Fluentd opensearch plugin does not send full certificate chain

#### Problem description
Fluentd cannot communicate with OpenSearch because, during the SSL handshake, the Fluentd OpenSearch plugin sends only its microservice certificate instead of the full certificate chain, including the intermediate CA. However, when using the same certificate with Curl to communicate with OpenSearch, it works fine because Curl sends the complete certificate chain.
#### Steps to replicate

1. **Create issuer with intermediate CA**
```shell
#!/bin/bash
mkdir -p out
function generate_root_certificate() {
root_CA_config="[req]
default_bits = 4096
prompt = no
default_md = sha256
distinguished_name = dn
[dn]
CN = Root CA
O = MyOrg
[v3_ca]
basicConstraints = CA:TRUE
keyUsage = keyCertSign, cRLSign
authorityKeyIdentifier = keyid,issuer:always"
openssl genpkey -algorithm RSA -pkeyopt rsa_keygen_bits:4096 -out ./out/root_ca.key
openssl req -x509 -new -key ./out/root_ca.key \
-out ./out/root_ca.crt \
-days 7300 \
-config /dev/stdin <<< "$root_CA_config" \
-extensions v3_ca
}
function generate_certificates() {
openssl genrsa -out "./out/$1.key" 4096
siteConfig="[req]
default_bits = 4096
prompt = no
default_md = sha256
distinguished_name = dn
[dn]
CN = $1 Intermediate CA
O = MyOrg
[v3_ca]
basicConstraints = CA:TRUE
keyUsage = keyCertSign, cRLSign
authorityKeyIdentifier = keyid,issuer:always"
openssl req -new -key "./out/$1.key" \
-out "./out/$1.csr" \
-config /dev/stdin <<< "$siteConfig" \
-days 3650 \
-extensions v3_ca
openssl x509 -req -in "./out/$1.csr" \
-CA ./out/root_ca.crt -CAkey ./out/root_ca.key \
-CAcreateserial -out "./out/$1.crt" \
-days 3650 \
-extensions v3_ca \
-extfile /dev/stdin <<< "$siteConfig"
}
generate_root_certificate
generate_certificates site-a
cat ./out/site-a.crt ./out/root_ca.crt > combined-site-a.crt
```

2. **Create Secret for the ClusterIssuer**

```shell
kubectl create secret tls bug-report-ca-secret --cert=./combined-site-a.crt --key=./out/site-a.key -n ncms
```
3. **Create ClusterIssuer**
```
apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
name: bug-report-ca-issuer
spec:
ca:
secretName: bug-report-ca-secret
```
```shell
kubectl apply -f clusterIssuer.yaml
clusterissuer.cert-manager.io/bug-report-ca-issuer created

[abc@machine user]$ k get clusterissuer
NAME READY AGE
bug-report-ca-issuer True 39s
```

4. **Replace all certificates old ClusterIssuer to new ClusterIssuer**
```shell
CERTIFICATES=$(kubectl get certificates -o jsonpath='{.items[*].metadata.name}')
NEW_ISSUER=bug-report-ca-issuer
for CERT in $CERTIFICATES; do kubectl patch certificate $CERT -n $NAMESPACE --type=json -p="[{'op': 'replace', 'path': '/spec/issuerRef/name', 'value': '$NEW_ISSUER'}]"; echo "Updated $CERT to use $NEW_ISSUER"; done
```

5. **Delete secrets to enforce new one generation**
```shell
kubectl get certificates | awk 'NR > 1' | awk '{print $3}' | xargs kubectl delete secret
```

6. **switch opensearch to print SSL handshake logs (Optional)**
Edit configmap-
```shell
kubectl edit cm bp23-btel-belk-elasticsearch-jvmopt
```
and add `-Djavax.net.debug=ssl:handshake`
Provide example config and message

#### Plugin configuration
```shell

@type copy

@type opensearch
host bp23-opensearch.test_ns.svc.cluster.local
port 9200
resurrect_after 5s
id_key _hash
type_name fluentd
time_key time
utc_index true
time_key_exclude_timestamp true
logstash_format true
logstash_prefix fluentd-${tag[2]}-${tag[3]}
reload_connections false
reconnect_on_error true
reload_on_failure true
bulk_message_request_threshold 8MB
request_timeout 30s
ca_file /etc/td-agent/sharedMountFiles/isroot_cert
client_cert /etc/td-agent/oscerts/tls.crt
client_key /etc/td-agent/oscerts/tls.key
scheme https
ssl_verify true
ssl_version TLSv1_2
suppress_type_name true

@type file
path /var/log/td-agent/opensearch-buffer-test_ns/org.logging.all.all
flush_mode interval
flush_interval 30s
timekey 3600
retry_forever true
chunk_limit_size 8MB
retry_max_interval 5s
overflow_action block
total_limit_size 1024m



# Suppress all non matching tags at the end of this label

```
#### Logs
The handshake begins and the server presents its full certificate
```
opensearch µservice certificate
intermediate certificate
```
as seen in
Log1

"message":"javax.net.ssl|DEBUG|15|opensearch[bp23-""-xyz-opensearch-client-654799dd7f-gwn5v][transport_worker][T#1]|2024-04-25 09:22:40.055 UTC|null:-1|Produced ServerHello handshake message ("}}
"message":""ServerHello": {"}}
"message":" "server version" : "TLSv1.2","}}
"message":" "random" : "60 4C B6 F3 1C 20 A1 44 11 41 0B F9 9B 7D 95 64 51 2E B2 2F 3D 5C 4F AE 50 43 F7 35 3D 2D 19 D6","}}
"message":" "session id" : "","}}
"message":" "cipher suite" : "TLS_AES_256_GCM_SHA384(0x1302)","}}
"message":" "compression methods" : "00","}}
"message":" "extensions" : ["}}
"message":" "supported_versions (43)": {"}}
"message":" "selected version": [TLSv1.3]"}}
"message":" },"}}
"message":" "key_share (51)": {"}}
"message":" "server_share": {"}}
"message":" "named group": x25519"}}
"message":" "key_exchange": {"}}
"message":" 0000: 84 CA 67 73 D6 EE CB 41 FB 6F D3 93 4C DD FD 33 ..gs...A.o..L..3"}}
"message":" 0010: 24 87 85 54 91 DB BC ED 17 B2 24 3C 69 81 20 31 $..T......$"}}
"message":" }"}}
"message":" },"}}
"message":" {"}}
"message":" "certificate" : {"}}
"message":" "version" : "v3","}}
"message":" "serial number" : "00 AE E0 F5 8E D2 2E 02 2E","}}
"message":" "signature algorithm": "SHA256withRSA","}}
"message":" "issuer" : "O=MyOrg, CN=Root CA","}}
"message":" "not before" : "2024-04-23 11:50:13.000 UTC","}}
"message":" "not after" : "2034-04-21 11:50:13.000 UTC","}}
"message":" "subject" : "O=MyOrg, CN=site-a Intermediate CA","}}
"message":" "subject public key" : "RSA","}}
"message":" "extensions" : ["}}
"message":" {"}}
"message":" ObjectId: 2.5.29.35 Criticality=false"}}
"message":" AuthorityKeyIdentifier ["}}
"message":" [O=MyOrg, CN=Root CA]"}}
"message":" SerialNumber: [ b1cd36c9 82249830]"}}
"message":" ]"}}
"message":" },"}}
"message":" {"}}
"message":" ObjectId: 2.5.29.19 Criticality=false"}}
"message":" BasicConstraints:["}}
"message":" CA:true"}}
"message":" PathLen:2147483647"}}
"message":" ]"}}
"message":" },"}}
"message":" {"}}
"message":" ObjectId: 2.5.29.15 Criticality=false"}}
"message":" KeyUsage ["}}
"message":" Key_CertSign"}}
"message":" Crl_Sign"}}
"message":" ]"}}
"message":" }"}}
"message":" ]}"}}
"message":" "extensions": {"}}
"message":" "}}
"message":" }"}}
"message":" },"}}
"message":"]"}}
"message":"}"}}
"message":")"}}

but the client presents only its ```fluentd µservice certificate```
as in
Log2

UTC|null:-1|Produced server Finished handshake message ("}}
"message":""Finished": {"}}
"message":" "verify data": {"}}
"message":" 0000: A9 31 B9 E8 1C 38 2B E4 1A 95 A1 E9 3B 20 C0 4F .1...8+.....; .O"}}
"message":" 0010: C9 AF 4F 61 5A 3E FA 53 4A BB 8E E7 7E C6 87 68 ..OaZ>.SJ......h"}}
"message":" 0020: 31 1A 9C 0E 64 6C 58 75 DC 20 20 45 55 8A 2B 17 1...dlXu. EU.+."}}
"message":" }'}"}}
"message":")"}}
"message":"javax.net.ssl|DEBUG|15|opensearch[bp23-""-xyz-opensearch-client-654799dd7f-gwn5v][transport_worker][T#1]|2024-04-25 09:22:40.066 UTC|null:-1|KeyLimit write side: algorithm = AES/GCM/NOPADDING:KEYUPDATE"}}
"message":"countdown value = 137438953472"}}
"message":"javax.net.ssl|DEBUG|15|opensearch[bp23-""-xyz-opensearch-client-654799dd7f-gwn5v][transport_worker][T#1]|2024-04-25 09:22:40.070 UTC|null:-1|Consuming client Certificate handshake message ("}}
"message":""Certificate": {"}}
"message":" "certificate_request_context": "","}}
"message":" "certificate_list": [ "}}
"message":" {"}}
"message":" "certificate" : {"}}
"message":" "version" : "v3","}}
"message":" "serial number" : "00 EB F1 0F 16 01 05 4B B0 85 2B 44 18 61 40 66 A4","}}
"message":" "signature algorithm": "SHA256withRSA","}}
"message":" "issuer" : "O=MyOrg, CN=site-a Intermediate CA","}}
"message":" "not before" : "2024-04-23 12:02:10.000 UTC","}}
"message":" "not after" : "2025-04-23 12:02:10.000 UTC","}}
"message":" "subject" : "CN=bp23-fluentd, O=Company","}}
"message":" "subject public key" : "RSA","}}
"message":" "extensions" : ["}}
"message":" {"}}
"message":" ObjectId: 2.5.29.19 Criticality=true"}}
"message":" BasicConstraints:["}}
"message":" CA:false"}}
"message":" PathLen: undefined"}}
"message":" ]"}}
"message":" },"}}
"message":" {"}}
"message":" ObjectId: 2.5.29.37 Criticality=false"}}
"message":" ExtendedKeyUsages ["}}
"message":" serverAuth"}}
"message":" clientAuth"}}
"message":" ]"}}
"message":" },"}}
"message":" {"}}
"message":" ObjectId: 2.5.29.17 Criticality=false"}}
"message":" SubjectAlternativeName ["}}
"message":" DNSName: bp23-fluentd.test_ns.svc.cluster.local"}}
"message":" ]"}}
"message":" }"}}
"message":" ]}"}}
"message":" "extensions": {"}}
"message":" "}}
"message":" }"}}
"message":" },"}}
"message":"]"}}
"message":"}"}}
"message":")"}}
"message":"javax.net.ssl|ERROR|15|opensearch[bp23-""-xyz-opensearch-client-654799dd7f-gwn5v][transport_worker][T#1]|2024-04-25 09:22:40.072 UTC|null:-1|Fatal (CERTIFICATE_UNKNOWN): PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target ("}}
"message":""throwable" : {"}}
"message":" sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target"}}

#### Expected Behavior or What you need to ask
Plugin should be able to provide full certificate chain.
...

#### Using Fluentd and OpenSearch plugin versions

* Bare Metal or within Docker or Kubernetes or others?
deployed in Kubernetes
* Fluentd v1.0 or later
* paste result of ``fluentd --version`` or ``td-agent --version``
```shell
bash-4.4# /usr/sbin/td-agent --version
td-agent 4.4.2 fluentd 1.15.3 (e89092ce1132a933c12bb23fe8c9323c07ca81f5)
```
* OpenSearch plugin version
* paste boot log of fluentd or td-agent
Boot log

[abc@machine ~]$ kubectl logs fluentd-daemonset-8j6nj -n st -c mysidecar
### Thu May 16 07:42:04 UTC 2024
2024-05-15 08:27:38 +0000 [info]: init supervisor logger path=nil rotate_age=nil rotate_size=nil
{"time":"2024-05-15T08:27:38+0000","level":"info","message":"parsing config file is succeeded path=\"/etc/td-agent/td-agent.conf\""}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-amqp' version '0.14.0'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-brevity-control' version '0.1.1'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-calyptia-monitoring' version '0.1.3'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-clog' version '0.1.3'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-cloudwatch-logs' version '0.14.3'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-concat' version '2.5.0'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-cvea-log' version '0.0.3'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-elasticsearch' version '5.2.4'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-flowcounter-simple' version '0.1.0'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-forest' version '0.3.3'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-genhashvalue' version '1.1'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-grafana-loki' version '1.2.20'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-grok-parser' version '2.6.2'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-kafka' version '0.18.1'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-kubernetes_metadata_filter' version '3.2.0'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-metrics-cmetrics' version '0.1.2'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-multi-format-parser' version '1.0.0'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-opensearch' version '1.0.8'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-out-http' version '1.3.4'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-parser-cri' version '0.1.1'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-postgres' version '0.1.0'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-prometheus' version '2.0.300001'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-prometheus_pushgateway' version '0.1.0'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-record-modifier' version '2.1.1'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-remote_syslog' version '1.1.0'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-rewrite-tag-filter' version '2.4.0'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-route' version '1.0.0'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-s3' version '1.7.2'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-sd-dns' version '0.1.0'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-splunk-hec' version '1.3.2'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-systemd' version '1.0.5'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-td' version '1.2.0'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-utmpx' version '0.5.0'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluent-plugin-webhdfs' version '1.5.0'"}
{"time":"2024-05-15T08:27:40+0000","level":"info","message":"gem 'fluentd' version '1.15.3'"}
{"time":"2024-05-15T08:27:44+0000","level":"warn","message":"define to capture fluentd logs in top level is deprecated. Use instead"}
{"time":"2024-05-15T08:27:44+0000","level":"info","message":"using configuration file: \n \n \n format json\n time_format \"%Y-%m-%dT%H:%M:%S%z\"\n \n \n \n @type tail\n path \"/tmp/mainContainerLogs/*.log\"\n pos_file \"/tmp/td-agent.pos\"\n read_from_head true\n tag \"fluentd-main-container-logs\"\n \n @type \"json\"\n time_key \"time\"\n time_format \"%iso8601\"\n keep_time_key true\n unmatched_lines \n time_type string\n \n \n \n @type record_transformer\n enable_ruby true\n renew_record true\n remove_keys $.extension.time,$.extension.message,$.extension.level\n \n log ${ { message: record[\"message\"] } }\n extension ${require 'json';record.merge(JSON.parse(ENV[\"EXTENSION_FIELDS\"]))}\n type log\n level ${record.has_key?(\"level\") ? record[\"level\"]: \"unavailable\" }\n timezone ${ ENV[\"TZ\"] }\n system ${ ENV[\"SYSTEM\"] }\n systemid ${ ENV[\"SYSTEMID\"] }\n host ${ ENV[\"HOSTNAME\"]}.${ ENV[\"NAMESPACE\"] || '' }\n time ${record.has_key?(\"time\") ? record[\"time\"]: time.strftime('%Y-%m-%dT%H:%M:%S%z') }\n \n \n \n @type record_modifier\n enable_ruby true\n remove_keys \"dummy\"\n \n dummy ${require 'json';if record[\"extension\"].empty?; record.delete(\"extension\"); end}\n \n \n \n @type copy\n \n @type \"stdout\"\n \n @type \"json\"\n \n \n \n"}
{"time":"2024-05-15T08:27:44+0000","level":"info","message":"starting fluentd-1.15.3 pid=10 ruby=\"2.7.6\""}
{"time":"2024-05-15T08:27:44+0000","level":"info","message":"spawn command to main: cmdline=[\"/opt/td-agent/bin/ruby\", \"-Eascii-8bit:ascii-8bit\", \"/usr/sbin/td-agent\", \"--under-supervisor\"]"}
2024-05-15 08:27:44 +0000 [info]: init supervisor logger path=nil rotate_age=nil rotate_size=nil
2024-05-15 08:28:09 +0000 [info]: #0 init worker0 logger path=nil rotate_age=nil rotate_size=nil
{"time":"2024-05-15T08:28:09+0000","level":"info","message":"adding filter pattern=\"**\" type=\"record_transformer\""}
{"time":"2024-05-15T08:28:12+0000","level":"info","message":"adding filter pattern=\"**\" type=\"record_modifier\""}
{"time":"2024-05-15T08:28:12+0000","level":"info","message":"adding match pattern=\"**\" type=\"copy\""}
{"time":"2024-05-15T08:28:14+0000","level":"info","message":"adding source type=\"tail\""}
{"time":"2024-05-15T08:28:15+0000","level":"warn","message":"define to capture fluentd logs in top level is deprecated. Use instead","worker_id":0}
{"time":"2024-05-15T08:28:15+0000","level":"warn","message":"parameter 'enable_ruby' in \n @type record_modifier\n enable_ruby true\n remove_keys \"dummy\"\n \n dummy ${require 'json';if record[\"extension\"].empty?; record.delete(\"extension\"); end}\n \n is not used."}
{"time":"2024-05-15T08:28:15+0000","level":"info","message":"starting fluentd worker pid=15 ppid=10 worker=0","worker_id":0}
{"time":"2024-05-15T08:28:15+0000","level":"info","message":"following tail of /tmp/mainContainerLogs/fluentd.log","worker_id":0}
{"time":"2024-05-15T08:28:15+0000","level":"warn","message":"pattern not matched: \"# Logfile created on 2024-05-15 08:27:18 +0000 by logger.rb/v1.4.2\"","worker_id":0}

* paste result of ``fluent-gem list``, ``td-agent-gem list`` or your Gemfile.lock
Installed gems

bash-4.4# /opt/td-agent/bin/fluent-gem list

*** LOCAL GEMS ***

activemodel (7.0.5)
activesupport (7.0.5)
addressable (2.8.1)
aes_key_wrap (1.1.0)
amq-protocol (2.3.2)
async (1.30.3)
async-http (0.59.2)
async-io (1.34.0)
async-pool (0.3.12)
attr_required (1.0.1)
aws-eventstream (1.2.0)
aws-partitions (1.781.0)
aws-sdk-cloudwatchlogs (1.65.0)
aws-sdk-core (3.175.0)
aws-sdk-kms (1.58.0)
aws-sdk-s3 (1.116.0)
aws-sdk-sqs (1.51.1)
aws-sigv4 (1.5.2)
base91 (0.0.1)
benchmark (default: 0.1.0)
bigdecimal (default: 2.0.0)
bindata (2.4.14)
bundler (2.3.18, default: 2.1.4)
bunny (2.22.0)
cgi (default: 0.1.0.1)
cmetrics (0.3.3)
concurrent-ruby (1.1.10)
connection_pool (2.4.1)
console (1.16.2)
cool.io (1.7.1)
csv (default: 3.1.2)
date (default: 3.0.3)
delegate (default: 0.1.0)
did_you_mean (default: 1.4.0)
digest-crc (0.6.4)
digest-murmurhash (1.1.1)
domain_name (0.5.20190701)
elastic-transport (8.1.0)
elasticsearch (8.4.0)
elasticsearch-api (8.4.0)
etc (default: 1.1.0)
excon (0.93.1)
faraday (1.10.2)
faraday-em_http (1.0.0)
faraday-em_synchrony (1.0.0)
faraday-excon (1.1.0)
faraday-httpclient (1.0.1)
faraday-multipart (1.0.4)
faraday-net_http (1.0.1)
faraday-net_http_persistent (1.2.0)
faraday-patron (1.0.0)
faraday-rack (1.0.0)
faraday-retry (1.0.3)
faraday_middleware (1.2.0)
faraday_middleware-aws-sigv4 (0.6.1)
fcntl (default: 1.0.0)
ffi (1.15.5)
ffi-compiler (1.0.1)
fiber-local (1.0.0)
fiddle (default: 1.0.0)
fileutils (1.6.0, default: 1.4.1)
fluent-config-regexp-type (1.0.0)
fluent-diagtool (1.0.1)
fluent-logger (0.9.0)
fluent-plugin-amqp (0.14.0)
fluent-plugin-brevity-control (0.1.1)
fluent-plugin-calyptia-monitoring (0.1.3)
fluent-plugin-clog (0.1.3)
fluent-plugin-cloudwatch-logs (0.14.3)
fluent-plugin-concat (2.5.0)
fluent-plugin-cvea-log (0.0.3)
fluent-plugin-elasticsearch (5.2.4)
fluent-plugin-flowcounter-simple (0.1.0)
fluent-plugin-forest (0.3.3)
fluent-plugin-genhashvalue (1.1)
fluent-plugin-grafana-loki (1.2.20)
fluent-plugin-grok-parser (2.6.2)
fluent-plugin-kafka (0.18.1)
fluent-plugin-kubernetes_metadata_filter (3.2.0)
fluent-plugin-metrics-cmetrics (0.1.2)
fluent-plugin-multi-format-parser (1.0.0)
fluent-plugin-opensearch (1.0.8)
fluent-plugin-out-http (1.3.4)
fluent-plugin-parser-cri (0.1.1)
fluent-plugin-postgres (0.1.0)
fluent-plugin-prometheus (2.0.300001)
fluent-plugin-prometheus_pushgateway (0.1.0)
fluent-plugin-record-modifier (2.1.1)
fluent-plugin-remote_syslog (1.1.0)
fluent-plugin-rewrite-tag-filter (2.4.0)
fluent-plugin-route (1.0.0)
fluent-plugin-s3 (1.7.2)
fluent-plugin-sd-dns (0.1.0)
fluent-plugin-splunk-hec (1.3.2)
fluent-plugin-systemd (1.0.5)
fluent-plugin-td (1.2.0)
fluent-plugin-utmpx (0.5.0)
fluent-plugin-webhdfs (1.5.0)
fluentd (1.15.3)
forwardable (default: 1.3.1)
getoptlong (default: 0.1.0)
hirb (0.7.3)
http (5.1.1)
http-accept (1.7.0)
http-cookie (1.0.5)
http-form_data (2.3.0)
http_parser.rb (0.8.0)
httpclient (2.8.3)
i18n (1.14.1)
io-console (default: 0.5.6)
ipaddr (default: 1.2.2)
irb (default: 1.2.6)
jmespath (1.6.1)
json (2.6.2, default: 2.3.0)
json-jwt (1.15.3)
jsonpath (1.1.3)
kubeclient (4.11.0)
linux-utmpx (0.3.0)
llhttp-ffi (0.4.0)
logger (default: 1.4.2)
lru_redux (1.1.0)
ltsv (0.1.2)
mail (2.8.1)
matrix (default: 0.2.0)
mime-types (3.4.1)
mime-types-data (3.2023.0218.1)
mini_mime (1.1.2)
mini_portile2 (2.8.0)
minitest (5.13.0)
msgpack (1.6.0)
multi_json (1.15.0)
multipart-post (2.2.3)
murmurhash3 (0.1.7)
mutex_m (default: 0.1.0)
net-http-persistent (4.0.2)
net-imap (0.3.6)
net-pop (default: 0.1.0)
net-protocol (0.2.1)
net-smtp (default: 0.1.0)
net-telnet (0.2.0)
netrc (0.11.0)
nio4r (2.5.8)
observer (default: 0.1.0)
oj (3.13.17)
open3 (default: 0.1.0)
openid_connect (1.1.8)
opensearch-api (2.0.2)
opensearch-ruby (2.0.3)
opensearch-transport (2.0.1)
openssl (default: 2.1.3)
ostruct (default: 0.2.0)
parallel (1.22.1)
pg (1.5.3)
power_assert (1.1.7)
prime (default: 0.1.1)
prometheus-client (4.0.000002)
protocol-hpack (1.4.2)
protocol-http (0.23.12)
protocol-http1 (0.14.6)
protocol-http2 (0.14.2)
pstore (default: 0.1.0)
psych (default: 3.1.0)
public_suffix (5.0.0)
racc (default: 1.4.16)
rack (3.0.8)
rack-oauth2 (1.21.3)
rake (13.0.6, 13.0.1)
rbtree (0.4.6)
rdkafka (0.11.1)
rdoc (default: 6.2.1.1)
readline (default: 0.0.2)
readline-ext (default: 0.1.0)
recursive-open-struct (1.1.3)
reline (default: 0.1.5)
remote_syslog_sender (1.2.2)
rest-client (2.1.0)
rexml (default: 3.2.3.1)
rss (default: 0.2.8)
ruby-kafka (1.5.0)
ruby-progressbar (1.11.0)
ruby2_keywords (0.0.5)
rubyzip (1.3.0)
sdbm (default: 1.0.0)
serverengine (2.3.0)
set (1.0.3)
sigdump (0.2.4)
singleton (default: 0.1.0)
sorted_set (1.0.3)
stringio (default: 0.1.0)
strptime (0.2.5)
strscan (default: 1.0.3)
swd (1.3.0)
syslog_protocol (0.9.2)
systemd-journal (1.4.2)
td (0.16.9)
td-client (1.0.8)
td-logger (0.3.28)
test-unit (3.3.4)
timeout (default: 0.1.0)
timers (4.3.5)
tracer (default: 0.1.0)
traces (0.7.0)
tzinfo (2.0.5)
tzinfo-data (1.2022.5)
unf (0.1.4)
unf_ext (0.0.8.2)
uri (default: 0.10.0)
validate_email (0.1.6)
validate_url (1.0.15)
webfinger (2.0.0)
webhdfs (0.10.2)
webrick (1.7.0, default: 1.6.1)
xmlrpc (0.3.0)
yajl-ruby (1.4.3)
yaml (default: 0.1.0)
zip-zip (0.3)
zlib (default: 1.1.0)