. - Nhọrọ ahịrị iwu
-Hma ọ bụ--hostngwádocker-compose. docker context
- mgbanwe gburugburu ebe obibi
Usoro nke abụọ (nwere nhọrọ atọ maka mmejuputa ya) kọwara nke ọma na isiokwu ahụ .
deploy.sh
Ugbu a, ka anyị chịkọta ihe niile anyị ji aka mee n'otu edemede. Ka anyị malite na ọrụ nke elu-elu, wee lelee ndị ọzọ eji na ya.
Usoro na-adọrọ mmasị
${parameter?err_msg}- otu n'ime anwansi bash (aka ). Ọ bụrụparameterakọwapụtaghị, mmepụtaerr_msgwee pụọ na koodu 1.docker --log-driver journald- site na ndabara, onye na-anya ụgbọ ala docker bụ faịlụ ederede na-enweghị ntụgharị ọ bụla. Site na usoro a, ndekọ ndị ahụ na-ejupụta ngwa ngwa diski dum, ya mere, maka ebe mmepụta ihe ọ dị mkpa ịgbanwe onye ọkwọ ụgbọ ala ka ọ bụrụ ihe amamihe dị na ya.
Ederede ntinye
deploy() {
local usage_msg="Usage: ${FUNCNAME[0]} image_name"
local image_name=${1?$usage_msg}
ensure-reverse-proxy || return 2
if get-active-slot $image_name
then
local OLD=${image_name}_BLUE
local new_slot=GREEN
else
local OLD=${image_name}_GREEN
local new_slot=BLUE
fi
local NEW=${image_name}_${new_slot}
echo "Deploying '$NEW' in place of '$OLD'..."
docker run
--detach
--restart always
--log-driver journald
--name $NEW
--network web-gateway
$image_name || return 3
echo "Container started. Checking health..."
for i in {1..20}
do
sleep 1
if get-service-status $image_name $new_slot
then
echo "New '$NEW' service seems OK. Switching heads..."
sleep 2 # Ensure service is ready
set-active-slot $image_name $new_slot || return 4
echo "'$NEW' service is live!"
sleep 2 # Ensure all requests were processed
echo "Killing '$OLD'..."
docker rm -f $OLD
docker image prune -f
echo "Deployment successful!"
return 0
fi
echo "New '$NEW' service is not ready yet. Waiting ($i)..."
done
echo "New '$NEW' service did not raise, killing it. Failed to deploy T_T"
docker rm -f $NEW
return 5
}Atụmatụ ejiri:
ensure-reverse-proxy- Gbaa mbọ hụ na proxy reverse na-arụ ọrụ (ọ bara uru maka mbugharị mbụ)get-active-slot service_name- Na-ekpebi oghere na-arụ ọrụ ugbu a maka ọrụ enyere (BLUEma ọ bụGREEN)get-service-status service_name deployment_slot- Na-ekpebi ma ọrụ ahụ adịla njikere ịhazi arịrịọ mbataset-active-slot service_name deployment_slot- Na-agbanwe nhazi nginx na akpa proxy reverse
Iji:
ensure-reverse-proxy() {
is-container-up reverse-proxy && return 0
echo "Deploying reverse-proxy..."
docker network create web-gateway
docker run
--detach
--restart always
--log-driver journald
--name reverse-proxy
--network web-gateway
--publish 80:80
nginx:alpine || return 1
docker exec --interactive reverse-proxy sh -c "> /etc/nginx/conf.d/default.conf"
docker exec reverse-proxy nginx -s reload
}
is-container-up() {
local container=${1?"Usage: ${FUNCNAME[0]} container_name"}
[ -n "$(docker ps -f name=${container} -q)" ]
return $?
}
get-active-slot() {
local service=${1?"Usage: ${FUNCNAME[0]} service_name"}
if is-container-up ${service}_BLUE && is-container-up ${service}_GREEN; then
echo "Collision detected! Stopping ${service}_GREEN..."
docker rm -f ${service}_GREEN
return 0 # BLUE
fi
if is-container-up ${service}_BLUE && ! is-container-up ${service}_GREEN; then
return 0 # BLUE
fi
if ! is-container-up ${service}_BLUE; then
return 1 # GREEN
fi
}
get-service-status() {
local usage_msg="Usage: ${FUNCNAME[0]} service_name deployment_slot"
local service=${1?usage_msg}
local slot=${2?$usage_msg}
case $service in
# Add specific healthcheck paths for your services here
*) local health_check_port_path=":8080/" ;;
esac
local health_check_address="http://${service}_${slot}${health_check_port_path}"
echo "Requesting '$health_check_address' within the 'web-gateway' docker network:"
docker run --rm --network web-gateway alpine
wget --timeout=1 --quiet --server-response $health_check_address
return $?
}
set-active-slot() {
local usage_msg="Usage: ${FUNCNAME[0]} service_name deployment_slot"
local service=${1?$usage_msg}
local slot=${2?$usage_msg}
[ "$slot" == BLUE ] || [ "$slot" == GREEN ] || return 1
get-nginx-config $service $slot | docker exec --interactive reverse-proxy sh -c "cat > /etc/nginx/conf.d/$service.conf"
docker exec reverse-proxy nginx -t || return 2
docker exec reverse-proxy nginx -s reload
}ọrụ get-active-slot chọrọ ntakịrị nkọwa:
Kedu ihe kpatara ọ na-eweghachi nọmba ma ọ naghị ewepụta eriri?
Agbanyeghị, na ọrụ ịkpọ oku anyị na-elele nsonaazụ nke ọrụ ya, na ịlele koodu ọpụpụ site na iji bash dị mfe karịa ịlele eriri. Na mgbakwunye, ịnweta eriri site na ya dị nnọọ mfe:
get-active-slot service && echo BLUE || echo GREEN.
Ọnọdụ atọ ọ bụ n'ezie zuru oke iji mata ọdịiche steeti niile?
Ọbụna abụọ ga-ezuru, nke ikpeazụ bụ ebe a naanị maka izu oke, ka ọ ghara ide else.
Naanị ọrụ na-eweghachite nginx configs ka enweghị nkọwa: get-nginx-config service_name deployment_slot. Site na ntụnyere na nlele ahụike, ebe a ị nwere ike ịtọ nhazi ọ bụla maka ọrụ ọ bụla. N'ime ihe ndị na-adọrọ mmasị - naanị cat <<- EOF, nke na-enye gị ohere iwepu taabụ niile na mbido. N'ezie, ọnụahịa nke nhazi nke ọma bụ ngwakọta taabụ na oghere, nke a na-ewere taa dị nnọọ njọ ụdị. Mana bash Force taabụ, ọ ga-adịkwa mma ịnwe nhazi ọ bụla na nhazi nginx. Na nkenke, ịgwakọta taabụ na oghere ebe a yiri ka ọ bụ ihe ngwọta kachasị mma na nke kachasị njọ. Otú ọ dị, ị gaghị ahụ nke a na snippet dị n'okpuru ebe ọ bụ na Habr "na-eme ya nke ọma" site n'ịgbanwe taabụ niile na oghere 4 ma mee ka EOF ghara ịdị irè. .
Ka ị ghara ibili ugboro abụọ, m ga-agwa gị ozugbo
cat << 'EOF', nke a ga-ezute ma emechaa. Ọ bụrụ na ị dee n'ụzọ dị mfecat << EOF, mgbe ahụ n'ime heredoc a na-agbanye eriri ahụ (a na-agbasawanye mgbanwe dị iche iche)$foo), oku oku ($(bar)) wdg), ma ọ bụrụ na i tinye ngwụcha akwụkwọ n'otu nkwupute, mgbe ahụ interpolation nwere nkwarụ na akara.$na-egosipụta ka ọ dị. Ihe ịchọrọ itinye ederede n'ime edemede ọzọ.
get-nginx-config() {
local usage_msg="Usage: ${FUNCNAME[0]} service_name deployment_slot"
local service=${1?$usage_msg}
local slot=${2?$usage_msg}
[ "$slot" == BLUE ] || [ "$slot" == GREEN ] || return 1
local container_name=${service}_${slot}
case $service in
# Add specific nginx configs for your services here
*) nginx-config-simple-service $container_name:8080 ;;
esac
}
nginx-config-simple-service() {
local usage_msg="Usage: ${FUNCNAME[0]} proxy_pass"
local proxy_pass=${1?$usage_msg}
cat << EOF
server {
listen 80;
location / {
proxy_pass http://$proxy_pass;
}
}
EOF
}Nke a bụ ederede dum. Ya mere maka nbudata site na wget ma ọ bụ curl.
Na-emezu scripts parameterized na sava dịpụrụ adịpụ
Ọ bụ oge ịkụ aka na nkesa lekwasịrị anya. Oge nke a localhost dabara nke ọma:
$ ssh-copy-id localhost
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
himura@localhost's password:
Number of key(s) added: 1
Now try logging into the machine, with: "ssh 'localhost'"
and check to make sure that only the key(s) you wanted were added.Anyị edeela script ntinye nke na-ebudata onyonyo ewuruburu na ihe nkesa ebumnuche wee dochie akpa ọrụ n'enweghị nsogbu, mana kedu ka anyị ga-esi gbuo ya na igwe dịpụrụ adịpụ? Edemede ahụ nwere arụmụka, ebe ọ bụ ụwa niile ma nwee ike ibuga ọtụtụ ọrụ n'otu oge n'okpuru proxy reverse (ị nwere ike iji nginx configs iji chọpụta nke url ga-abụ ọrụ). Enweghị ike ịchekwa edemede ahụ na ihe nkesa ahụ, ebe ọ bụ na nke a, anyị agaghị enwe ike imelite ya na-akpaghị aka (maka nzube nke mmezi ahụhụ na ịgbakwunye ọrụ ọhụrụ), na n'ozuzu, steeti = ọjọọ.
Ngwọta 1: Ka na-echekwa edemede ahụ na sava ahụ, mana detuo ya oge ọ bụla scp. Mgbe ahụ jikọọ site na ssh ma jiri arụmụka ndị dị mkpa mee edemede ahụ.
Cons:
- Omume abụọ kama otu
- Enwere ike ọ gaghị enwe ebe ị na-edegharị, ma ọ bụ enweghị ike ịnweta ya, ma ọ bụ enwere ike ịmebe edemede ahụ n'oge ndochi.
- Ọ bụ ihe amamihe dị na ya ịsacha onwe gị (hichapụ edemede ahụ).
- Ugbua omume atọ.
Ngwọta 2:
- Debe naanị nkọwa ọrụ n'edemede ma mee ihe ọ bụla
- Site n'enyemaka nke
sedtinye oku ọrụ na njedebe - Ziga ya ozugbo na shh site na ọkpọkọ (
|)
Ihe:
- N'ezie enweghị obodo
- Enweghị ihe eji esi mmiri ọkụ
- Na-adị jụụ
Ka anyị mee ya na-enweghị ike. Ee, ihe niile emebelarị. Ee, igwe kwụ otu ebe. Lee ka igwe kwụ otu ebe ahụ dị mfe, mara mma na nke pere mpe:
$ cat << 'EOF' > deploy.sh#!/bin/bash
usage_msg="Usage: $0 ssh_address local_image_tag"
ssh_address=${1?$usage_msg}
image_name=${2?$usage_msg}
echo "Connecting to '$ssh_address' via ssh to seamlessly deploy '$image_name'..."
( sed "$a deploy $image_name" | ssh -T $ssh_address ) << 'END_OF_SCRIPT'
deploy() {
echo "Yay! The '${FUNCNAME[0]}' function is executing on '$(hostname)' with argument '$1'"
}
END_OF_SCRIPTEOF
$ chmod +x deploy.sh
$ ./deploy.sh localhost magic-porridge-pot
Connecting to localhost...
Yay! The 'deploy' function is executing on 'hut' with argument 'magic-porridge-pot'Otú ọ dị, anyị enweghị ike ijide n'aka na onye ọbịa ahụ dịpụrụ adịpụ nwere bash zuru oke, ya mere anyị ga-agbakwunye obere nlele na mmalite (nke a bụ kama ):
if [ "$SHELL" != "/bin/bash" ]
then
echo "The '$SHELL' shell is not supported by 'deploy.sh'. Set a '/bin/bash' shell for '$USER@$HOSTNAME'."
exit 1
fiMa ugbu a ọ dị adị:
$ docker exec reverse-proxy rm /etc/nginx/conf.d/default.conf
$ wget -qO deploy.sh https://git.io/JUURc
$ chmod +x deploy.sh
$ ./deploy.sh localhost uptimer
Sending gzipped image 'uptimer' to 'localhost' via ssh...
Loaded image: uptimer:latest
Connecting to 'localhost' via ssh to seamlessly deploy 'uptimer'...
Deploying 'uptimer_GREEN' in place of 'uptimer_BLUE'...
06f5bc70e9c4f930e7b1f826ae2ca2f536023cc01e82c2b97b2c84d68048b18a
Container started. Checking health...
Requesting 'http://uptimer_GREEN:8080/' within the 'web-gateway' docker network:
HTTP/1.0 503 Service Unavailable
wget: server returned error: HTTP/1.0 503 Service Unavailable
New 'uptimer_GREEN' service is not ready yet. Waiting (1)...
Requesting 'http://uptimer_GREEN:8080/' within the 'web-gateway' docker network:
HTTP/1.0 503 Service Unavailable
wget: server returned error: HTTP/1.0 503 Service Unavailable
New 'uptimer_GREEN' service is not ready yet. Waiting (2)...
Requesting 'http://uptimer_GREEN:8080/' within the 'web-gateway' docker network:
HTTP/1.0 200 OK
Server: BaseHTTP/0.6 Python/3.8.3
Date: Sat, 22 Aug 2020 20:15:50 GMT
Content-Type: text/html
New 'uptimer_GREEN' service seems OK. Switching heads...
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
2020/08/22 20:15:54 [notice] 97#97: signal process started
The 'uptimer_GREEN' service is live!
Killing 'uptimer_BLUE'...
uptimer_BLUE
Total reclaimed space: 0B
Deployment successful!Ugbu a ị nwere ike imeghe N'ime ihe nchọgharị ahụ, megharịa ntinye ahụ ọzọ wee hụ na ọ na-agba ọsọ n'enweghị nsogbu site na imelite ibe dị ka CD n'oge nhazi.
Echefula ịsacha mgbe ọrụ gasịrị: 3
$ docker rm -f uptimer_GREEN reverse-proxy
uptimer_GREEN
reverse-proxy
$ docker network rm web-gateway
web-gateway
$ cd ..
$ rm -r blue-green-deploymentisi: www.habr.com