K8S应用笔记 —— 签发自签名证书用于Ingress的https配置

一、需求描述

在本地签发自命名证书，用于K8S集群的Ingress的https配置。

前提条件：

• 完成K8S集群搭建。
• 完成证书制作机器的openssl服务安装。

二、自签名证书制作

2.1 脚本及配置文件准备

2.1.1 CA.sh脚本准备

注意事项：

• openssl服务默认CA.sh地址为：/etc/pki/tls/misc/CA.sh，为证书拷贝方便基于原CA.sh进行复制对其原部分路径改写（改为读取同路径下的openssl.cnf文件）。

#!/bin/sh
#
# CA - wrapper around ca to make it easier to use ... basically ca requires
#      some setup stuff to be done before you can use it and this makes
#      things easier between now and when Eric is convinced to fix it :-)
#
# CA -newca ... will setup the right stuff
# CA -newreq ... will generate a certificate request
# CA -sign ... will sign the generated request and output
#
# At the end of that grab newreq.pem and newcert.pem (one has the key
# and the other the certificate) and cat them together and that is what
# you want/need ... I'll make even this a little cleaner later.
#
#
# 12-Jan-96 tjh    Added more things ... including CA -signcert which
#                  converts a certificate to a request and then signs it.
# 10-Jan-96 eay    Fixed a few more bugs and added the SSLEAY_CONFIG
#                  environment variable so this can be driven from
#                  a script.
# 25-Jul-96 eay    Cleaned up filenames some more.
# 11-Jun-96 eay    Fixed a few filename missmatches.
# 03-May-96 eay    Modified to use 'ssleay cmd' instead of 'cmd'.
# 18-Apr-96 tjh    Original hacking
#
# Tim Hudson
# tjh@cryptsoft.com
#

# default openssl.cnf file has setup as per the following
# demoCA ... where everything is stored
cp_pem() {
    infile=$1
    outfile=$2
    bound=$3
    flag=0
    exec <$infile;
    while read line; do
	if [ $flag -eq 1 ]; then
		echo $line|grep "^-----END.*$bound"  2>/dev/null 1>/dev/null
		if [ $? -eq 0 ] ; then
			echo $line >>$outfile
			break
		else
			echo $line >>$outfile
		fi
	fi

	echo $line|grep "^-----BEGIN.*$bound"  2>/dev/null 1>/dev/null
	if [ $? -eq 0 ]; then
		echo $line >$outfile
		flag=1
	fi
    done
}

usage() {
 echo "usage: $0 -newcert|-newreq|-newreq-nodes|-newca|-sign|-verify" >&2
}

if [ -z "$OPENSSL" ]; then OPENSSL=openssl; fi

if [ -z "$DAYS" ] ; then DAYS="-days 365" ; fi	# 1 year
CADAYS="-days 3650"	# 10 years
REQ="$OPENSSL req $SSLEAY_CONFIG"
CA="$OPENSSL ca $SSLEAY_CONFIG"
VERIFY="$OPENSSL verify"
X509="$OPENSSL x509"
PKCS12="openssl pkcs12"

if [ -z "$CATOP" ] ; then CATOP=./demoCA ; fi
CAKEY=./cakey.pem
CAREQ=./careq.pem
CACERT=./cacert.pem

RET=0

while [ "$1" != "" ] ; do
case $1 in
-\?|-h|-help)
    usage
    exit 0
    ;;
-newcert)
    # create a certificate
    $REQ -config openssl.cnf -new -x509 -keyout newkey.pem -out newcert.pem $DAYS
    RET=$?
    echo "Certificate is in newcert.pem, private key is in newkey.pem"
    ;;
-newreq)
    # create a certificate request
    $REQ -config openssl.cnf -new -keyout newkey.pem -out newreq.pem $DAYS
    RET=$?
    echo "Request is in newreq.pem, private key is in newkey.pem"
    ;;
-newreq-nodes) 
    # create a certificate request
    $REQ -config openssl.cnf -new -nodes -keyout newreq.pem -out newreq.pem $DAYS
    RET=$?
    echo "Request (and private key) is in newreq.pem"
    ;;
-newca)
    # if explicitly asked for or it doesn't exist then setup the directory
    # structure that Eric likes to manage things
    NEW="1"
    if [ "$NEW" -o ! -f ${CATOP}/serial ]; then
	# create the directory hierarchy
	mkdir -p ${CATOP}
	mkdir -p ${CATOP}/certs
	mkdir -p ${CATOP}/crl
	mkdir -p ${CATOP}/newcerts
	mkdir -p ${CATOP}/private
	touch ${CATOP}/index.txt
    fi
    if [ ! -f ${CATOP}/private/$CAKEY ]; then
	echo "CA certificate filename (or enter to create)"
	read FILE

	# ask user for existing CA certificate
	if [ "$FILE" ]; then
	    cp_pem $FILE ${CATOP}/private/$CAKEY PRIVATE
	    cp_pem $FILE ${CATOP}/$CACERT CERTIFICATE
	    RET=$?
	    if [ ! -f "${CATOP}/serial" ]; then
		$X509 -config openssl.cnf -in ${CATOP}/$CACERT -noout -next_serial \
		      -out ${CATOP}/serial
	    fi
	else
	    echo "Making CA certificate ..."
	    $REQ -config openssl.cnf -new -keyout ${CATOP}/private/$CAKEY \
			   -out ${CATOP}/$CAREQ
	    $CA -config openssl.cnf -create_serial -out ${CATOP}/$CACERT $CADAYS -batch \
			   -keyfile ${CATOP}/private/$CAKEY -selfsign \
			   -extensions v3_ca \
			   -infiles ${CATOP}/$CAREQ
	    RET=$?
	fi
    fi
    ;;
-xsign)
    $CA -config openssl.cnf -policy policy_anything -infiles newreq.pem
    RET=$?
    ;;
-pkcs12)
    if [ -z "$2" ] ; then
	CNAME="My Certificate"
    else
	CNAME="$2"
    fi
    $PKCS12 -config openssl.cnf -in newcert.pem -inkey newreq.pem -certfile ${CATOP}/$CACERT \
	    -out newcert.p12 -export -name "$CNAME"
    RET=$?
    exit $RET
    ;;
-sign|-signreq)
    $CA -config openssl.cnf -policy policy_anything -out newcert.pem -infiles newreq.pem
    RET=$?
    cat newcert.pem
    echo "Signed certificate is in newcert.pem"
    ;;
-signCA)
    $CA -config openssl.cnf -policy policy_anything -out newcert.pem -extensions v3_ca -infiles newreq.pem
    RET=$?
    echo "Signed CA certificate is in newcert.pem"
    ;;
-signcert)
    echo "Cert passphrase will be requested twice - bug?"
    $X509 -config openssl.cnf -x509toreq -in newreq.pem -signkey newreq.pem -out tmp.pem
    $CA -config openssl.cnf -policy policy_anything -out newcert.pem -infiles tmp.pem
    RET=$?
    cat newcert.pem
    echo "Signed certificate is in newcert.pem"
    ;;
-verify)
    shift
    if [ -z "$1" ]; then
	    $VERIFY -CAfile $CATOP/$CACERT newcert.pem
	    RET=$?
    else
	for j
	do
	    $VERIFY -CAfile $CATOP/$CACERT $j
	    if [ $? != 0 ]; then
		    RET=$?
	    fi
	done
    fi
    exit $RET
    ;;
*)
    echo "Unknown arg $i" >&2
    usage
    exit 1
    ;;
esac
shift
done
exit $RET

命令参数选项 ：

• -newcert：新证书
• -newreq：新请求
• -newreq-nodes：新请求节点
• -newca ：新的CA证书
• -sign：签证
• -verify：验证

2.1.2 配置文件openssl.cnf

#
# OpenSSL example configuration file.
# This is mostly being used for generation of certificate requests.
#

# This definition stops the following lines choking if HOME isn't
# defined.
HOME			= .
RANDFILE		= $ENV::HOME/.rnd

# Extra OBJECT IDENTIFIER info:
#oid_file		= $ENV::HOME/.oid
oid_section		= new_oids

# To use this configuration file with the "-extfile" option of the
# "openssl x509" utility, name here the section containing the
# X.509v3 extensions to use:
# extensions		= 
# (Alternatively, use a configuration file that has only
# X.509v3 extensions in its main [= default] section.)

[ new_oids ]

# We can add new OIDs in here for use by 'ca', 'req' and 'ts'.
# Add a simple OID like this:
# testoid1=1.2.3.4
# Or use config file substitution like this:
# testoid2=${testoid1}.5.6

# Policies used by the TSA examples.
tsa_policy1 = 1.2.3.4.1
tsa_policy2 = 1.2.3.4.5.6
tsa_policy3 = 1.2.3.4.5.7

####################################################################
[ ca ]
default_ca	= CA_default		# The default ca section

####################################################################
[ CA_default ]

dir		= ./demoCA		# Where everything is kept
certs		= $dir/certs		# Where the issued certs are kept
crl_dir		= $dir/crl		# Where the issued crl are kept
database	= $dir/index.txt	# database index file.
#unique_subject	= no			# Set to 'no' to allow creation of
					# several ctificates with same subject.
new_certs_dir	= $dir/newcerts		# default place for new certs.

certificate	= $dir/cacert.pem 	# The CA certificate
serial		= $dir/serial 		# The current serial number
crlnumber	= $dir/crlnumber	# the current crl number
					# must be commented out to leave a V1 CRL
crl		= $dir/crl.pem 		# The current CRL
private_key	= $dir/private/cakey.pem# The private key
RANDFILE	= $dir/private/.rand	# private random number file

x509_extensions	= usr_cert		# The extentions to add to the cert

# Comment out the following two lines for the "traditional"
# (and highly broken) format.
name_opt 	= ca_default		# Subject Name options
cert_opt 	= ca_default		# Certificate field options

# Extension copying option: use with caution.
# copy_extensions = copy

# Extensions to add to a CRL. Note: Netscape communicator chokes on V2 CRLs
# so this is commented out by default to leave a V1 CRL.
# crlnumber must also be commented out to leave a V1 CRL.
# crl_extensions	= crl_ext

default_days	= 3650			# how long to certify for
default_crl_days= 30			# how long before next CRL
default_md	= default		# use public key default MD
preserve	= no			# keep passed DN ordering

# A few difference way of specifying how similar the request should look
# For type CA, the listed attributes must be the same, and the optional
# and supplied fields are just that :-)
policy		= policy_match

# For the CA policy
[ policy_match ]
countryName		= match
stateOrProvinceName	= match
organizationName	= match
organizationalUnitName	= optional
commonName		= supplied
emailAddress		= optional

# For the 'anything' policy
# At this point in time, you must list all acceptable 'object'
# types.
[ policy_anything ]
countryName		= optional
stateOrProvinceName	= optional
localityName		= optional
organizationName	= optional
organizationalUnitName	= optional
commonName		= supplied
emailAddress		= optional

####################################################################
[ req ]
default_bits		= 2048
default_keyfile 	= privkey.pem
distinguished_name	= req_distinguished_name
attributes		= req_attributes
x509_extensions	= v3_ca	# The extentions to add to the self signed cert

# Passwords for private keys if not present they will be prompted for
# input_password = secret
# output_password = secret

# This sets a mask for permitted string types. There are several options. 
# default: PrintableString, T61String, BMPString.
# pkix	 : PrintableString, BMPString (PKIX recommendation before 2004)
# utf8only: only UTF8Strings (PKIX recommendation after 2004).
# nombstr : PrintableString, T61String (no BMPStrings or UTF8Strings).
# MASK:XXXX a literal mask value.
# WARNING: ancient versions of Netscape crash on BMPStrings or UTF8Strings.
string_mask = utf8only

# req_extensions = v3_req # The extensions to add to a certificate request

[ req_distinguished_name ]
countryName			= Country Name (2 letter code)
countryName_default		= AU
countryName_min			= 2
countryName_max			= 2

stateOrProvinceName		= State or Province Name (full name)
stateOrProvinceName_default	= Some-State

localityName			= Locality Name (eg, city)

0.organizationName		= Organization Name (eg, company)
0.organizationName_default	= Internet Widgits Pty Ltd

# we can do this but it is not needed normally :-)
#1.organizationName		= Second Organization Name (eg, company)
#1.organizationName_default	= World Wide Web Pty Ltd

organizationalUnitName		= Organizational Unit Name (eg, section)
#organizationalUnitName_default	=

commonName			= Common Name (e.g. server FQDN or YOUR name)
commonName_max			= 64

emailAddress			= Email Address
emailAddress_max		= 64

# SET-ex3			= SET extension number 3

[ req_attributes ]
challengePassword		= A challenge password
challengePassword_min		= 4
challengePassword_max		= 20

unstructuredName		= An optional company name

[ usr_cert ]

# These extensions are added when 'ca' signs a request.

# This goes against PKIX guidelines but some CAs do it and some software
# requires this to avoid interpreting an end user certificate as a CA.

basicConstraints=CA:FALSE

# Here are some examples of the usage of nsCertType. If it is omitted
# the certificate can be used for anything *except* object signing.

# This is OK for an SSL server.
# nsCertType			= server

# For an object signing certificate this would be used.
# nsCertType = objsign

# For normal client use this is typical
# nsCertType = client, email

# and for everything including object signing:
# nsCertType = client, email, objsign

# This is typical in keyUsage for a client certificate.
# keyUsage = nonRepudiation, digitalSignature, keyEncipherment

# This will be displayed in Netscape's comment listbox.
nsComment			= "OpenSSL Generated Certificate"

# PKIX recommendations harmless if included in all certificates.
subjectKeyIdentifier=hash
authorityKeyIdentifier=keyid,issuer

# This stuff is for subjectAltName and issuerAltname.
# Import the email address.
# subjectAltName=email:copy
# An alternative to produce certificates that aren't
# deprecated according to PKIX.
# subjectAltName=email:move

# Copy subject details
# issuerAltName=issuer:copy

#nsCaRevocationUrl		= http://www.domain.dom/ca-crl.pem
#nsBaseUrl
#nsRevocationUrl
#nsRenewalUrl
#nsCaPolicyUrl
#nsSslServerName

# This is required for TSA certificates.
# extendedKeyUsage = critical,timeStamping

[ v3_req ]

# Extensions to add to a certificate request

basicConstraints = CA:FALSE
keyUsage = nonRepudiation, digitalSignature, keyEncipherment

[ v3_ca ]


# Extensions for a typical CA


# PKIX recommendation.

subjectKeyIdentifier=hash

authorityKeyIdentifier=keyid:always,issuer

# This is what PKIX recommends but some broken software chokes on critical
# extensions.
#basicConstraints = critical,CA:true
# So we do this instead.
basicConstraints = CA:true

# Key usage: this is typical for a CA certificate. However since it will
# prevent it being used as an test self-signed certificate it is best
# left out by default.
# keyUsage = cRLSign, keyCertSign

# Some might want this also
# nsCertType = sslCA, emailCA

# Include email address in subject alt name: another PKIX recommendation
# subjectAltName=email:copy
subjectAltName=@alt_names
[alt_names]
DNS.1 = nginx.local
DNS.2 = *.nginx.local
IP.1 = 192.168.0.50
IP.2 = 192.168.0.51

# Copy issuer details
# issuerAltName=issuer:copy

# DER hex encoding of an extension: beware experts only!
# obj=DER:02:03
# Where 'obj' is a standard or added object
# You can even override a supported extension:
# basicConstraints= critical, DER:30:03:01:01:FF

[ crl_ext ]

# CRL extensions.
# Only issuerAltName and authorityKeyIdentifier make any sense in a CRL.

# issuerAltName=issuer:copy
authorityKeyIdentifier=keyid:always

[ proxy_cert_ext ]
# These extensions should be added when creating a proxy certificate

# This goes against PKIX guidelines but some CAs do it and some software
# requires this to avoid interpreting an end user certificate as a CA.

basicConstraints=CA:FALSE

# Here are some examples of the usage of nsCertType. If it is omitted
# the certificate can be used for anything *except* object signing.

# This is OK for an SSL server.
# nsCertType			= server

# For an object signing certificate this would be used.
# nsCertType = objsign

# For normal client use this is typical
# nsCertType = client, email

# and for everything including object signing:
# nsCertType = client, email, objsign

# This is typical in keyUsage for a client certificate.
# keyUsage = nonRepudiation, digitalSignature, keyEncipherment

# This will be displayed in Netscape's comment listbox.
nsComment			= "OpenSSL Generated Certificate"

# PKIX recommendations harmless if included in all certificates.
subjectKeyIdentifier=hash
authorityKeyIdentifier=keyid,issuer

# This stuff is for subjectAltName and issuerAltname.
# Import the email address.
# subjectAltName=email:copy
# An alternative to produce certificates that aren't
# deprecated according to PKIX.
# subjectAltName=email:move

# Copy subject details
# issuerAltName=issuer:copy

#nsCaRevocationUrl		= http://www.domain.dom/ca-crl.pem
#nsBaseUrl
#nsRevocationUrl
#nsRenewalUrl
#nsCaPolicyUrl
#nsSslServerName

# This really needs to be in place for it to be a proxy certificate.
proxyCertInfo=critical,language:id-ppl-anyLanguage,pathlen:3,policy:foo

####################################################################
[ tsa ]

default_tsa = tsa_config1	# the default TSA section

[ tsa_config1 ]

# These are used by the TSA reply generation only.
dir		= ./demoCA		# TSA root directory
serial		= $dir/tsaserial	# The current serial number (mandatory)
crypto_device	= builtin		# OpenSSL engine to use for signing
signer_cert	= $dir/tsacert.pem 	# The TSA signing certificate
					# (optional)
certs		= $dir/cacert.pem	# Certificate chain to include in reply
					# (optional)
signer_key	= $dir/private/tsakey.pem # The TSA private key (optional)

default_policy	= tsa_policy1		# Policy if request did not specify it
					# (optional)
other_policies	= tsa_policy2, tsa_policy3	# acceptable policies (optional)
digests		= md5, sha1		# Acceptable message digests (mandatory)
accuracy	= secs:1, millisecs:500, microsecs:100	# (optional)
clock_precision_digits  = 0	# number of digits after dot. (optional)
ordering		= yes	# Is ordering defined for timestamps?
				# (optional, default: no)
tsa_name		= yes	# Must the TSA name be included in the reply?
				# (optional, default: no)
ess_cert_id_chain	= no	# Must the ESS cert id chain be included?
				# (optional, default: no)

通过以下配置：

subjectAltName=@alt_names
[alt_names]
DNS.1 = nginx.local
DNS.2 = *.nginx.local
IP.1 = 192.168.0.50
IP.2 = 192.168.0.51

指定扩展属性（证书使用者可选名称）为：指定主域名、泛域名和本地IP。

最新效果：

2.2 生成根CA

[root@k8s-master openssl-CA]# sh CA.sh -newca
CA certificate filename (or enter to create)

Making CA certificate ...
Generating a 2048 bit RSA private key
...................+++
...............................................................................................................+++
writing new private key to './demoCA/private/./cakey.pem'
Enter PEM pass phrase:
Verifying - Enter PEM pass phrase:
-----
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [AU]:CN
State or Province Name (full name) [Some-State]:Heilongjiang
Locality Name (eg, city) []:haerbin
Organization Name (eg, company) [Internet Widgits Pty Ltd]:IT
Organizational Unit Name (eg, section) []:
Common Name (e.g. server FQDN or YOUR name) []:rootca
Email Address []:

Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:
An optional company name []:
Using configuration from openssl.cnf
Enter pass phrase for ./demoCA/private/./cakey.pem:
139713450506128:error:28069065:lib(40):UI_set_result:result too small:ui_lib.c:831:You must type in 4 to 1023 characters
Enter pass phrase for ./demoCA/private/./cakey.pem:
139713450506128:error:28069065:lib(40):UI_set_result:result too small:ui_lib.c:831:You must type in 4 to 1023 characters
Enter pass phrase for ./demoCA/private/./cakey.pem:
139713450506128:error:28069065:lib(40):UI_set_result:result too small:ui_lib.c:831:You must type in 4 to 1023 characters
Enter pass phrase for ./demoCA/private/./cakey.pem:
Check that the request matches the signature
Signature ok
Certificate Details:
        Serial Number:
            e7:e3:fc:9f:64:e6:9c:c2
        Validity
            Not Before: Aug 18 06:15:34 2023 GMT
            Not After : Aug 15 06:15:34 2033 GMT
        Subject:
            countryName               = CN
            stateOrProvinceName       = Heilongjiang
            organizationName          = IT
            commonName                = rootca
        X509v3 extensions:
            X509v3 Subject Key Identifier: 
                99:D0:C2:47:62:E4:16:CE:83:2D:21:83:2C:21:6A:A9:63:7D:03:AA
            X509v3 Authority Key Identifier: 
                keyid:99:D0:C2:47:62:E4:16:CE:83:2D:21:83:2C:21:6A:A9:63:7D:03:AA

            X509v3 Basic Constraints: 
                CA:TRUE
            X509v3 Subject Alternative Name: 
                DNS:nginx.local, DNS:*.nginx.local, IP Address:192.168.0.50, IP Address:192.168.0.51
Certificate is to be certified until Aug 15 06:15:34 2033 GMT (3650 days)

Write out database with 1 new entries
Data Base Updated
[root@k8s-master openssl-CA]# 

注意事项：

• 提示Enter PEM pass phrase:时输入密码，自定义，请记住后续还需使用。

2.3 产生证书请求

[root@k8s-master openssl-CA]# sh CA.sh -newreq
Generating a 2048 bit RSA private key
..................................................+++
....................+++
writing new private key to 'newkey.pem'
Enter PEM pass phrase:
Verifying - Enter PEM pass phrase:
-----
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [AU]:CN
State or Province Name (full name) [Some-State]:Heilong
Locality Name (eg, city) []:haerbin
Organization Name (eg, company) [Internet Widgits Pty Ltd]:IT
Organizational Unit Name (eg, section) []:
Common Name (e.g. server FQDN or YOUR name) []:*.nginx.local
Email Address []:

Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:123456
An optional company name []:
Request is in newreq.pem, private key is in newkey.pem
[root@k8s-master openssl-CA]# 

注意事项：

• 提示Common Name (e.g. server FQDN or YOUR name) []:时我输入的为*.nginx.local泛域名。

2.4 签发证书

[root@k8s-master openssl-CA]# sh CA.sh -signCA
Using configuration from openssl.cnf
Enter pass phrase for ./demoCA/private/cakey.pem:
Check that the request matches the signature
Signature ok
Certificate Details:
        Serial Number:
            e7:e3:fc:9f:64:e6:9c:c3
        Validity
            Not Before: Aug 18 06:20:48 2023 GMT
            Not After : Aug 15 06:20:48 2033 GMT
        Subject:
            countryName               = CN
            stateOrProvinceName       = Heilong
            localityName              = haerbin
            organizationName          = IT
            commonName                = *.nginx.local
        X509v3 extensions:
            X509v3 Subject Key Identifier: 
                3E:AD:81:4C:AA:85:3E:D6:78:83:5B:63:3D:CA:A5:F2:59:97:42:14
            X509v3 Authority Key Identifier: 
                keyid:99:D0:C2:47:62:E4:16:CE:83:2D:21:83:2C:21:6A:A9:63:7D:03:AA

            X509v3 Basic Constraints: 
                CA:TRUE
            X509v3 Subject Alternative Name: 
                DNS:nginx.local, DNS:*.nginx.local, IP Address:192.168.0.50, IP Address:192.168.0.51
Certificate is to be certified until Aug 15 06:20:48 2033 GMT (3650 days)
Sign the certificate? [y/n]:y


1 out of 1 certificate requests certified, commit? [y/n]y
Write out database with 1 new entries
Data Base Updated
Signed CA certificate is in newcert.pem
[root@k8s-master openssl-CA]# 

2.5 导出私钥

注意事项：

• 避免出现：服务启动提示输入：PEM pass phrase情况，故将私钥导出。

[root@k8s-master openssl-CA]# openssl rsa -in newkey.pem -out nginx.local.key
Enter pass phrase for newkey.pem:
writing RSA key

2.6 导出证书

[root@k8s-master openssl-CA]# openssl x509 -in newcert.pem  -out nginx.local.pem
[root@k8s-master openssl-CA]# 

2.7 导出Windows平台能安装的根证书

[root@k8s-master openssl-CA]# cd demoCA/
[root@k8s-master demoCA]# openssl x509 -in cacert.pem -out cacert.crt
[root@k8s-master demoCA]# cd ..
[root@k8s-master openssl-CA]# 

2.8 导出Linux平台能安装的根证书

[root@k8s-master openssl-CA]# openssl x509 -in demoCA/cacert.pem -out ca.pem
[root@k8s-master openssl-CA]# 

查看根证书ca.pem

切换root权限，将根证书内容追加到受信任根证书列表配置文件

[root@k8s-master openssl-CA]# 
[root@k8s-master openssl-CA]# cat ca.pem >> /etc/pki/tls/certs/ca-bundle.crt

三、自签名证书写入secret

kubectl create secret tls nginx.local --key nginx.local.key  --cert nginx.local.pem

四、Deployment具体配置

完整配置文件myapp-deployment.yaml：

---
kind: Deployment
apiVersion: apps/v1
metadata:
  name: myapp
  namespace: default
  annotations: {}
spec:
  replicas: 5
  selector:
    matchLabels:
      app: myapp
      release: canary
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: myapp
        release: canary
    spec:
      containers:
        - name: myapp
          image: 'ikubernetes/myapp:v2'
          ports:
            - name: httpd
              containerPort: 80
              protocol: TCP
          resources: {}
          terminationMessagePath: /dev/termination-log
          terminationMessagePolicy: File
          imagePullPolicy: IfNotPresent
      restartPolicy: Always
      terminationGracePeriodSeconds: 30
      dnsPolicy: ClusterFirst
      securityContext: {}
      schedulerName: default-scheduler
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 25%
      maxSurge: 25%
  revisionHistoryLimit: 10
  progressDeadlineSeconds: 600

---
kind: Service
apiVersion: v1
metadata:
  name: myapp
  namespace: default
  annotations: {}
spec:
  ports:
    - name: http
      protocol: TCP
      port: 80
      targetPort: 80
  selector:
    app: myapp
    release: canary
  type: ClusterIP
  sessionAffinity: None
  ipFamilies:
    - IPv4
  ipFamilyPolicy: SingleStack
  internalTrafficPolicy: Cluster

---
kind: Ingress
apiVersion: networking.k8s.io/v1
metadata:
  name: myapp
  namespace: default
spec:
  ingressClassName: nginx-ingress
  tls:
    - hosts:
        - myapp.nginx.local
      secretName: nginx.local
  rules:
    - host: myapp.nginx.local
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: myapp
                port:
                  number: 80

---
kind: Secret
apiVersion: v1
metadata:
  name: nginx.local
  namespace: default
data:
  tls.crt: >-
    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
  tls.key: >-
    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
type: kubernetes.io/tls

五、效果

将导出Windows平台能安装的根证书进行安装。最后效果：

文章来源地址https://www.toymoban.com/news/detail-662637.html

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